conduit system

Abstract

The application discloses a pipeline system, comprising a first pipeline connected with a compressor, the first pipeline comprising a plurality of first straight pipe sections and a plurality of first elbow pipe sections, the plurality of first straight pipe sections and the plurality of first elbow pipe sections being connected alternately to form the first pipeline, wherein the bending angle of the first elbow pipe section is a, a < 90°, and the included angle of the projections of the axes of two adjacent first straight pipe sections on a horizontal plane is b, b ≥ 20°. The application uses small-angle bending to replace the right-angle bend or U-shaped bend of the traditional pipeline structure, disperses the vibration energy, reduces the stress concentration level at the elbow pipe, thereby reducing the risk of pipeline fatigue damage and rupture, and reducing the flow resistance of the refrigerant in the pipeline, improving the flow efficiency of the refrigerant, and the included angle of the projections of the axes of two adjacent first straight pipe sections on a horizontal plane is b, b ≥ 20°, reducing the situation that the fluid is in turbulent flow and vibration interference caused by too small included angle, ensuring the stability of the pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline structure, and particularly relates to a pipeline system. BACKGROUND

[0002] With the rapid development of science and technology and economy, an industrial air conditioning system plays an irreplaceable role in many application scenarios such as electronic product production and manufacturing, data centers, medical facilities, nuclear power plants, and the like. In the operation process of the industrial air conditioning, when a pipeline system fails, serious consequences such as production interruption, equipment overheating damage, data loss, system downtime, and the like may be caused, thereby causing great life and property losses to customers and other personnel.

[0003] In the process of implementing the present application, the inventors have found that at least the following technical problems exist in the prior art:

[0004] The failure of most compressor pipeline systems is due to the fatigue damage caused by the resonance of the pipeline when the compressor is running. When the compressor model is selected, the vibration parameters are also determined. In order to reduce the failure risk of the air conditioning system in the use process, a low-stress pipeline structure design is particularly important. In order to solve the problem of resonance between the fixed-frequency compressor and the pipeline, the inherent frequency of the pipeline is mainly changed by adding a counterweight in the pipeline system, or using a metal hose, or increasing a pipe clamp fixation, so as to avoid resonance. However, when the compressor is a variable-frequency compressor, it is difficult to achieve the method of adjusting the inherent frequency of the pipeline by adding a counterweight to avoid overlapping with the operating frequency of the compressor, because the frequency of the variable-frequency compressor is wide, so it is difficult to avoid the resonance between the variable-frequency compressor in all stages and the pipeline by using a fixed counterweight. With the increasing demand for precise temperature control in many application scenarios, the application of variable-frequency compressors is also more common, which brings new challenges to the pipeline structure design. SUMMARY

[0005] In order to overcome the problems existing in the prior art, the main purpose of the present application is to provide a pipeline system capable of reducing the stress concentration level of the pipeline and thereby reducing the resonance phenomenon.

[0006] In order to achieve the above-mentioned purpose, the following technical solutions are specifically adopted in the present application:

[0007] A pipeline system, comprising:

[0008] A first pipeline connected with a compressor, the first pipeline comprising a plurality of first straight pipe segments and a plurality of first elbow pipe segments, the plurality of first straight pipe segments and the plurality of first elbow pipe segments being connected alternately to form the first pipeline;

[0009] The bending angle of the first elbow pipe section is a, a < 90°, and the included angle of the projections of the axes of two adjacent first straight pipe sections on the horizontal plane is b, b ≥ 20°.

[0010] In some embodiments, the bending angle a of the first elbow pipe section ranges from 30° to 60°.

[0011] In some embodiments, the projection of the axis of the first pipe on the horizontal plane is tangent to the outer wall of the compressor.

