Ship high-pressure pipeline system pump source operation condition installation attitude low-noise compensation structure

Abstract

The invention relates to the field of ship vibration noise control, in particular to a ship high-pressure pipeline system pump source operation condition installation posture low-noise compensation structure which comprises a pump set, a balance flexible connecting pipe is fixedly connected to an inlet and outlet pipeline of the pump set, and a vibration reduction platform is arranged on the pump set. The vibration reduction platform is provided with a vertical adjusting assembly relative to the pump set, and the vertical adjusting assembly limits the pump set to be in a vertical state. The method has the effects that the low-noise operation posture of the pump set is guaranteed, the operation inclination displacement of the pump set is reduced, the vibration noise of the pump set in the operation state is reduced, and the ship mechanical noise is reduced.

Description

Technical Field

[0001] The present application relates to the field of ship vibration noise control, and in particular to a low-noise compensation structure for the installation posture of a pump source operating condition of a ship high-pressure pipeline system. Background Art

[0002] Mechanical system noise is the main noise source in low-speed ship conditions. The noise source shows obvious low-frequency line spectrum characteristics and is one of the key points of ship vibration and noise reduction design. Pump equipment is one of the most widely used and common mechanical equipment in ships. Therefore, low-noise and vibration reduction design for pump equipment and related piping systems is the key to ship mechanical noise control.

[0003] Vibration isolation design is an important means of mechanical noise control. In order to control the ship vibration noise induced by pump equipment, a large number of vibration isolation designs are adopted in current ship models, including single-layer vibration isolation, double-layer vibration isolation, raft vibration isolation, etc. The vibration transmission of the pump group is effectively suppressed, and the vibration and sound radiation energy induced by the mechanical vibration of the pump group is continuously reduced. However, due to the asymmetry and unevenness of pump equipment and the coupling characteristics of the pump source and the pipeline system, it is difficult for traditional vibration isolation design to solve the problem of worsening vibration of the pump source and the pipeline system, mainly because of the additional weight of the pipeline, the pipeline will also add force to the pump group, and the uneven vibration isolator of the pump unit will cause the installation posture of the pump source to tilt, resulting in worsening of the vibration noise of the pump group and affecting the vibration noise control of the system.

[0004] When working in a high-pressure environment, the coupling vibration and noise of the pump unit and the pipeline system deteriorate more significantly. The main reason is that under high-pressure working conditions of the pipeline medium, due to the asymmetric design of the inlet and outlet of the pump unit fluid medium, the pump unit is subjected to a strong force from the high-pressure medium inside the pipeline and the force generated by the deformation of the pipeline. This force acts on the elastically mounted pump unit, which will cause the posture of the pump unit to tilt significantly. The operating condition of the pump unit is no longer completely upright. At this time, strong contact stress will be generated between the rotor shaft and the bearing of the pump unit's motor and pump head, which will cause the vibration and noise of the pump unit to deteriorate significantly. In addition, due to the uneven force state of the side-mounted vibration isolator and other differences, some side-mounted vibration-isolating pump units will also cause the operating posture of the pump unit to tilt, resulting in the deterioration of the vibration and noise of the pump unit in operation, which cannot meet the low-noise design and operation requirements of ships. Summary of the invention

[0005] In order to ensure the low-noise operating posture of the pump group, reduce the tilt displacement of the pump group during operation, reduce the vibration noise of the pump group during operation, and reduce the mechanical noise of the ship, the present application provides a low-noise compensation structure for the installation posture of the pump source operating condition of a ship's high-pressure pipeline system.

[0006] The present application provides a low-noise compensation structure for the pump source operating condition installation posture of a ship high-pressure pipeline system, which adopts the following technical solutions:

[0007] A low-noise compensation structure for the operating condition installation posture of a pump source of a ship's high-pressure pipeline system includes a pump group, a balancing flexible pipe is fixedly connected to the inlet and outlet pipelines of the pump group, a vibration reduction platform is arranged on the pump group, a vertical adjustment component is arranged on the vibration reduction platform relative to the pump group, and the vertical adjustment component limits the pump group to a vertical state.

