Diaphragm compressor pipeline system and pulsation suppression device and deployment method thereof

Abstract

The invention discloses a diaphragm compressor pipeline system and a pulsation suppression device and a deployment method thereof, and relates to the technical field of diaphragm compressors, the device comprises a buffer tank body, an air inlet of the buffer tank body is provided with two clamping flanges, and the two clamping flanges are used for fixing a pulsation suppression hole pipe to the air inlet of the buffer tank body. The flow guide connector with the axial main hole plate and the circumferential small inclined holes is arranged at the air inlet of the buffer tank, high-pressure air flow passes through the main hole plate to form a main air flow channel, residual air flow is converted into rotating vortex through the small inclined holes, and the rotating vortex is uniformly dispersed to the central area of the tank body; part of high-pressure jet flow which is originally concentrated in the axial direction of the air inlet pipe is dispersed and sprayed in the circumferential direction of the air inlet pipe and makes full contact with gas in the buffer tank in different directions, the flow guiding effect of the inclined holes promotes entering high-pressure pulsating gas to further disturb other gas in the tank, and the use efficiency of the volume of the buffer tank is improved.

Description

Technical Field

[0001] This invention relates to the field of diaphragm compressor technology, specifically a diaphragm compressor piping system and its pulsation suppression device and deployment method. Background Technology

[0002] Diaphragm compressors, as a type of positive displacement compressor with a special structure, are characterized by a high compression ratio, good sealing, and protection against contamination from lubricating oil and other solid impurities. They are widely used in the compression of high-purity, rare, precious, toxic, harmful, and corrosive gases. In diaphragm compressors, the control of airflow pulsation is crucial. Pulsation can lead to decreased efficiency, increased energy consumption, noise pollution, and distorted instrument readings. Ultimately, the piping system may suffer rapid fatigue failure due to the severe vibrations caused by pulsation. Currently, there are some issues with pulsation suppression in the gas pipelines of existing multi-cylinder diaphragm compressors.

[0003] On the one hand, the inlet of a traditional buffer tank is a straight pipe weld or a simple flange connection. The airflow directly impacts the tank wall to form turbulence, resulting in the effective buffer volume being concentrated only in the area near the inlet. This creates a local high-pressure zone inside the tank, exacerbating energy dissipation rather than uniform diffusion. A larger volume is required to meet the pulsation attenuation requirements. The space at the far end of the tank cannot participate in pressure pulsation attenuation, which seriously reduces the pulsation suppression capability of the buffer tank.

[0004] On the other hand, when the pulsation exceeds the standard in actual operation, a larger capacity buffer tank is often used, which requires changes to the on-site pipeline layout, etc. The scope of changes is large, the change cycle is long, and the investment cost is high.

[0005] Based on this, a diaphragm compressor piping system and its pulsation suppression device and deployment method are provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0006] The purpose of this invention is to provide a diaphragm compressor piping system and its pulsation suppression device and deployment method to solve the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A pulsation suppression device for a diaphragm compressor pipeline system, characterized in that it includes a buffer tank, wherein the air inlet of the buffer tank is provided with two clamping flanges, the two clamping flanges being used to fix the pulsation suppression orifice tube to the air inlet of the buffer tank; The pulsation suppression orifice includes a clamping ring plate, an extended air inlet pipe, and a flow guide connector. The clamping ring plate is fixed to the air inlet end of the extended air inlet pipe and is clamped and fixed by two clamping flanges. The inner wall of the air outlet end of the extended air inlet pipe is provided with internal threads, and the outer wall of the air inlet end of the flow guide connector is provided with external threads. The air outlet end of the extended air inlet pipe and the air inlet end of the flow guide connector are installed by the cooperation of internal and external threads. The flow guide joint includes an axial main hole plate, and the side wall of the axial main hole plate has several small oblique holes evenly distributed around its circumference.

[0008] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative: sealing gaskets are provided at the contact points between the clamping ring plate and the two clamping flanges.

[0009] In one alternative: the flow guide joint is located inside the buffer tank near the central axis.

[0010] In one alternative: the axis of the several small oblique holes is tangent to the circumference of the extended intake pipe.

