Shock absorption damping system capable of adjusting damping on line and adjusting method

Abstract

The invention relates to the technical field of damping equipment, and particularly discloses a damping system capable of adjusting damping online and an adjusting method. 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. The invention further discloses an adjusting method. 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; 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] The present invention relates to the technical field of shock absorption equipment, and more specifically, to a shock absorption damping system with online damping adjustment and an adjustment method. Background Art

[0002] In the prior art, after long-term operation of power plants, due to equipment aging and other reasons, there are external vibration sources that cannot be eradicated, resulting in abnormal vibration of high-temperature pipelines; usually, attempts are made to slow down the vibration by installing dampers on the corresponding high-temperature steam pipelines.

[0003] However, in the process of use, there are the following problems: the damper cannot effectively suppress pipeline vibration, which may lead to an increase in the vibration amplitude and affect system stability; continuous vibration or impact may damage pipelines and related equipment, such as support hangers, connectors, etc., increasing maintenance costs; intensified vibration will generate more noise, affecting the working environment and even possibly violating noise control regulations; excessive vibration may cause pipeline loosening or rupture, resulting in safety accidents such as leakage or explosion. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a shock absorption damping system with online damping adjustment and an adjustment method.

[0005] The solution adopted by the present invention to solve the technical problem is as follows:

[0006] A shock absorption damping system with online damping adjustment for realizing the vibration reduction of pipelines; it includes a support hanger located at the bottom of the pipeline, a viscous shock absorption damper connected to the support hanger and used to control the telescopic movement of the support hanger, a monitoring component installed on the pipeline and used to monitor the vibration condition of the pipeline, a control unit respectively connected to the monitoring component and the viscous shock absorption damper, and a liquid storage system respectively connected to the viscous shock absorption damper and the control unit.

[0007] In some possible implementation manners, the viscous shock absorption damper includes a piston cylinder containing a damping medium, and one end of the piston located in the piston cylinder passes through a piston rod; the piston cylinder is connected to the liquid storage system.

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

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

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

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

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

[0013] In some possible embodiments, the first pipeline, the second pipeline and the third pipeline have the same structure, including a pipeline and a control pump installed on the pipeline; the control pump is connected to the control unit.

[0014] In some possible embodiments, the monitoring component is a peak velocity measuring instrument.

[0015] A method for adjusting an on-line adjustable damping shock damping system according to the above, specifically comprising the following steps:

[0016] Step S1: The monitoring component monitors the pipeline vibration condition in real time, obtains the velocity value when the pipeline vibrates, and transmits the velocity value to the control unit;

[0017] Step S2: The control unit compares the velocity value with the set threshold value and adjusts the vibration force of the viscous shock damper.

[0018] In some possible embodiments, the velocity value is the peak vibration velocity of the pipeline.

[0019] In some possible embodiments, the velocity value is Vmax, and the threshold value is 12.6 mm / s;

[0020] When Vmax ≤ 12.6 mm / s, the damping medium in the piston cylinder is the first damping medium; when Vmax > 12.6 mm / s, the damping medium in the piston cylinder is the second damping medium;

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

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The present invention can effectively achieve on-line adjustment. By real-time monitoring of the actual vibration condition of the pipeline, the control pump adjusts the damping of the pipeline damper on-line according to the actual vibration condition of the pipeline, reducing the pipeline vibration;

[0024] The present invention adjusts the damping medium in the piston cylinder, thereby effectively sleeving the expansion amount of the support hanger; when used under different vibration conditions, it is possible to avoid replacing the support hanger and does not require shutting down the machine to replace the support hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Structural schematic diagram of the shock absorption and damping system in the present invention;

[0026] Wherein: 10, pipeline; 1, support and hanger; 2, viscous shock absorption and damping device; 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. Specific implementation manner

[0027] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limit, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality" refers to two or more. For example, a plurality of positioning posts means two or more positioning posts. 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 circumstances.

[0028] The present invention will be described in detail below.

[0029] As Figure 1 shown:

[0030] A shock absorption and damping system with online adjustable damping is used to achieve vibration reduction of the high-temperature and high-pressure steam pipeline 10 in a thermal power plant;

[0031] The shock absorption damping system includes a support hanger 1 located at the bottom of the pipeline 10, a viscous shock absorption damper 2 connected to the support hanger 1 and used to control the telescopic movement of the support hanger 1, a monitoring component 4 installed on the pipeline 10 and used to monitor the vibration condition of the high-temperature and high-pressure steam pipeline 10 in real time, a control unit respectively connected to the monitoring component 4 and the viscous shock absorption damper 2, and a liquid storage system 3 respectively connected to the viscous shock absorption damper 2 and the control unit; the control unit compares the speed value when the pipeline 10 vibrates monitored by the monitoring component 4 with the threshold value set in the control unit, and according to the comparison result, controls the delivery of damping media with different viscosities to the viscous shock absorption damper 2 through the liquid storage system 3, realizes the adjustment of the damping of the viscous shock absorption damper 2, thereby avoiding the generation of excessive acting force by the viscous shock absorption damper 2 and reducing the vibration of the pipeline 10.

