CN107462105A - Non- uniform heat exchange of heat pipe and auto-cleaning method are cleaned in waste gas residual heat recovery automatically - Google Patents
Non- uniform heat exchange of heat pipe and auto-cleaning method are cleaned in waste gas residual heat recovery automatically Download PDFInfo
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- CN107462105A CN107462105A CN201710718593.9A CN201710718593A CN107462105A CN 107462105 A CN107462105 A CN 107462105A CN 201710718593 A CN201710718593 A CN 201710718593A CN 107462105 A CN107462105 A CN 107462105A
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- heat exchanger
- heat
- exchanger shell
- waste gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of recovery of waste gas residual heat to clean non-uniform heat exchange of heat pipe and auto-cleaning method automatically.Including heat exchanger shell, heat pipe heat exchanging part and automatic cleaning assembly are installed in described heat exchanger shell, lower floor's heat passage and upper strata cold flow passage are divided into described heat exchanger shell；What is flowed in the cold flow passage of upper strata is normal temperature fresh air, and what is flowed in lower floor's heat passage is high temperature thermal finalization waste gas.High temperature thermal finalization waste gas passes to heat by central dividing plate and heat pipe the normal temperature fresh air of cold flow passage, completes the heat exchange of high temperature thermal finalization waste gas and fresh air.The present invention realizes the automatic cleaning of heat exchanger, effectively increases the operating efficiency of heat exchanger, reduce the job costs of enterprise by increasing automatic cleaning assembly and carrying out automatic cleaning control.Heat transfer efficiency of the present invention is high, and service life length, anti-clogging performance is good, and the thermal finalization waste gas residual heat especially suitable for printing and dyeing enterprise reclaims occasion.
Description
Technical field
The present invention relates to a kind of heat exchange of heat pipe, be particularly applied to the recovery of thermal finalization waste gas residual heat clean automatically it is non-uniform
Heat exchange of heat pipe and auto-cleaning method.
Technical background
As printing and dyeing big country, China still suffers from many deficiencies, such as high energy consumption in printing and dyeing equipment and technology, and blowdown is big etc. asks
Topic.Heat setting machine is the important equipment in dyeing process, its major function be the fabric after pre-treatment is carried out airflow drying,
The final finishings such as stentering forming work.By thermal finalization, it is irregular to be effectively improved the breadth occurred after fabric pretreatment, weft yarn tilting
Phenomena such as, improve the mechanical performance and product comfort of fabric.But heat setting machine can produce substantial amounts of high-temp waste gas at work,
Directly discharge will cause substantial amounts of energy waste.Therefore, returned if the high-temp waste gas discharged when working heat setting machine carries out waste heat
Receive, it is possible to effectively reduce the energy consumption of dyeing, reduce production cost.A kind of effective method is to high temperature using heat exchanger
Waste gas of printing and dyeing carries out waste heat recovery.At present, heat exchanger technology comparative maturity, the heat exchanger of in the market are broadly divided into plate-type heat-exchange
Device, shell heat exchanger, heat-pipe heat exchanger etc..But due to including the volatile matter of printing and dyeing assistant and solvent in thermal finalization high-temp waste gas
And condensate, also containing tiny fabric fibre and dust.These impurity are easy to be attached to pipe surface, reduce the work of heat exchanger
Make efficiency, heat exchanger can be also blocked when serious, causes heat exchanger failure.Therefore, the design of thermal finalization heat recovery heat exchanger with
Optimization also needs to consider the problem of runner blocks.
For heat recovery heat exchanger of printing and dyeing, Chinese invention patent（CN 104075615A）A kind of shell-and-tube is disclosed to change
Hot device, the solid greasy dirt of flow area is mechanically removed, cleaner plate and power leading screw are assembled together, cleaner plate can
Moved along leading screw in heat exchanger flow area, scrape the purpose that milling solid greasy dirt reaches cleaning.The heat exchanger can be realized to through-flow
The cleaning function of passage, but fail to realize and cleaning function is automatically controlled.
Chinese invention patent（CN 103424029A）A kind of shell-and-tube heat exchanger is disclosed, is applied particularly to PET production
Process, cleaned using the tiny polyester fiber inside chemical method heat exchanging device.The principle of use is three under hot conditions
Glycol can dissolve terylene.The cleaning performance of invention is preferable, but time loss is long, and can not realize automatically controlling for cleaning.
