Pipeline system

Abstract

The invention discloses a pipeline system which comprises a first pipeline, the first pipeline is connected with a compressor, the first pipeline comprises a plurality of first straight pipe sections and a plurality of first bent pipe sections, the first straight pipe sections and the first bent pipe sections are connected in a staggered mode to form the first pipeline, the bending angle of each first bent pipe section is a, a is smaller than 90 degrees, and a is smaller than 90 degrees. The included angle of the projections of the axes of the two adjacent first straight pipe sections which are not in the same plane on the horizontal plane is b, and b is larger than or equal to 20 degrees. Small-angle bending is adopted to replace a right-angle bending or a U-shaped bending of a traditional pipeline structure, vibration energy is dispersed, the stress concentration level of the bent pipe is reduced, accordingly, the risk of fatigue damage and breakage of the pipeline is reduced, the flowing resistance of refrigerants in the pipeline is reduced, the flowing efficiency of the refrigerants is improved, and the service life of the pipeline is prolonged. And the included angle of the projections of the axes of the two adjacent first straight pipe sections which are not in the same plane on the horizontal plane is b, b is larger than or equal to 20 degrees, the situations of fluid turbulence and vibration interference caused by the too small included angle are reduced, and the stability of the pipeline is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline structures, and in particular to a pipeline system. Background Art

[0002] With the rapid development of science and technology and economy, industrial air conditioning systems play an irreplaceable role in many application scenarios such as electronic product manufacturing, data centers, medical facilities, nuclear power plants, etc. During the operation of industrial air conditioning, when the pipeline system fails, it may cause serious consequences such as production interruption, equipment overheating and damage, data loss, system downtime, etc., resulting in significant loss of life and property to customers and other personnel.

[0003] In the process of implementing this application, the inventors found that there are at least the following technical problems in the prior art:

[0004] The failure of most compressor pipeline systems is due to fatigue damage caused by pipeline resonance caused by compressor operation. When the compressor model is selected, its vibration and other parameters are also determined. In order to reduce the risk of failure of the air-conditioning system during use, low-stress pipeline structure design is particularly important. In order to solve the problem of resonance between fixed-frequency compressors and pipelines, resonance is mainly avoided by adding counterweights to the pipeline system, or using metal hoses, or adding pipe clamps to change the natural frequency of the pipeline. However, when the compressor is a variable-frequency compressor, it is difficult to adjust the natural frequency of the pipeline by adding pipeline counterweights to avoid overlapping with the compressor operating frequency. Because the frequency of the variable-frequency compressor is relatively wide, it is difficult to avoid the resonance of the variable-frequency compressor and the pipeline at all stages through fixed counterweights. With the increasing demand for precision temperature control in many application scenarios, the application of variable-frequency compressors has become more common, bringing new challenges to pipeline structure design. Summary of the invention

[0005] In order to overcome the problems existing in the above-mentioned prior art, the main purpose of the present application is to provide a pipeline system that can reduce the level of pipeline stress concentration and thus reduce the occurrence of resonance phenomenon.

[0006] In order to achieve the above objectives, this application specifically adopts the following technical solutions:

[0007] A piping system, comprising:

[0008] A first pipeline, the first pipeline is connected to the compressor, the first pipeline comprises a plurality of first straight pipe sections and a plurality of first curved pipe sections, the plurality of first straight pipe sections and the plurality of first curved pipe sections are staggeredly connected to form the first pipeline;

[0009] The bending angle of the first curved pipe section is a, a<90°, and the included angle between the projections of the axes of two adjacent first straight pipe sections not in the same plane on the horizontal plane is b, b≥20°.

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

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

[0012] In some embodiments, the compressor is provided with an exhaust port and an air return port, the first pipeline is connected to the exhaust port, the pipeline system also includes a second pipeline, the second pipeline is connected to the air return port, the second pipeline includes a plurality of second straight pipe sections and a plurality of second curved pipe sections, the plurality of second straight pipe sections and the plurality of second curved pipe sections are staggeredly connected to form the second pipeline.