[0012] In some embodiments, the compressor is provided with an exhaust port and a return port, the first pipe is connected to the exhaust port, and the pipe system further comprises a second pipe connected to the return port, the second pipe comprising a plurality of second straight pipe sections and a plurality of second elbow pipe sections, the plurality of second straight pipe sections and the plurality of second elbow pipe sections being connected alternately to form the second pipe.

[0013] In some embodiments, the bending angle of the second elbow pipe section is M, M ≤ 90°.

[0014] In some embodiments, the thickness of the pipe wall of the first pipe and the second pipe ranges from 0.75 mm to 1.5 mm.

[0015] In some embodiments, the diameter of the first pipe and the second pipe is D, D ≥ 6 mm, and the bending radius of the first elbow pipe section and the second elbow pipe section is R, R ≥ 1.5D.

[0016] In some embodiments, the first straight pipe section comprises a plurality of straight pipes extending in the vertical direction, and the vertical distance between the axes of two adjacent straight pipes is P, P ≥ 8D.

[0017] In some embodiments, the length of the first straight pipe section between two adjacent first elbow pipe sections is L, L ≥ 1.5D.

[0018] In some embodiments, the pipe system further comprises a pipe clamp, and the pipe clamp is sleeved on the first pipe.

[0019] Compared with the prior art, the pipe system provided by the present application has at least the following beneficial effects:

[0020] The bending angle of the first bend in this application is 'a', where 'a' < 90°. By using a small-angle bending structure to replace the right-angle bend or U-shaped bend of the traditional pipeline structure, vibration energy is dispersed, and the stress concentration level at the bend is reduced, thereby reducing the risk of pipeline fatigue damage and fracture, and extending pipeline life. Furthermore, the use of a small-angle bending structure also reduces the flow resistance of the refrigerant in the pipeline, thereby improving the flow efficiency of the refrigerant, reducing noise, and lowering the difficulty of forming, which in turn reduces the requirements for precision and equipment. In addition, the angle between the projections of the axes of two adjacent first straight pipe sections that are not in the same plane on the horizontal plane is 'b', where 'b' ≥ 20°, in order to reduce the possibility of fluid turbulence, vibration interference, or increased noise caused by excessively small angles in the pipeline, thus ensuring the stability of the pipeline. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the pipeline system provided in an embodiment of this application;

[0022] Figure 2 This is a top view of the piping system provided in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the structure of the first pipeline of the pipeline system provided in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of another embodiment of the piping system provided in this application.

[0025] Figure 5 This is a top view of another embodiment of the piping system provided in this application.

[0026] Figure label:

[0027] 1. First pipeline; 11. First straight pipe section; 110. Straight pipe; 12. First bend in the pipe section;

[0028] 2. Second pipeline; 21. Second straight pipe section; 22. Second bend pipe section;

[0029] 3. Compressor;

[0030] 4. T-joint;

[0031] 5. Compressor feet;

[0032] 6. Pipe clamps. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0034] In the description of the present application, unless explicitly defined and limited, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" means two or more, and the term "multiple" means two or more; the terms "connection", "fixation" and the like should be interpreted broadly, for example, "connection" can be fixed connection, or detachable connection, or integral connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the description of the present application, it should be understood that the "upper", "lower" and other orientation words described in the embodiments of the present application are described with the angle shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when referring to an element connected to another element "on" or "below", it can be directly connected to another element "on" or "below", or indirectly connected to another element "on" or "below" through an intermediate element.

[0036] Because the operating frequency range of the variable frequency compressor is large, in order to solve the resonance phenomenon between the variable frequency compressor and the pipeline, the main means are: optimizing the variable frequency control algorithm, adjusting the compressor frequency by monitoring the pipeline vibration response, shielding the frequency range that causes pipeline resonance in the compressor operating range, but usually only the pipeline stress in the start and stop stage can be effectively reduced, and all resonance frequencies in the compressor operating frequency range cannot be completely avoided; Some designers use parameterized modeling combined with simulation optimization method to design the pipeline structure, but no mature pipeline design scheme is given, when the starting point position or spatial layout of the pipeline at both ends changes, it needs to be recalculated, and there are problems of long calculation period and uncontrollable results.

