CN114623301A - Pressure control device applied to pipeline system - Google Patents

Abstract

The present invention relates to the technical field of pipeline systems, in particular to a pressure control device applied to a pipeline system, comprising a first pipeline, a second pipeline and a pressure control structure, wherein the first pipeline is made of elastic material, so the The second pipeline is sleeved on the outside of the first pipeline, and forms an annular cavity with the first pipeline; the pressure control structure includes an elastic support structure located in the annular cavity and an elastic support structure located in the annular cavity. a power supply structure outside the annular cavity; the elastic support structure is made of piezoelectric material, and two ends of the elastic support structure are respectively connected with the first pipeline and the second pipeline; the power supply structure is provided with on the second pipeline and electrically connected with the elastic support structure. In the pressure control device applied to the pipeline system provided by the present invention, the elastic support structure can reduce the pressure pulsation of the first pipeline, prevent the structural resonance caused by the pressure pulsation from damaging the pipeline system, and at the same time reduce or eliminate noise.

Description

Pressure control devices for piping systems

technical field

The invention relates to the technical field of pipeline systems, in particular to a pressure control device applied to the pipeline system.

Background technique

Pipeline systems are generally used to transport fluids such as liquids and gases, and are used in many industries. For example, the pipeline system in the shipbuilding industry, including oil pipeline, steam pipeline and cooling water pipeline, etc. When the fluid is transported in the pipeline system, pressure pulsation is prone to occur. This pulsating pressure is usually harmful. In severe cases, it may cause structural resonance, destroy the pipeline system, and radiate strong noise.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the pulsating pressure may damage the pipeline system and at the same time radiate strong noise, so as to provide a pipeline application that can reduce the pulsating pressure. System pressure control device.

In order to solve the above problems, the present invention provides a pressure control device applied to a pipeline system, comprising a first pipeline, a second pipeline and a pressure control structure, the first pipeline is made of elastic material, the first pipeline The second pipeline is sleeved on the outside of the first pipeline, and forms an annular cavity with the first pipeline; the pressure control structure includes an elastic support structure located in the annular cavity and an elastic support structure located in the annular cavity an external power supply structure; the elastic support structure is made of piezoelectric material, and two ends of the elastic support structure are respectively connected with the first pipeline and the second pipeline; the power supply structure is arranged at the on the second pipeline and electrically connected with the elastic support structure.

In the pressure control device applied to a pipeline system provided by the present invention, the elastic support structure includes multiple groups of piezoelectric plates, and two ends of the piezoelectric plates are respectively connected to the first pipeline and the second pipeline , and multiple groups of the piezoelectric plates are distributed along the circumferential direction of the annular cavity.

In the pressure control device applied to the pipeline system provided by the present invention, a plurality of groups of the piezoelectric plates are evenly distributed along the circumferential direction of the annular cavity.

In the pressure control device applied to a pipeline system provided by the present invention, the piezoelectric plate is an arc-shaped plate, and two ends of the arc-shaped plate are respectively connected to the first pipeline and the second pipeline.

In the pressure control device applied to the pipeline system provided by the present invention, each group of the piezoelectric plates has two, the two ends of the two piezoelectric plates in each group are respectively connected, and the two piezoelectric plates in each group are respectively connected. The piezoelectric plates are bent in opposite directions.

In the pressure control device applied to the pipeline system provided by the present invention, both ends of the second pipeline are provided with connecting flanges, and the second pipeline is suitable for being detachable from the pipeline system through the connecting flanges ground connection.

In the pressure control device applied to a pipeline system provided by the present invention, the connecting flange includes a support end extending toward the inner circumference of the second pipeline, and the second pipeline communicates with the first pipeline through the support end. A pipeline encloses the annular cavity; the first pipeline includes a pipeline body and two connecting parts, the two connecting parts extend from the two ends of the pipeline body to the outer periphery of the pipeline body respectively extending out; the two supporting ends are located between the two connecting parts, and are respectively abutted with the two connecting parts.

In the pressure control device applied to the pipeline system provided by the present invention, a limit groove is provided on the end surface of the support end facing away from the annular cavity, the connecting portion is arranged in the limit groove, and the connecting portion The thickness is greater than or equal to the groove depth of the limiting groove in the axial direction of the second pipeline.