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

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

[0015] In some embodiments, the diameters of the first pipeline and the second pipeline are D, D≥6 mm, and the bending radii of the first curved pipe section and the second curved pipe section are R, R≥1.5D.

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

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

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

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

[0020] The bending angle of the first bent pipe section of the present application is a, a<90°. By adopting a small-angle bending structure to replace the right-angle bend or U-shaped bend of the traditional pipeline structure, the 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 the life of the pipeline. By adopting a small-angle bending structure, the flow resistance of the refrigerant in the pipeline is also reduced, thereby improving the flow efficiency of the refrigerant, reducing noise, reducing the difficulty of forming, and further reducing the requirements for precision and equipment. In the present application, the angle between the projections of the axes of the two adjacent first straight pipe sections that are not in the same plane on the horizontal plane is b, b≥20°, so as to reduce the situation where the angle is too small to cause fluid turbulence, vibration interference or increased noise in the pipeline, thereby ensuring the stability of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the pipeline system provided in the embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a pipeline system provided in an embodiment of the present application from a top view;

[0023] Figure 3 A schematic diagram of the structure of a first pipeline of a pipeline system provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of another embodiment of the pipeline system provided in the embodiment of the present application;

[0025] Figure 5 A schematic diagram of the structure of another embodiment of the pipeline system provided in an embodiment of the present application from a top view.

[0026] Reference numerals:

[0027] 1. First pipeline; 11. First straight pipe section; 110. Straight pipe; 12. First curved pipe section;

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

[0029] 3. Compressor;

[0030] 4. Tee pipe;

[0031] 5. Compressor foot glue;

[0032] 6. Pipe clamp. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more, and the term "multiple" refers to two or more; the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described at the angles shown in the accompanying 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 it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0036] Since 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, and shielding the frequency segment that causes pipeline resonance within the compressor operating range. However, it can usually only effectively reduce the pipeline stress during the start and stop stages, and cannot completely avoid all the resonance frequencies within the compressor operating frequency range; some designers use parametric modeling combined with simulation optimization methods to design the pipeline structure, but have not given a more mature pipeline design solution. When the starting point position or spatial layout of the two ends of the pipeline changes, recalculation is required, and there are also problems such as long calculation cycle and uncontrollable results.

[0037] Reference Figure 1-3 As shown, Figure 1 A schematic diagram of the structure of the pipeline system provided in the embodiment of the present application, Figure 2 This is a schematic diagram of the structure of a pipeline system provided in an embodiment of the present application from a top view. Figure 3 A schematic diagram of the structure of the first pipeline of the pipeline system provided in an embodiment of the present application. This embodiment discloses a pipeline system, which is applicable to equipment with a compressor or ventilation vibration, such as an air conditioner.

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

[0039] In this embodiment, the pipeline system also includes a compressor mount 5, and the compressor 3 is arranged on the compressor mount 5. The compressor mount 5 is used to fix the compressor 3 to reduce the movement of the compressor 3 during the driving of the vehicle and ensure the stable operation of the compressor 3. The compressor mount 5 can effectively absorb and disperse the vibration generated during the operation of the compressor 3, thereby protecting the vehicle body from damage and ensuring the stability of the vehicle during driving.

[0040] In this embodiment, the pipeline system also includes a pipe clamp 6, which is sleeved on the first pipeline 1 and is used to fix and support the first pipeline 1 to ensure that the pipeline remains stable during high-speed operation, reduce the occurrence of resonance, and thus improve the stability of the equipment.

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

[0042] In this embodiment, the bending angle a of the first bend pipe section 12 is in the range of 30° to 60°, so as to reduce the situation where the pipeline bending angle is too large, causing the flow of the fluid in the pipeline to encounter greater resistance and thus reduce the flow rate, and reduce the situation where the pipeline bending angle is too small, causing the pipeline to be subjected to excessive stress during the bending process and thus cracks, thereby ensuring the normal operation of the pipeline.