[0008] Optionally, the vertical adjustment component includes a vertically arranged base, and a plurality of the bases are arranged on the vibration damping platform. The bases are respectively located in a first direction and a second direction of the pump group, and the first direction and the second direction are horizontal and vertical. A telescopic adjustment component is arranged between the base and the pump group, and one end of the telescopic adjustment component is connected to the base, and the other end of the telescopic adjustment component is connected to the pump group.

[0009] Optionally, a first vibration isolator is fixedly connected to the base relative to the telescopic adjustment component, and the first vibration isolator is connected to the telescopic adjustment component.

[0010] Optionally, the telescopic adjustment component includes a first threaded rod, an end of the first threaded rod is fixedly connected to the first vibration isolator, a second threaded rod is arranged on the side of the first threaded rod close to the pump group, the first threaded rod and the second threaded rod are coaxially arranged, a threaded sleeve is arranged between the first threaded rod and the second threaded rod, the threaded sleeve is threadedly connected to the first threaded rod, the threaded sleeve is threadedly connected to the second threaded rod, and a spacing is left between the first threaded rod and the second threaded rod.

[0011] Optionally, the pump assembly is fixedly connected to a tie rod base relative to the second threaded rod, and the tie rod base is connected to the second threaded rod.

[0012] Optionally, the pull rod base includes a shell, a pull hole is opened inside the shell, the pull hole includes a connecting part connected to the outside, the connecting part is provided with an accommodating part on the side close to the pump group, the end of the second threaded rod is fixedly connected with a clamping plate, the clamping plate is located in the accommodating part, and the vertical cross-sectional area of ​​the clamping plate is larger than the opening of the connecting part.

[0013] Optionally, the telescopic adjustment components are arranged in multiple groups in the first direction, and the telescopic adjustment components are arranged in multiple groups in the second direction.

[0014] Optionally, a through hole is provided on the vibration damping platform, the pump group passes through the through hole, a second vibration isolator is fixedly connected to the side wall of the pump group, the second vibration isolator is fixedly connected to the vibration damping platform, and the vibration damping platform is spaced apart from the pump group.

[0015] Optionally, the actual load borne by the second vibration isolator is not less than 80% of the rated load of the second vibration isolator.

[0016] Optionally, a plurality of the second vibration isolators are provided, the sum of the dynamic stiffnesses of the plurality of the second vibration isolators is k1, and the radial dynamic stiffness of the balancing flexible pipe is not greater than 1 / 10 of the sum of the dynamic stiffnesses k1 of the plurality of the second vibration isolators.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. By configuring a vertical adjustment component with a vibration isolator at the bottom of the high-pressure pipe system pump source, the operating posture of the pump source in the high-pressure pipe system can be adjusted, solving the problem of poor acoustic performance caused by the vibration noise deterioration caused by the internal stress of the pipeline medium and the skewed operating posture of the existing pump group. It can guide the vibration isolation design and low-noise installation of ship pump equipment, and provide support for the acoustic scheme design of ship mechanical systems and the preparation of related installation documents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall state of a low-noise compensation structure for the pump source operating condition installation posture of a ship high-pressure pipeline system in an embodiment of the present application.

[0020] Figure 2 It is a top view of a low-noise compensation structure with a pump source of a ship's high-pressure pipeline system in an embodiment of the present application installed in an operating condition with a vibration reduction platform removed.

[0021] Explanation of the reference numerals: 1. Vibration reduction platform; 2. Second vibration isolator; 3. Pump group; 4. Vertical adjustment assembly; 41. Base; 42. First vibration isolator; 43. Telescopic adjustment component; 431. First threaded rod; 432. Second threaded rod; 433. Threaded sleeve; 44. Pull rod base. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0024] The following is combined with Figure 1-2 This application is described in further detail.

