CN103088507A - Non-return-air classification dewatering and water-wind sensible heat gradient utilization relaxation heat setting machine - Google Patents
Non-return-air classification dewatering and water-wind sensible heat gradient utilization relaxation heat setting machine Download PDFInfo
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- CN103088507A CN103088507A CN2013100255148A CN201310025514A CN103088507A CN 103088507 A CN103088507 A CN 103088507A CN 2013100255148 A CN2013100255148 A CN 2013100255148A CN 201310025514 A CN201310025514 A CN 201310025514A CN 103088507 A CN103088507 A CN 103088507A
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Abstract
The invention relates to a non-return-air classification dewatering and water-wind sensible heat gradient utilization relaxation heat setting machine. New wind in a new wind preheater sequentially passes through an exhaust preheating section, a low pressure condensate water preheating section, a middle pressure condensate water preheating section and a high pressure condensate water preheating section to enter into an air compensation port of the relaxation heat setting machine, and an exhaust tube is connected into the exhaust preheating section. A total dewatering tube of a heat exchanger is in parallel connection with a high pressure dewatering tube, a middle pressure dewatering tube and a lower pressure dewatering tube which all can be switched. An outlet of a high pressure drain valve is connected into the high pressure condensate water preheating section through a first condensate water reuse tube, an outlet of a middle pressure drain valve is connected into a middle pressure condensate water preheating section through a second condensate water reuse tube, and an outlet of a low pressure drain valve is connected into the low pressure condensate water preheating section through a third condensate water reuse tube. Dewatering of the high pressure condensate water preheating section is also connected into an inlet of the middle pressure condensate water preheating section, and dewatering of the middle condensate water preheating section is also connected into an inlet of the low pressure condensate water preheating section. The setting machine can achieve sufficient utilization of waste heat of air exhaust and condensate water, and is high in heat efficiency.
Description
Technical field
The present invention relates to a kind of loosening heat setting machine, particularly a kind of without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine.
Background technology
Loosening heat setting machine is often used in the post processing of polyester staple fiber, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger and product is carried out the drying chamber of shaping and drying, the inlet scoop of blower fan communicates with wind-supplying mouth on casing, the air outlet of blower fan is aimed at the heat exchanger of top, the air outlet of heat exchanger top enters drying chamber, the drying chamber below is provided with return air inlet and exhaust outlet, exhaust outlet leads to outside casing by exhaust duct, hand control valve is installed on exhaust duct, and return air inlet also communicates with the inlet scoop of blower fan.Entering new wind in casing from wind-supplying mouth mixes by blower fan with return air and blows to heat exchanger, heat exchanger is heated becomes hot blast, hot blast enters drying chamber and product is finalized the design and dry, and then a part of wind enters exhaust outlet by air draft, and a part of wind is by the return air inlet reuse.High-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe are connected with main feed header by stop valve respectively, and main feed header is connected with the entrance of heat exchanger, and the outlet conduit of heat exchanger is provided with drain valve.
The weak point of this loosening heat setting machine is: (1) is different according to product, with steam pressure, Three Estate is arranged, a drain valve but only is installed, drain valve can only work under some pressure, when non-design pressure state, can not keep the required pressure reduction of normal operation, or discharge capacity is inadequate, or steam leakage is serious.(2) waste heat of condensed water that drain valve is arranged needs external user to be used, and when without suitable user, inevitably is drained waste.(3) pollutant that carries of return air very easily in the heat exchanger deposition, worsens heat exchange efficiency.(4) even condensation water residual heat is flashed utilization, the condensate temperature of discharging still has 130 ℃～150 ℃, and the waste heat loss amount is large.(5) the high temperature air exhaust waste heat does not utilize, and exhaust air rate is manually controlled, and discharge capacity randomness is large.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, provide a kind of without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine, no matter product uses high pressure, middle pressure or low-pressure steam, loosening heat setting machine self all can realize waste heat step, take full advantage of.
for solving above technical problem, of the present invention a kind of without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger reaches the drying chamber that product is carried out shaping and drying, the inlet scoop of described blower fan communicates with wind-supplying mouth on casing, the air outlet of blower fan is aimed at the heat exchanger of top, the air outlet of described heat exchanger top enters described drying chamber, the drying chamber below is provided with exhaust outlet, described exhaust outlet leads to outside casing by exhaust duct, also comprise the fresh air preheating device, described fresh air preheating device comprises the air draft preheating section that carries out successively indirect heat exchange with new wind, low pressure condensation water preheat section, middle pressure condensed water preheating section and high pressure condensation water preheat section, new wind enters the fresh air preheating device by the new wind entrance of air draft preheating section, the pre-hot blast outlet of air draft preheating section, low pressure condensation water preheat section, middle pressure condensed water preheating section and the high pressure condensation water preheat Duan Houcong high pressure condensation water preheat section of flowing through is successively flowed out, the described wind-supplying mouth of described pre-hot blast outlet access loosening heat setting machine, the air draft entrance of the described air draft preheating section of described exhaust duct access, be connected in parallel to the high pressure draining pipe that can switch on total drain pipe of described heat exchanger, middle pressure drain pipe and low pressure drain pipe, described high pressure draining pipe, be separately installed with high pressure drain valve on middle pressure drain pipe and low pressure drain pipe, middle pressure drain valve and low pressure drain valve, the outlet of described high pressure drain valve is by the entrance of the first described high pressure condensation water preheat section of recycling condensing water pipe access, the outlet of described middle pressure drain valve is by the entrance of the second described middle pressure condensed water preheating section of recycling condensing water pipe access, the outlet of described low pressure drain valve is by the entrance of the 3rd described low pressure condensation water preheat section of recycling condensing water pipe access.
