CN202868189U - Vibration-reducing device of condensation pipeline - Google Patents
Vibration-reducing device of condensation pipeline Download PDFInfo
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- CN202868189U CN202868189U CN201220551853.0U CN201220551853U CN202868189U CN 202868189 U CN202868189 U CN 202868189U CN 201220551853 U CN201220551853 U CN 201220551853U CN 202868189 U CN202868189 U CN 202868189U
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- vibration damper
- condensation
- inner chamber
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Abstract
The utility model discloses a vibration-reducing device of a condensation pipeline. The vibration-reducing device of the condensation pipe comprises a liquid main flow inlet which is communicated with a branch pipe used for two-phase flow passing. The branch pipe is perpendicular to the direction of the liquid main flow inlet. The vibration-reducing device comprises an inner cavity communicated with the liquid main flow inlet and an outer cavity communicated with the branch pipe. The inner cavity is connected in the outer cavity in a sleeved mode. A clearance is arranged at the position where the inner cavity is communicated with the outer cavity. A thread groove structure is arranged on the inner wall of the outer cavity. According to the vibration-reducing device of the condensation pipe, the thread groove structure is utilized, heat transmission is strengthened, condensation is quickened, and therefore pressure pulsation caused by vapour condensation is reduced to the minimum, condensed fluid flows back to the inner cavity and then passes a gradual-contract mouth, and original pressure fluctuation is changed again, and finally double vibration reducing is achieved. The vibration-reducing device of the condensation pipe can be applied to a condensation pipeline in which air and liquid exist simultaneously, and is quite good in vibration-reducing effect.
Description
Technical field
The utility model relates to a kind of pipe vibration-damping field, is specifically related to a kind of condensation pipe vibration damper.
Background technique
Fluid conveying pipe is in the industry production devices such as oil, chemical industry, power station, by wide one general application.Under the fluid effect of certain pressure and speed, can produce hydrodynamic pressure on these tube walls.Time-dependent pipe fails to be convened for lack of a quorum and causes the vibration of pipeline, such as reciprocating pump because inhale, the intermittence of discharge capacity, the switch ons of valve etc. cause the parameters such as pressure, speed, density of pipe stream to present periodic variation with the position in time.Consequent phenomenon is " pulsation of pipe stream ".The pulsation of pipe stream is the main cause that causes pipe vibration.It is not that this pulsation is divided into again air-flow and liquid stream, according to the difference of fed sheet of a media and to some extent difference.No matter be air-flow or fluid pulse, they all are the immediate causes that causes pipe vibration, therefore will eliminate pipe vibration, must at first start with from the containment fluid pulsation, that is to say, the best approach that solves pipe vibration is to eliminate vibration source.
Pipe vibration can produce many harm, studies show that, in 100 especially big property damage events of world's petrochemical industry, the accident that has pipe vibration to cause accounts for 19%, occupies second (first is mechanical failure).Strong pipe vibration can cause pipeline configuration, pipeline fittings to produce fatigue ruption; Produce noise, affect many-sided harm such as operating environment, especially to the pipeline of harm medium is housed, avoid the generation of its vibration, have great significance.
In recent years, carried out many researchs for pipe vibration both at home and abroad, ducted flow and pressure pulsation are the main causes that produces pipe vibration, and control flow and pressure pulsation technology comprise the contents such as the research of pulsation source, transmission characteristics and response characteristic and improvement.The most direct method of elimination pipe vibration then is the vibration at pulsation source place eliminate fluid, yet, to accomplish this point with existing experience, have larger difficulty.For different pipe-line systems, not only vibration source is difficult to control, but also need to carry out larger repacking to pipeline configuration, poor operability, uncertain energy success.Therefore, need to adopt special vibration damper to come flowing of smooth working medium.
At present, the vibration damper for the pipe vibration exploitation according to fed sheet of a media, is divided into gas, fluid pipeline vibration damper.The vibration damper of gas pipeline mainly contains: buffer, orifice plate etc.; Vibration damper for fluid pipeline mainly contains: energy-storage type, expansion tubular type, heimholtz resonator and many strong acoustic resonator etc.Although these vibration dampers have reduced the pressure pulsation of pipe-line system to a certain extent, improved the fluid flow state of whole pipeline, they also exist the following shortcoming that is difficult to overcome:
1) the vibration damper volume is larger; Such as knock out drum, accumulator etc., larger volume brings larger difficulty not only for installation and construction, and occupies larger installing space.
