CN209876153U - Universal viscous damper for vibration isolation and impact prevention of pipeline - Google Patents
Universal viscous damper for vibration isolation and impact prevention of pipeline Download PDFInfo
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- CN209876153U CN209876153U CN201920295583.3U CN201920295583U CN209876153U CN 209876153 U CN209876153 U CN 209876153U CN 201920295583 U CN201920295583 U CN 201920295583U CN 209876153 U CN209876153 U CN 209876153U
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Abstract
The utility model discloses an universal viscous damper for vibration isolation and impact prevention of pipelines, which comprises an upper connecting plate, a lower connecting plate, a cylinder body, a cover body and a piston; the cylinder body and the lower connecting plate are integrally formed, a damping agent is contained in the cylinder body, a piston fixedly connected with the upper connecting plate is arranged in the damping agent of the cylinder body, and the cover body covers the outside of the cylinder body and is fixedly connected with the upper connecting plate. The utility model discloses can adorn partially in advance viscous damper, guarantee that pipeline vibration system has sufficient offset under normal operating conditions, in addition, this viscous damper can provide the damping to vibration system's linear vibration and torsional vibration's six degrees of freedom, and the range of control vibration makes the vibration decay.
Description
Technical Field
The utility model relates to a attenuator, concretely relates to universal viscous damper for pipeline vibration isolation protecting against shock.
Background
The pipeline transportation system is widely applied to the fields of thermal power plants, nuclear power plants, chemical industry, steel plants, ships and the like. In pipelines for transporting fluids (liquid, vapor and powder), under normal working conditions or due to the adjustment of a production process, valves are required to be opened and closed, and a water pump and a water turbine can be suddenly opened and stopped. In this time, the liquid speed in the pipeline will change suddenly, and the pressure in the pipeline rises or falls rapidly, resulting in pipeline vibration or shaking, so that the pipeline generates large deviation in a certain direction, and the pipeline can collapse in severe cases, thereby seriously affecting the normal operation of the pipeline system. Long-term pipe vibrations can greatly reduce the service life of the pipe system and its coupling equipment, and the violent vibrations that may occur in certain operating situations can directly lead to safety accidents, which is obviously not allowable for pipe systems that require long-term continuous operation. The vibration isolation of the hydraulic damper and the rubber support which are widely applied at present can only realize unidirectional vibration isolation, can not realize multidirectional vibration isolation, simultaneously, the rubber support can not consume energy and reduce vibration, and the common rubber support has weaker tensile property, is easy to damage by pulling when the device is subjected to large deformation, and is also easy to age.
Similar chinese utility model patent of grant publication No. CN205606073U a viscous damper of control pipeline vibration and rocking, including the base and with the base even cylinder body as an organic whole, the damping agent has been held in the cylinder body, be provided with in the damping agent of cylinder body with top cap fixed connection's piston, the diameter of piston is 2/3 to 4/5 of cylinder body internal diameter, installs elastic connection's seal cover between top cap lower extreme and the cylinder body. The damper is simple and reliable in structure, long in service life and capable of effectively controlling vibration and shaking of the pipeline. However, the viscous damper generates a large amount of heat in the working process, the elastic sealing sleeve is used for sealing and connecting the cylinder body and the top cover, so that heat dissipation is not facilitated, the elastic sealing sleeve is easy to generate the condition of failure due to thermal aging, and the service life is short.
SUMMERY OF THE UTILITY MODEL
The damper is a vibration control basic element widely applied to vibration isolation, energy consumption and impact prevention of pipeline systems in the fields of energy power chemical engineering and steel. The common hydraulic damper is perfect, but is easy to age, leak oil, the sealing system is easy to damage and lose efficacy, the structure is complex, the manufacturing cost is high, the service life is short, the resource is wasted, and the environment is polluted. The utility model discloses a solve present hydraulic damper and rubber support vibration isolation can not multi-direction vibration isolation and the problem of power consumption damping, provide a viscous damper, this viscous damper can carry out diversified power consumption damping.
