CN103411467A - Low driving rotor with turbulence core and in heat exchange tube - Google Patents
Low driving rotor with turbulence core and in heat exchange tube Download PDFInfo
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- CN103411467A CN103411467A CN2013103348835A CN201310334883A CN103411467A CN 103411467 A CN103411467 A CN 103411467A CN 2013103348835 A CN2013103348835 A CN 2013103348835A CN 201310334883 A CN201310334883 A CN 201310334883A CN 103411467 A CN103411467 A CN 103411467A
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Abstract
The invention relates to a low driving rotor with a turbulence core and in a heat exchange tube. The rotor is mainly composed of a hollow shaft, helical blades and the turbulence core, the outer diameter of each helical blade is smaller than the inner diameter of the heat exchange tube, the helical blades are smooth in surface, provided with hollow structures respectively and helically shaped around the hollow shaft, and the turbulence core is arranged in the hollow portions of the helical blades and consists of a plurality of turbulence strips distributed around the hollow shaft. The edge, firstly contacting with water flow, of the helical blades is chamfered or filleted; upstream faces of the blades drive the rotor to rotate under the action of fluid driving, fluid is enabled to generate centrifugal movement and is thrown to the wall of the heat exchange tube, radial flow of the heat transfer fluid is enhanced, and impacts on a laminar boundary layer of the fluid nearby the tube wall are generated to destroy the laminar boundary layer of the fluid; the turbulence core rotates with the blades, when small resistance is increased, turbulence is performed on center fluid in the tube to enable the center fluid to be replaced fully, and further effects of scale prevention, descaling and strengthened heat transfer are realized.
Description
Technical field
The present invention relates to a kind of interior inserted component that is applied to augmentation of heat transfer and antifouling scrubbing in heat exchanger tube in the equipment such as shell-and-tube heat exchanger, heat exchange reactor, be particularly related to and a kind ofly take the heat exchanger tube internal heat transfer fluid and be power, realize the low rotor that drives of band flow-disturbing core in the heat exchanger tube of low-energy-consumption high-efficiency of cleaning and heat-transfer enhancing function.
Background technology
Energy-saving and emission-reduction are the key technologies that the whole world is all paid much attention to, in various fields such as oil, chemical industry, thermoelectricity, nuclear power, metallurgy, light industry, aviation and boats and ships vehicles, all to be applied to many heat exchangers, what wherein be most widely used is shell-and-tube heat exchanger, but ubiquity deposition dirt in these heat exchanger tube inwalls, cause fluid transporting resistance in pipeline to increase, meeting blocking pipe when serious, heat transfer property greatly descends simultaneously; In heat exchanger tube, dirt can seriously reduce heat transfer efficiency, cause great energy waste, meanwhile dirt generally has corrosivity, tube wall is corrosion therefore, if fluid leakage can cause major safety risks, therefore traditional treating method is forced to exactly take stop production and cleans, and has so not only stopped over the manufacturing schedule of factory, also needs simultaneously to pay expensive cleaning charge and uses.In order to address these problems better, people study on-line automatic augmentation of heat transfer that employing do not stop production and various ways and the device of descaling and antiscaling always.Many antiscaling, descaling method and apparatus have appearred in recent years, one of them utilizes fluid to promote the method that the spiral band rotation can realize online automatic desludging, Chinese patent application number is: ZL95236063. 2, patent name is the innovation and creation of " cleaning device of descaling and antiscaling in heat-transfer pipe ", the technical scheme of these innovation and creation consists of the tie be equipped with in heat exchanger tube with heat exchanger tube cardinal principle equal length, the radial dimension of tie is less than the internal diameter of heat exchanger tube, place is provided with the axial restraint frame at the heat exchanger tube inlet, there is inlet opening the position, intermediate portion, the head of axial restraint frame has an axis hole, bearing pin is housed in it, the bearing pin afterbody is connected with tie, denomination of invention is " the spiral enhanced heat exchange of dual turbulent and automatic descaling apparatus ", the Chinese patent application publication number is CN1424554, this device is as augmentation of heat transfer and automatic desludging thereof, include