Shock absorption damping system capable of adjusting damping on line

Abstract

The utility model relates to the technical field of shock absorption equipment, and particularly discloses a shock absorption damping system capable of adjusting damping on line. Comprising a supporting and hanging frame located at the bottom of a pipeline, a viscous damping damper connected with the supporting and hanging frame and used for controlling the supporting and hanging frame to stretch out and draw back, a monitoring assembly installed on the pipeline and used for monitoring the vibration condition of the pipeline, and a control unit connected with the monitoring assembly and the viscous damping damper. And the liquid storage system is respectively connected with the viscous shock-absorbing damper and the control unit. On-line adjustment can be effectively achieved, the actual vibration condition of the pipeline is monitored in real time, damping of the pipeline damper is adjusted on line through the control pump according to the actual vibration condition of the pipeline, and pipeline vibration is reduced; according to the utility model, the damping medium in the piston cylinder is adjusted, so that the expansion amount of the support hanger is effectively set; and when the support hanger is used under different vibration conditions, the support hanger can be prevented from being replaced, and the support hanger does not need to be replaced by shutdown.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping equipment technology, and more specifically, to a vibration damping system with online adjustable damping. Background Technology

[0002] In existing technologies, after long-term operation of power plants, due to equipment aging and other reasons, there are external vibration sources that cannot be eliminated, causing abnormal vibration of high-temperature pipelines; usually, dampers are installed on the corresponding high-temperature steam pipelines to reduce the vibration.

[0003] However, the following problems exist during use: the damper cannot effectively suppress pipeline vibration, which may lead to an increase in vibration amplitude and affect system stability; continuous vibration or impact may damage pipelines and related equipment, such as supports, connectors, etc., increasing maintenance costs; increased vibration will bring more noise, affecting the working environment, and may even violate noise control regulations; excessive vibration may cause pipeline loosening or rupture, leading to safety accidents such as leakage or explosion. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a shock absorption damping system with online adjustable damping;

[0005] The solution adopted by this utility model to solve the technical problem is:

[0006] An online adjustable damping system for reducing vibration in pipelines includes a support at the bottom of the pipeline, a viscous damper connected to the support and used to control the extension and retraction of the support, a monitoring component installed on the pipeline for monitoring pipeline vibration, a control unit connected to the monitoring component and the viscous damper respectively, and a liquid storage system connected to the viscous damper and the control unit respectively.

[0007] In some possible implementations, the viscous damping device includes a piston cylinder containing a damping medium, located inside the piston cylinder with one end passing through a piston rod; the piston cylinder is connected to a liquid storage system.

[0008] In some possible implementations, the liquid storage system includes a first tank storing a damping medium, a second tank storing a damping medium, and a third tank storing a damping medium.

[0009] In some possible implementations, the viscosity of the damping medium is 100-300 cSt;

[0010] The viscosity of the second damping medium is 300-600 cSt;

[0011] The viscosity of the damping medium three is 600-1000 cSt.

[0012] In some possible implementations, a pipeline 1 is provided between the first storage tank and the piston cylinder, a pipeline 2 is provided between the second storage tank and the piston cylinder, and a pipeline 3 is provided between the third storage tank and the piston cylinder.

[0013] In some possible implementations, the first, second, and third pipelines have the same structure, including pipes and control pumps installed on the pipes; the control pumps are connected to a control unit.

[0014] The control pump 37 can be any one of a centrifugal pump, a diaphragm pump, or a reciprocating pump.

[0015] In some possible implementations, the monitoring component is a peak velocity meter.

[0016] An adjustment method for an online adjustable damping system according to the above-described method specifically includes the following steps:

[0017] Step S1: The monitoring component monitors the pipe vibration in real time, obtains the velocity value of the pipe vibration, and transmits the velocity value to the control unit;

[0018] Step S2: The control unit compares the speed value with the set threshold and adjusts the vibration force of the viscous damper.

[0019] In some possible implementations, the velocity value is the peak vibration velocity of the pipe.

[0020] In some possible implementations, the velocity value is Vmax, and the threshold is 12.6 mm / s;

[0021] When Vmax ≤ 12.6 mm / s, the damping medium in the piston cylinder is damping medium one; when Vmax > 12.6 mm / s, the damping medium in the piston cylinder is damping medium two.