[0025] The embodiment of the present application discloses a low noise compensation structure for the pump source operation condition installation posture of a ship high pressure pipeline system. Figure 1 A low-noise compensation structure for the operation condition installation posture of a pump source of a ship's high-pressure pipeline system includes a horizontally arranged vibration reduction platform 1, a pump group 3 is vertically arranged on the vibration reduction platform 1, a through hole is opened at a position of the vibration reduction platform 1 relative to the pump group 3, the through hole completely penetrates the side wall of the vibration reduction platform 1, and the pump group 3 passes through the inside of the through hole, and a gap is left between the side wall of the vibration reduction platform 1 relative to the through hole and the side wall of the pump group 3 to reduce the contact between the pump group 3 and the vibration reduction platform 1.

[0026] A second vibration isolator 2 is fixedly connected to the side wall of the pump group 3, and the bottom end of the second vibration isolator 2 is fixedly connected to the side wall of the vibration reduction platform 1. The pump group 3 is relatively connected to the vibration reduction platform 1 through the second vibration isolator.

[0027] The pump group 3 of the high-pressure pipeline system is usually subject to three forces. The first is the gravity of the pump group 3, which is the wet weight G1 of the liquid inside the pump group 3; the second is the static pressure of the fluid medium inside the pipeline on the pump group 3, which is perpendicular to the inlet and outlet directions of the pump, and is F 1进 、F 1出 ; Third, the internal stress of the pipeline is generated by the high pressure or high temperature pipeline acting on the pipeline elbow and other structural parts. The internal stress is perpendicular to the inlet and outlet direction of the pump F 2进 、F 2出 ; Calculate and analyze the wet weight G1 of pump group 3 and the force F along the pump inlet 进 , the force F along the pump outlet 出 .

[0028] According to the wet weight G1 of the pump group 3 and the number of installation interfaces of the pump group 3 machine foot, combined with the installation frequency requirements of the pump group 3, the selection of the second vibration isolator 2 of the pump group 3 machine foot is completed. The actual load borne by the second vibration isolator 2 of the pump group 3 machine foot should not be less than 80% of the rated load of the second vibration isolator 2;

[0029] A balanced flexible pipe is fixedly connected to the pipeline at the inlet and outlet of the pump group 3. The radial dynamic stiffness of the balanced flexible pipe should not be greater than 1 / 10 of the sum k1 of all dynamic stiffnesses of the second vibration isolator 2 of the machine foot of the pump group 3; at the same time, the maximum deformation of the balanced flexible pipe should meet the deformation safety requirements of the pipeline system;

[0030] The force Fin along the inlet pipeline and the force Fout along the pump outlet on the pump body are decomposed into two orthogonal directions x and y of the pump body, which are F x and F y For a pump with vertical inlet and outlet, x and y can be the inlet and outlet directions of the pump; for a pump with non-vertical inlet and outlet directions, the x and y directions can be determined according to the geometric shape of the pump and the installation space;

[0031] According to the force F exerted on the pump unit 3 by the pipeline x and F y Vertical adjustment components 4 are respectively designed in the x and y directions. The vertical adjustment components 4 adjust the vertical direction of the pump group 3 so that the pump group 3 can always maintain a vertical state.

[0032] The vertical adjustment component 4 includes a vertically arranged base 41, which is located at the bottom end of the vibration reduction platform 1 and is fixedly connected to the vibration reduction platform 1. The base 41 is arranged along a first direction and a second direction of the vibration reduction platform 1 relative to the pump group 3. The first direction is parallel to the above-mentioned X direction, and the second direction is parallel to the above-mentioned Y direction. The first direction and the second direction are arranged vertically.

[0033] A first vibration isolator 42 is fixedly connected to one side of the base 41 close to the pump group 3, and the first vibration isolator 42 is arranged horizontally. In some embodiments, the first vibration isolator 42 is a rubber vibration damper with a limiting structure, and the vibration damper is preferably a low-rigidity vibration damper as much as possible;

[0034] A telescopic adjustment component 43 is also provided between the base 41 and the pump group 3, one end of the telescopic adjustment component 43 abuts against the base 41, and the other end of the telescopic adjustment component 43 abuts against the pump group 3. The length of the telescopic adjustment component 43 can be adjusted as needed, thereby adjusting the position of the pump group 3 in the x and y directions, so that the pump group 3 always remains in a vertical state.