Heat exchanger generally existing heat exchange efficiency at present applied to the recovery of thermal finalization waste gas residual heat is low, thermal finalization exhaust gas flow path
The problem of easily blocking, this all limits a wide range of popularization of the heat exchanger of thermal finalization waste gas residual heat recovery, therefore, it is necessary to propose
A kind of heat exchange efficiency is high, the heat exchanger cleaned automatically to thermal finalization exhaust gas flow path foreign-matter contamination.
The content of the invention
It is an object of the invention to provide a kind of recovery of waste gas residual heat to clean non-uniform heat exchange of heat pipe and automatic clear automatically
Washing method.The present invention realizes the automatic cleaning of heat exchanger by increasing automatic cleaning assembly and carrying out automatic cleaning control.Pass through
The greasy dirt degree of adhesion of degree of congestion in runner and tube surface is analyzed, and thermal finalization exhaust steam passage impurity is polluted
Thing is cleaned automatically, can effectively improve the heat exchange efficiency of heat exchanger, and prevents heat exchanger from blocking.Moreover, the heat pipe of the present invention
Using non-uniform arrangement, fluid more effectively contacts with heat pipe, effectively improves the heat exchange efficiency of heat exchanger.This heat exchanger efficiency is high,
Service life is grown, and anti-clogging performance is good, and effective recovery of thermal finalization waste gas residual heat can be achieved, effectively reduce the work of enterprise into
This, the thermal finalization waste gas residual heat especially suitable for printing and dyeing enterprise reclaims occasion.
The technical solution adopted by the present invention is：
Non- uniform heat exchange of heat pipe, including heat exchanger shell, described heat exchanger shell are cleaned in a kind of waste gas residual heat recovery automatically
Heat pipe heat exchanging part and automatic cleaning assembly are inside installed；Wherein：
Described heat pipe heat exchanging part be arranged on heat exchanger shell in, and will be divided into inside heat exchanger shell mutually it is unmixed under
Layer heat passage and upper strata cold flow passage；The heat pipe heat exchanging component includes central dividing plate, is offered on the central dividing plate non-
The through hole of uniform array structure arrangement, it is inserted vertically on the through hole of described non-uniform array structure arrangement to be provided with and non- structures the formation
The heat pipe of array structure arrangement, and evaporator section in lower floor's heat passage and cold positioned at upper strata is separated into by the central dividing plate
The condensation segment of circulation road；
Thermal finalization exhaust gas inlet is offered respectively on the two side of the described heat exchanger shell positioned at lower floor's heat passage position
With thermal finalization waste gas outlet, and described thermal finalization exhaust gas inlet and thermal finalization waste gas outlet is concentric opens up；Described is located at
Fresh inlet and fresh air outlet are offered on the two side of the heat exchanger shell of upper strata cold flow channel position respectively, and it is described new
Wind inlet and fresh air export concentric open up；The thermal finalization exhaust gas inlet, fresh inlet are located at the homonymy of heat exchanger shell, institute
State thermal finalization waste gas outlet, fresh air outlet is located at the homonymy of heat exchanger shell；Described heat exchanger shell inner bottom surface center
Circular groove is offered, the center of described circular groove offers central circular through hole；Described central circular through hole
The first circumferential manhole is uniformly offered on the circular groove in outside；
Automatic cleaning assembly is installed on the circular groove of described heat exchanger shell inner bottom surface；Described automatic cleaning assembly bag
Include movable cleaning part, sealing gasket and fixing nut；Described movable cleaning part includes the disk being assemblied on circular groove, described
Disk on uniformly offer the second circumferential manhole with the first circumferential manhole position correspondence；In described disk 18
Heart position is provided with and the first stepper motor output shaft is flexible is connected and can be through the cylinder of central circular through hole, outside cylinder
Surface Machining has screw thread, and described fixing nut is threaded to screw togather with cylindrical outer surface to be connected, described fixing nut
Also it is connected with the second stepper motor output shaft；Sealing gasket, described sealing gasket are installed between described circular groove and disk
Center offers the through hole passed through for cylinder；Uniformly offered on described sealing gasket and the first circumferential manhole
3rd circumferential manhole of position correspondence.
The diameter of the central circular through hole of described heat exchanger shell bottom center position is more than the first circumferential manhole
Diameter.
The diameter of the disk of described movable cleaning part is less than the diameter of heat exchanger shell bottom surface circular groove, the disk
Height be less than heat exchanger shell bottom surface circular groove depth；Described cylinder diameter is less than heat exchanger shell bottom center
The diameter of manhole, described cylinder length are more than the depth of the central circular through hole on the circular groove of heat exchanger shell bottom surface
Degree.