[0043] In this embodiment, the angle b between the projections of the axes of two adjacent first straight pipe sections 11 that are not in the same plane on the horizontal plane is ≥45°, so that when the pipeline is arranged to be tangent to the outer wall of the compressor as much as possible, there is no need to increase the number of pipeline sections and the pipeline length, thereby ensuring that the pipeline system has a compact structure.

[0044] The bending angle of the first bent pipe section 12 of the present embodiment is a, a<90°. By adopting a small-angle bending structure to replace the right-angle bend or U-shaped bend of the traditional pipeline structure, the 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 the life of the pipeline. The small-angle bending structure is also used to reduce the flow resistance of the refrigerant in the pipeline, thereby improving the flow efficiency of the refrigerant, reducing noise, reducing the difficulty of forming, and further reducing the requirements for precision and equipment. In the present embodiment, the angle between the projections of the axes of the two adjacent first straight pipe sections 11 that are not in the same plane on the horizontal plane is b, b≥20°, so as to reduce the situation where the angle is too small to cause fluid turbulence, vibration interference or increase noise in the pipeline, thereby ensuring the stability of the pipeline.

[0045] Reference Figure 1 As shown, the bending angle of the second curved pipe section 22 is M, M≥90°, so as to reduce the situation where the oil cannot effectively return to the compressor 3, thereby ensuring the normal operation of the compressor 3.

[0046] In this embodiment, the first pipeline 1 is an exhaust pipe, the second pipeline 2 is a return pipe, the bending angle a of the first curved pipe section 12 is less than 90°, and the bending angle M of the second curved pipe section 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 pipeline 1 can also be a return pipe, and the second pipeline 2 can also be an exhaust pipe.

[0047] Reference Figure 4-5 As shown, Figure 4 This is a schematic diagram of the structure of another embodiment of the pipeline system provided in the embodiment of the present application. Figure 5 A schematic diagram of a top view of another embodiment of the pipeline system provided in the embodiment of the present application. In one embodiment, the bending angle M of the second curved pipe section 22 is less than 90°. By making the first pipeline 1 and the second pipeline 2 both adopt a small-angle bending structure, the stress concentration level at the bend is further reduced, thereby further reducing the occurrence of resonance phenomenon and improving the stability and reliability of the pipeline system structure.

[0048] In this embodiment, the bending angle M of the second bend pipe section 22 is in the range of 30° to 60°, so as to reduce the situation where the pipeline bending angle is too large, causing the flow of the fluid in the pipeline to encounter greater resistance and thus reduce the flow rate, and reduce the situation where the pipeline bending angle is too small, causing the pipeline to be subjected to excessive stress during the bending process and thus cracks, thereby ensuring the normal operation of the pipeline.

[0049] Reference Figure 3As shown, the wall thickness of the first pipeline 1 and the second pipeline 2 ranges from 0.75 mm to 1.5 mm. Preferably, the wall thickness of the first pipeline 1 and the second pipeline 2 is 0.75 mm to reduce the situation where the first pipeline 1 and the second pipeline 2 are easily broken due to insufficient strength caused by the wall thickness being too small, and reduce the situation where the wall thickness is too large, resulting in increased costs and affecting the fluid flow in the pipeline, thereby ensuring the normal operation of the pipeline system. Specifically, the wall thickness of the first pipeline 1 and the second pipeline 2 can be 0.85 mm, 1 mm, 1.12 mm, 1.31 mm, 1.44 mm, etc.

[0050] Reference Figure 3 As shown, the diameter of the first pipeline 1 and the second pipeline 2 is D, D≥6mm. The bending radius of the first curved pipe section 12 and the second curved pipe section 22 is R, R≥1.5D, preferably, R can be 25mm or 40mm, so as to reduce the situation that the bending radius is too small or too large, which causes the first pipeline 1 and the second pipeline 2 to be easily deformed, resulting in damage to the pipeline, destroying the sealing performance, and causing fluid leakage, thereby ensuring the stability of the pipeline, thereby ensuring the refrigeration effect of the system and the service life of the pipeline.