[0022] When Vmax ≤ 12.6 mm / s, the damping medium in the piston cylinder is damping medium two; when Vmax > 12.6 mm / s, the damping medium in the piston cylinder is damping medium three.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This invention can effectively achieve online adjustment. By monitoring the actual vibration of the pipeline in real time, the pump is controlled to adjust the damping of the pipeline damper online according to the actual vibration of the pipeline, thereby reducing the pipeline vibration.

[0025] This invention adjusts the damping medium inside the piston cylinder, thereby effectively controlling the extension and retraction of the support bracket; when used under different vibration conditions, it avoids the need to replace the support bracket and eliminates the need to stop the machine to replace the support bracket. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the shock absorption and damping system in this utility model;

[0027] Among them: 10. Pipeline; 1. Support and hanger; 2. Viscous damper; 21. Piston cylinder; 3. Liquid storage system; 31. Storage tank one; 32. Storage tank two; 33. Storage tank three; 34. Pipeline one; 35. Pipeline two; 36. Pipeline three; 37. Control pump. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention will now be described in detail.

[0030] like Figure 1 As shown:

[0031] A vibration damping system with online adjustable damping is used to reduce vibration in high-temperature and high-pressure steam pipelines 10 in thermal power plants.

[0032] The vibration damping system includes a support 1 located at the bottom of the pipe 10, a viscous damper 2 connected to the support 1 and used to control the extension and retraction of the support 1, a monitoring component 4 installed on the pipe 10 for real-time monitoring of the vibration of the high-temperature and high-pressure steam pipe 10, a control unit connected to the monitoring component 4 and the viscous damper 2 respectively, and a liquid storage system 3 connected to the viscous damper 2 and the control unit respectively. The control unit compares the velocity value of the pipe 10 vibration monitored by the monitoring component 4 with the threshold set in the control unit. Based on the comparison result, it controls the supply of damping media of different viscosities to the viscous damper 2 through the liquid storage system 3 to adjust the damping of the viscous damper 2, thereby avoiding excessive force generated by the viscous damper 2 and reducing the vibration of the pipe 10.

[0033] In some possible implementations, the viscous damping device 2 includes a piston cylinder 21 containing a damping medium, a piston rod located inside the piston cylinder 21 with one end passing through it; the piston rod and the end passing through it are connected to a support; the piston cylinder 21 is connected to a liquid storage system 3, thereby enabling the supply of damping media of different viscosities to the piston cylinder 21.

[0034] The liquid storage system 3 stores a variety of damping media with different viscosities. When in use, the control unit can deliver damping media of different viscosities to the piston cylinder 21 according to the vibration of the pipeline 10, thereby causing the viscous damping damper 2 to generate different damping, avoiding excessive force generated by the viscous damping damper 2 and reducing the vibration of the pipeline 10.

[0035] In some possible implementations, in order to effectively store damping media of different viscosities through the liquid storage system 3 so that the damping media of different viscosities can be delivered to the piston cylinder 21 according to the usage requirements, the liquid storage system 3 includes a storage tank 31 storing damping media one, a storage tank 32 storing damping media two, and a storage tank 33 storing damping media three.

[0036] In some possible implementations, the viscosity of the damping medium is 100-300 cSt;

[0037] The viscosity of the second damping medium is 300-600 cSt;

[0038] The viscosity of the damping medium three is 600-1000 cSt.

[0039] In some possible implementations, a first pipeline 34 is provided between the first storage tank 31 and the piston cylinder 21, a second pipeline 35 is provided between the second storage tank 32 and the piston cylinder 21, and a third pipeline 36 is provided between the third storage tank 33 and the piston cylinder 21.

[0040] In some possible implementations, the first pipeline 34, the second pipeline 35, and the third pipeline 36 have the same structure, including a pipe 10 and a control pump 37 installed on the pipe 10; the control pump 37 is connected to a control unit.

[0041] The storage tanks (storage tank 1 31, storage tank 2 32, and storage tank 3 33) are connected to the piston cylinder 21 through pipeline 1 34, pipeline 2 35, and pipeline 3 36 respectively, and the damping medium is transported through the control pump 37.

[0042] Furthermore, control valves are respectively installed on pipeline 34, pipeline 35, and pipeline 36. The control valves are connected to the control unit and are located between the control pump 37 and the piston cylinder 21.

[0043] During use, the control unit controls different control pumps 37 and control valves to open according to the vibration of the pipeline 10, thereby discharging the original damping medium in the piston cylinder 21. After the discharge is completed, the control valve and control pump 37 are connected to open another set of pumps 37 and control valves on the pipeline, and deliver another kind of damping medium to the piston cylinder 21, thereby adjusting the viscosity of the viscous damping fluid in the piston cylinder 21 and changing the damping of the viscous damping damper 2.