The aperture of the first circumferential manhole on the circular groove of described heat exchanger shell bottom center position and work
The aperture of second circumferential manhole on the disk of dynamic cleaning part, the aperture of the 3rd circumferential manhole on sealing gasket are homogeneous
Together.
Described heat exchanger shell is connected with central dividing plate using welding manner；And described heat exchanger shell is aluminium alloy
Heat exchanger shell.
Described thermal finalization exhaust gas inlet, fresh inlet, thermal finalization waste gas outlet, fresh air exit are separately installed with thermoelectricity
Even summation pressure sensor；Described pressure sensor and thermocouple is connected with signal processing apparatus respectively, described signal transacting
Device is connected with microprocessor, described microprocessor by signal processing apparatus respectively with the first stepper motor, the second stepping
Motor is connected with hydraulic pump；First stepper motor is connected with the cylinder of movable cleaning part；The second described stepper motor
It is connected with fixing nut；The hydraulic pump 26 is connected with cleaning fluid bottle.
The auto-cleaning method of non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery automatically, comprises the following steps：
Before heat exchanger start-up operation, on the second circumferential manhole and heat exchanger shell bottom surface on the disk of the movable cleaning part
The position of the first circumferential manhole stagger and runner can not be formed；When the fixing nut is initial and cylindrical outer surface
Screw thread is engaged, and is tightened on the bottom surface of heat exchanger shell, and the bottom surface of the disk of movable cleaning part and heat exchanger shell is compressed,
Sealing is realized in the case where not requiring the working condition of cleaning；
When heat exchanger works, measured respectively between thermal finalization exhaust gas inlet and thermal finalization waste gas outlet using the thermocouple
Temperature difference, the temperature difference between fresh inlet and fresh air outlet；Thermal finalization waste gas is measured respectively using the pressure sensor to enter
Pressure differential mouthful between thermal finalization waste gas outlet, the pressure differential between fresh inlet and fresh air outlet, and by pressure difference signal and
Temperature signal passes to microprocessor；After microprocessor obtains temperature difference and differential pressure signal, carry out calculating processing, and with it is advance
The temperature difference standard value of setting is analyzed compared with pressure differential standard value；When actual temperature difference is less than minimum temperature difference standard
When value or actual pressure difference are more than maximum pressure differential standard value, the microprocessor sends to the second stepper motor and performs letter
Number, the second stepper motor rotates, and unscrews fixing nut, and the cylinder of drive activity cleaning part rises；The microprocessor is to
Two stepping motor sends execution signal, and the second stepper motor rotates, and the cylinder of drive activity cleaning part rotates；Make movable cleaning
Second circumferential manhole of the disk of part and the 3rd on the first circumferential manhole on heat exchanger shell bottom surface, sealing gasket
The aligned in position of circumferential manhole forms runner；The microprocessor is sent to hydraulic pump simultaneously performs order, and hydraulic pump opens
Dynamic, it is logical that cleaning fluid bottle conveys the first circumferential circle that the cleaning fluid filled in it is flowed through after hydraulic pump on heat exchanger shell bottom surface
Lower floor's heat passage is cleaned after second circumferential manhole of hole and movable cleaning part, the foreign-matter contamination washed down
With thermal finalization waste gas outlet outflow heat exchanger housing；
While cleaning, the microprocessor persistently receives thermocouple and pressure sensor transmission comes temperature difference and pressure differential
Signal, and compared with the standard value of setting, when actual temperature difference is more than maximum temperature difference standard value and actual pressure is poor
When value is less than minimum pressure differential standard value, the microprocessor sends halt instruction to hydraulic pump, and hydraulic pump is stopped；It is described
Microprocessor sends execution signal to the first stepper motor, and the first stepper motor rotates, and the cylinder of drive activity cleaning part turns
It is dynamic, make the second circumferential manhole on the disk of movable cleaning part and the first circumferential manhole on heat exchanger shell bottom surface
Position, which is staggered, can not form runner；Meanwhile the microprocessor sends execution signal, the second stepper motor to the second stepper motor
Rotate, tighten fixing nut, the cylinder of drive activity cleaning part declines, by the disk of movable cleaning part and heat exchanger shell
Bottom surface compresses, and realizes sealing.
