CN113865687A - Pipeline vibration testing device - Google Patents
Pipeline vibration testing device Download PDFInfo
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- CN113865687A CN113865687A CN202111015112.0A CN202111015112A CN113865687A CN 113865687 A CN113865687 A CN 113865687A CN 202111015112 A CN202111015112 A CN 202111015112A CN 113865687 A CN113865687 A CN 113865687A
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- 238000001514 detection method Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 5
- 238000004904 shortening Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 51
- 210000000078 claw Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
Abstract
The application belongs to the technical field of household appliances, and particularly relates to a pipeline vibration testing device which comprises a flash frequency velocimeter, a connecting piece and a measuring device, wherein the flash frequency velocimeter is provided with a light outlet arranged along a first direction; along a first direction, a first end of the connecting piece is fixedly connected with the flash frequency velocimeter, the first end of the connecting piece surrounds the outer side of the light outlet, a cavity is formed inside the connecting piece, and the connecting piece is also provided with an opening which is opposite to the light outlet; the measuring device is fixedly arranged at the second end of the connecting piece and is provided with scale marks. The method and the device are beneficial to shortening the detection time and reducing the detection cost.
Description
Technical Field
The application belongs to the technical field of household appliances, and particularly relates to a pipeline vibration testing device.
Background
The air conditioner generally comprises an air conditioner external unit and an air conditioner internal unit, wherein a refrigeration pipeline is connected between the air conditioner external unit and the air conditioner internal unit, a refrigerant circularly flows in the refrigeration pipeline, and heat exchange is realized in the air conditioner external unit and the air conditioner internal unit, so that the air conditioner realizes the refrigeration or heating function. Since the compressor continuously compresses the refrigerant, the refrigerant in the refrigeration circuit generally has a high working pressure, which causes the refrigeration circuit to vibrate. However, vibration of the refrigeration circuit easily causes the refrigeration circuit to be broken or the welding point to be unreliable, thereby causing leakage of refrigerant, and serious and even possible danger of fire or explosion. Therefore, the air conditioner needs to detect the vibration amplitude of the refrigeration pipeline before leaving the factory so as to ensure the subsequent use safety.
In the related technical scheme, the detection of the vibration amplitude of the refrigeration pipeline generally needs to be carried out by entrusting a special detection mechanism, and an air conditioner manufacturer needs to adjust the refrigeration pipeline according to a detection result until the vibration amplitude of the refrigeration pipeline is combined with the related requirements.
However, by adopting the scheme of the related technology, the whole detection process is complex and consumes long time; and the detection cost is higher, and the production cost is increased.
Disclosure of Invention
In order to solve the above problems in the related art, that is, to solve the problems of long vibration amplitude detection time and high cost of the refrigeration pipeline in the related art, the present application provides a pipeline vibration testing apparatus.
An embodiment of the present application provides a pipeline vibration testing arrangement, includes:
a flash velocimeter having a light outlet arranged in a first direction;
the first end of the connecting piece is fixedly connected with the flash frequency velocimeter along the first direction, the first end of the connecting piece surrounds the outer side of the light outlet, a cavity is formed inside the connecting piece, the connecting piece is further provided with an opening, and the opening is opposite to the light outlet;
and the measuring device is fixedly arranged at the second end of the connecting piece, and the measuring device is provided with scale marks.
Optionally, the connecting piece includes a body, a first connecting portion and a second connecting portion, two ends of the body are respectively connected to the first connecting portion and the second connecting portion, the first connecting portion is disposed at a first end of the connecting piece, and the second connecting portion is disposed at a second end of the connecting piece;
the first connecting portion sleeve is established the outside of stroboscopic tachymeter, the second connecting portion butt measuring device.
The pipeline vibration testing device optionally comprises a top wall, a bottom wall, and a first side wall and a second side wall connecting the top wall and the bottom wall, wherein the length of the first side wall is equal to that of the second side wall along the first direction, the length of the top wall is smaller than that of the first side wall, and the length of the bottom wall is greater than that of the first side wall; the top wall, the bottom wall, the first side wall and the second side wall jointly enclose the cavity, and the opening is formed at one end of the cavity, which is far away from the flash frequency velocimeter;
the first connecting part is a prismatic table connecting the top wall, the bottom wall, the first side wall and the second side wall;
the second connecting part comprises a supporting plate and a limiting groove, the supporting plate is arranged on one side, away from the second side wall, of the first side wall, the supporting plate is fixed on the bottom wall through a connecting plate, and the supporting plate extends along a second direction; the limiting groove is arranged on one side of the second side wall, the limiting groove is fixedly connected to the bottom wall, and a notch of the limiting groove faces the first side wall;
wherein the first direction is perpendicular to the second direction.