spiral band, fixed mount, spiral band is arranged in helix tube, utilizes by the heat exchanger tube inner fluid and flows and drive the spiral band rotation.Because spiral band is a whole band, heat exchanger tube, straight not after processing is installed, can produce inhomogeneous gap between spiral band and heat exchanger tube inwall, and the scale removal effect of twisted strip is little and inhomogeneous like this, and descale effect is undesirable.In spiral band method apparatus for eliminating sludge, spiral band is all single-ended fixing, and the other end freely swings, and the radial dimension of twisted strip is less than the internal diameter of heat-transfer pipe.In sum, spiral band mainly contains following shortcoming: (1) tie is an integral body, heat-transfer pipe is directly swiped, and damage heat exchanger tube inwall; (2) promote tie during Fluid Flow in A and rotate and need larger driving moment, consume more fluid dynamic energy; (3) service life of the bearing of single-ended fixedly use is short; (4) the field cooperative reinforcing heat-transfer effect of tie generation is not remarkable.It is CN101769697 that the Chinese patent application publication number is arranged again afterwards, denomination of invention is the patent of " tube pull rod connecting twisted plate type self-centering cleaning and descaling component ", this device is to consist of twisted sheet, center, pull bar and connection reinforcement rib, wherein the cross section of pull bar to be shaped as part circular or circular or triangle or part oval or trapezoidal; On pull bar, be provided with projection to strengthen cleaning and descaling and enhanced heat exchange effect; The external diameter of its cleaning and descaling component is than the little 0.5 ~ 2mm of heat exchanger tube internal diameter.This device has the function of on-line automatic antiscaling, descaling and augmentation of heat transfer, and the suffered resistance of fluid is less, and it is little that element rotates required driving force.But shortcoming is this element while in heat exchanger tube, working, more obvious near the flow-disturbing effect of fluid tube wall, because intermediate portion is hollow out, therefore to managing interior core flow flow-disturbing effect not obvious, heat transfer effect has much room for improvement.
Summary of the invention
The objective of the invention is to design a kind of rotor of new construction, in the middle of the blade of this rotor, engraved structure is set, openwork part is equipped with the flow-disturbing core, and this construction rotor also has the effect of antiscaling, descaling when improving the heat exchanger tube heat transfer property, reducing resistance.
For achieving the above object, the technical solution used in the present invention is: the low rotor that drives of band flow-disturbing core in heat exchanger tube, mainly by hollow shaft, helical blade and flow-disturbing core, formed, the helical blade external diameter is less than the heat exchanger tube internal diameter, helical blade surface is smooth and be provided with engraved structure, helical blade around hollow shaft in the shape of a spiral, and the openwork part of helical blade is provided with the flow-disturbing core, the seamed edge that helical blade contacts with current at first carries out bevelling or rounding, and the flow-disturbing core is comprised of a plurality of trouble flow strip that distribute around hollow shaft.By change with helical blade along the axial helical angle of hollow shaft, axial length, change the turning moment of fluid to rotor along hollow shaft height radially, helical blade and flow-disturbing core will be convenient to the installation of rotor in heat exchanger tube in the combination fixed form on hollow shaft.When heat-transfer fluid flows through helical blade, can produce axial force to rotor, heat-transfer fluid is mobile changes direction of flow thereby helical blade hinders, form mixed flow, the flow-disturbing core rotates along with the rotation of blade, to managing interior core flow, carry out flow-disturbing, core flow is replaced fully, and the resistance produced by the flow-disturbing core is less; The upstream face of blade is under the fluid impetus, promoting whole rotor rotates, having strengthened the tangential of heat-transfer fluid flows, thereby reach augmentation of heat transfer and stop the formation of dirt and the purpose of deposition, helical blade is in rotation process simultaneously, can make heat-transfer fluid produce centrifugal motion and get rid of to the heat exchanger tube tube wall, not only strengthened the Radial Flow of heat-transfer fluid, also near the laminar boundary layer of heat-transfer fluid tube wall produced to impact, thereby destroy the laminar boundary layer of heat-transfer fluid, further realize the effect of antiscaling, descaling and augmentation of heat transfer.Can change its degree of flow-disturbing to core flow by the degree of crook that changes trouble flow strip, also can, by changing helical blade along the axial helical angle of hollow shaft, axial length, change the turning moment of fluid to rotor along hollow shaft height and tail-rotor shape radially, make rotor rotating flow in heat exchanger tube smooth.