Beneficial effects of the present invention：
First, the present invention adds auto-cleaning structure thereof in heat exchanger, by being monitored to thermal finalization exhaust gas flow path and clearly
Wash, the heat transfer efficiency of heat exchanger can be effectively improved, reduce degree of congestion of the thermal finalization waste gas to lower floor's heat passage.Secondly, originally
Invention cleans non-uniform heat exchange of heat pipe and auto-cleaning method automatically by a kind of printing and dyeing thermal finalization waste gas residual heat recovery of proposition,
The automatic cleaning of heat exchanger can be achieved.This can saves many artificial unloading's washing and cleaning operation times.Therefore, auto-cleaning structure thereof
Setting can effectively increase the operating efficiency of heat exchanger, reduce entreprise cost.And the heat pipe of the present invention is structured the formation using non-
Array structure is arranged.It is distributed by improving heat pipe, contact of the heat exchanging fluid with heat pipe is more full and uniform, further increases heat exchange
Efficiency.
Specific brief description of the drawings
Fig. 1 is the assembling schematic diagram of the present invention；
Fig. 2 is Fig. 1 external structure schematic diagram；
Fig. 3 is the structural representation of heat exchanger shell inner bottom surface in Fig. 1；
Fig. 4 is structural representation when central dividing plate is connected with heat pipe in Fig. 1；
Fig. 5 is the fundamental diagram of heat pipe heat exchanging part and automatic cleaning assembly in Fig. 1；
Fig. 6 is the structural representation of central dividing plate in Fig. 5；
Fig. 7 is the scheme of installation between activity cleaning part, sealing gasket and heat exchanger shell in Fig. 5；
Fig. 8 is the structural representation of activity cleaning part in Fig. 5；
Fig. 9 hardware block diagrams of the present invention；
Heat exchanger control flow block diagram in Figure 10 present invention.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples, a kind of printing and dyeing thermal finalization described in the present embodiment
Non- uniform heat exchange of heat pipe is cleaned in waste gas residual heat recovery automatically, and as shown in figures 1-8, a kind of waste gas residual heat recovery is cleaned non-equal automatically
Cloth heat exchange of heat pipe, including heat exchanger shell 1, heat pipe heat exchanging part 2 and automatic cleaning are installed in described heat exchanger shell 1
Component 3；Wherein：
Described heat pipe heat exchanging part 2 is arranged in heat exchanger shell 1, and will be divided into inside heat exchanger shell 1 and do not mixed mutually
Lower floor's heat passage 11 and upper strata cold flow passage 12；The heat pipe heat exchanging component 2 includes central dividing plate 14, the central dividing plate
The through hole of non-uniform array structure arrangement is offered on 14, peace is inserted vertically on the through hole of described non-uniform array structure arrangement
Heat pipe 13 equipped with non-uniform array structure arrangement, and be separated into by the central dividing plate 14 in lower floor's heat passage 11
Evaporator section and the condensation segment positioned at upper strata cold flow passage 12；
Thermal finalization waste gas is offered respectively on the two side of the described heat exchanger shell 1 positioned at the position of lower floor's heat passage 11 to enter
Mouthfuls 4 and thermal finalization waste gas outlet 6, and described thermal finalization exhaust gas inlet 4 and thermal finalization waste gas outlet 6 is concentric opens up；It is described
The heat exchanger shell 1 put positioned at upper strata cold flow Channel 12-Bit two side on offer fresh inlet 5 and fresh air outlet respectively
7, and described fresh inlet 5 and fresh air outlet 7 concentric open up；The thermal finalization exhaust gas inlet 4, fresh inlet 5, which are located at, to be changed
The homonymy of hot device housing 1, the thermal finalization waste gas outlet 6, fresh air outlet 7 are located at the homonymy of heat exchanger shell 1；Described heat exchange
The inner bottom surface center of device housing 1 offers circular groove, and the center of described circular groove offers central circular and led to
Hole 9；The first circumferential manhole 10 is uniformly offered on the circular groove in the described outside of central circular through hole 9；
Automatic cleaning assembly 3 is installed on the circular groove of the described inner bottom surface of heat exchanger shell 1；Described automatic cleaning assembly
3 include movable cleaning part 15, sealing gasket 16 and fixing nut 17；Described movable cleaning part 15 includes being arranged on circular groove
Disk 18, uniformly offer on described disk 18 with it is the second of the first circumferential position correspondence of manhole 10 circumferential circular logical
Hole 19；The described center of disk 18 is provided with and the output shaft of the first stepper motor 25 is flexible is connected and can pass through central circular
The cylinder 20 of through hole 9, the outer surface of cylinder 20 are threaded, and described fixing nut 17 is processed with the outer surface of cylinder 20
There are threads to be connected, described fixing nut 17 also exports axis connection with the second stepper motor 28；Described circular groove with
Sealing gasket 16 is installed, the described center of sealing gasket 16 offers the through hole passed through for cylinder 20 between disk 18；
The 3rd circumferential manhole 8 with the first circumferential position correspondence of manhole 10 is uniformly offered on described sealing gasket 16.Institute
The thickness of sealing gasket 16 stated is 2mm.