The utility model provides a technical scheme that this technical problem adopted is: a universal viscous damper for vibration isolation and impact prevention of pipelines comprises an upper connecting plate, a lower connecting plate, a cylinder body, a cover body and a piston; the cylinder body and the lower connecting plate are integrally formed, a damping agent is contained in the cylinder body, a piston fixedly connected with the upper connecting plate is arranged in the damping agent of the cylinder body, and the cover body covers the outside of the cylinder body and is fixedly connected with the upper connecting plate.
Furthermore, a stroke scale plate is arranged on the outer surface of the cylinder body and reflects the displacement of the cover body relative to the bottom of the cylinder body in the vertical direction, and the stroke scale plate is used for indicating the expansion displacement of the pipeline and the equipment.
Furthermore, the corners of the upper connecting plate and the lower connecting plate are provided with mounting through holes. The mounting through holes can be used for connecting a fixing piece with enough rigidity or a vibration system.
The locking device comprises a locking rod and a locking mechanism, wherein the locking rod comprises a rod body and an extending part, the extending part comprises an upper extending part and a lower extending part, the upper extending part and the lower extending part are respectively arranged at the upper end and the lower end of the rod body and extend outwards perpendicular to the rod body, a first mounting through groove is formed in the tail end of the upper extending part, a second mounting through groove is formed in the tail end of the lower extending part, a first through hole is formed in the corner of an upper connecting plate, and a second through hole is formed in the corner of a lower connecting plate; the first through hole and the second through hole are oval through holes, the first through hole is detachably and fixedly connected with the first installation through groove through a fastener, the second through hole is detachably and fixedly connected with the second installation through groove through a fastener, and the oval major axis direction of the first through hole is mutually perpendicular to the oval major axis direction of the second through hole when the connection and fixation are performed. Through setting up the locking lever, this locking lever can ensure the upper junction plate of viscous damper and the relative fixed in position of lower connecting plate when the transportation, and the piston does not have relative damping agent motion promptly, avoids the damping agent to reveal the transportation of being convenient for. Through setting up first through-hole and second through-hole into oval through-hole for the upper junction plate can squint lower connecting plate certain distance and carry out dress partially in advance, avoids the not enough condition of displacement volume to appear in normal during operation, connects the oval major axis direction mutually perpendicular of fixed time first through-hole major axis direction and second through-hole, makes upper junction plate and lower connecting plate can carry out dress partially in advance on the X-Y dimension plane of injecing, has increased the space of skew.
Furthermore, the long elliptical axes of the first through holes at the corners of the upper connecting plate are arranged in parallel, and the long elliptical axes of the second through holes at the corners of the lower connecting plate are arranged in parallel; the tail end of the upper extending portion is recessed in the extending direction to form a first mounting through groove, and the tail end of the lower extending portion is recessed in the extending direction to form a second mounting through groove. Through setting up the logical groove of first installation and the logical groove of second installation of indent, can directly be along the direction and the mounting joint of indent when the installation is fixed to fixed by the mounting, easy to assemble.
Furthermore, the heat insulation and dissipation device also comprises a heat insulation and dissipation support; the heat insulation and dissipation support comprises a first bearing plate, a second bearing plate and a plurality of vertical plates; the first bearing plate and the second bearing plate are arranged in parallel, the vertical plates are vertically fixedly connected between the first bearing plate and the second bearing plate, and the vertical plates are radially arranged at equal angles along the middle part of the first bearing plate or the second bearing plate. By adopting the structure, the contact area between the damper and the outside air can be increased, and the viscous damper has good heat insulation and dissipation effects, so that the viscous damper can be used at the running temperature of more than 600 ℃ in a pipeline.
Furthermore, the first board and the second board of accepting are accepted the edge all and are equipped with connect the via hole, connect the via hole and match installation via hole, installation via hole with connect the via hole and pass through the bolt and can dismantle the connection.