[0011] In one alternative: the diameter of the small oblique orifice is one-eighth of the diameter of the extended intake pipe.

[0012] In one alternative, the inclination angle of the small oblique hole is between 35 degrees and 55 degrees.

[0013] In one alternative: the diameter of the axial main orifice plate is between 0.45 and 0.5 times the diameter of the extended intake pipe orifice.

[0014] A diaphragm compressor piping system includes the aforementioned pulsation suppression device, which is connected in series between the compressor exhaust pipe and the buffer tank.

[0015] The deployment method of the pulsation suppression device for a diaphragm compressor piping system based on the above includes the following steps: Step 1: When the diaphragm compressor displays a large pulsation value in the gas pipeline during operation, numerical simulation can be performed by combining the operating parameters of the equipment and the structure of the gas pipeline system. Step 2: Based on the compressor's operating pressure, compressed medium, and pipeline structure characteristics, perform pressure fluctuation simulation and compare it with the measured pressure curve. Adjust the boundary conditions to make the two consistent, ensuring the accuracy of the numerical simulation. Step 3: Select an axial main bore plate with a suitable orifice diameter and small inclined hole parameters based on the pressure fluctuation characteristics, and perform numerical simulation optimization to confirm the optimal structure; Step 4: Use 3D printing to connect the air guide connector and extend the air inlet pipe through the threaded connection. Insert the pipe into the interior of the buffer tank near the central axis from the air inlet of the buffer tank to complete the deployment.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a flow guide with an axial main orifice plate and circumferential small oblique holes at the air inlet of the buffer tank. The high-pressure airflow forms the main airflow channel through the main orifice plate, and the remaining airflow is transformed into a rotating vortex through the small oblique holes, which is evenly dispersed to the central area of ​​the tank. The inclined design of the small hole axis at a certain tangent angle to the circumference of the air inlet pipe causes a portion of the originally concentrated high-pressure jet along the axial direction of the air inlet pipe to be dispersed and sprayed circumferentially into the air inlet pipe, and to fully contact the gas in the buffer tank in different directions. The guiding effect of the oblique holes causes the high-pressure pulsating gas entering to further disturb other gases in the tank, thereby increasing the utilization efficiency of the buffer tank volume.

[0017] 2. This invention adopts a modular design, allowing the flow guide connector to be quickly connected to the existing buffer tank inlet via a clamping flange, without altering the pipeline layout; combined with 3D printing manufacturing technology, it enables precise customization and rapid deployment of the flow guide connector; avoiding the high costs and long lead times caused by replacing large-capacity buffer tanks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the pulsation suppression orifice of the present invention.

[0020] Figure 3 This is a schematic diagram of the flow guide connector of the present invention.

[0021] Figure 4 This is a comparison diagram showing the effect of having and not having a flow guide joint on the turbulence intensity of the buffer tank in this invention.

[0022] Figure 5 This is a comparison diagram showing the pressure distribution of the buffer tank with and without the flow guide joint in this invention.

[0023] Figure 6 This is a schematic diagram illustrating the stress on the buffer tank body caused by the flow guide joint of the present invention.

[0024] Figure 7 This is a comparison curve of pressure changes inside the buffer tank under different structures according to the present invention.

[0025] Figure 8 This is a schematic diagram illustrating how the present invention converts a standing wave into a traveling wave.

[0026] Figure label annotations: 1. Pulsation suppression orifice; 1.1. Clamping ring plate; 1.2. Extended air inlet pipe; 1.3. Flow guide connector; 1.3.1. Small oblique hole; 1.3.2. Axial main orifice plate; 2. Sealing gasket; 3. Clamping flange; 4. Buffer tank. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figures 1-3 As shown, a pulsation suppression device for a diaphragm compressor pipeline system is characterized by comprising a buffer tank 4, wherein the air inlet of the buffer tank 4 is provided with two clamping flanges 3, the two clamping flanges 3 being used to fix the pulsation suppression orifice 1 to the air inlet of the buffer tank 4. The pulsation suppression orifice 1 includes a clamping ring plate 1.1, an extension inlet pipe 1.2, and a flow guide connector 1.3. The clamping ring plate 1.1 is fixed to the inlet end of the extension inlet pipe 1.2 and is clamped and fixed by two clamping flanges 3. The inner wall of the outlet end of the extension inlet pipe 1.2 is provided with internal threads, and the outer wall of the inlet end of the flow guide connector 1.3 is provided with external threads. The outlet end of the extension inlet pipe 1.2 and the inlet end of the flow guide connector 1.3 are installed by the internal and external threads engaging. The flow guide joint 1.3 includes an axial main hole plate 1.3.2, and the axial main hole plate 1.3.2 has several small oblique holes 1.3.1 evenly distributed circumferentially on its side wall.