[0037] Referring to Figures 1-3 As shown in the structure schematic diagram of the pipeline system provided by the embodiments of the present application, Figure 1 As shown in the structure schematic diagram of the pipeline system provided by the embodiments of the present application, Figure 2 As shown in the structure schematic diagram of the pipeline system provided by the embodiments of the present application, Figure 3 The embodiments of the present application provide a pipeline system, which is suitable for equipment with compressor or air vibration, such as air conditioner.

[0038] The pipeline system comprises a first pipeline 1, a second pipeline 2 and a tee pipe 4, and the compressor 3 is provided with an exhaust port and a return port. The first pipeline 1 is connected with the exhaust port. The first pipeline 1 comprises a plurality of first straight pipe sections 11 and a plurality of first elbow pipe sections 12, and the plurality of first straight pipe sections 11 and the plurality of first elbow pipe sections 12 are connected alternately to form the first pipeline 1. One end of the second pipeline 2 is connected with the return port, and the other end of the second pipeline 2 is connected with the tee pipe 4. The second pipeline 2 comprises a plurality of second straight pipe sections 21 and a plurality of second elbow pipe sections 22, and the plurality of second straight pipe sections 21 and the plurality of second elbow pipe sections 22 are connected alternately to form the second pipeline 2. The bending angle of the first elbow pipe section 12 is a, and a < 90°. The bending angle is the included angle between the pipe axis after bending and the pipe axis before bending. The included angle of the axes of the adjacent two first straight pipe sections 11 which are not in the same plane and are projected on the horizontal plane is b, and b ≥ 20°.

[0039] In the embodiment, the pipeline system further comprises a compressor foot pad 5, and the compressor 3 is arranged on the compressor foot pad 5. The compressor foot pad 5 is used for fixing the compressor 3, so as to reduce the movement of the compressor 3 during the driving of the vehicle, ensure the stable operation of the compressor 3, and effectively absorb and disperse the vibration generated during the operation of the compressor 3, so as to protect the vehicle body from damage and ensure the stability of the vehicle during driving.

[0040] In the embodiment, the pipeline system further comprises a pipe clamp 6, and the pipe clamp 6 is sleeved on the first pipeline 1 and is used for fixing and supporting the first pipeline 1, so as to ensure the stability of the pipeline during high-speed operation, reduce the generation of resonance phenomenon, and thus improve the stability of the equipment.

[0041] In the embodiment, the first pipeline 1 is arranged around the circumferential side of the compressor 3, and the axis of the first pipeline 1 is tangent to the outer wall surface of the compressor 3, so that the structure of the equipment is compact, the occupied space of the pipeline system is reduced, and the installation of other components is facilitated.

[0042] In the embodiment, the bending angle a of the first elbow pipe section 12 ranges from 30° to 60°, so as to reduce the cases that the bending angle of the pipeline is too large, the flow of fluid in the pipeline is subjected to greater resistance, and thus the flow rate is reduced, and the cases that the bending angle of the pipeline is too small, the pipeline is subjected to too large stress during bending, and thus cracks occur, and thus the normal operation of the pipeline is ensured.

[0043] In the embodiment, the included angle b of the axes of the adjacent two first straight pipe sections 11 which are not in the same plane and are projected on the horizontal plane is ≥ 45°, so that when the pipeline layout is arranged to be tangent to the outer wall surface of the compressor as much as possible, the number of pipeline sections and the length of the pipeline do not need to be increased additionally, and thus the compact structure of the pipeline system is ensured.

