A multi-lane conduit structure and fluid delivery device

Abstract

This utility model provides a multi-channel pipeline structure and a fluid conveying device. The multi-channel pipeline structure includes a main pipeline, a buffer pipeline, and branch pipelines. The main pipeline is provided with an inlet for fluid entry. The first and second ends of the buffer pipeline are respectively connected to different positions on the main pipeline. The buffer pipeline and the main pipeline are connected to form an annular channel for buffering fluid pressure fluctuations. The branch pipeline is connected to the main pipeline and located between the first and second ends of the buffer pipeline for fluid output. The buffer pipeline has a pressure stabilizing effect, can quickly buffer pressure fluctuations in the main pipeline, and is low in cost and occupies little space.

Description

Technical Field

[0001] This utility model relates to the field of fluid transportation, and in particular to a multi-channel pipeline structure and fluid transportation equipment. Background Technology

[0002] Fluid transport equipment is a key engineering device used to transport liquids, gases, and other fluids, and is widely used in chemical, energy, metallurgical, and agricultural fields. Fluid transport equipment often employs multi-channel pipelines, with the main pipeline branching into multiple branches, each with its own detection and control instruments. This branching structure can cause sudden pressure changes in the main pipeline when branch valves are opened or closed, or when flow rates are adjusted. This can lead to false alarms on the branch instruments and affect the equipment's output and operational stability.

[0003] For corrosive fluids, high-temperature fluids, etc., that cannot be discharged by pressure relief, the traditional solution is usually to add an expansion buffer tank or a PID (proportional-integral-derivative) regulating valve to the pipeline to stabilize the pressure fluctuations of the fluid.

[0004] However, the expansion buffer tank requires a large installation and fixing space, resulting in a larger equipment size and the need for subsequent maintenance, which increases costs; the PID control valve has a response lag problem, which also leads to high equipment costs. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-channel pipeline structure and fluid transport equipment, which stabilizes fluid pressure fluctuations by adding a buffer pipeline. The buffer pipeline is small in size and low in cost, thereby solving the above-mentioned technical problems in the prior art.

[0006] According to a first aspect of the present invention, a multi-channel pipeline structure is provided, comprising:

[0007] The main pipeline is provided with an inlet for fluid to enter;

[0008] A buffer pipeline, with its first and second ends connected to different positions on the main pipeline, is connected to the main pipeline to form an annular channel for buffering fluid pressure fluctuations.

[0009] A branch line, which is connected to the main line and located between the first and second ends of the buffer line, is used for fluid output.

[0010] In one embodiment of this utility model, a main tee is further included, wherein two of the ports of the main tee are respectively connected to the input port of the main pipeline and the first end of the buffer pipeline, and the other port of the main tee is used for fluid input.

[0011] In one embodiment of the present invention, one end of the main pipeline is connected to the first end of the buffer pipeline, and the other end of the main pipeline is connected to the second end of the buffer pipeline.

[0012] In one embodiment of this utility model, the effective cross-sectional area of ​​the buffer pipeline is greater than the effective cross-sectional area of ​​the branch pipeline.

[0013] In one embodiment of this utility model, multiple branch pipelines are provided and are connected sequentially to the main pipeline.

[0014] In one embodiment of the present invention, the effective cross-sectional area of ​​the buffer pipeline is at least twice the sum of the effective cross-sectional areas of the plurality of branch pipelines.

[0015] In one embodiment of this utility model, the buffer pipeline is a U-shaped pipe, and the main pipeline is a straight pipe in the section between the first end and the second end of the buffer pipeline.

[0016] In one embodiment of the present invention, at least one of the branch pipes is connected to a control component for controlling the on / off state of the branch pipe and / or for adjusting the flow rate.

[0017] In one embodiment of the present invention, at least one of the branch pipes is connected to a detection device for detecting the flow rate or pressure of the fluid.

[0018] According to a second aspect of the present invention, a fluid transport device is also provided, including the multi-channel pipeline structure described above.