[0035] The telescopic adjustment component 43 includes a first threaded rod 431 arranged horizontally, one end of the first threaded rod 431 is fixedly connected to the first vibration isolator 42, and the other end of the first threaded rod 431 is coaxially provided with a second threaded rod 432, a spacing is left between the second threaded rod 432 and the first threaded rod 431, and a threaded sleeve 433 is arranged between the first threaded rod 431 and the second threaded rod 432, the threaded sleeve 433 is sleeved on the outside of the first threaded rod 431 and the second threaded rod 432, and one end of the threaded rod is threadedly connected to the first threaded rod 431, and the other end of the threaded rod is threadedly connected to the second threaded rod 432. By rotating the threaded sleeve 433, the threaded sleeve 433 drives the first threaded rod 431 and the second threaded rod 432 to move in a direction of relative proximity or relative separation, thereby adjusting the length of the overall telescopic adjustment component 43.

[0036] A tie rod base 44 is provided on one side of the second threaded rod 432 close to the pump unit 3, and the tie rod base 44 is fixedly connected to the pump unit 3. The tie rod base 44 includes a shell, a pull hole is provided inside the shell, and the pull hole includes a receiving portion inside the tie rod base 44. A connecting portion is provided on one side of the receiving portion close to the second threaded rod 432 of the receiving portion, the connecting portion is relatively connected to the receiving portion, and the other end of the connecting portion is relatively connected to the outside, and the opening area of ​​the connecting portion is smaller than the opening area of ​​the receiving portion.

[0037] The end of the second threaded rod 432 extends from the connecting portion into the interior of the accommodating portion, and the second threaded rod 432 is fixedly connected with a clamping plate at the position of the accommodating portion. The diameter of the clamping plate is larger than the diameter of the connecting portion, so that the clamping plate is clamped inside the connecting portion to relatively connect the second threaded rod 432 and the pull rod base 44.

[0038] In some embodiments, multiple groups of telescopic adjustment components 43 are arranged in the first direction, and multiple groups of telescopic adjustment components 43 are arranged in the second direction.

[0039] First, complete the installation of the pump group 3 and the second vibration isolator 2 of the pump group 3 machine foot on the vibration reduction platform 1;

[0040] After the pump group 3 is installed and left to stand for 48 hours, and the second vibration isolator 2 of the pump group 3 foot is fully deformed, the piping system can be installed;

[0041] Install the pipeline and pipeline feet. After the pipeline installation is completed and the feet are left to stand for 48 hours, the pipeline centerline and the pump inlet and outlet centerlines are basically aligned. Then install the inlet and outlet balancing flexible pipes of pump group 3.

[0042] Complete the installation of the inlet and outlet flanges of pump group 3 and the balanced flexible pipe of the system pipeline. When installing the balanced flexible pipe, the balanced flexible pipe should be in a natural state without stress;

[0043] The installation of the telescopic adjustment component 43 of the first vibration isolator 42 with low rigidity is completed. According to the height position of the pump group 3, the installation hole of the first vibration isolator 42 of the telescopic adjustment component 43 is located on site and the installation hole is processed; then the installation of the first vibration isolator 42 and the telescopic adjustment component 43 of the telescopic adjustment component 43 is completed, and the external threaded sleeve 433 is adjusted, and the distance between the first threaded rod 431 and the second threaded rod 432 is adjusted to make the pump source in a vertical state;

[0044] Complete the operation status debugging of the telescopic adjustment component 43 with low-rigidity vibration isolator, let the pump group 3 operate according to the temperature, pressure and flow parameters of the design conditions, adjust the external threaded sleeve 433 according to the operation status of the pump group 3, so that the pump source is in a vertical state, and continue to run for 48 hours. After the vibration isolator at the telescopic adjustment component 43 is fully deformed, the pump source is still in a vertical state, and the installation and debugging is completed.

[0045] In this application, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A low-noise compensation structure for the pump source operating condition of a ship's high-pressure pipeline system, characterized in that: The invention comprises a pump group (3), wherein a balancing flexible pipe is fixedly connected to the inlet and outlet pipes of the pump group (3), a vibration reduction platform (1) is arranged on the pump group (3), a vertical adjustment component (4) is arranged on the vibration reduction platform (1) relative to the pump group (3), and the vertical adjustment component (4) limits the pump group (3) to be in a vertical state.