In the pressure control device applied to the pipeline system provided by the present invention, the connecting flange further includes a connecting end extending toward the outer circumference of the second pipeline, and a plurality of connecting holes are provided on the connecting end. The ends are connected to the piping system by fasteners and the connecting holes.

In the pressure control device applied to the pipeline system provided by the present invention, the power supply structure is a power supply structure capable of outputting a constant voltage, and the power supply structure is electrically connected with the elastic support structure through connecting wires.

The present invention has the following advantages:

1. The pressure control device applied to the pipeline system provided by the present invention includes a first pipeline, a second pipeline and a pressure control structure, the first pipeline is made of elastic material, and the second pipeline is sleeved. outside the first pipeline and forming an annular cavity with the first pipeline; the pressure control structure includes an elastic support structure located in the annular cavity and a power supply structure located outside the annular cavity; The elastic support structure is made of piezoelectric material, and two ends of the elastic support structure are respectively connected with the first pipeline and the second pipeline; the power supply structure is arranged on the second pipeline , and is electrically connected with the elastic support structure.

According to the deviation between the actual pressure of the fluid in the first pipeline and the target pressure, the power supply structure inputs the corresponding voltage to the elastic support structure, adjusts the support stiffness of the elastic support structure between the first pipeline and the second pipeline, and reduces the pressure pulsation, preventing structural resonances caused by pressure pulsations from disrupting the piping system, while also reducing or eliminating noise. Since the piezoelectric material can change its rigidity with the change of the input voltage, the pressure control device applied to the pipeline system provided by the present invention can be applied to various fluids and working conditions with various fluid pressures, and has a wide range of applications.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 shows the sectional view of the pressure control device applied to the pipeline system of the present invention;

Figure 2 shows an axial view of the pressure control device of the present invention applied to a piping system.

Description of reference numbers:

1. The first pipeline; 11. The pipeline body; 12. The connecting part; 2. The second pipeline; 3. The annular cavity; 4. The pressure control structure; 41. The elastic support structure; Flange; 51, supporting end; 52, connecting end; 53, connecting hole.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in FIG. 1 and FIG. 2 , this embodiment provides a pressure control device applied to a pipeline system, including a first pipeline 1 , a second pipeline 2 and a pressure control structure 4 , the first pipeline The pipeline 1 is made of elastic material, the second pipeline 2 is sleeved on the outside of the first pipeline 1, and forms an annular cavity 3 with the first pipeline 1; the pressure control structure 4 includes The elastic support structure 41 located in the annular cavity 3 and the power supply structure 42 located outside the annular cavity 3; the elastic support structure 41 is made of piezoelectric material, and the two ends of the elastic support structure 41 are respectively connected to The first pipeline 1 and the second pipeline 2 are connected; the power supply structure 42 is arranged on the second pipeline 2 and is electrically connected to the elastic support structure 41 .

According to the deviation between the actual pressure of the fluid in the first pipeline 1 and the target pressure, the power supply structure 42 inputs a corresponding voltage to the elastic support structure 41 to adjust the voltage of the elastic support structure 41 between the first pipeline 1 and the second pipeline 2 Support stiffness, reduce pressure pulsation, prevent structural resonance caused by pressure pulsation from damaging the piping system, and also reduce or eliminate noise. Since the piezoelectric material can change its own stiffness with the change of the input voltage, the pressure control structure 4 provided by the present invention can be applied to various fluids and working conditions with various fluid pressures, and has a wide range of applications. When the fluid pressure in the first pipeline 1 is relatively high, the power supply structure 42 inputs a corresponding voltage to the elastic support structure 41, the supporting rigidity of the elastic support structure 41 decreases, and the diameter of the first pipeline 1 increases accordingly to release the first pipeline 1. Fluid pressure in line 1. When the fluid pressure in the first pipeline 1 is small, the power supply structure 42 inputs a corresponding voltage to the elastic support structure 41, the supporting rigidity of the elastic support structure 41 is enhanced, and the diameter of the first pipeline 1 decreases accordingly to increase the first Fluid pressure in line 1.