Optionally, in a cross section perpendicular to the first direction, the projection of the flash rate meter is square, the projection of the first connection portion is also square, and the projection of the first connection portion covers the projection of the flash rate meter.
According to the pipeline vibration testing device, optionally, the first connecting portion is clamped or bonded with the flash frequency velocimeter.
Optionally, the measuring device extends along the second direction, a part of the measuring device is overlapped on the supporting plate, and a first end of the measuring device is clamped in the limiting groove.
Optionally, one end of the supporting plate, which is away from the first side wall, is further provided with two limiting protrusions, the two limiting protrusions are oppositely arranged along the first direction, and the second end of the measuring device is located between the two limiting protrusions.
Optionally, the measuring device is a vernier caliper, and an outer measuring claw of the vernier caliper is disposed on a side away from the flash velocimeter.
As above pipeline vibration testing arrangement, optionally, measuring device is the scale, the scale mark setting of scale is in the one side that deviates from the flash rate tachymeter.
Optionally, a first guide surface is arranged on one side of the first side wall, which is away from the bottom wall, and a second guide surface is arranged on one side of the second side wall, which is away from the bottom wall; along deviating from the direction of stroboscopic tachymeter, first spigot surface and second spigot surface all face the diapire slope.
As can be appreciated by those skilled in the art, embodiments of the present application provide a pipeline vibration testing apparatus, including a flash velocimeter, a connecting piece, and a measuring device, where the flash velocimeter has a light outlet arranged along a first direction; along a first direction, a first end of the connecting piece is fixedly connected with the flash frequency velocimeter, the first end of the connecting piece surrounds the outer side of the light outlet, a cavity is formed inside the connecting piece, and the connecting piece is also provided with an opening which is opposite to the light outlet; the measuring device is fixedly arranged at the second end of the connecting piece and is provided with scale marks. Through the setting, this application can utilize the vibration direction of stroboscopic tachymeter observation refrigeration pipeline, then measure the vibration range of refrigeration pipeline through measuring device. Usable this application's pipeline vibration testing arrangement detects in advance refrigeration pipeline's vibration amplitude before dispatching from the factory, if the vibration amplitude of discovery refrigeration pipeline is not conform to the requirement and can in time adjust refrigeration pipeline, then sends the refrigeration pipeline of compound requirement after the adjustment to special detection mechanism and carries out the detection of vibration amplitude to can improve the success rate that detects, reduce the rate of reinspecting, be favorable to shortening check-out time, reduce and detect the cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a pipeline vibration testing apparatus provided in an embodiment of the present application in a first state;
FIG. 2 is a schematic diagram of a pipeline vibration testing apparatus provided in an embodiment of the present application in a second state;
fig. 3 is an exploded view of a pipeline vibration testing apparatus according to an embodiment of the present application.
Reference numerals:
10-flash velocimeter; 11-a knob; 12-a power interface;
20-a connector;
21-body; 211-top wall; 212-bottom wall; 213-a first side wall; 2131-a first guide surface; 214-a second sidewall; 2141-a second guide surface;
22-a first connection;
23-a second connection; 231-a support plate; 232-a limit groove; 233-limit projection;
30-a measuring device; 31-outer measuring jaw;
x-a first direction; y-second direction.
Detailed Description
In the related technical scheme, the vibration amplitude of a refrigeration pipeline needs to be detected before the air conditioner leaves a factory, so that the subsequent use safety is ensured. The detection of the vibration amplitude of the refrigeration pipeline generally needs to be carried out by entrusting a special detection mechanism, and an air conditioner manufacturer needs to adjust the refrigeration pipeline according to a detection result until the vibration amplitude of the refrigeration pipeline is combined with related requirements. However, the product to be detected needs to be transported to the detection mechanism, and the product needs to be transported back after detection is completed, so that the whole detection process is complex and consumes long time; and the manpower and material resources consumed in the detection process are more, the cost is higher, and the production cost is increased.
