CN101303213A - High-efficiency heat transfer device with heavy dirt type helical flow path structure - Google Patents
High-efficiency heat transfer device with heavy dirt type helical flow path structure Download PDFInfo
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- CN101303213A CN101303213A CNA2007100349084A CN200710034908A CN101303213A CN 101303213 A CN101303213 A CN 101303213A CN A2007100349084 A CNA2007100349084 A CN A2007100349084A CN 200710034908 A CN200710034908 A CN 200710034908A CN 101303213 A CN101303213 A CN 101303213A
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Abstract
Disclosed is a heavy-fouling type high efficient heat-transfer device with a helical flow channel structure, which comprises a sewage heat exchanger that can be a serpentine type heat exchanger immerged in a clean water groove and also can be a jacketed heat exchanger with a serpentine pipe; the horizontal segments of the whole helical flow channel, a sand distributing pipe and a water inlet pipeline and a water return pipeline are provided with helical lines; the helical line is a convective heat transfer intensifying component when in normal running and a liquid rotary fluidization generator when cleaning the fouling; the evenness of the fouling cleaning of the upper half circle, the lower half circle, the inner half circle and outer half circle is realized when a sewage flow velocity is over 0.5m/s and the sedimentation of the particles does not happen and the blockage is avoided; the inner wall of the jacket is also a heat-transfer surface; a circulation groove for the fluidization cleaning of the particles is provided with a sand distributing pipe which can automatically control the concentration of the particles of the fluidization cleaning solution. Therefore, the sewage heat exchanger of the invention has high efficiency, small resistance, high reliability and simple operation and can be widely applied as the heat exchanger which is utilized as a cold and hot source.
Description
Technical field
The present invention relates to a kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure, relate to the heat conduction reinforced of helical flow path formula sewage heat exchanger and dirt on-line cleaning system.It is applicable to that incrustation scale in the helical flow path of helical flow path formula sewage heat exchanger of spiral chuck sewage heat exchanger and spiral coiled pipe sewage heat exchanger and other version cleans automatically and convection heat transfer' heat-transfer by convection is strengthened energy-conservation.
Background technology
Industrial furnace high-temperature flue gas, the Industrial Boiler flue gas that especially most widely used quantity is maximum, the utilization of adopting the smoke elimination of water spray process to wash the hot sewage energy that obtains is considered that hot sewage needs elder generation by the defecator clarification, and then is carried out heat exchange with the cold water that cleans.Existing technology (for example, self-cleaning high-temperature flue gas UTILIZATION OF VESIDUAL HEAT IN and cleaning system thereof, patent No. ZL200520051132.3, on December 13rd, 2006) will clarify with two processes of heat exchange and all in an equipment, finish, though compact conformation, but shortcoming is obvious: the one, and dirt on-line cleaning system is too complicated in the helical flow path, and operation is complicated too; The 2nd, dirt on-line cleaning system needs two circulating pumps in the helical flow path; The 3rd, the inboard growth of innermost chuck wall dirt can't clean later.
Utilize sewage-intermediary's water-to-water heat exchanger of the heat pump of sewage cold-hot source to adopt shell-and-tube heat exchanger (profit osmanthus orchid, Tang Zhiwei, the engineering of sewage source heat pump system is used, and is energy-conservation, 2006 (12) 45-50), incrustation scale has a strong impact on efficient in the heat-transfer pipe; If incrustation scale cleans the cost height automatically in the heat transfer tubulation.Utilize the heat exchanger of the heat pump of the sewage energy to adopt spiral coil heat exchanger (Li Xiaoming, Wang Lei, reclaim the use research of heat exchanger fouling performance in the sewage heat energy, chemical machinery, 2006,33 (6) 325-328), as if the Fouling Cleaning problem to heat-transfer area can only be alleviated by selecting material copper, and existing Fouling Cleaning technology nearly all portion is suitable for; If sewage is outside pipe, spiral coiled pipe outer wall growth dirt is difficult to later on clean; If sewage design is in spiral coiled pipe pipe, the interior Fouling Cleaning problem of the Fouling Cleaning problem in the spiral coiled pipe and the helical flow path of screw clamp cover heat exchanger is identical.