[0044] For example, when the piston cylinder 21 originally contained damping medium one, and it needs to be adjusted to damping medium two according to the vibration situation, the control unit first controls pump 37 one to open, so that damping medium one in the piston cylinder 21 is delivered to storage tank 31; then the control unit controls pump 37 one to close and controls pump 37 two to open, so that damping medium two in storage tank 32 is delivered to piston cylinder 21, thereby changing the damping of viscous damper 2 and changing the vibration of pipeline 10;

[0045] Furthermore, a liquid level sensor is installed inside the piston cylinder 21 to effectively monitor the liquid level of the damping medium inside the piston cylinder 21. The liquid level sensor is connected to the control unit.

[0046] Furthermore, there are two sets of liquid level sensors, which effectively ensures that the liquid level of the damping medium (damping medium one, damping medium two, or damping medium three) injected into the piston cylinder 21 meets the requirements, and also ensures that the viscous damping in the piston cylinder 21 can be completely discharged when the damping medium is replaced.

[0047] In some possible implementations, the monitoring component 4 is a peak velocity measuring instrument.

[0048] An adjustment method for an online adjustable damping system according to the above-described method specifically includes the following steps:

[0049] Step S1: The monitoring component 4 monitors the vibration of the pipe 10 in real time, obtains the velocity value of the pipe 10 during vibration, and transmits the velocity value to the control unit.

[0050] Step S2: The control unit compares the speed value with the set threshold and adjusts the vibration force of the viscous damper 2.

[0051] In some possible implementations, the velocity value is the peak vibration velocity of the pipe 10.

[0052] In some possible implementations, the velocity value is Vmax, and the threshold is 12.6 mm / s;

[0053] When Vmax ≤ 12.6 mm / s, the damping medium in piston cylinder 21 is damping medium one; when Vmax > 12.6 mm / s is detected, all damping medium one in piston cylinder 21 is extracted, and damping medium two is supplied to piston cylinder 21 until the level of damping medium two meets the requirements.

[0054] When Vmax ≤ 12.6 mm / s, the damping medium in piston cylinder 21 is damping medium two; when monitoring Vmax > 12.6 mm / s, all damping medium two in piston cylinder 21 is extracted, and damping medium three is supplied into piston cylinder 21 until the level of damping medium three meets the requirements.

[0055] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An online adjustable damping system for reducing vibration in pipelines; characterized in that, It includes a support at the bottom of the pipe, a viscous damper connected to the support and used to control the extension and retraction of the support, a monitoring component installed on the pipe for monitoring the pipe vibration, and a liquid storage system connected to the viscous damper and the control unit respectively.

2. The online adjustable damping damping system according to claim 1, characterized in that, Control units are connected to the monitoring components and the viscous damping devices, respectively.

3. The online adjustable damping damping system according to claim 2, characterized in that, The viscous damping device includes a piston cylinder containing a damping medium, and a piston rod passing through one end of the piston cylinder; the piston cylinder is connected to a liquid storage system.

4. The online adjustable damping damping system according to claim 3, characterized in that, The liquid storage system includes a first tank storing a damping medium, a second tank storing a damping medium, and a third tank storing a damping medium.

5. A shock absorption damping system with online adjustable damping according to claim 4, characterized in that, The viscosity of the damping medium is 100-300 cSt; The viscosity of the second damping medium is 300-600 cSt; The viscosity of the damping medium three is 600-1000 cSt.

6. A shock absorption damping system with online adjustable damping according to claim 4, characterized in that, Pipeline 1 is installed between storage tank 1 and piston cylinder, pipeline 2 is installed between storage tank 2 and piston cylinder, and pipeline 3 is installed between storage tank 3 and piston cylinder.

7. A shock absorption damping system with online adjustable damping according to claim 6, characterized in that, Pipeline 1, Pipeline 2, and Pipeline 3 have the same structure, including pipes and control pumps installed on the pipes; the control pumps are connected to the control unit.

8. A shock absorption damping system with online adjustable damping according to claim 6, characterized in that, Control valves are also installed in pipelines one, two and three respectively, and the control valves are located between the control pump and the piston cylinder.

9. A shock absorption damping system with online adjustable damping according to any one of claims 1-8, characterized in that, The monitoring component is a peak velocity measuring instrument.

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