Part of the prior art is used in the pressure control device of the pipeline system. The first pipeline 1 and the second pipeline 2 are usually filled with rubber, and the elastic deformation of the rubber itself is used to attenuate the pulsation of the fluid in the first pipeline 1. pressure, but the rigidity of the rubber is fixed, resulting in a relatively limited attenuation effect of the rubber, which is only suitable for the pressure control device applied to the pipeline system with a certain pressure pulsation, and the rubber does not actively increase to reduce the first pipeline 1. The role of diameter, the scope of application is limited. In this embodiment, elastic support structures 41 are arranged in the first pipeline 1 and the second pipeline 2. Under the control of the power supply structure 42, the elastic support structure 41 has adjustable rigidity, which can be applied to different degrees of pressure pulsation. It has a wide range; and can provide different degrees of support stiffness according to the pressure pulsation in the first pipeline 1 to increase or decrease the diameter of the first pipeline 1 .

In this embodiment, the elastic support structure 41 includes multiple groups of piezoelectric plates, two ends of the piezoelectric plates are respectively connected to the first pipeline 1 and the second pipeline 2, and multiple sets of the piezoelectric plates are connected to the first pipeline 1 and the second pipeline 2 respectively. Piezoelectric plates are distributed along the circumferential direction of the annular cavity 3 .

Each group of piezoelectric plates is electrically connected to the power supply structure 42. After the voltage input from the power supply structure 42 is obtained, the piezoelectric plates can undergo elastic deformation to change the support size of the piezoelectric plates to the first pipeline 1, thereby changing the first pipeline 1. The diameter of the pipeline 1 is to attenuate pressure pulsation, to protect the pressure control device applied to the pipeline system from damage, and to reduce or eliminate noise. In addition, multiple groups of piezoelectric plates are distributed along the circumferential direction of the annular cavity 3, which can support the first pipeline 1 at multiple positions in the circumferential direction of the first pipeline 1 to prevent the first pipeline 1 from being locally deformed for a long time. damage, and can be dispersed at multiple points to attenuate the pressure pulsation, and the attenuation effect is good.

In a specific embodiment, the piezoelectric plate is a thin plate with a thin thickness and is easily deformed, and has a simple structure and is convenient for mass production. And the longitudinal direction of the piezoelectric plate is consistent with the axial direction of the annular cavity 3 .

As an alternative embodiment, the elastic support structure 41 may also include multiple groups of piezoelectric springs, and the multiple groups of piezoelectric springs are distributed along the circumferential direction of the annular cavity 3 . Each group of piezoelectric springs has at least two piezoelectric springs, and the at least two piezoelectric springs are distributed along the axial direction of the annular cavity 3 .

In this embodiment, multiple groups of the piezoelectric plates are evenly distributed along the circumferential direction of the annular cavity 3 . The piezoelectric plate obtains the same voltage input through the power supply structure 42 , which can evenly provide support along the circumferential direction of the first pipeline 1 to prevent damage to the first pipeline 1 when the local supporting force is large. The multiple groups of the piezoelectric plates are evenly distributed along the circumferential direction of the annular cavity 3 , which can not only make the diameter of the first pipeline 1 change evenly, but also increase the support stiffness between the second pipeline 2 and the first pipeline 1 adjustment range.

In this embodiment, the piezoelectric plate is an arc-shaped plate, and two ends of the arc-shaped plate are respectively connected to the first pipeline 1 and the second pipeline 2 . The arc-shaped plate can be stretched according to the voltage input by the power supply structure 42 to reduce the diameter of the first pipeline 1 , and can also be bent according to the voltage input by the power supply structure 42 to increase the diameter of the first pipeline 1 .

In this embodiment, there are two piezoelectric plates in each group, two ends of the two piezoelectric plates in each group are respectively connected, and the two piezoelectric plates in each group are bent in opposite directions.