It is circumferential circular logical that the diameter of the central circular through hole 9 of the described bottom center position of heat exchanger shell 1 is more than first
The diameter in hole 10.
The diameter of the disk 18 of described movable cleaning part 15 is less than the diameter of the bottom surface circular groove of heat exchanger shell 1, institute
The height for stating disk 18 is less than the depth of the bottom surface circular groove of heat exchanger shell 1；The described diameter of cylinder 20 is less than heat exchanger
The diameter of the bottom center's manhole 9 of housing 1, the described length of cylinder 20 are more than on the bottom surface circular groove of heat exchanger shell 1
Central circular through hole 9 depth.
The aperture of the first circumferential manhole 10 on the circular groove of the described bottom center position of heat exchanger shell 1 with
The aperture of second circumferential manhole 19 on the disk 18 of movable cleaning part 15, the 3rd circumferential manhole 8 on sealing gasket 16
Aperture all same.
Described heat exchanger shell 1 is connected with central dividing plate 14 using welding manner, ensures its sealing；And described change
Hot device housing 1 is aluminum alloy heat exchanger housing.
Hardware components are in the present embodiment：Described thermal finalization exhaust gas inlet 4, fresh inlet 5, thermal finalization waste gas outlet 6,
Thermocouple 21 and pressure sensor 22 are separately installed with fresh air outlet 7；Described pressure sensor 22 and thermocouple 21 is distinguished
It is connected with signal processing apparatus 23, described signal processing apparatus 23 is connected with microprocessor 24, and described microprocessor 24 is logical
Signal processing apparatus 23 is crossed respectively with the first stepper motor 25, the second stepper motor 28 and hydraulic pump 26 to be connected；The first step
Stepper motor 25 is connected with the cylinder 20 of movable cleaning part 15；The second described stepper motor 28 is connected with fixing nut 17；Institute
Hydraulic pump 26 is stated with cleaning fluid bottle 27 to be connected.
The auto-cleaning method of non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery automatically, such as Fig. 5, Fig. 9, Figure 10
Shown, what is flowed in upper strata cold flow passage 12 is normal temperature fresh air, and what is flowed in lower floor's heat passage 11 is high temperature thermal finalization waste gas,
Heat is passed to upper strata cold flow passage 12 by high temperature thermal finalization waste gas by the very high heat pipe 13 of central dividing plate 14 and heat transfer efficiency
In normal temperature fresh air, complete the heat exchange of high temperature thermal finalization waste gas and normal temperature fresh air in heat exchanger, it is fixed to high warm so as to realize
The waste heat recovery of type waste gas.Comprise the following steps：Before heat exchanger start-up operation, on the disk 18 of the movable cleaning part 15
The position of second circumferential manhole 19 and the first circumferential manhole 10 on the bottom surface of heat exchanger shell 1 is staggered and can not formed
Runner；The fixing nut 17 is engaged when initial with the screw thread of the outer surface of cylinder 20, is tightened in the bottom surface of heat exchanger shell 1
On, the bottom surface of the disk 18 of movable cleaning part 15 and heat exchanger shell 1 is compressed, realized in the case where not requiring the working condition of cleaning
Sealing, the pipeline for preventing thermal finalization waste gas from being flowed to by the second circumferential manhole 19 of movable cleaning part 15 where cleaning fluid bottle
In, cause thermal finalization exhaust gas leakage.