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, along the equally distributed helical blade number of hollow shaft circumferencial direction be two, three or more.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, the hollow shaft of rotor is comprised of two sections, three sections or multistage, and the number of corresponding flow-disturbing core can be one, two or more.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, the flow-disturbing core of rotor is comprised of trouble flow strip, its two ends are positioned on hollow shaft or blade, its number can be four, six, eight or a plurality of, trouble flow strip can distribute symmetrically around hollow shaft, also can near blade, distribute by comparatively dense, its shape can be arc, waveform, spirality etc.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, for prevent rotor in rotation process along the rotating shaft axial float, the hollow shaft two ends of rotor are provided with coaxial configuration, the coaxial configuration head and the tail combination of two adjacent rotor, realized the axial location between rotor.The hollow shaft coaxial configuration of rotor can be ball-and-socket mode, circular cone mode, buckle mode or universal joint mode.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, its hollow shaft cross sectional shape is open circles taper, hollow cylinder, hollow nodal figure or hollow many prismatics.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, the rotor whole string that can join end to end is threaded onto and connects on axis, and connecting axis can be the pole of rigidity, can be also flexible tightrope; Also can be divided into identical or different some groups of rotor quantity by locating part, rotor is evenly rotated.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, blade, flow-disturbing core and hollow shaft can be by macromolecular material, polymer-based composite, metal or ceramic material.
The low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention, the degree of crook of the parameters such as the radial height of rotor helical-screw blade, axial length, lead angle and trouble flow strip, can in conjunction with manufacture, be processed into and originally determine according to the intensity of the working condition such as velocity of medium and rotor self in heat exchanger tube internal diameter, pipe, wearability, between adjacent rotor, can take synchronous rotary or independent rotational structure.
The invention has the beneficial effects as follows: the rotor of 1, inventing is provided with the flow-disturbing cored structure at the blade openwork part, can under the less prerequisite of flow resistance increase, increase the turbulence intensity of core flow in pipe, make to manage interior core flow and replaced fully, thereby improve heat conduction reinforced ability; 2, in the middle of the helical blade of rotor, engraved structure is set, can effectively reduces like this rotor and rotate needed driving force, simultaneously the attenuate boundary layer is not had a significant impact; 3, the helical blade of rotor in rotary course except causing heat-transfer fluid around the circular motion of central axis, also caused the centrifugal motion of fluid, washed away heat exchanger tube inwall wall, thereby reduced the possibility of dirt in rotor surface and heat exchanger tube inwall deposition, strengthened the ability taken out stains of rotor.
The accompanying drawing explanation
Fig. 1 is low rotor---the front view of two blade rotors that drives of band flow-disturbing core in heat exchanger tube of the present invention.
Fig. 2 is the low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention---two blade rotors wait axle figure.
Fig. 3 is the low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention---three blade rotors wait axle figure.
Fig. 4 is the low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention---dual turbulent core rotor wait axle figure.
Fig. 5 is the low rotor that drives of band flow-disturbing core in heat exchanger tube of the present invention---waveform flow-disturbing core rotor wait axle figure.
Fig. 6 is with the low mounting structure schematic diagram that drives rotor of flow-disturbing core in heat exchanger tube of the present invention.
In figure, 1-helical blade, 2-flow-disturbing core, 3-hollow shaft, 4-ball-and-socket boss, 5-ball-and-socket concave station, 6-suspension member, 7-locating part, 8-heat exchanger tube, 9-rotating shaft.