Summary of the invention
The present invention is directed to the problems referred to above that heat exchanger helical runner Fouling Cleaning exists, a kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure is proposed, not only heat conduction reinforced effective, just can be implemented in the line fluidization in helical flow path about effluent flow rate 0.5m/s cleans automatically, and the fluidization purging system is simplified greatly, expense is lower, reliability is higher, and the interior automatic cleaning of dirt and the convection heat transfer' heat-transfer by convection thereof of helical flow path that can be widely used in the helical flow path formula sewage heat exchanger of spiral chuck sewage heat exchanger and spiral coiled pipe sewage heat exchanger and other version strengthened energy-conservation.
Technical scheme of the present invention is: a kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure, form by sewage heat exchanger, helical flow path, helical structure spare, helix, particle, circulating slot, triple valve, back with water inlet line, return piping etc.The version of sewage heat exchanger can be the spiral coil heat exchanger that is immersed in the Rinsing Area, also can be helix tube chuck heat exchanger.Helical structure spare can be spiral coiled pipe, spiral semicanal, also can be spiral plate.The shape of cross section of helical flow path can be circular, semicircle, rectangle, also can be other complicated shape.All be provided with helix in the horizontal segment pipe of whole, the back with water inlet line of sewage heat exchanger helical flow path, return piping and fluidization cleaning fluid delivery tube thereof.Helix pitch T is generally runner hydraulic diameter d
e(1.0～2.5) doubly.Helix is generally wire, also can be to mould the bag metal wire structure.The function of helix, the one, convection heat transfer' heat-transfer by convection is strengthened, and the 2nd, form the hydrocyclone fluidized of low flow velocity when cleaning, particle can deposition not stop up in the little helical flow path in helical flow path horizontal segment or inclination angle.Circulating slot is divided into two Room up and down, adopts communicating valve to connect.Last chamber is that particle precipitation separates the recovery space.The preparation chamber that following chamber is the fluidization cleaning fluid is equipped with the sand tube of joining that can control fluidization cleaning fluid particle concentration automatically.To be that the water that causes spurt hole to come out of the throat's decompression by venturi is husky mix and sucking back of Hui Shakong realized the operation principle of joining sand tube.Circulating slot is communicated with back with water inlet line, the return piping of sewage heat exchanger, and cleaning operation is realized by the switching of triple valve.
During usual the operation, the helix in the helical flow path is the reinforced element of convection heat transfer' heat-transfer by convection, can make the heat transfer coefficient of helical flow path one side improve 25%～50%.When dirt need clean in the helical flow path, sewage was joined sand tube through the fluidization cleaning fluid of chamber under the circulating slot earlier, is mixed with the fluidization cleaning fluid that contains the finite concentration particle automatically, and the helical flow path through back with water inlet line inflow sewage heat exchanger carries out heat exchange again.Though the particle density ratio sewage is big, can be spontaneously to the sedimentation of the bottom of flow channel cross-section, but helix is as hydrocyclone fluidized generator, the guide functions of helix makes drainage flow become the spiral linear flow, its circumferential component velocity can be pushed the particle that desire is sunk to top, therefore effluent flow rate only need just can realize the uniformity of the Fouling Cleaning of lower half on the runner, inside and outside half cycle about 0.5m/s, the particle deposition more can not take place stop up.Since to effluent flow rate require lowly, the resistance of sewage heat exchanger is also little, and the flow and the lift of sewage pump do not had extra demand.Fluidization is cleaned the particle that uses and is generally common river sand, also can be porcelain ball, Metal Ball, baton round, glueballs.
Description of drawings
Fig. 1 is a kind of spiral coil structure form schematic diagram of high-efficiency heat transfer device with heavy dirt type helical flow path structure.
Fig. 2 is a kind of schematic diagram of jacket structured version of high-efficiency heat transfer device with heavy dirt type helical flow path structure.
Fig. 3 joins the sand tube structural representation
Fig. 4 is the helical flow path structure schematic cross-section
The present invention is described in further detail below in conjunction with accompanying drawing for the specific embodiment.