In view of this, this application aims at providing a pipeline vibration testing arrangement, observes the vibration direction of refrigeration pipeline through the stroboscopic tachymeter, then measures the vibration range of refrigeration pipeline through measuring device. Utilize the pipeline vibration testing arrangement of this application to carry out the preliminary detection to the vibration range of refrigeration pipeline, if the vibration range of discovery refrigeration pipeline is not conform to the requirement can in time adjust refrigeration pipeline, then send the refrigeration pipeline after the adjustment to special detection mechanism and carry out the detection of vibration range to can improve the success rate that detects, reduce the rate of reinspecting, be favorable to shortening check-out time, reduce and detect the cost.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
FIG. 1 is a schematic diagram of a pipeline vibration testing apparatus provided in an embodiment of the present application in a first state; FIG. 2 is a schematic diagram of a pipeline vibration testing apparatus provided in an embodiment of the present application in a second state; fig. 3 is an exploded view of a pipeline vibration testing apparatus according to an embodiment of the present application.
Referring to fig. 1 to fig. 3, the present embodiment provides a pipeline vibration testing apparatus, including: the flash rate velocimeter 10, the flash rate velocimeter 10 has the light outlet that sets up along first direction X. The stroboscopic velocimeter 10 is a measurement instrument made using the phenomenon of persistence of vision (which occurs when a light source that flashes at a set frequency is synchronized with the vibration amplitude of an object, a relatively static phenomenon of persistence of vision). When the device is used for observing an object moving at a high speed, the device is close to and synchronous with the moving speed of the object to be measured by adjusting the flickering frequency of the device, and the object to be measured moves at the high speed but seems to move slowly or be static, so that the moving condition of the object moving at the high speed can be easily observed by naked eyes. Be equipped with knob 11 and power source 12 on the flash velocimeter 10 of this embodiment, switch on power source 12 and power during the use, adjust the frequency of the light that the light outlet jetted out through adjust knob 11 for light frequency is close the vibration frequency of refrigeration pipeline, thereby can observe the vibration direction of refrigeration pipeline through flash velocimeter 10.
The connecting piece 20, along first direction X, the first end and the stroboscopic tachymeter 10 fixed connection of connecting piece 20, and the first end of connecting piece 20 is around the outside at the light exit, and the inside of connecting piece 20 is formed with the cavity, and connecting piece 20 still is equipped with the opening, and the opening sets up with the light exit relatively. The connector 20 of the present embodiment mainly serves to connect the flash velocimeter 10 and the measuring device 30 and provides a passage for light to pass through for the flash velocimeter 10.
And the measuring device 30 is fixedly arranged at the second end of the connecting piece 20, and the measuring device 30 is provided with scale marks.
This embodiment is when using, and the light that the flash rate tachymeter 10 jetted out can reach the refrigeration pipeline behind the cavity in the connecting piece 20, and the staff can observe the vibration direction of refrigeration pipeline through flash rate tachymeter 10, then utilizes measuring device 30 to measure the vibration range of refrigeration pipeline to obtain the specific vibration range of refrigeration pipeline according to the vibration range, then compare with standard vibration range, thereby judge whether the vibration range of refrigeration pipeline meets the requirements.
Utilize the pipeline vibration testing arrangement of this embodiment, can predetect refrigeration pipeline's vibration amplitude before dispatching from the factory, if the vibration amplitude of discovery refrigeration pipeline is not conform to the requirement and can in time adjust refrigeration pipeline, then send the refrigeration pipeline of compound requirement after the adjustment to special detection mechanism and carry out the detection of vibration amplitude to can improve the success rate that detects, reduce the rate of reinspection, be favorable to shortening check-out time, reduce and detect the cost.
Alternatively, as shown in fig. 1 and 2, the connecting member 20 of the present embodiment includes a body 21, a first connecting portion 22 and a second connecting portion 23, the two ends of the body 21 are respectively connected to the first connecting portion 22 and the second connecting portion 23, the first connecting portion 22 is disposed at a first end of the connecting member 20, and the second connecting portion 23 is disposed at a second end of the connecting member 20. The first connecting portion 22 is sleeved on the outer side of the flash velocimeter 10, and the second connecting portion 23 is abutted against the measuring device 30.