The specific embodiment
As shown in Figure 6, in a kind of heat exchanger tube the present invention relates to, hang down with the flow-disturbing core a kind of implementation method that drives rotor, strengthening and heat transferring device comprises rotor, suspension member 6, heat exchanger tube 8 and rotating shaft 9, several rotors are cascaded by rotating shaft 9, suspension member 6 is fixed on heat exchanger tube 8 two ends, the two ends of rotating shaft 9 are separately fixed on suspension member 6, rotor of the present invention is mainly by hollow shaft 3, helical blade 1 and flow-disturbing core 2 form, the external diameter of helical blade 1 is less than the internal diameter of heat exchanger tube 8, helical blade 1 smooth surface and be provided with engraved structure, helical blade 1 around hollow shaft 3 in the shape of a spiral, and the openwork part of helical blade 1 is provided with flow-disturbing core 2, flow-disturbing core 2 is comprised of a plurality of trouble flow strip that distribute around hollow shaft 3, the helical blade 1 of some and flow-disturbing core 2 are fixed on hollow shaft 3 surfaces, on hollow shaft 3, also have ball-and-socket boss 4 and ball-and-socket concave station 5.In two adjacent rotor, thereby the ball-and-socket boss 4 of hollow shaft 3 heads of a rotor and the ball-and-socket concave station 5 of another rotor afterbody combine to play and are connected and adjust the effect that makes it coaxial, this structure is also a kind of flexible connecting structure that can adapt to heat exchanger tube 8 knees, this structure is except can adopting the ball-and-socket mode, can also adopt circular cone mode, buckle mode and direction joint mode, can also adopt planar structure in the less demanding situation of axiality.
As shown in Figures 1 to 5, hollow shaft 3 cross sectional shapes of rotor are the open circles taper; Fig. 1 is that the number of blade is two the front view with the low driving of flow-disturbing core rotor, and two helical blades 1 and flow-disturbing core 2 are arranged on the hollow shaft 3 of rotor, and helical blade 1 is symmetrical, and trouble flow strip 9 is uniformly distributed around the shaft, on hollow shaft 3, has ball-and-socket boss 4, ball-and-socket concave station 5; Fig. 2 is that the number of blade is two the figure of the axle such as grade with the low driving of flow-disturbing core rotor, Fig. 3 is that the number of blade is three the figure of the axle such as grade with the low driving of flow-disturbing core rotor, Fig. 4 be hollow shaft divide three sections, flow-disturbing core number be two with the flow-disturbing core low drive rotor etc. axle figure, Fig. 5 be the trouble flow strip shape be wave with the flow-disturbing core low drive rotor wait axle figure.
In the present invention, heat-transfer fluid in heat exchanger tube 8 can produce axial force and rotating torque to rotor in flow process, helical blade 1 changes direction of flow, form mixed flow, increase turbulent extent, flow-disturbing core 2 rotates under the drive of helical blade 1, carry out flow-disturbing to managing interior core flow, core flow is replaced fully, and the resistance produced by flow-disturbing core 2 is very little; Helical blade 1 in hollow shaft 3 on every side in the shape of a spiral, the fluid drive rotor rotates, the mixed flow of heat-transfer fluid self has also obtained reinforcement, thereby reach the purpose of augmentation of heat transfer and prevention dirt deposition, meanwhile, helical blade 1 is in rotation process, can make the part heat-transfer fluid produce centrifugal motion and get rid of to heat exchanger tube 8 internal faces along blade surface, strengthened the Radial Flow of heat-transfer fluid, laminar boundary layer near heat-transfer fluid tube wall produces impact, thereby destroy the laminar boundary layer of heat-transfer fluid, further realize the effect of antiscaling, descaling and augmentation of heat transfer.This kind form rotor can reduce the radial height of helical blade 1, also can under the condition that intensity allows, suitably increase the area of the middle openwork part of helical blade 1, can greatly reduce like this rotor and rotate required driving force, simultaneously the helical angle by changing helical blade 1, axial length, along hollow shaft radially height and the shape of tail-rotor change the rotating torque of heat-transfer fluid to rotor, guarantee the smoothness rotation of rotor, in addition, by the radial height that reduces helical blade 1 and the area that increases openwork part, can save material and processing cost.