[0019] One beneficial effect of this utility model is that:

[0020] By adding a buffer pipe to the main pipeline of a multi-channel pipeline structure, a ring-shaped channel is formed to buffer fluid pressure fluctuations. The main pipeline supplies fluid to the branch pipelines. When switching between branch pipelines or adjusting the flow rate of branch pipelines, sudden changes in fluid flow causing pressure fluctuations in the main pipeline can be transmitted bidirectionally through the ring-shaped channel and partially offset. This quickly buffers pressure fluctuations in the main pipeline, stabilizes fluid pressure, reduces pipeline impact, and minimizes false alarms or fluid supply interruptions caused by pressure fluctuations, thus ensuring production efficiency. The buffer pipe also increases the total volume of the multi-channel pipeline structure; the increased fluid volume can absorb instantaneous pressure changes, providing a pressure stabilizing effect. The buffer pipe has advantages such as low cost, small footprint, faster pressure stabilization response, and improved fluid supply reliability. In the event of a main pipeline failure, the buffer pipe can maintain fluid supply.

[0021] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0023] Figure 1 This is a schematic diagram of a multi-channel pipeline structure provided in an embodiment of this utility model.

[0024] The reference numerals and their corresponding component names in the figure are as follows:

[0025] 1. Main pipeline; 2. Buffer pipeline; 3. Branch pipeline; 4. Main tee; 5. Branch tee. Detailed Implementation

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] Unless otherwise stated, "multiple" means two or more.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0032] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0033] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0034] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0035] In this document, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meaning of these terms in this invention based on the specific circumstances.

[0036] In the description of the implementation, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0037] Wherever possible, the various aspects and features described and illustrated in this specification may be applied individually, and these individual aspects may serve as the subject matter of a divisional application.

[0038] This utility model provides a multi-channel pipeline structure and a fluid transport device including the above-mentioned multi-channel pipeline structure. Figure 1 An embodiment of the multi-channel pipeline structure provided by this utility model is shown.

[0039] The multi-channel pipeline structure includes a main pipeline 1, a buffer pipeline 2, and a branch pipeline 3.

[0040] The main pipeline 1 is equipped with an inlet for fluid entry. Branch pipelines 3 are connected to the main pipeline 1, and there is at least one branch pipeline 3. The inlet of the main pipeline 1 can be connected to devices such as water pumps and fans to drive fluid into the main pipeline 1.

[0041] Fluid enters the inlet of main pipe 1, and then flows from main pipe 1 into branch pipe 3, which is used to output fluid. Figure 1 The middle arrow points to the direction of fluid flow.

[0042] The two opposite ends of the buffer pipe 2 are the first end and the second end, respectively, which are connected to different locations on the main pipe 1. The buffer pipe 2 and the main pipe 1 are connected to form an annular channel for buffering fluid pressure fluctuations. The branch pipe 3 is located between the first end and the second end of the buffer pipe 2. At the two locations on the main pipe 1 connecting the first end and the second end of the buffer pipe 2, the fluid pressure can be balanced through the buffer pipe 2.

[0043] The branch pipe 3 can be connected to a control component to control its on / off state or adjust its flow rate to meet fluid supply needs. To improve the safety of fluid supply, data such as flow rate, flow volume, or pressure of the fluid in the branch pipe 3 can be monitored. If the fluid data exceeds the safe range, an alarm can be triggered, or the fluid drive device and pipeline valves can be automatically shut down.

[0044] Multiple branch lines 3 can be connected sequentially to the main pipeline 1. During normal switching between branch lines 3 or adjustment of their flow rates, sudden changes in fluid flow cause pressure fluctuations in the main pipeline 1. These pressure fluctuations are transmitted from the main pipeline 1 to the buffer pipeline 2, which quickly buffers these fluctuations, stabilizes the fluid pressure, reduces the impact on the pipeline, and minimizes false alarms or fluid supply interruptions caused by pressure fluctuations, thus ensuring production efficiency.

