CN101738129B - Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger - Google Patents
Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger Download PDFInfo
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- CN101738129B CN101738129B CN200910231170XA CN200910231170A CN101738129B CN 101738129 B CN101738129 B CN 101738129B CN 200910231170X A CN200910231170X A CN 200910231170XA CN 200910231170 A CN200910231170 A CN 200910231170A CN 101738129 B CN101738129 B CN 101738129B
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- pulsating flow
- heat exchanger
- tube bundle
- heat exchange
- elastic tube
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Abstract
The invention discloses a vibration inducing device for strengthening the heat exchange of an elastic tube bundle heat exchanger. The vibration inducing device may have the vibration type, frequency and amplitude which are required by a heat exchanger bundle, improves the heat exchange efficiency and avoids damage to the heat exchanger bundle due to fatigue. The vibration inducing device comprises a water inlet tube and a pulse flow tube, wherein the water inlet tube and the pulse flow tube are both connected with a tube valve; the pulse flow tube is provided with a water outlet corresponding to floating mass block of the elastic heat exchanger bundle one by one; and a pulse flow generator is arranged on the pulse flow tube and/or the water outlet.
Description
Technical field
The present invention relates to a kind of vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger.
Background technology
Shell-and-tube heat exchanger has very at industrial circles such as energy source and power, petrochemical industries to be used widely, and the enhanced heat exchange technology of heat exchanger is to energy-saving and cost-reducing significant.Wherein the passive facilitation heat transfer technology is current important research direction owing to not needing extraneous high-quality energy input to reach the purpose of enhanced heat exchange.
Utilizing flow-induced heat transfer element vibration realizing enhanced heat exchange is a kind of form of passive facilitation heat exchange; Can the strictness that convection cell in the heat exchanger is vibration induced prevent to change into effective utilization to vibration; The convection transfer rate of actuated element under low flow velocity significantly improved; And utilize vibration suppression heat transfer element surface dirt, and lower dirtiness resistance, realize compound intensified heat-transfer.
92106727.5) and " elastic tube bundle steam-water heat exchanging group " (application number: 94110563.6) propose a kind of plane elasticity tube bank heat transfer element Chinese invention patent " floating coil-heat tube two-stage heating vapour-water thermal exchanger " (application number:; Utilize flow-induced tube bank vibration to carry out enhanced heat exchange, this tube bank has two stiff ends and a unsteady quality end.Chinese invention patent " spatially spiral elasticity-intensified heat exchange tube bundle and bracing or strutting arrangement thereof " (application number: 200810015875.3) propose a kind of spatially spiral elasticity-intensified heat exchange tube bundle; Tube bank is divided into single-screw type and double helical form, and unsteady mass is arranged on the double helical form heat exchanger tube.The operation principle of foregoing invention is the horizontal heat-exchanging tube bundle that skims over of shell-side fluid, utilizes the different flowing velocities of different fluid medium and fluid, induces heat transfer element to realize needed vibration, realizes the designing requirement of the different vibration shapes to satisfy heat-exchanging tube bundle.Unsteady mass is the critical piece of flow-induced heat exchanger tube vibration, is the pith that influences the heat-exchanging tube bundle vibration shape, frequency and amplitude.
The shortcoming of said structure is at first after the heat exchanger manufacturing installs, and heat-exchanging tube bundle is definite fully, and housing inner fluid medium and flow velocity become the principal element that influences the heat-exchanging tube bundle vibration shape, frequency and amplitude.Medium and the desired vibration shape of flow velocity acquisition heat-exchanging tube bundle, frequency and amplitude through changing the housing inner fluid are difficult to.Secondly after the heat exchanger manufacturing installed, if fluid media (medium) or flow velocity change, then a kind of situation maybe be less because of the frequency and the amplitude of the vibration of flow-induced heat-exchanging tube bundle, do not have very good heat exchange effect; Another situation maybe be bigger because of the frequency and the amplitude of the vibration of flow-induced heat-exchanging tube bundle, and fatigue rupture can take place heat-exchanging tube bundle very soon.So how obtaining the desired vibration shape of heat-exchanging tube bundle, frequency and amplitude comparatively accurately and conveniently is one of difficult point problem of strengthening heat exchange of elastic tube bundle heat exchanger.
Summary of the invention
The present invention is for solving the problem that present flow-induced vibration elastic tube bundle heat exchanger exists; A kind of vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger is proposed; To obtain the desired vibration shape of heat-exchanging tube bundle, frequency and amplitude; Reach and both improve heat exchange efficiency, avoid the purpose of heat-exchanging tube bundle fatigue rupture again.
The object of the invention adopts following technical proposals to realize:
A kind of vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger, it comprises water inlet pipe and pulsating flow pipe, both all are connected with pipeline valve; On the pulsating flow pipe, be provided with and the unsteady mass of elasticity heat exchanger tube tube bank delivery port one to one mutually, the pulsating flow generating means is installed on the pulsating flow pipe and/or on the delivery port.
Said pulsating flow generating means comprises the end pulsating flow generator that is installed on the pulsating flow pipe and is installed in the delivery port place pulsating flow generator on each delivery port.
Said pulsating flow Guan Yiduan is fixed on the low head, and an end suspends.
The vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger of the present invention comprises pipeline valve, pulsating flow generator and pulsating flow pipe.Pipeline valve connects water inlet pipe and pulsating flow pipe, has on the pulsating flow pipe and elastic tube bundle mass delivery port one to one, and pulsating flow generator can be installed in the pulsating flow tube end respectively and perhaps be installed in the delivery port place.