2) there is not simple method to regulate the resonant frequency of vibration damper, to guarantee the attenuating of its fluid pulsation.Because the change of operating mode all might change the fluid pulsation frequency, thereby affects attenuating.
3) parameter is selected comparatively difficulty, and as for knock out drum, accumulator, it the most important thing is swept volume and Preliminary pressure-filled, and determining of these parameters often needs to determine by repetition test, and difficulty is applied.
4) attenuation performance is lower, and attenuating is undesirable.
Consult pertinent literature both domestic and external and report, the vibration damper of developing for gas pipeline vibration and fluid pipeline vibration is relatively many, yet for the pipe vibration that phase transformation is arranged, relevant vibration damper has no report.
The model utility content
The technical problems to be solved in the utility model provide a kind of can be used for the gas pipeline vibration and fluid pipeline vibrates, in particular for the vibration damper of condensation pipe that phase transformation is arranged.
The technical solution of the utility model is: a kind of condensation pipe vibration damper, comprise liquid main flow entrance, and described liquid main flow entrance is communicated with an arm that passes through for two phase flow, and described arm is perpendicular to described liquid main flow Way in; Described vibration damper comprises the inner chamber that connects with described liquid main flow entrance, and the exocoel that is communicated with described arm, and described inner chamber is socketed in the described exocoel, and described inner chamber is being provided with the space with the exocoel connectivity part; Described outer cavity wall is provided with the thread groove structure.
Wherein, described inner chamber entrance is the convergent mouth structure, described inner chamber with the bore of described exocoel connectivity part less than inner chamber ingress bore.
Further, described arm adopts and departs from described liquid main flow entrance axis mode and install.
Further, described space is annular space, and the sectional area of described annular space is slightly larger than the sectional area of described arm.
Wherein, described arm adopts gusset to fix.
Wherein, described arm place's employing flange connects.
Further, the integral installation of described vibration damper adopts flange to connect.
Know-why of the present utility model is:
(1) invented a pulsation dampening (being vibration damper) that utilizes fluid mechanics mechanism.Its principle be fluid in the process of vibration damper of flowing through, the main pipe fluid is walked inner chamber, the two-phase of the arm exocoel that flows away through thread groove, is back in the inner chamber, to reach the effect of vibration damping.This vibration damper mainly comprises with the inner core of convergent mouth, carves the elements such as threaded exocoel, arm, flange, sees Fig. 1.The present invention adopt this kind structure former because: first, Two-phase Flow Pipeline Transport exists phase transformation, not only in the arm owing to condensation produces larger pressure pulsation, and because the pressure transmission, also there is larger fluctuation pressure in the main pipe, therefore is necessary main pipe and simultaneously weakening of arm.The second, flange arrangement is adopted at two ends, is easy for installation and removal, and improves utilization ratio.The 3rd, this vibration damper volume is little, simple to operate, need not to consider that the pipeline installing space is narrow and small and can't installing of causing.
(2) mobile for gas-liquid two-phase in the arm, fluid is constantly condensation in flow process, then is flowed in the main pipe.In this process, exist larger pressure surge.Required time of fluid condensation is longer, the impact that pressure surge causes and to transmit distance just larger, and this influence of vibration to whole pipeline is huge.Therefore be carved with the thread groove structure in the utility model exocoel, and arm adopts the off-axis line to install, the advantage of this design is: first, the thread groove structure is when upsetting original fluctuation pressure, more can play the effect of augmentation of heat transfer, accelerate the condensation of steam, make a pipe fluid before confluxing, keep pressure stability, pressure pulsation is dropped to minimum.The second, arm off-axis line is installed, and makes fluid when flowing through thread groove, can have maximum tangential velocity, ensures enough energy flows through thread groove, then is flowed in the main pipe.