Claims (7)
1. in heat exchanger tube, band flow-disturbing core hangs down the driving rotor, it is characterized in that: mainly by hollow shaft, helical blade and flow-disturbing core, formed, the helical blade external diameter is less than the heat exchanger tube internal diameter, helical blade surface is smooth and be provided with engraved structure, helical blade around hollow shaft in the shape of a spiral, the openwork part of helical blade is provided with the flow-disturbing core, and the seamed edge that helical blade contacts with current at first carries out bevelling or rounding, and the flow-disturbing core is comprised of a plurality of trouble flow strip that distribute around hollow shaft.
2. the low rotor that drives of band flow-disturbing core in heat exchanger tube according to claim 1 is characterized in that: described along the equally distributed helical blade number of hollow shaft circumferencial direction be two, three or more.
3. the low rotor that drives of band flow-disturbing core in heat exchanger tube according to claim 1 is characterized in that: the hollow shaft of described rotor is comprised of two sections, three sections or multistage, and the number of corresponding flow-disturbing core can be one, two or more.
4. in heat exchanger tube according to claim 1, band flow-disturbing core hangs down the driving rotor, it is characterized in that: the flow-disturbing core of described rotor is comprised of trouble flow strip, the trouble flow strip two ends are positioned on hollow shaft or blade, number can be four, six or eight, trouble flow strip can distribute symmetrically around hollow shaft, also can near blade, distribute by comparatively dense, shape can be arc, waveform, spirality etc.
5. in heat exchanger tube according to claim 1, band flow-disturbing core hangs down the driving rotor, it is characterized in that: the hollow shaft two ends of described rotor are provided with coaxial configuration, the hollow shaft two ends are provided with ball-and-socket mode, circular cone mode, buckle mode or universal joint mode coaxial configuration, and the hollow shaft afterbody of two adjacent rotors and the head of another hollow shaft combine.
6. in heat exchanger tube according to claim 1, band flow-disturbing core hangs down the driving rotor, it is characterized in that: described interior band flow-disturbing core is low to be driven the rotor whole string that can join end to end and is threaded onto and connects on axis, connecting axis can be the pole of rigidity, can be also flexible tightrope; Also can be divided into identical or different some groups of rotor quantity by locating part.
7. in heat exchanger tube according to claim 1, band flow-disturbing core hangs down the driving rotor, and it is characterized in that: the blade of described rotor, flow-disturbing core and hollow shaft are by macromolecular material, polymer-based composite, metal or ceramic material.
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| CN201310334883.5A CN103411467B (en) | 2013-08-02 | 2013-08-02 | Low driving rotor with turbulence core and in heat exchange tube |
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| CN201310334883.5A CN103411467B (en) | 2013-08-02 | 2013-08-02 | Low driving rotor with turbulence core and in heat exchange tube |
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| CN103411467A true CN103411467A (en) | 2013-11-27 |
| CN103411467B CN103411467B (en) | 2015-04-01 |
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Cited By (13)
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| CN103736410A (en) * | 2013-12-16 | 2014-04-23 | 北京化工大学 | Blade-carrying perforate spheroidicity dynamic mixer used for pipeline |
| CN104154806A (en) * | 2014-08-07 | 2014-11-19 | 北京化工大学 | Heat exchanging pipe inner heat transferring enhancing and scale-prevention device |