When heat exchanger works, it is continuously increased with the working time of heat exchanger, height warms what is carried in regular waste gas
The foreign-matter contaminations such as fiber, greasy dirt can constantly be attached to the inner surface of heat pipe 13 and heat exchanger shell 1, obstruction lower floor type of thermal communication
Road 11.With the continuous deposition of foreign-matter contamination, heat exchanger heat-transfer performance declines, and causes the thermal finalization of lower floor's heat passage 11 to be given up
Fresh inlet 5 and fresh air outlet 7 in pressure differential rise, upper strata cold flow passage 12 between gas import 4 and thermal finalization waste gas outlet 6
Between pressure differential rise, the temperature between the thermal finalization exhaust gas inlet 4 and thermal finalization waste gas outlet 6 of lower floor's heat passage 11
The temperature difference in difference, upper strata cold flow passage 12 between fresh inlet 5 and fresh air outlet 7 is relatively low compared with normal operating conditions.Therefore, originally
Embodiment measures the temperature difference between thermal finalization exhaust gas inlet 4 and thermal finalization waste gas outlet 6 using the thermocouple 21 respectively, newly
Temperature difference between wind inlet 5 and fresh air outlet 7；Measured respectively using the pressure sensor 22 thermal finalization exhaust gas inlet 4 with
Pressure differential between thermal finalization waste gas outlet 6, the pressure differential between fresh inlet 5 and fresh air outlet 7, and by pressure difference signal and temperature
Difference signal passes to microprocessor 24；After microprocessor 24 obtains temperature difference and differential pressure signal, carry out calculating processing, and with it is pre-
The temperature difference standard value first set is analyzed compared with pressure differential standard value；When actual temperature difference is less than minimum temperature difference mark
When quasi- value or actual pressure difference are more than maximum pressure differential standard value, the microprocessor 24 sends to the second stepper motor 28 and held
Row signal, the second stepper motor 28 rotate, and unscrew fixing nut 17, and the cylinder 20 of drive activity cleaning part 15 rises；It is described
Microprocessor 24 sends execution signal to the second stepper motor 28, and the second stepper motor 28 rotates, drive activity cleaning part 15
Cylinder 20 rotates, and makes on the second circumferential manhole 19 and the bottom surface of heat exchanger shell 1 of the disk 18 of movable cleaning part 15
The aligned in position of the 3rd circumferential manhole 8 on first circumferential manhole 10, sealing gasket 16 forms runner；It is simultaneously described micro-
Processor 24 sends to hydraulic pump 26 and performs order, and hydraulic pump 26 starts, and cleaning fluid bottle 27 conveys the cleaning fluid warp filled in it
The second circumferential circle of the first circumferential manhole 10 and movable cleaning part 15 on the bottom surface of heat exchanger shell 1 is flowed through after hydraulic pump 26
Lower floor's heat passage 11 is cleaned after shape through hole 19, the foreign-matter contamination washed down flows out with thermal finalization waste gas outlet 6
Heat exchanger shell 1；
While cleaning, the microprocessor 24 persistently receive thermocouple 21 and pressure sensor 22 transmit the temperature difference come and
Differential pressure signal, and compared with the standard value of setting, when actual temperature difference is more than maximum temperature difference standard value and reality
When pressure difference value is less than minimum pressure differential standard value, the microprocessor 24 sends halt instruction, hydraulic pump 26 to hydraulic pump 26
It is stopped；The microprocessor 24 sends execution signal to the first stepper motor 25, and the first stepper motor 25 rotates, and drives and lives
The cylinder 20 of dynamic cleaning part 15 rotates, and makes the on the disk 18 of movable cleaning part 15 second circumferential manhole 19 and heat exchanger
Stagger and can not form runner in the first circumferential position of manhole 10 on the bottom surface of housing 1；Meanwhile the microprocessor 24 to second
Stepper motor 28 sends execution signal, and the second stepper motor 28 rotates, and tightens fixing nut 17, the circle of drive activity cleaning part 15
Cylinder 20 declines, and the bottom surface of the disk 18 of movable cleaning part 15 and heat exchanger shell 1 is compressed, and realizes sealing.Now heat exchanger
Without washing and cleaning operation.
The present embodiment adds auto-cleaning structure thereof in heat exchanger first, by being monitored to thermal finalization exhaust gas flow path
And cleaning, the heat transfer efficiency of heat exchanger can be effectively improved, reduces degree of congestion of the thermal finalization waste gas to lower floor's heat passage.Secondly
The present embodiment is by proposing that the automatic cleaning of non-uniform heat exchange of heat pipe is cleaned in a kind of thermal finalization waste gas residual heat recovery of printing and dyeing automatically
Method, the automatic cleaning of heat exchanger can be achieved.This can saves many artificial unloading's washing and cleaning operation times.Therefore, it is automatic clear
The operating efficiency of heat exchanger can be effectively increased by washing the setting of structure, reduce entreprise cost.And the heat pipe of the present embodiment uses
Non- uniform array structure arrangement.It is distributed by improving heat pipe, contact of the heat exchanging fluid with heat pipe is more full and uniform, further carries
High heat exchange efficiency.
