A flow stabilizing channel for a high-pressure plunger pump

Abstract

This utility model discloses a flow stabilizing channel for a high-pressure plunger pump. The channel, assembled at the inlet end of the pump, includes a first flange welded to the inlet pipe and a flow stabilizing pipe mounted on the first flange. A guide groove frame is inserted into the port of the flow stabilizing pipe. The guide groove frame includes a centrally located portion. A hemispherical metal cover with an arcuate apex corresponding to the axis of the inlet pipe is fixedly installed on one side of the central portion, while an arc-shaped metal cover is fixedly installed on the other side. The two metal covers are connected and filled with carbon dioxide gas at a predetermined pressure. This utility model integrates an inflatable flexible buffer unit inside the inlet channel to stabilize the flow and dampen vibrations from the fluid inlet end.

Description

Technical Field

[0001] This utility model relates to a high-pressure plunger pump, specifically to a flow stabilizing channel for a high-pressure plunger pump. Background Technology

[0002] Due to its inherent reciprocating piston working principle, high-pressure plunger pumps exhibit significant pulsation in their instantaneous output flow, leading to periodic fluctuations in outlet pressure. This intense flow and pressure pulsation presents a series of serious technical challenges: First, it causes severe vibration and harsh noise throughout the hydraulic system, deteriorating the working environment and posing compliance risks. Secondly, continuous pulsating impacts will accelerate the fatigue aging of the pump body itself and related components such as pipelines, seals, and actuators, significantly reducing its service life and the reliability of the entire system.

[0003] In conclusion, effectively suppressing flow and pressure pulsations is a crucial issue for improving the performance and reliability of high-pressure plunger pumps, and a good solution is expected to be found! Utility Model Content

[0004] The purpose of this invention is to provide a flow stabilizing channel for a high-pressure plunger pump to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flow stabilizing channel for a high-pressure plunger pump, which is assembled at the water inlet end of the high-pressure plunger pump, including a first flange welded to the water inlet pipe and a flow stabilizing pipe installed on the first flange, wherein a flow guide frame is inserted into the port of the flow stabilizing pipe, and the flow guide frame includes a centrally distributed part. A hemispherical metal cover with an arc apex corresponding to the axis of the water inlet pipe is fixedly installed on one side of the central part, while an arc-shaped metal cover is fixedly installed on the other side. The two metal covers are connected and filled with carbon dioxide gas at a predetermined pressure.

[0006] Preferably, the guide channel frame has a central part fixedly arranged on its axis, and the central part is fixedly connected to the guide channel frame by a bracket arranged in a circular array.

[0007] Preferably, the length of the bracket is five to eight centimeters, and the number is no less than five.

[0008] Preferably, the flow stabilizing pipe includes an inner arc flow guide shroud, the inner arc surface of which is distributed toward the arc-shaped metal shroud.

[0009] Preferably, the straight-line distance between the hemispherical metal cover and the first flange does not exceed six centimeters.

[0010] Preferably, the port of the inner arc guide shroud includes a cylindrical body, and at least two spiral protrusions are fixedly provided on the inner wall of the cylindrical body.

[0011] Preferably, a guide tube is fixedly installed at the apex of the inner arc guide shroud, and one end of the guide tube extending into the interior of the inner arc guide shroud is an inner tube body, the port of the inner tube body being flush with the port of the inner arc guide shroud. The end of the guide pipe extending to the outside of the inner arc guide shroud is an outer flange pipe body.

[0012] Preferably, an inner guide pipe is fixedly disposed inside the inner tube body and is fixedly connected to the outer flange tube body, and a guide cavity is formed between the inner guide pipe and the inner tube body; The inner guide tube has a matrix of guide holes.

[0013] Preferably, the circumferential radius of the outer wall of the inner tube is one-third or one-quarter of the circumferential radius of the arc-shaped metal cover.

[0014] In the above technical solution, the flow stabilizing channel of the high-pressure plunger pump provided by this utility model has the following beneficial effects: 1. The guide groove frame and centrally located hemispherical metal cover at the flow stabilizing pipe port effectively manage the turbulent water flow from the inlet pipe, guiding it smoothly into the flow stabilizing pipe and reducing eddy current generation. Specifically, when the water flow impacts the hemispherical metal cover, its arc-shaped structure evenly disperses the impact force and works in conjunction with the subsequent arc-shaped metal cover. The carbon dioxide gas sealed inside both metal covers acts as a compressible air cushion buffer unit, instantly absorbing and releasing the energy of water flow pulsations, achieving peak shaving and valley filling of the flow rate, thus significantly stabilizing the inlet flow rate and effectively reducing the risk of cavitation cavitation caused by sudden pressure changes, protecting the internal components of the pump body.