Preferably, the damping agent is a viscous medium based on polyisobutylene. The viscous medium can provide a medium damping coefficient, and is suitable for a vibration system with the running temperature of-10 ℃ to +40 ℃ under the continuous running working condition.
Preferably, the damping agent is a viscous medium based on silicone oil. The viscous medium can provide a lower damping coefficient, and is suitable for a vibration system with the running temperature of-30 ℃ to +110 ℃ under the continuous running working condition.
Preferably, the damping agent is a high viscosity organic liquid or a complex mixture of hydrocarbons and non-metallic derivatives thereof.
Compared with the prior art, the method has the following positive effects:
1. viscous damper, its piston can be at the inside arbitrary direction skew of the cylinder body that is soaking the damping agent that contains the high viscosity organic medium, can provide the damping to the linear vibration of vibration system and the vibration of the six degrees of freedom of torsional vibration, the range of control vibration, the damping vibration.
2. Viscous damper, its cover body can prevent that outside dust and impurity, unclear liquid from getting into the inside damping agent of the inside pollution of cylinder body, and this cover body is difficult for ageing, long service life.
3. Viscous damper, through the design of locating the cover body cover at the cylinder body, the space between cover body inner wall and the cylinder body outer wall helps the heat of the inside production of cylinder body to give off fast, reduces the influence of heat radiation to the damping agent.
4. Viscous damper, to the problem that the skew that can use when making the skew consumption of pipeline production to the vibration when opening and close suddenly by the pipeline can be used to normal during operation, only need when the installation, with the certain offset of the opposite direction skew of the direction of piston toward pipeline skew, just can make the intermediate position that the normal during operation piston of pipe-line system can be located the damping agent for the piston can have sufficient displacement volume.
5. The utility model discloses simple structure, do not have accurate part, cost low, stable performance, reliable operation, no wearing and tearing part, longe-lived, can direct continuous use, basically need not maintenance, environmental protection practicality.
The present invention will be further explained with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a universal viscous damper for vibration isolation and impact protection of a pipeline according to a first embodiment of the present invention.
Fig. 2 is a central plane sectional view of a universal viscous damper for vibration isolation and impact protection of pipelines according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the universal viscous damper for vibration isolation and impact protection of a pipeline in the first embodiment of the present invention during offset installation.
Fig. 4 is a schematic structural diagram of a locking rod of a universal viscous damper for vibration isolation and impact protection of a pipeline according to a first embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a universal viscous damper for vibration isolation and impact protection of a pipeline according to a second embodiment of the present invention.
Fig. 6 is a schematic view of a heat insulation and dissipation support of the universal viscous damper for vibration isolation and impact protection of a pipeline according to the second embodiment of the present invention.
Wherein, 1-connecting the board; 2-a cover body; 3-a piston; 4-a damping agent; 5-cylinder body; 6-lower connecting plate; 7-a locking lever; 8-stroke scale plate; 11-heat insulation and dissipation support; 12-a first via; 13-mounting a through hole; 61-a second via; 71-a rod body; 72-an upper extension; 73-a lower extension; 74-first mounting channel; 75-a second mounting channel; 111-a first bearing plate; 112-a second bearing plate; 113-standing a plate; 114-connecting vias.
Detailed Description
Example one
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in FIGS. 1-4, the utility model relates to an universal viscous damper for pipeline vibration isolation protecting against shock, which comprises an upper connecting plate 1, a lower connecting plate 6, a cylinder body 5, a cover body 2 and a piston 3.
The cylinder body 5 with lower connecting plate 6 integrated into one piece, contain damping agent 4 in the cylinder body 5, be equipped with in the damping agent 4 of cylinder body with upper junction plate fixed connection's piston 3, the external diameter of piston 3 with the internal diameter of cylinder body 5 can carry out special design according to concrete operating mode.
The cover body 2 covers the cylinder body 5 and is fixedly connected with the upper connecting plate 1.
The outer surface of the cylinder body 5 is provided with a stroke scale plate 8, and the stroke scale plate 8 reflects the displacement of the cover body 2 relative to the bottom of the cylinder body 5 in the vertical direction and is used for indicating the expansion displacement of a pipeline and equipment.