| CN105135933A (en) * | 2015-10-12 | 2015-12-09 | 郑州大学 | Shuttle-shaped heat transfer enhancement rotor in heat exchange tube |
| CN105973057A (en) * | 2016-06-27 | 2016-09-28 | 福建德兴节能科技有限公司 | Plug-in type turbulator, producing and mounting method thereof and usage thereof |
| CN109613074A (en) * | 2018-01-30 | 2019-04-12 | 天津大学 | Multiple-blade eddy flow split-phase capacitor moisture percentage measuring apparatus |
| CN110118506A (en) * | 2017-06-06 | 2019-08-13 | 株式会社电装 | Heat-exchange device |
| CN110806134A (en) * | 2019-11-18 | 2020-02-18 | 榆林学院 | Sawtooth shuttle-shaped fan inner member heat exchanger device and heat exchange system |
| CN112055682A (en) * | 2017-12-12 | 2020-12-08 | 威斯克航空有限责任公司 | Wave lift fan rotor |
| CN112985156A (en) * | 2021-02-25 | 2021-06-18 | 内蒙古工业大学 | Fluid transposition mixing plug-in unit, fluid transposition mixing plug-in and heat absorption pipe |
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| CN113865411A (en) * | 2021-09-18 | 2021-12-31 | 常州大学 | Turbulent flow anti-scaling device for heat exchanger and heat exchanger thereof |
| CN114575785A (en) * | 2022-05-06 | 2022-06-03 | 四川安硕石油工程技术服务有限公司 | Well head heating device for supercritical carbon dioxide fracturing of oil and gas well |
| CN117870218A (en) * | 2024-02-01 | 2024-04-12 | 广东捷邦节能设备制造有限公司 | Flooded evaporator with efficient heat exchange |
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| CN103736410B (en) * | 2013-12-16 | 2015-05-13 | 北京化工大学 | Blade-carrying perforate spheroidicity dynamic mixer used for pipeline |
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| CN105135933A (en) * | 2015-10-12 | 2015-12-09 | 郑州大学 | Shuttle-shaped heat transfer enhancement rotor in heat exchange tube |
| CN105973057A (en) * | 2016-06-27 | 2016-09-28 | 福建德兴节能科技有限公司 | Plug-in type turbulator, producing and mounting method thereof and usage thereof |
| CN105973057B (en) * | 2016-06-27 | 2018-07-06 | 福建德兴节能科技有限公司 | Plug-in type flow spoiler and its production, installation method and purposes |
| CN110118506A (en) * | 2017-06-06 | 2019-08-13 | 株式会社电装 | Heat-exchange device |
| CN112055682A (en) * | 2017-12-12 | 2020-12-08 | 威斯克航空有限责任公司 | Wave lift fan rotor |
| US11148783B2 (en) | 2017-12-12 | 2021-10-19 | Wisk Aero Llc | Corrugated lift fan rotor |
| CN109613074A (en) * | 2018-01-30 | 2019-04-12 | 天津大学 | Multiple-blade eddy flow split-phase capacitor moisture percentage measuring apparatus |
| CN110806134A (en) * | 2019-11-18 | 2020-02-18 | 榆林学院 | Sawtooth shuttle-shaped fan inner member heat exchanger device and heat exchange system |
| CN112985156A (en) * | 2021-02-25 | 2021-06-18 | 内蒙古工业大学 | Fluid transposition mixing plug-in unit, fluid transposition mixing plug-in and heat absorption pipe |
| CN112985156B (en) * | 2021-02-25 | 2022-06-10 | 内蒙古工业大学 | Fluid transposition mixing plug-in unit, fluid transposition mixing plug-in and heat absorption pipe |
| CN113108511A (en) * | 2021-05-06 | 2021-07-13 | 深圳市伟力低碳股份有限公司 | Supercooled water ice making device |
| CN113108511B (en) * | 2021-05-06 | 2022-07-01 | 深圳市伟力低碳股份有限公司 | Supercooled water ice-making device |
| CN113865411B (en) * | 2021-09-18 | 2023-12-15 | 常州大学 | Turbulent flow scale preventing device for heat exchanger and heat exchanger thereof |
| CN113865411A (en) * | 2021-09-18 | 2021-12-31 | 常州大学 | Turbulent flow anti-scaling device for heat exchanger and heat exchanger thereof |
| CN114575785A (en) * | 2022-05-06 | 2022-06-03 | 四川安硕石油工程技术服务有限公司 | Well head heating device for supercritical carbon dioxide fracturing of oil and gas well |
| CN114575785B (en) * | 2022-05-06 | 2022-07-26 | 四川安硕石油工程技术服务有限公司 | Wellhead heating device for supercritical carbon dioxide fracturing of oil and gas well |
| CN117870218A (en) * | 2024-02-01 | 2024-04-12 | 广东捷邦节能设备制造有限公司 | Flooded evaporator with efficient heat exchange |
| CN117870218B (en) * | 2024-02-01 | 2024-06-07 | 广东捷邦节能设备制造有限公司 | Flooded evaporator with efficient heat exchange |
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