[0044] The bending angle of the first elbow pipe segment 12 in the embodiment is a, a < 90°. By using a small-angle bending structure to replace the right-angle bend or U-shaped bend of the traditional pipe structure, the vibration energy is dispersed, the stress concentration level at the elbow pipe is reduced, the risk of pipe fatigue damage and rupture is reduced, the service life of the pipe is prolonged, the flow resistance of the refrigerant in the pipe is reduced by using the small-angle bending structure, the flow efficiency of the refrigerant is improved, the noise is reduced, the difficulty of forming is reduced, and the requirements for precision and equipment are reduced. In addition, the projection of the axes of the two adjacent first straight pipe segments 11 on the horizontal plane in the same plane has an included angle b, b ≥ 20°, so as to reduce the case that the fluid in the pipe is turbulent, vibrates, interferes or increases noise due to too small included angle, and ensure the stability of the pipe.

[0045] Referring to Figure 1 As shown in the figure, the bending angle of the second elbow pipe segment 22 is M, M ≥ 90°, so as to reduce the case that the oil cannot effectively return to the compressor 3, thereby ensuring the normal operation of the compressor 3.

[0046] In the embodiment, the first pipe 1 is an exhaust pipe, the second pipe 2 is a return pipe, the bending angle a of the first elbow pipe segment 12 is less than 90°, and the bending angle M of the second elbow pipe segment 22 is 90°, that is, the exhaust pipe adopts a small-angle bending structure, and the return pipe adopts a large-angle bending structure. It can be understood that in other embodiments, the first pipe 1 can also be a return pipe, and the second pipe 2 can also be an exhaust pipe.

[0047] Referring to Figures 4-5 As shown in the figure, Figure 4 is a structural schematic view of another embodiment of the pipe system provided by the embodiment of the application, Figure 5 is a structural schematic view of another embodiment of the pipe system provided by the embodiment of the application from the top. In an embodiment, the bending angle M of the second elbow pipe segment 22 is less than 90°. By using a small-angle bending structure for both the first pipe 1 and the second pipe 2, the stress concentration level at the elbow pipe is further reduced, thereby further reducing the case of resonance, improving the stability and reliability of the pipe system structure.

[0048] In the embodiment, the bending angle M of the second elbow pipe segment 22 ranges from 30° to 60°, so as to reduce the case that the flow of the fluid in the pipe is subjected to greater resistance due to too large bending angle of the pipe, thereby reducing the case that cracks occur in the pipe due to too small bending angle of the pipe, and ensuring the normal operation of the pipe.

[0049] Referring to Figure 3As shown, the thickness of the pipe wall of the first pipe 1 and the second pipe 2 is 0.75mm-1.5mm, preferably, the thickness of the pipe wall of the first pipe 1 and the second pipe 2 is 0.75mm, so as to reduce the case that the thickness of the pipe wall is too small to cause insufficient strength and the first pipe 1 and the second pipe 2 are easily broken, and reduce the case that the thickness of the pipe wall is too large to cause increased cost and affect the flow of the fluid in the pipe, so as to ensure the normal working of the pipe system, specifically, the thickness of the pipe wall of the first pipe 1 and the second pipe 2 can be 0.85mm, 1mm, 1.12mm, 1.31mm, 1.44mm, etc.

[0050] Referring to Figure 3 As shown, the diameter of the first pipe 1 and the second pipe 2 is D, D≥6mm. The bending radius of the first elbow pipe section 12 and the second elbow pipe section 22 is R, R≥1.5D, preferably, R can be 25mm or 40mm, so as to reduce the case that the bending radius is too small or too large to cause deformation inside the first pipe 1 and the second pipe 2, damage the pipe, destroy the sealing performance, and cause fluid leakage, ensure the stability of the pipe, and thus ensure the refrigeration effect of the system and the service life of the pipe.

[0051] The embodiment is helpful to reduce the thinning rate and flattening rate of the wall thickness of the first elbow pipe section 12 and the second elbow pipe section 22, and also reduce the stress concentration in the bending forming process of the first elbow pipe section 12 and the second elbow pipe section 22, reduce the case of cracks, wrinkles, and cracks, etc., so as to improve the overall strength and pressure-bearing capacity of the first pipe 1 and the second pipe 2.