Because the piezoelectric plate is an arc-shaped plate, and the connection between the arc-shaped plate and the first pipeline 1 and the second pipeline 2 has an included angle, the force applied by one end of the arc-shaped plate to the first pipeline 1 can be decomposed into The radial force in the radial direction of the first pipeline 1 and the circumferential force along the circumferential direction of the first pipeline 1; the force exerted by the other end of the arc-shaped plate on the second pipeline 2 can be decomposed into the radial force along the second pipeline 2 The radial force in the direction of the second pipeline 2 and the circumferential force along the circumferential direction of the second pipeline 2; the circumferential force has a beneficial effect on the diameter change of the first pipeline 1, and the radial force has a harmful effect, and the radial force may Damage to the first line 1 and the second line 2. In this embodiment, both ends of the two piezoelectric plates in each group are respectively connected, and the two piezoelectric plates in each group are bent in opposite directions. The radial forces exerted by the second pipeline 2 cancel each other, and will not cause damage to the first pipeline 1 and the second pipeline 2 .

In a preferred embodiment, the elastic support structure 41 includes eight groups of piezoelectric plates, each group has two piezoelectric plates, the piezoelectric plates are arc-shaped plates, and the bending directions of the two piezoelectric plates in each group are opposite.

In this embodiment, both ends of the second pipeline 2 are provided with connecting flanges 5 , and the second pipeline 2 is adapted to be detachably connected to the pipeline system through the connecting flanges 5 . The pressure control device applied to the pipeline system is detachably connected to a number of occasions where the pressure control device applied to the pipeline system needs to be used to transport fluids through the connecting flange 5, such as in the marine industry, connecting with lubricating oil pipelines, and steam. Pipeline connection or connection with cooling water pipeline, etc. Since the pressure control device applied to the pipeline system is provided with the connecting flange 5, it is easy to disassemble and install, and the output voltage of the power supply structure 42 can be adjusted according to the pressure pulsation in the corresponding pipeline, so that the elastic support structure 41 has different characteristics. Support stiffness. Specifically, the pipeline system may be a lubricating oil pipeline with a fluid input port and a fluid output port, a lubricating oil device, a steam pipeline, a steam device, a cooling water pipeline or a cooling device, and the like. The pressure control device applied to the pipeline system is connected with the flange of the pipeline system through the connecting flange 5 .

In this embodiment, the connection flange 5 includes a support end 51 extending toward the inner circumference of the second pipeline 2 , and the second pipeline 2 communicates with the first pipeline 1 through the support end 51 . The annular cavity 3 is enclosed; the first pipeline 1 includes a pipeline body 11 and two connecting parts 12, and the two connecting parts 12 extend from the two ends of the pipeline body 11 to the pipeline respectively. The outer periphery of the main body 11 extends out; the two supporting ends 51 are located between the two connecting portions 12 and abut with the two connecting portions 12 respectively. The support end 51 of the second pipeline 2 has a certain rigidity, and can support the annular cavity 3 between the first pipeline 1 and the second pipeline 2 . The first pipeline 1 has elasticity, and the two connecting portions 12 and the two supporting ends 51 can be in an interference fit to ensure the connection effect between the first pipeline 1 and the second pipeline 2 . Moreover, the first pipeline 1 has two connecting parts 12 , the two connecting parts 12 overlap with the two supporting ends 51 in the radial direction, and abut each other in the axial direction, so that the first pipeline 1 and the second The annular cavity 3 formed between the pipelines 2 is a sealed cavity, preventing liquid or gas from leaking between the first pipeline 1 and the second pipeline 2 .

In an implementation of this embodiment, a limiting groove is provided on the end surface of the support end 51 facing away from the annular cavity 3 , the connecting portion 12 is disposed in the limiting groove, and the connecting portion 12 The thickness of is equal to the groove depth of the limiting groove in the axial direction of the second pipeline 2 . The connecting portion 12 will not protrude from the end face of the support end 51 facing away from the annular cavity 3, so as to prevent the connection flange 5 from being connected to the piping system due to a gap resulting in a loose connection, and the piping system and the limiting groove pressing the connecting portion 12 The sealing effect between the first pipeline 1 and the second pipeline 2 can also be further ensured.

In another implementation of this embodiment, a limiting groove is provided on the end surface of the support end 51 facing away from the annular cavity 3 , the connecting portion 12 is disposed in the limiting groove, and the connecting portion The thickness of 12 is greater than the groove depth of the limiting groove in the axial direction of the second pipeline 2 . The connecting part 12 has elasticity, the thickness of the connecting part is slightly larger than the groove depth in the axial direction of the second pipeline 2, the pipeline system and the limit groove press the connecting part 12 to ensure the connection between the flange 5 and the pipeline system Tightness of the connection to prevent fluid spillage.