Among the figure on 1 sewage heat exchanger, 2 helical flow paths, 3 helical structure spares, 4 helixes, 5 return pipings, 6 triple valves, 7 sand returning pipes, 8 circulating slots 9 11 times chambers of 10 particles, chamber, 12 communicating valves 13 join 18 spurt holes, 19 spiral coil heat exchangers, 20 helix tube jacket heat-exchangers, 21 circulating pumps, 22 clear water outputs, 23 sewage subsiders, 24 cleaning brush, 25 chuck floor, 26 chuck inwall, 27 clear water imports, 28 sewage induction pipes, 29 rotations of the husky hole of sand tube 14 back with water inlet line 15 triple valves 16 times 17 throats 30 effluent outfalls, 31 spiral coiled pipes, 32 spiral semicanals, 33 spiral plates
A kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure shown in Figure 1 is made up of sewage heat exchanger 1, helical flow path 2, helical structure spare 3, particle 10, circulating slot 8, triple valve 6 and 15, back with water inlet line 14, return piping 5, helix 4 etc.The version of sewage heat exchanger 1 can be the spiral coil heat exchanger 18 that is immersed in the Rinsing Area, also can be helix tube chuck heat exchanger 20.Helical structure spare 3 can be spiral coiled pipe 31, spiral semicanal 32, also can be spiral plate 33.Spiral coiled pipe 31 is immersed in the Rinsing Area of sewage heat exchanger 1.The shape of cross section of helical flow path 2 can be circular, semicircle, rectangle, also can be other complicated shape.Circulating slot 8 is divided into chamber 9 and following chamber 11, adopts communicating valve 12 to connect.The space is reclaimed in last chamber 8 for particle precipitation separates.The chamber is prepared automatically for fluidization liquid in following chamber 11, be equipped with fluidization cleaning fluid particle concentration automatically control join sand tube 13.The structure for amplifying of joining sand tube 13 as shown in Figure 3, its operation principle, the water that relies on throat's 17 decompressions of venturi to cause spurt hole 18 to come out is husky to be mixed and returns that sucking back of husky hole 16 realize.Circulating slot 8 and join sand tube 13 and be connected with back with water inlet line 14, the return piping 5 of sewage heat exchanger 1, cleaning operation is realized by the switching of triple valve 6 and 15.In the horizontal segment pipe of whole helical flow path 2, back with water inlet line 14 and return piping 5, all be provided with helix 4, its function, the one, convection heat transfer' heat-transfer by convection is strengthened, the 2nd, form the hydrocyclone fluidized of low flow velocity when cleaning, particle 10 can deposition obstruction in the little helical flow path 2 in the horizontal segment of helical flow path 2 or inclination angle.The pitch T of helix 4 is generally runner hydraulic diameter d
e(1.0～2.5) doubly.Helix 4 is generally wire, also can be to mould the bag metal wire structure.The wire diameter d that makes helix 4 is more than 1mm, and its material generally is the stainless steel steel wire, also can be to mould Baogang's silk, mainly selects according to the corrosivity and the temperature of liquid in the helical flow path.The thickness of plastics covering of moulding Baogang's silk adopts the engineering plastics manufacturing that wearability is good, Shooting Technique is good in the scope of 0.5mm～5.0mm, considers that simultaneously the high low condition of temperature of the sewage in the helical flow path 2 is selected.
During usual the operation, the helixes 4 in the helical flow path 2 are reinforced elements of convection heat transfer' heat-transfer by convection, can make the film coefficient of heat transfer of helical flow path 2 one sides improve 25～%50%.When dirt need clean in the helical flow path 2, sewage is joined sand tube 13 through the fluidization cleaning fluid of 8 times chambers 1 of circulating slot earlier, automatically be mixed with the fluidization cleaning fluid that contains the finite concentration particle, the helical flow path 2 that flows into sewage heat exchanger 1 through back with water inlet line 14 carries out heat exchange again.Though particle 10 density ratio sewages are big, can be spontaneously to the sedimentation of the bottom of flow channel cross-section, but helix 4 is as hydrocyclone fluidized generator, the guide functions of helix 4 makes drainage flow become the spiral linear flow, its circumferential component velocity can be pushed the particle 10 that desire is sunk to the top, cross section, therefore effluent flow rate only need just can realize the uniformity of the Fouling Cleaning of lower half, inside and outside half cycle on the helical flow path 2 more than 0.5m/s, the particle deposition more can not take place stop up.Since to effluent flow rate require lowly, the resistance of sewage heat exchanger 1 is also little, and the flow and the lift of sewage pump do not had extra demand.Fluidization is cleaned the particle 10 that uses and is generally common river sand, also can be porcelain ball, Metal Ball, baton round, glueballs.