[0032] In some possible implementation manners, the viscous shock absorption damper 2 includes a piston cylinder 21 containing a damping medium, a piston rod located inside the piston cylinder 21 and one end of which passes through the piston rod; the piston rod is connected to the support at the end passing through the piston rod; the piston cylinder 21 is connected to the liquid storage system 3, so as to realize the supply of damping media with different viscosities to the piston cylinder 21.

[0033] A variety of damping media with different viscosities are stored in the liquid storage system 3. During use, the control unit can deliver damping media with different viscosities into the piston cylinder 21 according to the actual vibration condition of the pipeline 10, so that the viscous shock absorption damper 2 generates different damping, avoids the generation of excessive acting force by the viscous shock absorption damper 2, and reduces the vibration of the pipeline 10.

[0034] In some possible implementation manners, in order to effectively realize the storage of damping media with different viscosities through the liquid storage system 3, so as to be able to deliver damping media with different viscosities into the piston cylinder 21 according to the use requirements; the liquid storage system 3 includes a storage tank one 31 storing a damping medium one, a storage tank two 32 storing a damping medium two, and a storage tank three 33 storing a damping medium three.

[0035] In some possible implementation manners, the viscosity of the damping medium one is 100 - 300 cSt;

[0036] The viscosity of the damping medium two is 300 - 600 cSt;

[0037] The viscosity of the damping medium three is 600 - 1000 cSt.

[0038] In some possible implementation manners, a pipeline one 34 is provided between the storage tank one 31 and the piston cylinder 21, a pipeline two 35 is provided between the storage tank two 32 and the piston cylinder 21, and a pipeline three 36 is provided between the pipeline one 34 between the storage tank one 31 and the piston cylinder 21.

[0039] In some possible embodiments, the structures of the first pipeline 34, the second pipeline 35, and the third pipeline 36 are the same, including a pipeline 10 and a control pump 37 installed on the pipeline 10; the control pump 37 is connected to a control unit.

[0040] The first pipeline 34, the second pipeline 35, and the third pipeline 36 are used to connect the storage tanks (the first storage tank 31, the second storage tank 32, and the third storage tank 33) to the piston cylinder 21 respectively, and the control pump 37 is used to convey the damping medium.

[0041] Furthermore, control valves are respectively arranged on the first pipeline 34, the second pipeline 35, and the third pipeline 36. The control valves are connected to the control unit and are arranged between the control pump 37 and the piston cylinder 21.

[0042] During use, the control unit controls the opening of different control pumps 37 and control valves according to the vibration condition of the pipeline 10, discharges the original damping medium in the piston cylinder 21. After the discharge is completed, the relationship between the control valve and the control pump 37 is adjusted, and the pump 37 and the control valve on another pipeline are opened to convey another damping medium to the piston cylinder 21, thereby adjusting the viscosity of the viscous damping liquid in the piston cylinder 21 and changing the damping of the viscous shock absorber 2.

[0043] For example, when the damping medium in the piston cylinder 21 is originally the first damping medium and needs to be adjusted to the second damping medium according to the vibration condition, first, the control unit controls the opening of the first control pump 37 to convey the first damping medium in the piston cylinder 21 to the first storage tank 31; then the first control pump 37 is closed, and the second control pump 37 is opened to convey the second damping medium in the second storage tank 32 to the piston cylinder 21, thereby changing the damping of the viscous shock absorber 2 and changing the vibration of the pipeline 10.

[0044] Furthermore, a liquid level sensor is arranged in the piston cylinder 21 to effectively monitor the liquid level of the damping medium in the piston cylinder 21. The liquid level sensor is connected to the control unit.

[0045] Furthermore, there are two groups of liquid level sensors, which can effectively ensure that the liquid level of the damping medium (the first damping medium or the second damping medium or the third damping medium) injected into the piston cylinder 21 meets the requirements, and can also ensure that when the damping medium is replaced, the viscous damping in the piston cylinder 21 can be completely discharged.

[0046] In some possible embodiments, the monitoring component 4 is a peak velocity measuring instrument.