[0015] 2. The guide channel frame and centrally located hemispherical metal cover at the flow stabilizing pipe port effectively manage the turbulent water flow from the inlet pipe, guiding it smoothly into the flow stabilizing pipe and reducing eddy current generation. Furthermore, when the water flow impacts the hemispherical metal cover, its arc-shaped structure evenly disperses the impact force and works in conjunction with the subsequent arc-shaped metal cover. The sealed carbon dioxide gas inside both metal covers acts as a compressible air cushion buffer unit, instantly absorbing and releasing the energy of water flow pulsations, achieving peak shaving and valley filling of the flow rate, thus significantly stabilizing the inlet flow rate and effectively reducing the risk of cavitation cavitation caused by sudden pressure changes, protecting the internal components of the pump body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the exploded structure provided for an embodiment of the present utility model; Figure 3 A schematic diagram of the structure of the first flange, flow stabilizer, and inner arc guide shield provided in this embodiment of the utility model; Figure 4 A schematic diagram of the cross-sectional structure of the central part provided in an embodiment of this utility model; Figure 5 A cross-sectional structural diagram of the inner arc guide shield and guide tube provided for an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. First flange; 2. Flow stabilizer pipe; 21. Inner arc guide shroud; 22. Cylinder body; 23. Spiral protrusion; 3. Flow guide groove frame; 31. Center part; 32. Support; 4. Hemispherical metal cover; 5. Arc-shaped metal cover; 6. Flow guide pipe; 61. Inner pipe body; 62. Outer flange pipe body; 63. Inner guide pipe; 631. Flow guide hole. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-5 As shown, a flow stabilizing channel for a high-pressure plunger pump includes the following embodiments: Example 1

[0021] like Figure 1 As shown, this embodiment provides a flow stabilizing channel for a high-pressure plunger pump, which is fixed to the end of the inlet pipe (not shown in the figure) of the high-pressure plunger pump by welding. The flow stabilizing channel mainly includes a first flange 1, a flow stabilizing pipe 2, a flow guide frame 3, and a pair of special metal covers.

[0022] Specifically, the first flange 1 is welded to the end of the inlet pipe, serving as the mounting base for the entire flow stabilization channel. The flow stabilization pipe 2 is fixedly installed on the first flange 1 by bolts, and its interior forms the main channel for water flow.

[0023] The key feature is that a flow guide frame 3 is inserted and installed at the inlet port of the flow stabilizer 2. A central portion 31 is fixedly mounted on the axis of this flow guide frame 3, and the central portion 31 is fixedly connected to the annular outer frame of the flow guide frame 3 by multiple supports 32 arranged in a circumferential array. These supports 32 minimize water flow resistance while ensuring structural strength. As a preferred embodiment, the length of these supports 32 is between five and eight centimeters, and the number is no less than five, to ensure stable support for the central portion 31 and good flow guiding effect.

[0024] On both sides of the central section 31, two connected metal covers are fixedly installed: a hemispherical metal cover 4 facing the water inlet pipe, with its arc apex aligned with the axis of the water inlet pipe; and an arc-shaped metal cover 5 facing away from the water inlet pipe. The two metal covers connect the internal cavities through their joint and are pre-filled with carbon dioxide gas at a specific pressure during the manufacturing process. This design constitutes a built-in "air cushion" buffer unit.

[0025] Working principle: When the high-pressure plunger pump is working, the fluid from the inlet pipe first impacts the hemispherical metal casing 4. Its hemispherical structure effectively guides and disperses the impact force. Pressure pulsations in the fluid are transmitted to the carbon dioxide gas inside through the metal casing wall. Because the gas is compressible, it can instantly absorb the peak pressure of the fluid ("peak accumulation") and expand and release when the pressure decreases ("valley filling"), thus efficiently smoothing flow and pressure pulsations and suppressing cavitation.

[0026] Example 2

[0027] Based on Example 1, in order to further improve the flow stabilization effect, the internal structure of the flow stabilization tube 2 has been optimized in this example.

[0028] See Figure 2 An inner arc guide shroud 21 is fixedly installed on the inner wall of the flow stabilizer 2. The inner arc surface of the inner arc guide shroud 21 is distributed facing the arc-shaped metal cover 5, and is used to guide the fluid after it has been guided by the arc-shaped metal cover 5, making its flow smoother. The straight-line distance between the apex of the hemispherical metal cover 4 and the first flange 1 is controlled within six centimeters. This size range ensures that the buffer unit is placed in the critical area where the fluid kinetic energy is most concentrated, and the response is most sensitive.

[0029] Furthermore, an integrally formed cylindrical body 22 is provided at the port of the inner arc guide shroud 21. At least two helical protrusions 23 are fixedly provided on the inner wall of the cylindrical body 22. These helical protrusions 23 can impart a tangential velocity to the fluid, causing it to generate a gentle swirling flow. This swirling flow helps to break up large eddies, making the fluid velocity distribution more uniform, and can gather any potentially present microbubbles towards the center of the flow channel, reducing the damage to the components caused by their rupture upon contact with the wall surface.