Further, as shown in fig. 3, the body 21 includes a top wall 211, a bottom wall 212, and a first side wall 213 and a second side wall 214 connecting the top wall 211 and the bottom wall 212, and the top wall 211, the bottom wall 212, the first side wall 213, and the second side wall 214 may be connected in sequence and fixed by welding. Along the first direction X, the length of the first side wall 213 is equal to the length of the second side wall 214, the length of the top wall 211 is smaller than the length of the first side wall 213, and the length of the bottom wall 212 is greater than the length of the first side wall 213; the top wall 211, the bottom wall 212, the first side wall 213 and the second side wall 214 together enclose a cavity, and an opening is formed at an end of the cavity facing away from the flash velocimeter 10.
The first connecting portion 22 is a truncated pyramid connecting the top wall 211, the bottom wall 212, the first side wall 213 and the second side wall 214, and in this embodiment, the first connecting portion is in a truncated pyramid shape, and the first connecting portion 22 can be welded and fixed on the body 21.
The second connecting portion 23 includes a supporting plate 231 and a limiting groove 232, the supporting plate 231 is disposed on a side of the first side wall 213 facing away from the second side wall 214, the supporting plate 231 is fixed on the bottom wall 212 through a connecting plate, and the supporting plate 231 extends along the second direction Y; the support plate 231 may be welded to a connecting plate, and the connecting plate may be welded to the bottom wall 212. The limiting groove 232 is disposed on one side of the second sidewall 214, and the limiting groove 232 is fixedly connected to the bottom wall 212, for example, may be fixed to the bottom wall 212 by welding, and the notch of the limiting groove 232 faces the first sidewall 213.
In the present embodiment, the first direction X is perpendicular to the second direction Y.
In the cross section perpendicular to the first direction X, the projection of the flash rate sensor 10 of this embodiment is square, the projection of the first connecting portion 22 is also square, and the projection of the first connecting portion 22 covers the projection of the flash rate sensor 10, so that the first connecting portion 22 can be sleeved on the outer side of the flash rate sensor 10.
Preferably, in this embodiment, the first connecting portion 22 and the flash frequency velocimeter 10 may be connected and fixed by a connection manner such as clamping or bonding.
Optionally, the measuring device 30 of the present embodiment extends along the second direction Y, and the scale marks on the measuring device 30 are also arranged along the second direction Y, so as to facilitate measurement of the refrigeration pipeline. Part of the measuring device 30 is overlapped on the supporting plate 231, the first end of the measuring device 30 is clamped in the limiting groove 232, and the measuring device 30 is supported and fixed through the above mode.
Further, one end of the supporting plate 231 facing away from the first side wall 213 of the embodiment is further provided with two limiting protrusions 233, the two limiting protrusions 233 are oppositely arranged along the first direction X, and the second end of the measuring device 30 is located between the two limiting protrusions 233, so that the second end of the measuring device 30 can be limited by the two limiting protrusions 233, and the measuring device 30 is further prevented from moving in the measuring process.
In a possible implementation manner, the measuring device 30 of this embodiment is a vernier caliper, the outer measuring claw 31 of the vernier caliper is disposed on one side away from the flash velocimeter 10, during measurement, the refrigeration pipeline is placed between the two outer measuring claws 31, and the opening range of the two outer measuring claws 31 is the same as the vibration range of the refrigeration pipeline, so that the vibration range of the refrigeration pipeline can be read, and the vibration range of the refrigeration pipeline is obtained.
In another possible embodiment, the measuring device 30 may also be a scale, and the scale line of the scale is disposed on one side away from the flash velocimeter 10, so that the flash velocimeter 10 can be observed to read the corresponding scale of the vibration range of the refrigeration pipeline on the scale, thereby obtaining the vibration amplitude of the cold pipeline.
Optionally, in this embodiment, a first guide surface 2131 is disposed on a side of the first side wall 213 away from the bottom wall 212, and a second guide surface 2141 is disposed on a side of the second side wall 214 away from the bottom wall 212; in a direction away from the flash velocimeter 10, both the first guide surface 2131 and the second guide surface 2141 are inclined towards the bottom wall 212.
As can be seen from the above description, the present application can observe the vibration direction of the refrigeration pipeline through the flash velocimeter 10, and then measure the vibration amplitude of the refrigeration pipeline through the measuring device 30. Usable this application's pipeline vibration testing arrangement detects in advance refrigeration pipeline's vibration amplitude before dispatching from the factory, if the vibration amplitude of discovery refrigeration pipeline is not conform to the requirement and can in time adjust refrigeration pipeline, then sends the refrigeration pipeline of compound requirement after the adjustment to special detection mechanism and carries out the detection of vibration amplitude to can improve the success rate that detects, reduce the rate of reinspecting, be favorable to shortening check-out time, reduce and detect the cost.