[0052] Referring to Figure 3 As shown, the first straight pipe section 11 includes a plurality of straight pipes 110 extending in the vertical direction, and the vertical distance between the axes of two adjacent straight pipes 110 is P, P≥8D, which reduces the case that the distance between the straight pipes 110 is too small to cause the cooling airflow to be limited and thus cause the compressor 3 to overheat, and also reduces the case that the close arrangement of the pipes causes inconvenience in maintenance and is prone to resonance, improves the service life of the equipment, and ensures the normal working of the air conditioning system, specifically, the vertical distance P between the axes of two adjacent straight pipes 110 can be 49mm, 51mm, 55mm, etc.

[0053] Referring to Figure 3 As shown, the length of the first straight pipe section 11 between two adjacent first elbow pipe sections 12 is L, L≥1.5D, and when the pipe is processed, the pipe clamped by the clamp and the elbow pipe section pipe to be deformed cannot interfere with each other, so the minimum size of L needs to be limited to reduce the difficulty in processing the pipe and reduce the requirements on the processing equipment, facilitating processing.

[0054] In a specific application scenario, when designing the air conditioner pipeline structure, based on the principle that the projection of the pipeline axis on the horizontal plane is as close to tangent to the compressor 3 profile as possible, according to the spatial position of the compressor 3 return air port, exhaust port and three-way pipe 4 or expansion valve, the general trend of the pipeline is preliminarily determined, then the straight pipe section connected with the compressor 3 return air port and exhaust port is extended upward along the vertical direction, then the bending angle a of the pipeline is less than 90°, and then a plurality of small-angle bends are used to replace the traditional right-angle bend or U-shaped bend pipe, and finally a pipeline structure with low stress during the operation of the compressor 3 is designed.

[0055] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A piping system, characterized by, The pipeline system comprises: a first pipeline connected with a compressor, the first pipeline comprising a plurality of first straight pipe sections and a plurality of first elbow pipe sections, the plurality of first straight pipe sections and the plurality of first elbow pipe sections being connected alternately to form the first pipeline; a second pipeline comprising a plurality of second elbow pipe sections, the first elbow pipe sections and the second elbow pipe sections having a bending radius R, R≥1.5D; wherein a bending angle of the first elbow pipe section is a, a<90°, and an included angle between projections of axes of two adjacent first straight pipe sections on a horizontal plane is b, b≥20°; the first straight pipe section comprises a plurality of straight pipes extending in a vertical direction, a vertical distance between axes of two adjacent straight pipes is P, P≥8D; and a length of the first straight pipe section between two adjacent first elbow pipe sections is L, L≥1.5D.

2. The plumbing system of claim 1, wherein, The bending angle a of the first elbow pipe section ranges from 30° to 60°.

3. The plumbing system of claim 1, wherein, A projection of an axis of the first pipeline on a horizontal plane is tangent to an outer wall surface of the compressor.

4. The plumbing system of claim 1, wherein, The compressor is provided with an exhaust port and a return port, the first pipeline is connected with the exhaust port, the second pipeline is connected with the return port, and the second pipeline further comprises a plurality of second straight pipe sections, the plurality of second straight pipe sections and the plurality of second elbow pipe sections being connected alternately to form the second pipeline.

5. The plumbing system of claim 4, wherein, A bending angle of the second elbow pipe section is M, M≤90°.

6. The plumbing system of claim 4, wherein, A thickness of a pipe wall of the first pipeline and the second pipeline ranges from 0.75 mm to 1.5 mm.

7. The plumbing system of claim 4, wherein, A diameter of the first pipeline and the second pipeline is D, D≥6 mm.

8. The pipe system according to any one of claims 1 to 7, characterized in that The pipeline system further comprises a pipe clamp sleeved on the first pipeline.

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