The horizontal distance of the initial position of the central shaft of the piston 3 deviating from the initial position of the central shaft of the cylinder 5 can be specially designed according to specific working conditions. Because some vibration systems often need to open and close valves during the adjustment of the production process, the water pump and the water turbine can be suddenly started and stopped. This kind of time, the liquid speed in the pipeline will take place the abrupt change, and the pressure in the pipeline rises rapidly or descends, leads to the pipeline vibration for the pipeline produces great skew in certain direction, does not have partially in advance when most pipe-line erection attenuator at present, just so has used the partial displacement volume of attenuator when opening and close the valve, makes the displacement volume that produces during normal work not enough or the displacement volume too big, makes the damping capacity greatly reduced of attenuator, viscous damper when the installation, go on with the dress partially to viscous damper, make a piston skew cylinder body horizontal distance of its, make pipe-line system normally have sufficient offset during operation.
Specifically, the corners of the upper connecting plate and the lower connecting plate are provided with mounting through holes 13. The mounting through-hole 13 may be used to connect a sufficiently rigid fixture or vibration system.
Specifically, the locking rod 7 further comprises a locking rod 7, wherein the locking rod 7 comprises a rod body 71 and an extending part, the extending part comprises an upper extending part 72 and a lower extending part 73, a first mounting through groove 74 is formed in the tail end of the upper extending part 72, a second mounting through groove 75 is formed in the tail end of the lower extending part 73, first through holes 12 are formed in the corners of the upper connecting plate 1, second through holes 61 are formed in the corners of the lower connecting plate 6, the long elliptical axes of the first through holes 12 at the corners of the upper connecting plate 1 are arranged in parallel, and the long elliptical axes of the second through holes 61 at the corners of the lower connecting plate 6 are arranged in parallel; the first through hole 12 and the second through hole 61 are oval through holes, the first through hole 12 and the first installation through groove 74 are detachably and fixedly connected through a fastener, the second through hole 61 and the second installation through groove 75 are detachably and fixedly connected through a fastener, and the oval major axis direction of the first through hole 12 is perpendicular to the oval major axis direction of the second through hole 61 when the connection and fixation are performed. Preferably, the fastening member is a bolt and a nut, and the bolt and the nut should ensure that the bolt head and the nut can abut against and fix the first installation through groove and the first through hole, and ensure that the bolt head and the nut can abut against and fix the second installation through groove and the second through hole.
The upper connecting plate 1 and the lower connecting plate 6 are detachably connected through a locking rod 7, and the locking rod 7 can ensure that the positions of the upper connecting plate and the lower connecting plate of the viscous damper are relatively fixed during transportation, namely, a piston does not move relative to a damping agent, so that the damping agent is prevented from being leaked. Through establishing first through-hole and second through-hole into the ellipse, can conveniently adorn partially in advance viscous damper, only need during the installation to carry out reverse dress partially with upper junction plate and lower connecting plate toward pipeline skew direction, the locking lever makes the position of adorning partially in advance more accurate. When the viscous damper and the pipeline system are installed, only the bolt is needed to be disassembled and the locking rod is taken out.
When the viscous damper is used, the mounting through hole of one of the upper connecting plate and the lower connecting plate of the viscous damper needs to be connected with a fixing piece with enough rigidity, and the mounting through hole of the other connecting plate is connected with a vibration system (such as a power pipeline). The piston fixedly connected with the upper connecting plate in the viscous damper can freely move in the damping agent in the cylinder body, can provide damping for the vibration of the vibration system with six degrees of freedom of linear vibration and torsional vibration, dissipates kinetic energy consumption through the movement of the piston in the damping agent, controls the amplitude of vibration and attenuates the vibration.
