CN101738129A - 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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- CN101738129A CN101738129A CN200910231170A CN200910231170A CN101738129A CN 101738129 A CN101738129 A CN 101738129A CN 200910231170 A CN200910231170 A CN 200910231170A CN 200910231170 A CN200910231170 A CN 200910231170A CN 101738129 A CN101738129 A CN 101738129A
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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, 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.Be difficult to by medium and the desired vibration shape of flow velocity acquisition heat-exchanging tube bundle, frequency and the amplitude that changes the housing inner fluid.Secondly after the heat exchanger manufacturing installed, if fluid media (medium) or flow velocity change, then a kind of situation may 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 may be bigger because of the frequency and the amplitude of the vibration of flow-induced heat-exchanging tube bundle, and heat-exchanging tube bundle can very fast generation fatigue rupture.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.
Purpose of the present 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 pulsation stream pipe, both all are connected with pipeline valve; Be provided with on pulsation stream pipe and the unsteady mass of elasticity heat exchanger tube tube bank delivery port one to one mutually, the pulsation flow generating apparatus is installed in pulsation stream pipe upward and/or on the delivery port.
Described pulsation flow generating apparatus comprises and being installed in the end pulsating flow generator on the pulsation stream pipe and being installed in delivery port place pulsating flow generator on each delivery port.
Described pulsation stream 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 pulsation stream pipe.Pipeline valve connects water inlet pipe and pulsation stream pipe, has on the pulsation stream pipe and elastic tube bundle mass delivery port one to one, and pulsating flow generator can be installed in pulsation stream tube end respectively or be installed in the delivery port place.
Pulsation stream Guan Yiduan is fixed on the low head, and an end suspends, and the delivery port on the pulsation stream 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, by rotating pipeline valve, control enters the fluid flow and the flow velocity of pulsation stream pipe, select suitable pulsating flow generator respectively for use at pulsation stream tube end or delivery port place, thereby the fluid driving frequency and the intensity at control pulsation stream 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 pulsation stream pipe;
Fig. 2 is the pulsation tube flowing structure schematic diagram that pulsating flow generator is installed in the end;
Fig. 3 is the pulsation tube flowing structure schematic diagram that pulsating flow generator is installed at the delivery port place;
Fig. 4 is the structural representation that pulsation stream pipe shown in Figure 2 is applied to the elastic tube bundle heat exchanger;
Fig. 5 is the structural representation that pulsation stream pipe shown in Figure 3 is applied to the elastic tube bundle heat exchanger.
Wherein, 1. pulsation stream 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
The present invention will be further described below in conjunction with accompanying drawing and embodiment.
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 pulsation stream pipe 1, and both all are connected with pipeline valve 3; On pulsation stream pipe 1, be provided with and the unsteady mass 8 of elasticity heat exchanger tube 9 tube banks delivery port 4 one to one mutually, manage mounting end pulsating flow generator 2 on 1 at pulsation stream.Pulsation stream 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 pulsation stream pipe 1, and both all are connected with pipeline valve 3; On pulsation stream pipe 1, be provided with and the unsteady mass 8 of elasticity heat exchanger tube 9 tube banks delivery port 4 one to one mutually, installation delivery port place pulsating flow generator 5 on each delivery port 4.Pulsation stream 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 pulsation stream 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 pulsation stream pipe, and both all are connected with pipeline valve; Be provided with on pulsation stream pipe and the unsteady mass of elasticity heat exchanger tube tube bank delivery port one to one mutually, the pulsation flow generating apparatus is installed in pulsation stream pipe upward and/or on the delivery port.
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 described pulsation flow generating apparatus comprises and being installed in the end pulsating flow generator on the pulsation stream pipe and being installed in delivery port place pulsating flow generator on each delivery port.
3. the vibration inducing device that is used for strengthening heat exchange of elastic tube bundle heat exchanger as claimed in claim 1 or 2 is characterized in that, described pulsation stream Guan Yiduan is fixed on the low head, and an end suspends.
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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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| 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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| CN101738129A true CN101738129A (en) | 2010-06-16 |
| CN101738129B 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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| CN102636074A (en) * | 2012-04-19 | 2012-08-15 | 武汉工程大学 | Pulsating flow generating device and pulsation heat-transfer system |
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- 2009-12-10 CN CN200910231170XA patent/CN101738129B/en not_active Expired - Fee Related
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