[0029] In this embodiment, the pulsation suppression orifice 1 and the buffer tank 4 are detachably connected by the clamping flange 3, which facilitates quick replacement of the flow guide 1.3 with different parameters.

[0030] The compressor exhaust pulse enters the guide joint 1.3 through the extended intake pipe 1.2. The axial main orifice plate 1.3.2 forms the main airflow channel, releasing most of the airflow energy along the axial direction of the buffer tank 4. The circumferentially evenly distributed small oblique holes 1.3.1 convert the remaining airflow into rotating vortices, reducing the impact of high-pressure airflow on the buffer tank 4, while forming dispersed small rotating vortices to disrupt the high-energy vortices.

[0031] In one embodiment, such as Figure 1 As shown, sealing gaskets 2 are provided at the contact positions between the clamping ring plate 1.1 and the two clamping flanges 3.

[0032] The pulsation suppression orifice 1 is connected to the buffer tank 4 via the clamping flange 3, and a sealing gasket 2 is provided at the connection to ensure the high-pressure gas sealing.

[0033] In one embodiment, such as Figure 1 As shown, the flow guide joint 1.3 is located near the central axis inside the buffer tank 4, thereby causing the vortex to form a spiral flow in the central region of the buffer tank 4, driving the gas in the entire tank to participate in energy exchange and improving the volume utilization rate of the buffer tank 4.

[0034] In one embodiment, such as Figure 3As shown, the axis of several of the small oblique holes 1.3.1 is tangent to the circumference of the extended intake pipe 1.2.

[0035] Several small oblique holes 1.3.1 convert the axial airflow into radial and circumferential jets, which are fully mixed with the gas inside the buffer tank 4, thereby achieving rapid and uniform energy distribution and driving energy exchange over a larger range of the gas inside the buffer tank 4, thus improving the volume utilization rate of the buffer tank 4.

[0036] In one embodiment, such as Figure 1 and Figure 3 As shown, the diameter of the small oblique hole 1.3.1 is one-eighth of the diameter of the extended intake pipe 1.2, thereby ensuring sufficient jet velocity to form an effective vortex.

[0037] In one embodiment, such as Figure 3 As shown, the inclination angle of the small oblique hole 1.3.1 is between 35 degrees and 55 degrees, thereby achieving the optimal radial and circumferential velocity components and promoting vortex diffusion.

[0038] In one embodiment, such as Figure 1 and Figure 2 As shown, the aperture of the axial main orifice plate 1.3.2 is between 0.45 and 0.5 times the aperture of the extended intake pipe 1.2, which ensures the smoothness of the main airflow, the efficiency of vortex energy dissipation, and the long-term reliability of the device.

[0039] Example 2 A diaphragm compressor piping system includes the aforementioned pulsation suppression device, which is installed in series between the compressor exhaust pipe and the buffer tank to ensure that the airflow direction is consistent with the axial main orifice plate 1.3.2 of the flow guide joint 1.3.