2. According to claim 1, the low-noise compensation structure for the pump source operating condition installation posture of the ship high-pressure pipeline system is characterized by: The vertical adjustment assembly (4) comprises a vertically arranged base (41), wherein a plurality of the bases (41) are arranged on the vibration reduction platform (1), and wherein the bases (41) are respectively arranged in a first direction and a second direction of the pump group (3), wherein the first direction and the second direction are horizontally and vertically arranged, and a telescopic adjustment component (43) is arranged between the base (41) and the pump group (3), wherein one end of the telescopic adjustment component (43) is connected to the base (41), and the other end of the telescopic adjustment component (43) is connected to the pump group (3).

3. According to claim 2, the low-noise compensation structure for the pump source operating condition installation posture of the ship high-pressure pipeline system is characterized by: The base (41) is fixedly connected with a first vibration isolator (42) relative to the telescopic adjustment component (43); the first vibration isolator (42) is connected to the telescopic adjustment component (43).

4. According to claim 3, the low noise compensation structure for the pump source operating condition installation posture of the ship high pressure pipeline system is characterized by: The telescopic adjustment component (43) includes a first threaded rod (431), the end of the first threaded rod (431) is fixedly connected to the first vibration isolator (42), a second threaded rod (432) is arranged on the side of the first threaded rod (431) close to the pump group (3), the first threaded rod (431) and the second threaded rod (432) are coaxially arranged, a threaded sleeve (433) is arranged between the first threaded rod (431) and the second threaded rod (432), the threaded sleeve (433) is threadedly connected to the first threaded rod (431), the threaded sleeve (433) is threadedly connected to the second threaded rod (432), and a spacing is left between the first threaded rod (431) and the second threaded rod (432).

5. According to claim 4, the low noise compensation structure for the pump source operating condition installation posture of the ship high pressure pipeline system is characterized by: The pump group (3) is fixedly connected to a tie rod base (44) relative to the second threaded rod (432), and the tie rod base (44) is connected to the second threaded rod (432).

6. According to claim 5, the low-noise compensation structure for the pump source operating condition installation posture of the ship high-pressure pipeline system is characterized by: The pull rod base (44) includes a shell, a pull hole is opened inside the shell, and the pull hole includes a connecting part connected to the outside, and a receiving part is provided on the side of the connecting part close to the pump group (3), and the end of the second threaded rod (432) is fixedly connected with a clamping plate, and the clamping plate is located in the receiving part, and the vertical cross-sectional area of ​​the clamping plate is larger than the opening of the connecting part.

7. According to claim 3, the low noise compensation structure for the pump source operating condition installation posture of the ship high pressure pipeline system is characterized by: The telescopic adjustment components (43) are arranged in a plurality of groups in the first direction, and the telescopic adjustment components (43) are arranged in a plurality of groups in the second direction.

8. According to claim 1, the low noise compensation structure for the pump source operating condition installation posture of the ship high pressure pipeline system is characterized by: The vibration reduction platform (1) is provided with a through hole, the pump group (3) passes through the through hole, a second vibration isolator (2) is fixedly connected to the side wall of the pump group (3), the second vibration isolator (2) is fixedly connected to the vibration reduction platform (1), and the vibration reduction platform (1) is spaced apart from the pump group (3).

9. The low noise compensation structure for the pump source operating condition installation posture of the ship high pressure pipeline system according to claim 8 is characterized by: The actual load borne by the second vibration isolator (2) is not less than 80% of the rated load of the second vibration isolator (2).

10. The low noise compensation structure for the pump source operating condition installation posture of a ship high pressure pipeline system according to claim 8, characterized in that: A plurality of the second vibration isolators (2) are provided, the sum of the dynamic stiffness of the plurality of the second vibration isolators (2) is k1, and the radial dynamic stiffness of the balancing flexible pipe is not greater than 1 / 10 of the sum k1 of the dynamic stiffness of the plurality of the second vibration isolators (2).

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