(3) in the inner chamber, adopt the convergent mouth structure, and be carved with annular space at convergent mouth place, make things convenient for the exocoel condensed fluid to conflux to main pipe, the annular space sectional area is slightly larger than the smaller branch pipe sectional area.Adopt fluid mechanics principle, determine that the optimal cross section of convergent mouth is long-pending, to reach optimum effectiveness in vibration suppression, make the Pressure Drop of main pipe reach maximum; Tapered configuration has guaranteed that transitional fluid is steady, has avoided structural mutation and the larger pressure pulsation that causes, also when guaranteeing to subdue fluctuation pressure, makes drag losses reach minimum simultaneously; Determining of annular space sectional area guaranteed that a pipe fluid has larger space and flows in the main pipe, do not produce hydrops because sectional area is too small, takes into account simultaneously designing requirement, so that whole vibration damper volume reaches optimization.
(4) this vibration damper need not pre-operation before installation, can directly install and use, and has reduced troublesome poeration, has improved effectiveness in vibration suppression, is easy to promote.
(5) arm position adopts gusset to fix, and has more strengthened stability and the working life of arm, has improved the safe application performance of whole vibration damper.
The beneficial effects of the utility model are:
(1) adopts heat conduction reinforced technology and vibration control theory, designed for the vibration damper that the phase transformation piping vibration is arranged, changed that original vibration damper vibration damping is single, using scope is narrow, the situation that effectiveness in vibration suppression is undesirable.The present invention will fill up the blank of China's vibration damping in this kind situation.
(2) adopt interior exocoel dual transport stream road, main pipe and branch pipe(tube) pressure pulsation are subdued simultaneously, reach maximum effectiveness in vibration suppression.
(3) adopt the convergent mouth structure, and determined suitable annular space cross section.Both guaranteed best Pressure Drop, and transition is comparatively steady, has avoided excessive drag losses, has saved the energy.Guaranteed that simultaneously the fluid in the exocoel is back in the inner chamber smoothly.
(4) outer cavity space adopts the thread groove structure.This structure has the effect of augmentation of heat transfer, makes gas phase accelerate condensation, pressure pulsation is dropped to minimum.Thereby reach better effectiveness in vibration suppression.
(5) adopt form of flanges, guaranteed this vibration damper in use, be easy to dismounting, improved the utilization efficiency of vibration damper, saved cost.
(6) by the method for numerical simulation, analyzed the situation of this vibration damper to the fluctuation pressure decay, verified the effectiveness in vibration suppression of this vibration damper.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model condensation pipe vibration damper.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the enlarged diagram at I place among Fig. 1, i.e. thread groove structural representation in the exocoel.
Among the figure, 1-the first flange; The 2-urceolus; 3-convergent mouth; The 4-arm; 5-the second flange; The 6-inner core; The 7-exocoel; The 8-inner chamber, the 9-thread groove.Arrow A represents main flow direction, and arrow B represents the two phase flow direction.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.
As shown in Figure 1, a kind of condensation pipe vibration damper comprises liquid main flow entrance, and described liquid main flow entrance is communicated with an arm 4 that passes through for two phase flow; Described vibration damper comprises the inner chamber 8 that connects with described liquid main flow entrance, and the exocoel 7 that is communicated with described arm 4, and described inner chamber 8 is socketed in the described exocoel 7, and described inner chamber 8 is being provided with the space with exocoel 7 connectivity parts; Described exocoel 7 inwalls are provided with thread groove 9.Inner chamber 8 entrances are the convergent mouth structure, described inner chamber 8 with the bore of described exocoel 7 connectivity parts less than inner chamber 8 ingress bores.The outer rim of inner chamber 8 is inner core 6, and the outer rim of exocoel is urceolus 2, and main flow liquid flows out vibration damper by inner core.
One preferred embodiment in, described arm 4 is perpendicular to described liquid main flow entrance.Described inner chamber entrance is liquid main flow entrance.Described inner chamber 8 is annular space in the space with exocoel 7 joints, and the sectional area of described annular space is slightly larger than the sectional area of described arm 4.
Further, another preferred embodiment in, described arm 4 adopts and departs from described liquid main flow entrance axis mode and installs, as shown in Figure 2.Arm off-axis line is installed, and makes fluid when flowing through thread groove 9, can have maximum tangential velocity, ensures enough energy flows through thread groove 9, then is flowed in the main pipe.The structure for amplifying of thread groove 9 is seen Fig. 3.
Arm 4 can adopt gusset to fix.Arm 4 places can adopt flange to connect, i.e. the second flange 5.In addition, the integral installation of vibration damper also can adopt flange to connect, i.e. the first flange 1 among Fig. 1.Like this can convenient construction and maintenance, improve utilization ratio.