[0030] Example 3

[0031] Based on Embodiment 2, this embodiment adds an auxiliary flow guiding structure to cope with more complex working conditions.

[0032] like Figure 3 As shown, a guide pipe 6 is fixedly installed at the apex of the inner arc guide shroud 21. One end of the guide pipe 6 extending into the inner arc guide shroud 21 is an inner pipe body 61, its port flush with the inlet port of the inner arc guide shroud 21. The other end of the guide pipe 6 extending outside the inner arc guide shroud 21 is an outer flange pipe body 62, which can be used to connect to external supplementary water sources or chemical additive injection pipelines, etc.

[0033] An inner guide pipe 63, coaxial with the inner tube body 61, is fixedly installed inside the inner tube body 61. The inner guide pipe 63 is fixedly connected to the outer flange tube body 62. The annular space between the inner guide pipe 63 and the inner tube body 61 forms a guide cavity. Multiple guide holes 631 are evenly distributed in a matrix on the wall of the inner guide pipe 63.

[0034] Working principle When external fluid is introduced through the outer flange pipe body 62, the fluid first enters the inner guide pipe 63, and then is evenly sprayed into the guide cavity through the matrix-distributed guide holes 631. Finally, it mixes smoothly and thoroughly with the fluid from the main flow channel of the stabilizing pipe 2 at the inlet of the inner arc guide shroud 21. This design avoids the impact of a single jet on the main flow, ensuring the uniformity of mixing, and is particularly suitable for occasions where online addition of chemicals or introduction of water sources at different temperatures is required.

[0035] As a preferred dimensional relationship, the circumferential radius of the outer wall of the inner tube 61 is designed to be one-third or one-quarter of the circumferential radius of the outer arc-shaped metal cover 5. This ratio ensures an appropriate flow area between the auxiliary flow channel and the main flow channel, which neither affects the stabilization effect of the main flow nor hinders the effective mixing of the auxiliary fluid.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flow stabilizing channel for a high-pressure plunger pump, which is assembled at the inlet end of the high-pressure plunger pump, characterized in that, It includes a first flange (1) welded to the water inlet pipe and a flow stabilizing pipe (2) installed on the first flange (1). The port of the flow stabilizing pipe (2) is connected to a flow guide frame (3), and the flow guide frame (3) includes a centrally distributed central part (31). One side of the central part (31) is fixedly installed with a hemispherical metal cover (4) whose arc top is distributed with the axis of the water inlet pipe, while the other side is fixedly installed with an arc-shaped metal cover (5). The two metal covers are connected and filled with carbon dioxide gas at a predetermined pressure.

2. The flow stabilizing channel of a high-pressure plunger pump according to claim 1, characterized in that, The guide channel frame (3) has a central part (31) fixedly arranged on its axis, and the central part (31) is fixedly connected to the guide channel frame (3) and the support (32) arranged in a circular array.

3. The flow stabilizing channel of a high-pressure plunger pump according to claim 2, characterized in that, The length of the bracket (32) is five to eight centimeters, and the number is no less than five.

4. The flow stabilizing channel of a high-pressure plunger pump according to claim 1, characterized in that, The flow stabilizing pipe (2) includes an inner arc flow guide shroud (21), the inner arc surface of which is distributed toward the arc-shaped metal cover (5).

5. The flow stabilizing channel of a high-pressure plunger pump according to claim 4, characterized in that, The straight-line distance between the hemispherical metal cover (4) and the first flange (1) does not exceed six centimeters.

6. The flow stabilizing channel of a high-pressure plunger pump according to claim 5, characterized in that, The port of the inner arc guide shroud (21) includes a cylindrical body (22), and at least two spiral protrusions (23) are fixedly provided on the inner wall of the cylindrical body (22).

7. The flow stabilizing channel of a high-pressure plunger pump according to claim 6, characterized in that, A guide pipe (6) is fixedly installed at the top of the inner arc guide shroud (21). One end of the guide pipe (6) extending into the inner arc guide shroud (21) is an inner tube body (61). The port of the inner tube body (61) is flush with the port of the inner arc guide shroud (21). The end of the guide pipe (6) extending to the outside of the inner arc guide shroud (21) is an outer flange pipe body (62).

8. The flow stabilizing channel of a high-pressure plunger pump according to claim 7, characterized in that, The inner tube body (61) is fixedly provided with an inner guide pipe (63) that is fixedly connected to the outer flange tube body (62), and a guide cavity is formed between the inner guide pipe (63) and the inner tube body (61). The inner guide tube (63) has a matrix of guide holes (631).

9. The flow stabilizing channel of a high-pressure plunger pump according to claim 8, characterized in that, The circumferential radius of the outer wall of the inner tube (61) is one-third or one-quarter of the circumferential radius of the arc-shaped metal cover (5).

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