[0040] Example 3 The deployment method of the pulsation suppression device for a diaphragm compressor piping system based on the above includes the following steps: Step 1: When the diaphragm compressor displays a large pulsation value in the gas pipeline during operation, numerical simulation can be performed by combining the operating parameters of the equipment and the structure of the gas pipeline system. Step 2: Based on the compressor's operating pressure, compressed medium, and pipeline structure characteristics, perform pressure fluctuation simulation and compare it with the measured pressure curve. Adjust the boundary conditions to make the two consistent, ensuring the accuracy of the numerical simulation. Step 3: Select the appropriate parameters for the axial main bore plate (1.3.2) and the small inclined bore (1.3.1) based on the pressure fluctuation characteristics, and perform numerical simulation optimization to confirm the optimal structure; Step 4: Use 3D printed flow guide connector 1.3 and extend the air inlet pipe 1.2 through threaded connection to extend it into the interior of the buffer tank 4 near the central axis position from the air inlet of the buffer tank 4 to complete the deployment.

[0041] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pulsation suppression device for a diaphragm compressor piping system, characterized in that, Includes a buffer tank (4), the air inlet of which is provided with two clamping flanges (3), the two clamping flanges (3) are used to fix the pulsation suppression orifice (1) to the air inlet of the buffer tank (4); The pulsation suppression orifice (1) includes a clamping ring plate (1.1), an extension inlet pipe (1.2), and a flow guide (1.3). The clamping ring plate (1.1) is fixed to the inlet end of the extension inlet pipe (1.2). The clamping ring plate (1.1) is clamped and fixed by two clamping flanges (3). The inner wall of the outlet end of the extension inlet pipe (1.2) is provided with an internal thread, and the outer wall of the inlet end of the flow guide (1.3) is provided with an external thread. The outlet end of the extension inlet pipe (1.2) and the inlet end of the flow guide (1.3) are installed by the internal and external threads. The flow guide joint (1.3) includes an axial main hole plate (1.3.2), and the axial main hole plate (1.3.2) has several small oblique holes (1.3.1) evenly distributed around its sidewall.

2. The pulsation suppression device for a diaphragm compressor piping system according to claim 1, characterized in that, Sealing gaskets (2) are provided at the contact positions of the clamping ring plate (1.1) and the two clamping flanges (3).

3. The pulsation suppression device for a diaphragm compressor piping system according to claim 1, characterized in that, The flow guide joint (1.3) is located inside the buffer tank (4) near the central axis.

4. The pulsation suppression device for a diaphragm compressor piping system according to claim 1, characterized in that, The axis of several of the small oblique holes (1.3.1) is tangent to the circumference of the extended intake pipe (1.2).

5. A pulsation suppression device for a diaphragm compressor piping system according to claim 4, characterized in that, The diameter of the small oblique hole (1.3.1) is one-eighth the diameter of the extended intake pipe (1.2).

6. The pulsation suppression device for a diaphragm compressor piping system according to claim 4, characterized in that, The inclination angle of the small oblique hole (1.3.1) is between 35 degrees and 55 degrees.

7. The pulsation suppression device for a diaphragm compressor piping system according to claim 1, characterized in that, The diameter of the axial main orifice plate (1.3.2) is between 0.45 and 0.5 times the diameter of the extended intake pipe (1.2).

8. A diaphragm compressor piping system, characterized in that, The device includes the pulsation suppression device according to any one of claims 1-7, wherein the device is installed in series between the compressor exhaust pipe and the buffer tank.

9. A method for deploying a pulsation suppression device for a diaphragm compressor piping system according to any one of claims 1 to 7, characterized in that, Includes the following steps: Step 1: When the diaphragm compressor displays a large pulsation value in the gas pipeline during operation, numerical simulation can be performed by combining the operating parameters of the equipment and the structure of the gas pipeline system. Step 2: Based on the compressor's operating pressure, compressed medium, and pipeline structure characteristics, perform pressure fluctuation simulation and compare it with the measured pressure curve. Adjust the boundary conditions to make the two consistent, ensuring the accuracy of the numerical simulation. Step 3: Select the appropriate axial main hole plate (1.3.2) and small inclined hole (1.3.1) parameters based on the pressure fluctuation characteristics, and perform numerical simulation optimization to confirm the optimal structure; Step 4: Use a 3D printed flow guide connector (1.3) and extend the air inlet pipe (1.2) through a threaded connection to insert it into the interior of the buffer tank (4) near the central axis position from the air inlet of the buffer tank (4) to complete the deployment.

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