Claims (7)
1. non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery automatically, it is characterised in that：Including heat exchanger shell (1),
Heat pipe heat exchanging part (2) and automatic cleaning assembly (3) are installed in described heat exchanger shell (1)；Wherein：
Described heat pipe heat exchanging part (2) is arranged in heat exchanger shell (1), and will be divided into inside heat exchanger shell (1) mutually
Unmixed lower floor's heat passage (11) and upper strata cold flow passage (12)；The heat pipe heat exchanging component (2) includes central dividing plate
(14) through hole of non-uniform array structure arrangement, described non-uniform array structure row, are offered on the central dividing plate (14)
The heat pipe (13) for being provided with non-uniform array structure arrangement is inserted vertically on the through hole of cloth, and is separated by the central dividing plate (14)
Into the evaporator section in lower floor's heat passage (11) and the condensation segment positioned at upper strata cold flow passage (12)；
Thermal finalization is offered respectively on the two side of the described heat exchanger shell (1) positioned at lower floor's heat passage (11) position to give up
Gas import (4) and thermal finalization waste gas outlet (6), and described thermal finalization exhaust gas inlet (4) and thermal finalization waste gas outlet (6) are coaxial
The heart opens up；Fresh air is offered respectively on the two side of the described heat exchanger shell (1) positioned at upper strata cold flow passage (12) position
Import (5) and fresh air outlet (7), and described fresh inlet (5) and fresh air export that (7) are concentric to be opened up；The thermal finalization is given up
Gas import (4), fresh inlet (5) are located at the homonymy of heat exchanger shell (1), the thermal finalization waste gas outlet (6), fresh air outlet
(7) it is located at the homonymy of heat exchanger shell (1)；Described heat exchanger shell (1) inner bottom surface center offers circular groove, institute
The center for the circular groove stated offers central circular through hole (9)；It is circular recessed on the outside of described central circular through hole (9)
The first circumferential manhole (10) is uniformly offered on groove；
Automatic cleaning assembly (3) is installed on the circular groove of described heat exchanger shell (1) inner bottom surface；Described automatic cleaning
Component (3) includes movable cleaning part (15), sealing gasket (16) and fixing nut (17)；Described movable cleaning part (15) includes dress
The disk (18) on circular groove is fitted over, is uniformly offered on described disk (18) and the first circumferential manhole (10) position
Corresponding second circumferential manhole (19)；Described disk (18) center is provided with to be exported with the first stepper motor (25)
The flexible cylinder (20) for being connected and passing through central circular through hole (9) of axle, cylinder (20) outer surface is threaded, described
Fixing nut (17) be threaded to screw togather with cylinder (20) outer surface and be connected, described fixing nut (17) is also with second
Stepper motor (28) exports axis connection；Sealing gasket (16) is installed, described is close between described circular groove and disk (18)
Packing (16) center offers the through hole passed through for cylinder (20)；Uniformly offered on described sealing gasket (16) with
3rd circumferential manhole (8) of the first circumferential manhole (10) position correspondence.
2. non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery according to claim 1 automatically, it is characterised in that：
The diameter of the central circular through hole (9) of described heat exchanger shell (1) bottom center position is more than the first circumferential manhole
(10) diameter.
3. non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery according to claim 1 automatically, it is characterised in that：
The diameter of the disk (18) of described movable cleaning part (15) is less than the diameter of heat exchanger shell (1) bottom surface circular groove, described
The height of disk (18) is less than the depth of heat exchanger shell (1) bottom surface circular groove；Described cylinder (20) diameter, which is less than, to be changed
The diameter of hot device housing (1) bottom center's manhole (9), described cylinder (20) length are more than heat exchanger shell (1) bottom
The depth of central circular through hole (9) on the circular groove of face.
4. non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery according to claim 1 automatically, it is characterised in that：
The aperture of the first circumferential manhole (10) on the circular groove of described heat exchanger shell (1) bottom center position and activity
It is the aperture of second circumferential manhole (19) on the disk (18) of cleaning part (15), the on sealing gasket (16) the 3rd circumferential circular logical
The aperture all same in hole (8).
5. non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery according to claim 1 automatically, it is characterised in that：
Described heat exchanger shell (1) is connected with central dividing plate (14) using welding manner；And described heat exchanger shell (1) closes for aluminium
Golden heat exchanger shell.