Example two
As shown in fig. 5 to 6, the structure of the universal viscous damper for vibration isolation and impact prevention of a pipeline according to the second embodiment is substantially the same as that of the first embodiment, and the universal viscous damper for vibration isolation and impact prevention of a pipeline according to the first embodiment is different in that the universal viscous damper further comprises a heat isolation and dissipation support 11; the heat insulation and dissipation support 11 comprises a first bearing plate 111, a second bearing plate 112 and a plurality of vertical plates 113; the first receiving plate 111 and the second receiving plate 112 are arranged in parallel, the vertical plates 113 are vertically fixed between the first receiving plate 111 and the second receiving plate 112, the vertical plates 113 are radially arranged at equal angles along the middle portion of the first receiving plate 111 or the second receiving plate 112, and preferably, the number of the vertical plates 113 is 6. The corners of the first receiving plate 111 and the second receiving plate 112 are both provided with a connecting through hole 114, and the connecting through hole 114 matches with the mounting through hole 13.
During installation, after the locking rod pre-biased to be installed on the viscous damper is disassembled, the installation through hole 13 is detachably connected with the connecting through hole 114 on the first bearing plate or the second bearing plate through a bolt. The heat insulation and dissipation support can increase the contact area between the damper and the outside air, has good heat insulation and dissipation effect, and can be used at the running temperature of more than 600 ℃ of a pipeline.
EXAMPLE III
The third embodiment of the universal viscous damper for vibration isolation and impact prevention of pipelines has a structure substantially the same as that of the first embodiment, and on the basis of the first embodiment, the third embodiment of the present invention is characterized in that the end of the upper extension 72 is recessed in the extending direction to form a first mounting through groove 74, and the end of the lower extension 73 is recessed in the extending direction to form a second mounting through groove 75. Through setting up the logical groove of first installation and the logical groove of second installation of indent, can directly be along the direction and the mounting joint of indent when the installation is fixed to fixed by the mounting, easy to assemble.
Example four
The structure principle of the universal viscous damper for vibration isolation and impact prevention of the pipeline in the fourth embodiment is the same as that of the first embodiment, the second embodiment or the third embodiment, and on the basis of the first embodiment, the second embodiment or the third embodiment, the damper 4 in the fourth embodiment is a viscous medium based on silicone oil. The viscous medium can provide a lower damping coefficient, and is suitable for a vibration system with the running temperature of-30 ℃ to +110 ℃ under the continuous running working condition.
EXAMPLE five
The fifth embodiment is the same as the fourth embodiment except that the damping agent 4 is different, and the damping agent 4 in the fifth embodiment is a viscous medium based on polyisobutylene. The viscous medium can provide a medium damping coefficient, and is suitable for a vibration system with the running temperature of-10 ℃ to +40 ℃ under the continuous running working condition.
EXAMPLE six
The universal viscous damper for vibration isolation and impact prevention of pipelines in the sixth embodiment is the same as the fourth embodiment except that the damping agent 4 is different, and the damping agent 4 in the sixth embodiment is a high-viscosity organic liquid or a complex mixture composed of hydrocarbons and non-metallic derivatives thereof. Preferably, the damping agent 4 is a damping material based on modified asphalt. The damping material has high damping performance, namely good shock absorption.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are also intended to be included within the scope of the claims and the equivalent technical scope of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. A universal viscous damper for vibration isolation and impact prevention of pipelines is characterized by comprising an upper connecting plate, a lower connecting plate, a cylinder body, a cover body and a piston; the cylinder body and the lower connecting plate are integrally formed, a damping agent is contained in the cylinder body, a piston fixedly connected with the upper connecting plate is arranged in the damping agent of the cylinder body, and the cover body covers the outside of the cylinder body and is fixedly connected with the upper connecting plate.
2. The universal viscous damper for pipe vibration isolation and impact prevention according to claim 1, wherein stroke scale plates are arranged on the outer surface of the cylinder body.
3. The universal viscous damper for pipe vibration isolation and impact prevention according to claim 1, wherein mounting through holes are formed at the corners of the upper connecting plate and the lower connecting plate.