In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the embodiments of the present application, it should be understood that the terms "inner", "outer", "upper", "bottom", "front", "back", and the like, when used in conjunction with the orientation or positional relationship shown in the drawings, are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present application.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A pipe vibration testing apparatus, comprising:
a flash velocimeter having a light outlet arranged in a first direction;
the first end of the connecting piece is fixedly connected with the flash frequency velocimeter along the first direction, the first end of the connecting piece surrounds the outer side of the light outlet, a cavity is formed inside the connecting piece, the connecting piece is further provided with an opening, and the opening is opposite to the light outlet;
and the measuring device is fixedly arranged at the second end of the connecting piece, and the measuring device is provided with scale marks.
2. The pipeline vibration testing device according to claim 1, wherein the connecting member comprises a body, a first connecting portion and a second connecting portion, two ends of the body are respectively connected with the first connecting portion and the second connecting portion, the first connecting portion is arranged at a first end of the connecting member, and the second connecting portion is arranged at a second end of the connecting member;
the first connecting portion sleeve is established the outside of stroboscopic tachymeter, the second connecting portion butt measuring device.
3. The pipe vibration testing apparatus of claim 2, wherein the body includes a top wall, a bottom wall, and first and second side walls connecting the top and bottom walls, the first side wall having a length equal to a length of the second side wall in the first direction, the top wall having a length less than the first side wall, the bottom wall having a length greater than the first side wall; the top wall, the bottom wall, the first side wall and the second side wall jointly enclose the cavity, and the opening is formed at one end of the cavity, which is far away from the flash frequency velocimeter;
the first connecting part is a prismatic table connecting the top wall, the bottom wall, the first side wall and the second side wall;
the second connecting part comprises a supporting plate and a limiting groove, the supporting plate is arranged on one side, away from the second side wall, of the first side wall, the supporting plate is fixed on the bottom wall through a connecting plate, and the supporting plate extends along a second direction; the limiting groove is arranged on one side of the second side wall, the limiting groove is fixedly connected to the bottom wall, and a notch of the limiting groove faces the first side wall;
wherein the first direction is perpendicular to the second direction.
4. The pipeline vibration testing device of claim 3, wherein in a cross section perpendicular to the first direction, the projection of the flash rate velocimeter is square, the projection of the first connection portion is also square, and the projection of the first connection portion covers the projection of the flash rate velocimeter.
5. The pipeline vibration testing device of claim 4, wherein the first connecting portion is clamped or bonded to the flash velocimeter.
6. The pipeline vibration testing device of claim 3, wherein the measuring device extends in the second direction, a portion of the measuring device overlaps the support plate, and a first end of the measuring device is engaged in the retaining groove.
7. The pipeline vibration testing device of claim 6, wherein the end of the supporting plate facing away from the first side wall is further provided with two limiting protrusions, the two limiting protrusions are oppositely arranged along the first direction, and the second end of the measuring device is located between the two limiting protrusions.
8. The pipeline vibration testing device of claim 7, wherein the measuring device is a vernier caliper, and an outer measuring jaw of the vernier caliper is arranged on a side away from the flash velocimeter.
9. The pipeline vibration testing device of claim 7, wherein the measuring device is a graduated scale, and the graduation lines of the graduated scale are arranged on the side away from the flash velocimeter.
10. The pipeline vibration testing device of claim 3, wherein a side of the first side wall facing away from the bottom wall is provided with a first guide surface, and a side of the second side wall facing away from the bottom wall is provided with a second guide surface; along deviating from the direction of stroboscopic tachymeter, first spigot surface and second spigot surface all face the diapire slope.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111015112.0A CN113865687B (en) | 2021-08-31 | 2021-08-31 | Pipeline vibration testing device |
| PCT/CN2022/080686 WO2023029433A1 (en) | 2021-08-31 | 2022-03-14 | Pipeline vibration testing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111015112.0A CN113865687B (en) | 2021-08-31 | 2021-08-31 | Pipeline vibration testing device |
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| CN113865687B CN113865687B (en) | 2024-02-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029433A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调器有限总公司 | Pipeline vibration testing apparatus |
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| WO2023029433A1 (en) | 2023-03-09 |
| CN113865687B (en) | 2024-02-20 |
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