The vibration damping flow process of vibration damper is: the fluid of main pipe flow in the vibration damper inner chamber 8 by the convergent mouth, then flows out vibration damper, flows to shown in the figure lateral arrows.Two phase flow enters into arm 4, shown in vertical arrow, flows in the vibration damper exocoel 7, and by the effect of thread groove 9, fully condensation, condensed fluid enters into the annular space of convergent mouth 3, in the inner chamber 8 that then confluxes.Fluid is through the convergent mouth, and the effect of exocoel thread groove 9, realizes the decay of pressure pulsation, thereby realizes vibration damping.
The utility model discloses a kind of dual runner vibration damper with convergent mouth and worm structure.Its principle is to utilize the thread groove structure, and augmentation of heat transfer is accelerated condensation, thereby dropped to the pressure pulsation that steam-condensation causes minimum; Condensed fluid is back in the inner chamber, through the convergent mouth, again changes original pressure surge, realizes double damping.This vibration damper goes for gas and the simultaneous condensation pipe of liquid, and effectiveness in vibration suppression is very good.
Claims (7)
1. a condensation pipe vibration damper comprises liquid main flow entrance, it is characterized in that: described liquid main flow entrance is communicated with an arm (4) that passes through for two phase flow, and described arm (4) is perpendicular to described liquid main flow Way in; Described vibration damper comprises the inner chamber (8) that connects with described liquid main flow entrance, and the exocoel (7) that is communicated with described arm (4), and described inner chamber (8) is socketed in the described exocoel (7), and described inner chamber (8) is being provided with the space with exocoel (7) connectivity part; Described exocoel (7) inwall is provided with the thread groove structure.
2. condensation pipe vibration damper according to claim 1 and 2 is characterized in that described inner chamber (8) entrance is the convergent mouth structure, described inner chamber (8) with the bore of described exocoel (7) connectivity part less than inner chamber (8) ingress bore.
3. condensation pipe vibration damper according to claim 1 and 2 is characterized in that described arm (4) employing departs from described liquid main flow entrance axis mode and installs.
4. condensation pipe vibration damper according to claim 1 is characterized in that described space is annular space, and the sectional area of described annular space is slightly larger than the sectional area of described arm (4).
5. condensation pipe vibration damper according to claim 1 is characterized in that described arm (4) adopts gusset to fix.
6. condensation pipe vibration damper according to claim 1 is characterized in that described arm (4) locates to adopt flange to connect.
7. condensation pipe vibration damper according to claim 6 is characterized in that the integral installation of described vibration damper adopts flange to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220551853.0U CN202868189U (en) | 2012-10-25 | 2012-10-25 | Vibration-reducing device of condensation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220551853.0U CN202868189U (en) | 2012-10-25 | 2012-10-25 | Vibration-reducing device of condensation pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN202868189U true CN202868189U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220551853.0U Expired - Fee Related CN202868189U (en) | 2012-10-25 | 2012-10-25 | Vibration-reducing device of condensation pipeline |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775782A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Shock absorber of condensation pipeline and shock absorption method |
| CN106402532A (en) * | 2016-11-10 | 2017-02-15 | 贵州黔北粮仓米业有限公司 | Pipeline connecting structure applied to air compressor |
| CN109442110A (en) * | 2018-11-02 | 2019-03-08 | 山东科技大学 | A kind of device and its electrolyte filling method reducing lotion pipeline resistance |
-
2012
- 2012-10-25 CN CN201220551853.0U patent/CN202868189U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775782A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Shock absorber of condensation pipeline and shock absorption method |
| CN103775782B (en) * | 2012-10-25 | 2016-08-03 | 中国石油化工股份有限公司 | A kind of condensation pipe vibroshock and oscillation damping method |
| CN106402532A (en) * | 2016-11-10 | 2017-02-15 | 贵州黔北粮仓米业有限公司 | Pipeline connecting structure applied to air compressor |
| CN106402532B (en) * | 2016-11-10 | 2018-09-14 | 贵州黔北粮仓米业有限公司 | A kind of pipe connecting structure used for air compressor |
| CN109442110A (en) * | 2018-11-02 | 2019-03-08 | 山东科技大学 | A kind of device and its electrolyte filling method reducing lotion pipeline resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20211025 |
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| CF01 | Termination of patent right due to non-payment of annual fee |