4. The universal viscous damper for pipe vibration isolation and impact prevention according to claim 1, further comprising a locking rod, wherein the locking rod comprises a rod body and an extension part, the extension part comprises an upper extension part and a lower extension part, the end of the upper extension part is provided with a first mounting through groove, the end of the lower extension part is provided with a second mounting through groove, the corner of the upper connecting plate is provided with a first through hole, and the corner of the lower connecting plate is provided with a second through hole; the first through hole and the second through hole are oval through holes, the first through hole is detachably and fixedly connected with the first installation through groove through a fastener, the second through hole is detachably and fixedly connected with the second installation through groove through a fastener, and the oval major axis direction of the first through hole is mutually perpendicular to the oval major axis direction of the second through hole when the connection and fixation are performed.
5. The universal viscous damper for vibration isolation and impact prevention of pipelines according to claim 4, wherein the major elliptical axes of the first through holes at the corners of the upper connecting plate are arranged in parallel, and the major elliptical axes of the second through holes at the corners of the lower connecting plate are arranged in parallel; the tail end of the upper extending portion is recessed in the extending direction to form a first mounting through groove, and the tail end of the lower extending portion is recessed in the extending direction to form a second mounting through groove.
6. The universal viscous damper for vibration isolation and impact prevention of pipelines according to claim 3, further comprising a heat isolation and dissipation support; the heat insulation and dissipation support comprises a first bearing plate, a second bearing plate and a plurality of vertical plates; the first bearing plate and the second bearing plate are arranged in parallel, the vertical plates are vertically fixedly connected between the first bearing plate and the second bearing plate, and the vertical plates are radially arranged at equal angles along the middle part of the first bearing plate or the second bearing plate.
7. The universal viscous damper for vibration isolation and impact prevention of pipelines according to claim 6, wherein the corners of the first bearing plate and the second bearing plate are provided with connecting through holes, the connecting through holes are matched with the mounting through holes, and the mounting through holes are detachably connected with the connecting through holes through bolts.
8. The universal viscous damper for vibration isolation and impact prevention of pipelines according to any one of claims 1 to 7, wherein the damping agent is a viscous medium based on polyisobutylene.
9. The universal viscous damper for vibration isolation and impact prevention of pipelines according to any one of claims 1 to 7, wherein the damping agent is a viscous medium based on silicone oil.
10. The universal viscous damper for vibration isolation and impact prevention of pipelines according to any one of claims 1 to 7, wherein the damping agent is a high-viscosity organic liquid or a complex mixture of hydrocarbons and non-metallic derivatives thereof.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920295583.3U CN209876153U (en) | 2019-03-08 | 2019-03-08 | Universal viscous damper for vibration isolation and impact prevention of pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920295583.3U CN209876153U (en) | 2019-03-08 | 2019-03-08 | Universal viscous damper for vibration isolation and impact prevention of pipeline |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737243A (en) * | 2019-03-08 | 2019-05-10 | 西安华宁管道技术有限公司 | A kind of universal viscous damper for pipeline vibration isolation protecting against shock |
| CN112982705A (en) * | 2021-02-08 | 2021-06-18 | 同济大学 | Bidirectional shearing type inertial mass damper |
| WO2022119449A1 (en) * | 2020-12-03 | 2022-06-09 | Momentum Technologies AS | Viscoelastic damper assembly |
-
2019
- 2019-03-08 CN CN201920295583.3U patent/CN209876153U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737243A (en) * | 2019-03-08 | 2019-05-10 | 西安华宁管道技术有限公司 | A kind of universal viscous damper for pipeline vibration isolation protecting against shock |
| WO2022119449A1 (en) * | 2020-12-03 | 2022-06-09 | Momentum Technologies AS | Viscoelastic damper assembly |
| CN112982705A (en) * | 2021-02-08 | 2021-06-18 | 同济大学 | Bidirectional shearing type inertial mass damper |
| CN112982705B (en) * | 2021-02-08 | 2022-05-31 | 同济大学 | Bidirectional shearing type inertial mass damper |
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