The version of a kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure shown in Figure 2 is helix tube chuck heat exchanger 20, with the difference of spiral coil heat exchanger 18 be 31 designs of spiral coiled pipe in the chuck layer 25 of sewage heat exchanger 1,25 li mobile clear water of chuck layer.Other difference is helical flow path 2 preceding in subsider 23 sedimentation separation of part solids being gone out earlier that sewage enters sewage heat exchanger 1, chuck inwall 26 is as heat-transfer area, the dirt of chuck inwall 26 inboards, can be very easily according to actual needs, periodically 29 rotation cleaning brush 24 are in time cleaned by rotation.
Claims (2)
1. high-efficiency heat transfer device with heavy dirt type helical flow path structure, form by sewage heat exchanger (1), helical flow path (2), helical structure spare (3), particle (10), circulating slot (8), triple valve (6,15), back with water inlet line (14), return piping (5) helix (4) etc., it is characterized in that: whole, the back with water inlet line (14) and the return piping (5) of sewage heat exchanger (1) helical flow path (2) and join in the horizontal segment pipe of sand tube (13) and all be provided with helix (4); Be connected by delivery tube (13), return piping (5), back with water inlet line (14) between particle (10) circulating slot (8) and the sewage heat exchanger (1); Circulating slot (8) is divided into chamber (9) and following chamber (11), adopts communicating valve (12) to connect; The space is reclaimed in last chamber (8) for particle precipitation separates; What following chamber (11) was equipped with preparation fluidization cleaning fluid joins sand tube (13), joins sand tube (13) and waits the part formation by throat (17), Hui Shakong (16), the spurt hole (18) of venturi.
2. according to a kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure of claim 1, it is characterized in that: the version of sewage heat exchanger (1) can be to be immersed in Rinsing Area inside spin coil heat exchanger (19), also can be helix tube chuck heat exchanger (20); Helical structure spare (3) generally is spiral coiled pipe (31), also can be spiral semicanal (32), spiral plate (33); The cross sectional shape of helical flow path (2) can be circular, semicircle, rectangle, also can be other complicated shape.
3 a kind of high-efficiency heat transfer device with heavy dirt type helical flow path structure according to claim 1, it is characterized in that: the chuck inwall (26) of helix tube chuck heat exchanger (20) is as heat-transfer area, the dirt that chuck inwall (26) is inboard can periodically rotate cleaning brush (24) to (29) by rotation and in time clean.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706184A (en) * | 2012-04-26 | 2012-10-03 | 南京威尔化工有限公司 | Immersive heat exchanger |
| CN104556414A (en) * | 2013-10-23 | 2015-04-29 | 洛阳蓝海实业有限公司 | Descaling device of circulating hot water system |
| CN104903674A (en) * | 2012-12-03 | 2015-09-09 | 通用电气医疗集团生物科学公司 | Temperature controlling surface and support structure |
| CN109300555A (en) * | 2018-11-14 | 2019-02-01 | 中国核电工程有限公司 | A kind of dry method reforming unit of hex to green salt |
| WO2019075594A1 (en) * | 2017-10-16 | 2019-04-25 | 施尽忠 | Heat recovery device and method in high-concentration salty wastewater treatment process |
| CN112799487A (en) * | 2021-01-21 | 2021-05-14 | 湖南电子科技职业学院 | Computer CPU self-heat-dissipation structure |
| CN112916535A (en) * | 2021-01-21 | 2021-06-08 | 湖南电子科技职业学院 | Computer heat abstractor |
-
2007
- 2007-05-11 CN CNA2007100349084A patent/CN101303213A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706184A (en) * | 2012-04-26 | 2012-10-03 | 南京威尔化工有限公司 | Immersive heat exchanger |
| CN104903674A (en) * | 2012-12-03 | 2015-09-09 | 通用电气医疗集团生物科学公司 | Temperature controlling surface and support structure |
| CN104556414A (en) * | 2013-10-23 | 2015-04-29 | 洛阳蓝海实业有限公司 | Descaling device of circulating hot water system |
| WO2019075594A1 (en) * | 2017-10-16 | 2019-04-25 | 施尽忠 | Heat recovery device and method in high-concentration salty wastewater treatment process |
| CN109300555A (en) * | 2018-11-14 | 2019-02-01 | 中国核电工程有限公司 | A kind of dry method reforming unit of hex to green salt |
| CN112799487A (en) * | 2021-01-21 | 2021-05-14 | 湖南电子科技职业学院 | Computer CPU self-heat-dissipation structure |
| CN112916535A (en) * | 2021-01-21 | 2021-06-08 | 湖南电子科技职业学院 | Computer heat abstractor |
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Open date: 20081112 |