[0045] The buffer pipe 2 increases the fluid flow path, allowing the fluid to flow bidirectionally in the annular channel formed by the main pipe 1 and the buffer pipe 2. Pressure fluctuations can be transmitted bidirectionally through the annular channel and partially offset, reducing the impact of single-point sudden changes on the whole.

[0046] Furthermore, fluid can flow to branch pipe 3 through different directional paths, reducing the amplitude of local flow rate changes and slowing down the propagation speed of pressure fluctuations.

[0047] The buffer line 2 also increases the total volume of the multi-channel pipeline structure. The increased fluid volume can absorb instantaneous pressure changes and has a pressure stabilizing effect.

[0048] The buffer line 2 can effectively buffer the pressure fluctuations in the main line 1, reduce the impact caused by pressure fluctuations in the pipeline and other equipment connected to the pipeline, and eliminate the need for additional equipment such as accumulators and safety valves.

[0049] Buffer line 2 has the advantages of low cost and small footprint. Compared with PID control valve, buffer line 2 has a faster pressure regulation response. Buffer line 2 can also improve the reliability of fluid supply. When the main line 1 fails, the fluid supply to each branch line 3 can be maintained through buffer line 2.

[0050] To ensure the pressure stabilization effect of buffer pipe 2, the effective cross-sectional area of ​​buffer pipe 2 is set to be greater than that of branch pipe 3.

[0051] In one embodiment, multiple branch pipes 3 are provided, and the multiple branch pipes 3 are sequentially connected to the main pipe 1. The effective cross-sectional area of ​​the buffer pipe 2 is at least twice the sum of the effective cross-sectional areas of the multiple branch pipes 3.

[0052] The number of branch pipes 3 is n, and the effective cross-sectional areas of each branch pipe 3 are as follows:

[0053] A1, A2, A3...An.

[0054] The effective cross-sectional area of ​​buffer pipe 2 is S, and S must satisfy:

[0055] S≥2×(A1+A2+……+An).

[0056] When the control components on multiple branch pipes 3 are turned off or on simultaneously, the buffer pipe 2 can also provide a good buffering effect.

[0057] The main pipeline 1 and the buffer pipeline 2 can use the same type of pipe fittings with the same diameter to form an annular channel with uniform internal pressure, which is beneficial to the stability of the fluid.

[0058] In one specific embodiment, the buffer pipe 2 is a U-shaped pipe, and the section of the main pipe 1 between the first and second ends of the buffer pipe 2 is a straight pipe. A straight pipe offers less resistance to the fluid, avoiding the increase in resistance to the fluid in the main pipe 1 caused by bends altering the fluid flow direction, thus minimizing pressure loss. The buffer pipe 2 uses a U-shaped pipe to facilitate connection of the first and second ends to the main pipe 1.

[0059] The input port can be located at the end of the main pipeline 1 or at other locations on the main pipeline 1.

[0060] The first and / or second ends of the buffer pipe 2 can be connected to the end of the main pipe 1, or they can be connected between the two ends of the main pipe 1.

[0061] In some implementations, the inlet is located at one end of the main pipeline 1, and the first end of the buffer pipeline 2 can be connected to the inlet via a tee or to a position near the inlet; the second end of the buffer pipeline 2 is connected to the end of the main pipeline 1 or to a position near the end of the main pipeline 1 via a tee.

[0062] like Figure 1 In one specific embodiment shown, one end of the main pipeline 1 is designated as the inlet, and the other end is defined as the outlet. The inlet of the main pipeline 1 is connected to a main tee 4. Two ports of the main tee 4 are respectively connected to the inlet of the main pipeline 1 and the first end of the buffer pipe 2. The other port of the main tee 4 is used for fluid input. The second end of the buffer pipe 2 is connected to the outlet of the main pipeline 1.