In this embodiment, the connecting flange 5 further includes a connecting end 52 extending toward the outer circumference of the second pipeline 2 , the connecting end 52 is provided with a plurality of connecting holes 53 , and the connecting end 52 is tightened The fasteners and the connecting holes 53 are connected to the piping system. Fasteners include bolts, screws and other fastening connection structures.

In this embodiment, the power supply structure 42 is a power supply structure 42 capable of outputting a constant voltage, and the power supply structure 42 is electrically connected to the elastic support structure 41 through connecting wires. The power supply structure 42 can output a constant voltage to ensure that the elastic support structure 41 can have a stable support rigidity.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A pressure control device for use in a piping system, comprising:

a first conduit (1) made of an elastic material;

the second pipeline (2) is sleeved outside the first pipeline (1) and surrounds the first pipeline (1) to form an annular cavity (3);

a pressure control structure (4) comprising an elastic support structure (41) located inside the annular chamber (3) and a power supply structure (42) located outside the annular chamber (3); the elastic supporting structure (41) is made of piezoelectric materials, and two ends of the elastic supporting structure (41) are respectively connected with the first pipeline (1) and the second pipeline (2); the power supply structure (42) is arranged on the second pipeline (2) and is electrically connected with the elastic support structure (41).

2. Pressure control device applied to a piping system according to claim 1, characterized in that said elastic support structure (41) comprises a plurality of groups of piezoelectric plates, both ends of which are connected to said first (1) and second (2) pipes, respectively, and said plurality of groups of piezoelectric plates are distributed along the circumference of said annular chamber (3).

3. Pressure control device applied to pipe systems according to claim 2, characterized in that the groups of piezoelectric plates are evenly distributed along the circumference of the annular chamber (3).

4. The pressure control device applied to the pipeline system according to claim 2 or 3, wherein the piezoelectric plate is an arc-shaped plate, and both ends of the arc-shaped plate are respectively connected with the first pipeline (1) and the second pipeline (2).

5. The pressure control apparatus for piping system according to claim 4, wherein there are two piezoelectric plates in each group, both ends of two piezoelectric plates in each group are connected, respectively, and the two piezoelectric plates in each group are bent in opposite directions.

6. Pressure control device for pipe systems according to any of claims 1-3, 5, characterized in that the second pipe (2) is provided with a connecting flange (5) at both ends, the second pipe (2) being adapted to be detachably connected to a pipe system via the connecting flange (5).

7. The pressure control device applied to a pipeline system according to claim 6, wherein the connecting flange (5) comprises a support end (51) extending towards the inner periphery of the second pipeline (2), and the second pipeline (2) and the first pipeline (1) enclose the annular cavity (3) through the support end (51);

the first pipeline (1) comprises a pipeline body (11) and two connecting parts (12), wherein the two connecting parts (12) respectively extend from two ends of the pipeline body (11) to the periphery of the pipeline body (11); the two support ends (51) are positioned between the two connecting parts (12) and are respectively abutted against the two connecting parts (12).

8. The pressure control device applied to the pipeline system according to claim 7, wherein a limiting groove is arranged on the end surface of the supporting end (51) facing away from the annular cavity (3), the connecting part (12) is arranged in the limiting groove, and the thickness of the connecting part (12) is greater than or equal to the groove depth of the limiting groove in the axial direction of the second pipeline (2).

9. The pressure control apparatus applied to a piping system according to claim 6, wherein said connection flange (5) further comprises a connection end (52) extending to an outer periphery of said second piping (2), said connection end (52) being provided with a plurality of connection holes (53), said connection end (52) being connected to the piping system through a fastener and said connection holes (53).

10. Pressure control device for pipe systems according to any of claims 1-3, 5, 7-9, characterized in that the power supply structure (42) is a power supply structure (42) capable of outputting a constant voltage, and the power supply structure (42) is electrically connected with the elastic support structure (41) through a connecting wire.

Images