Pulsating flow Guan Yiduan is fixed on the low head, and an end suspends, and the delivery port on the pulsating flow pipe is corresponding one by one with the elastic tube bundle mass, and pulsating fluid is flowed out by delivery port, impact elasticity tube bank mass.
During use; Through rotating pipeline valve; Control gets into the fluid flow and the flow velocity of pulsating flow pipe; Select suitable pulsating flow generator respectively for use at pulsating flow tube end or delivery port place, thereby the fluid driving frequency and the intensity at control pulsating flow pipe delivery port place make the elastic tube bundle vibration shape, frequency and amplitude vibration as requested.Reach the flow-induced heat exchange effect that both improves the elastic tube bundle heat exchanger, avoid the purpose of elastic tube bundle heat exchanger fatigue rupture again.
The invention has the beneficial effects as follows: it obtains the desired vibration shape of heat-exchanging tube bundle, frequency and amplitude, reaches and both improves heat exchange efficiency, avoids heat-exchanging tube bundle fatigue rupture the present invention all can use plane elasticity tube bank and spatial elastic tube bank again.
Description of drawings
Fig. 1 is the structural representation that pipeline valve connects water inlet pipe and pulsating flow pipe;
Fig. 2 is the pulsating flow tubular construction sketch map that pulsating flow generator is installed in the end;
Fig. 3 is the pulsating flow tubular construction sketch map that pulsating flow generator is installed at the delivery port place;
Fig. 4 is the structural representation that pulsating flow pipe shown in Figure 2 is applied to the elastic tube bundle heat exchanger;
Fig. 5 is the structural representation that pulsating flow pipe shown in Figure 3 is applied to the elastic tube bundle heat exchanger.
Wherein, 1. pulsating flow pipe, 2. end pulsating flow generator, 3. pipeline valve, 4. delivery port, 5. delivery port place pulsating flow generator, 6. water inlet pipe, 7. low head, mass, 9. elasticity heat exchanger tube 8. float.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment 1:
Among Fig. 1, Fig. 2 and Fig. 4, be used for the vibration inducing device of strengthening heat exchange of elastic tube bundle heat exchanger, it comprises water inlet pipe 6 and pulsating flow pipe 1, and both all are connected with pipeline valve 3; On pulsating flow pipe 1, be provided with and the unsteady mass 8 of elasticity heat exchanger tube 9 tube bank delivery port 4 one to one mutually, mounting end pulsating flow generator 2 on pulsating flow pipe 1.Pulsating flow pipe 1 one ends are fixed on the low head 7, and an end suspends.
Embodiment 2:
Among Fig. 1, Fig. 3 and Fig. 5, be used for the vibration inducing device of strengthening heat exchange of elastic tube bundle heat exchanger, it comprises water inlet pipe 6 and pulsating flow pipe 1, and both all are connected with pipeline valve 3; On pulsating flow pipe 1, be provided with and the unsteady mass 8 of elasticity heat exchanger tube 9 tube bank delivery port 4 one to one mutually, installation delivery port place pulsating flow generator 5 on each delivery port 4.Pulsating flow pipe 1 one ends are fixed on the low head 7, and an end suspends.
Embodiment 3:
In the present embodiment, difference mounting end pulsating flow generator 2 and delivery port place pulsating flow generator 5 on pulsating flow pipe 1 and its delivery port 4, all the other structures are identical with embodiment 2 with embodiment 1, repeat no more.
Claims (3)
1. a vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger is characterized in that, it comprises water inlet pipe and pulsating flow pipe, and both all are connected with pipeline valve; On the pulsating flow pipe, be provided with and the unsteady mass of elastic tube bundle delivery port one to one mutually, the pulsating flow generating means is installed in pulsating flow water inlet tube mouth end, perhaps is installed in pulsating flow pipe delivery port place.
2. the vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger as claimed in claim 1; It is characterized in that; Said pulsating flow generating means comprises two types; One type is the pulsating flow generator that is installed in pulsating flow water inlet tube mouth end, another kind of for being installed in the pulsating flow generator at each delivery port place of pulsating flow pipe.
3. according to claim 1 or claim 2 the vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger is characterized in that said pulsating flow water inlet tube mouth one end is fixed on the low head of elastic tube bundle heat exchanger, and the other end suspends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910231170XA CN101738129B (en) | 2009-12-10 | 2009-12-10 | Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910231170XA CN101738129B (en) | 2009-12-10 | 2009-12-10 | Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger |
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| Publication Number | Publication Date |
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| CN101738129A CN101738129A (en) | 2010-06-16 |
| CN101738129B true CN101738129B (en) | 2012-07-04 |
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| CN200910231170XA Expired - Fee Related CN101738129B (en) | 2009-12-10 | 2009-12-10 | Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135931A (en) * | 2015-09-22 | 2015-12-09 | 山东大学 | Uniform distribution type pulsating flow generating device for vibration induction of elastic tube bundles inside heat exchanger |
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| CN102636074B (en) * | 2012-04-19 | 2014-01-29 | 武汉工程大学 | Pulsating flow generating device and pulsation heat-transfer system |
| CN102878719B (en) * | 2012-10-12 | 2014-08-06 | 天津商业大学 | Lithium bromide absorbing refrigerating equipment with function of mechanical vibration to assist heat and mass transfer |
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2009
- 2009-12-10 CN CN200910231170XA patent/CN101738129B/en not_active Expired - Fee Related
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| CN105135931B (en) * | 2015-09-22 | 2017-08-25 | 山东大学 | The even distribution type pulsation flow generating apparatus vibration induced for elastic tube bundle in heat exchanger |
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| CN101738129A (en) | 2010-06-16 |
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