6. non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery according to claim 1 automatically, it is characterised in that：
Described thermal finalization exhaust gas inlet (4), fresh inlet (5), thermal finalization waste gas outlet (6), fresh air outlet (7) place are separately installed with
Thermocouple (21) and pressure sensor (22)；Described pressure sensor (22) and thermocouple (21) respectively with signal processing apparatus
(23) it is connected, described signal processing apparatus (23) is connected with microprocessor (24), and described microprocessor (24) passes through signal
Processing unit (23) is connected with the first stepper motor (25), the second stepper motor (28) and hydraulic pump (26) respectively；Described first
Stepper motor (25) is connected with the cylinder (20) of movable cleaning part (15)；Described the second stepper motor (28) and fixing nut
(17) it is connected；The hydraulic pump (26) is connected with cleaning fluid bottle (27).
7. the auto-cleaning method of non-uniform heat exchange of heat pipe is cleaned in a kind of waste gas residual heat recovery automatically, it is characterised in that including
Following steps：Before heat exchanger start-up operation, the second circumferential manhole on the disk (18) of the movable cleaning part (15)
(19) position with the first circumferential manhole (10) on heat exchanger shell (1) bottom surface is staggered and can not form runner；It is described
Fixing nut (17) is engaged when initial with the screw thread of cylinder (20) outer surface, is tightened on the bottom surface of heat exchanger shell (1),
The bottom surface of the disk (18) of movable cleaning part (15) and heat exchanger shell (1) is compressed, in the case where not requiring the working condition of cleaning
Realize sealing；
When heat exchanger works, measure thermal finalization exhaust gas inlet (4) respectively using the thermocouple (21) and go out with thermal finalization waste gas
Temperature difference between mouth (6), the temperature difference between fresh inlet (5) and fresh air outlet (7)；Using the pressure sensor (22)
The pressure differential between thermal finalization exhaust gas inlet (4) and thermal finalization waste gas outlet (6) is measured respectively, and fresh inlet (5) goes out with fresh air
Pressure differential between mouth (7), and pressure difference signal and temperature signal are passed into microprocessor (24)；Microprocessor (24) obtains temperature
After degree difference and differential pressure signal, calculating processing is carried out, and carry out with predetermined temperature difference standard value and pressure differential standard value
Comparative analysis；When actual temperature difference is more than maximum pressure differential standard value less than minimum temperature difference standard value or actual pressure difference
When, the microprocessor (24) sends execution signal to the second stepper motor (28), and the second stepper motor (28) rotates, and unscrews solid
Determine nut (17), the cylinder (20) of drive activity cleaning part (15) rises；The microprocessor (24) is to the second stepper motor
(28) execution signal is sent, the second stepper motor (28) rotates, and the cylinder (20) of drive activity cleaning part (15) rotates, and makes work
Second circumferential manhole (19) of the disk (18) of dynamic cleaning part (15) and the on heat exchanger shell (1) bottom surface first circumferential circle
The aligned in position of the 3rd circumferential manhole (8) on shape through hole (10), sealing gasket (16) forms runner；The microprocessor simultaneously
Device (24) sends to hydraulic pump (26) and performs order, and hydraulic pump (26) starts, and cleaning fluid bottle (27) conveys the cleaning filled in it
Liquid flows through the first circumferential manhole (10) and movable cleaning part (15) on heat exchanger shell (1) bottom surface after hydraulic pump (26)
The second circumferential manhole (19) after lower floor's heat passage (11) is cleaned, the foreign-matter contamination washed down is fixed with heat
Type waste gas outlet (6) outflow heat exchanger housing (1)；
While cleaning, the microprocessor (24) persistently receives thermocouple (21) and pressure sensor (22) transmits the temperature of coming
Degree difference and differential pressure signal, and compared with the standard value of setting, when actual temperature difference is more than maximum temperature difference standard value
And actual pressure difference, when being less than minimum pressure differential standard value, the microprocessor (24) sends stopping to hydraulic pump (26) and referred to
Order, hydraulic pump (26) are stopped；The microprocessor (24) sends execution signal, the first stepping to the first stepper motor (25)
Motor (25) rotates, and the cylinder (20) of drive activity cleaning part (15) rotates, and makes on the disk (18) of movable cleaning part (15)
The second circumferential manhole (19) and heat exchanger shell (1) bottom surface on stagger can not for the first circumferential manhole (10) position
Form runner；Meanwhile the microprocessor (24) sends execution signal, the second stepper motor (28) to the second stepper motor (28)
Rotate, tighten fixing nut (17), the cylinder (20) of drive activity cleaning part (15) declines, by the circle of movable cleaning part (15)
The bottom surface of disk (18) and heat exchanger shell (1) compresses, and realizes sealing.
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| CN113701550A (en) * | 2021-08-19 | 2021-11-26 | 武汉理工大学 | Automatic cleaning device and method suitable for diffusion welding hybrid heat exchanger |
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