[0063] In other embodiments, the inlet is located between the opposite ends of the main pipe 1, with one end of the main pipe 1 connected to the first end of the buffer pipe 2 and the other end of the main pipe 1 connected to the second end of the buffer pipe 2. Specifically, fluid enters the main pipe 1 through the inlet and then flows to the opposite ends of the main pipe 1. Multiple branch pipes 3 are distributed sequentially along the length of the main pipe 1, and the multiple branch pipes 3 can be distributed on opposite sides of the inlet.

[0064] In some embodiments, at least one branch pipe 3 is connected to a control component for controlling the on / off state of the branch pipe 3 and / or for regulating the flow rate, such as a shut-off valve, a throttle valve, etc.

[0065] Furthermore, at least one branch pipe 3 is connected to a detection device for detecting the flow rate, volume, or pressure of the fluid, such as a pressure sensor or flow meter. The detection device may be equipped with an alarm, which is triggered when the detection device detects abnormal fluid data.

[0066] Taking the application of fluid conveying equipment in a modern industrial automated production line as an example, the main pipeline 1 supplies industrial fluids to different workstations through multiple branch pipelines 3. The fluid flows in the annular channel formed by the main pipeline 1 and the buffer pipeline 2. Throttling valves and pressure sensors are installed on the multiple branch pipelines 3 respectively. The flow rate can be controlled by the throttling valves, and the pressure sensors are used to detect the fluid pressure in the corresponding branch pipeline 3. The pressure sensors are electrically connected to an alarm. When the pressure sensor detects that the fluid pressure exceeds the safe range, it triggers the alarm. When the throttling valve of any branch pipeline 3 opens or closes or adjusts the flow rate, it causes a sudden pressure change, resulting in pressure fluctuations in the fluid in the main pipeline 1. The pressure fluctuations are transmitted to the first and second ends of the buffer pipeline 2. The bidirectional pressure fluctuations are consumed after entering the buffer pipeline 2, the speed is slowed down, and they are partially canceled out, thus buffering the pressure fluctuations and preventing the instantaneous pressure value from exceeding the safe range detected by the pressure sensor and triggering a false alarm.

[0067] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. A multi-channel pipeline structure, characterized in that, include: The main pipeline is provided with an inlet for fluid to enter; A buffer pipeline, with its first and second ends connected to different positions on the main pipeline, is connected to the main pipeline to form an annular channel for buffering fluid pressure fluctuations. A branch line, which is connected to the main line and located between the first and second ends of the buffer line, is used for fluid output.

2. The multi-channel pipeline structure according to claim 1, characterized in that, It also includes a main tee, two of which are connected to the inlet of the main pipeline and the first end of the buffer pipeline, respectively, and the other port of the main tee is used for fluid input.

3. The multi-channel pipeline structure according to claim 1, characterized in that, One end of the main pipeline is connected to the first end of the buffer pipeline, and the other end of the main pipeline is connected to the second end of the buffer pipeline.

4. The multi-channel pipeline structure according to claim 1, characterized in that, The effective cross-sectional area of ​​the buffer pipeline is greater than the effective cross-sectional area of ​​the branch pipeline.

5. The multi-channel pipeline structure according to claim 1, characterized in that, The branch pipelines are provided in multiple ways and are connected sequentially to the main pipeline.

6. The multi-channel pipeline structure according to claim 5, characterized in that, The effective cross-sectional area of ​​the buffer pipe is at least twice the sum of the effective cross-sectional areas of the multiple branch pipes.

7. The multi-channel pipeline structure according to claim 1, characterized in that, The buffer pipeline is a U-shaped pipe, and the main pipeline is a straight pipe between the first and second ends of the buffer pipeline.

8. The multi-channel pipeline structure according to any one of claims 1 to 7, characterized in that, At least one of the branch pipes is connected to a control component for controlling the on / off state of the branch pipe and / or for regulating the flow rate.

9. The multi-channel pipeline structure according to claim 8, characterized in that, At least one of the branch pipes is connected to a detection device for detecting the flow rate or pressure of the fluid.

10. A fluid conveying device, characterized in that, The multi-channel pipeline structure includes any one of claims 1 to 9.

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