[0047] An adjustment method for an on-line damping-adjusting shock damping system according to the above, specifically includes the following steps:

[0048] Step S1: The monitoring component 4 monitors the vibration condition of the pipeline 10 in real time, obtains the velocity value when the pipeline 10 vibrates, and conveys the velocity value to the control unit;

[0049] Step S2: The control unit compares the velocity value with the set threshold value and adjusts the vibration force of the viscous shock absorber 2.

[0050] In some possible implementation manners, the velocity value is the peak vibration velocity of the pipeline 10.

[0051] In some possible implementation manners, the velocity value is Vmax, and the threshold value is 12.6 mm / s;

[0052] When Vmax ≤ 12.6 mm / s, and the damping medium in the piston cylinder 21 is the first damping medium; when it is monitored that Vmax > 12.6 mm / s, all the first damping medium in the piston cylinder 21 is pumped out, and the second damping medium is conveyed into the piston cylinder 21 until the liquid level of the second damping medium meets the requirements;

[0053] When Vmax ≤ 12.6 mm / s, and the damping medium in the piston cylinder 21 is the second damping medium; when it is monitored that Vmax > 12.6 mm / s, all the second damping medium in the piston cylinder 21 is pumped out, and the third damping medium is conveyed into the piston cylinder 21 until the liquid level of the third damping medium meets the requirements.

[0054] The present invention is not limited to the foregoing specific implementation manners. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new combination of steps of any new method or process disclosed.

Claims

1. A shock-absorbing and damping system with online damping adjustment, used to achieve vibration reduction of pipelines; characterized in that: It includes a support bracket located at the bottom of the pipeline, a viscous shock-absorbing damper connected to the support bracket and used to control the extension and contraction of the support bracket, a monitoring component installed on the pipeline and used to monitor the vibration of the pipeline, a control unit connected to the monitoring component and the viscous shock-absorbing damper respectively, and a liquid storage system connected to the viscous shock-absorbing damper and the control unit respectively.

2. A shock absorbing and damping system with online damping adjustment according to claim 1, characterized in that: The viscous vibration damper comprises a piston cylinder containing a damping medium, and a piston rod located in the piston cylinder and having one end passing through the piston rod; the piston cylinder is connected to a liquid storage system.

3. A shock absorbing and damping system with online damping adjustment according to claim 2, characterized in that: The liquid storage system includes a storage tank 1 storing damping medium 1, a storage tank 2 storing damping medium 2, and a storage tank 3 storing damping medium 3.

4. The shock absorbing and damping system with online damping adjustment according to claim 3, characterized in that: The viscosity of the damping medium 1 is 100-300 cSt; The viscosity of the damping medium 2 is 300-600 cSt; The viscosity of the damping medium three is 600-1000 cSt.

5. The shock absorbing and damping system with online damping adjustment according to claim 3, characterized in that: A pipeline 1 is arranged between the storage tank 1 and the piston cylinder, a pipeline 2 is arranged between the storage tank 2 and the piston cylinder, and a pipeline 3 is arranged between the pipeline 1 and the piston cylinder.

6. The shock absorbing and damping system with online damping adjustment according to claim 5, characterized in that: The pipeline 1, pipeline 2 and pipeline 3 have the same structure, including pipelines and control pumps installed on the pipelines; the control pumps are connected to the control unit.

7. A shock absorbing and damping system with online damping adjustment according to any one of claims 1 to 6, characterized in that: The monitoring component is a peak speed measuring instrument.

8. A method for adjusting a shock absorbing damping system with online damping adjustment according to any one of claims 1 to 7, characterized in that: The specific steps include: Step S1: The monitoring component monitors the vibration of the pipeline in real time, obtains the speed value of the pipeline when it vibrates, and transmits the speed value to the control unit; Step S2: The control unit compares the speed value with the set threshold value and adjusts the vibration force of the viscous shock absorber.

9. The method for adjusting a shock absorbing and damping system with online damping adjustment according to claim 8, characterized in that: The velocity value is the peak vibration velocity of the pipeline.

10. A shock absorbing damping system and adjustment method for online damping adjustment according to claim 8, characterized in that: The speed value is Vmax, and the threshold value is 12.6 mm / s; When Vmax≤12.6mm / s, the damping medium in the piston cylinder is damping medium 1; when Vmax>12.6mm / s, the damping medium in the piston cylinder is damping medium 2; When Vmax≤12.6mm / s, the damping medium in the piston cylinder is damping medium 2; when Vmax>12.6mm / s, the damping medium in the piston cylinder is damping medium 3.

Images