[0051] This embodiment uses a small-angle bending structure in combination with a relatively large bending radius, which helps to reduce the thinning rate and bending flattening rate of the wall thickness of the first bend pipe section 12 and the second bend pipe section 22, and also reduces the stress concentration during the bending forming process of the first bend pipe section 12 and the second bend pipe section 22, and reduces the occurrence of defects such as cracks, wrinkles, and rips, thereby improving the overall strength and pressure-bearing capacity of the first pipeline 1 and the second pipeline 2.

[0052] Reference 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 P between the axes of two adjacent straight pipes 110 is P, P≥8D, thereby reducing the situation where the cooling airflow is restricted due to the small spacing between the straight pipes 110, thereby causing the compressor 3 to overheat, and also reducing the situation where the pipeline arrangement is too close, which leads to inconvenient maintenance and easy resonance, thereby improving the service life of the equipment and ensuring the normal operation of the air-conditioning system. Specifically, the vertical distance P between the axes of two adjacent straight pipes 110 can be 49 mm, 51 mm, 55 mm, etc.

[0053] Reference Figure 3 As shown, the length of the first straight pipe section 11 between two adjacent first curved pipe sections 12 is L, L≥1.5D. When processing the pipeline, the pipeline clamped by the clamp and the curved pipe section that will be deformed cannot interfere with each other. Therefore, it is necessary to limit the minimum size of L to reduce the difficulty of processing the pipeline, reduce the requirements for processing equipment, and facilitate processing.

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

[0055] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A piping system, characterized in that: include: A first pipeline, the first pipeline is connected to the compressor, the first pipeline comprises a plurality of first straight pipe sections and a plurality of first curved pipe sections, the plurality of first straight pipe sections and the plurality of first curved pipe sections are staggeredly connected to form the first pipeline; The bending angle of the first curved pipe section is a, a<90°, and the included angle between the projections of the axes of two adjacent first straight pipe sections not in the same plane on the horizontal plane is b, b≥20°.

2. The piping system according to claim 1, characterized in that: The bending angle a of the first curved pipe section ranges from 30° to 60°.

3. The piping system according to claim 1, characterized in that: The projection of the axis of the first pipeline on the horizontal plane is tangent to the outer wall surface of the compressor.

4. The pipeline system according to claim 1, characterized in that: The compressor is provided with an exhaust port and an air return port, the first pipeline is connected to the exhaust port, the pipeline system also includes a second pipeline, the second pipeline is connected to the air return port, the second pipeline includes a plurality of second straight pipe sections and a plurality of second curved pipe sections, and the plurality of second straight pipe sections and the plurality of second curved pipe sections are staggeredly connected to form the second pipeline.

5. The pipeline system according to claim 4, characterized in that: The bending angle of the second curved pipe section is M, where M≤90°.

6. The pipeline system according to claim 4, characterized in that: The wall thickness of the first pipeline and the second pipeline ranges from 0.75 mm to 1.5 mm.

7. The pipeline system according to claim 4, characterized in that: The diameters of the first pipeline and the second pipeline are D, D≥6mm, and the bending radii of the first curved pipe section and the second curved pipe section are R, R≥1.5D.

8. The pipeline system according to claim 7, characterized in that: The first straight pipe section includes a plurality of straight pipes extending in a vertical direction, and a vertical distance between axes of two adjacent straight pipes is P, where P≥8D.

9. The pipeline system according to claim 7, characterized in that: The length of the first straight pipe section between two adjacent first curved pipe sections is L, where L≥1.5D.

10. The pipeline system according to any one of claims 1 to 9, characterized in that: The pipeline system further includes a pipe clamp, and the pipe clamp is sleeved on the first pipeline.

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