With respect to prior art, the present invention has obtained following beneficial effect: (1) is when Product Process needs high steam, to heat exchanger input high steam, high steam becomes the high pressure condensed water discharge latent heat in heat exchanger after, enter high pressure condensation water preheat section by the first recycling condensing water pipe after the high pressure condensed water is dredged out by high pressure drain valve new wind is carried out fourth stage preheating, in high pressure condensation water preheat section, the high pressure condensed water discharges sensible heat to new wind; (2) when Product Process needs middle pressure steam, to heat exchanger input middle pressure steam, middle pressure steam becomes middle pressure condensed water discharge latent heat in heat exchanger after, enter middle pressure condensed water preheating section by the second recycling condensing water pipe after middle pressure condensed water is dredged out by middle pressure drain valve new wind is carried out third level preheating, at middle pressure condensed water preheating section, middle pressure condensed water discharges sensible heat to new wind; (3) when Product Process needs low-pressure steam, to heat exchanger input low-pressure steam, low-pressure steam becomes the low pressure condensed water discharge latent heat in heat exchanger after, enter low pressure condensation water preheat section by the 3rd recycling condensing water pipe after the low pressure condensed water is dredged out by the low pressure drain valve new wind is carried out second level preheating, in low pressure condensation water preheat section, the low pressure condensed water discharges sensible heat to new wind; (4) the air draft preheating section of the air draft of loosening heat setting machine access fresh air preheating device carries out first order preheating to new wind, and the waste heat in air draft is recovered, and has reduced thermal pollution and the heat loss of discharging, and new air temperature is able to preliminary raising; New wind continues to be heated in low pressure condensation water preheat section, middle pressure condensed water preheating section and high pressure condensation water preheat section subsequently, is admitted in loosening heat setting machine after temperature improves step by step, has reduced the steam consumption of heat exchanger in the loosening heat setting machine; The new wind that temperature is minimum is first through the lower air draft preheating of excess temperature, then by the slightly high low pressure condensation water preheat of temperature, then by the higher middle pressure condensed water preheating of temperature, then by the higher high pressure condensation water preheat of temperature; In this process, the temperature of new wind improves step by step, is also to increase gradually to the temperature of the medium of its heating, and the mode of this countercurrent flow has totally kept very high heat exchange efficiency.(5) the present invention need not to use flash tank, level pressure overflow valve and front pressure control valve, has reduced cost, has saved installing space, has reduced floor space, avoids too bulky complex of laxation shaping machine, is more conducive to arrange in factory building use.The pressure and temperature of saturated vapor and saturated condensed water is one to one, flash distillation utilizes waste heat just to reclaim condensed water in the sensible heat under original pressure and the difference between the sensible heat under flashing pressure, and flashing pressure is lower, the flash steam mobilization dynamic is lower, the flash steam utilization is more difficult, therefore be difficult to condensed water is reduced to below 100 ℃; Reclaim condensation water residual heat with flash distillation and compare, the present invention can reclaim high pressure condensed water sensible heat, middle pressure condensed water sensible heat, low pressure condensed water sensible heat and air exhaust waste heat, and the exhaust temperature of condensed water can be reduced to below 60 ℃, and heat utilization rate is able to further raising.
As preferred version of the present invention, the outlet of described high pressure condensation water preheat section is provided with the 4th drain valve, and the outlet of described the 4th drain valve is by the entrance of the 4th described middle pressure condensed water preheating section of recycling condensing water pipe access; The outlet of described middle pressure condensed water preheating section is provided with the 5th drain valve, and the outlet of described the 5th drain valve is by the entrance of the 5th described low pressure condensation water preheat section of recycling condensing water pipe access; The outlet of described low pressure condensation water preheat section is provided with the 6th drain valve, and the outlet of described the 6th drain valve is by the 6th condensate pipe access condensate pump.(1) when Product Process needs high steam, to heat exchanger input high steam, high steam becomes the high pressure condensed water discharge latent heat in heat exchanger after, enter high pressure condensation water preheat section by the first recycling condensing water pipe after the high pressure condensed water is dredged out by high pressure drain valve new wind is carried out fourth stage preheating, in high pressure condensation water preheat section, after the high pressure condensed water discharges sensible heat to new wind, pressure drop becomes middle pressure condensed water; Should middlely press condensed water to be dredged out by the 4th drain valve, then enter middle pressure condensed water preheating section by the 4th recycling condensing water pipe new wind is carried out third level preheating, at middle pressure condensed water preheating section, after middle pressure condensed water discharges sensible heat to new wind, pressure drop becomes the low pressure condensed water, this low pressure condensed water is dredged out by the 5th drain valve, then enter low pressure condensation water preheat section by the 5th recycling condensing water pipe new wind is carried out second level preheating, the first order preheating of new wind is undertaken by air draft; Loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.(2) when Product Process needs middle pressure steam, to heat exchanger input middle pressure steam, middle pressure steam becomes middle pressure condensed water discharge latent heat in heat exchanger after, enter middle pressure condensed water preheating section by the second recycling condensing water pipe after middle pressure condensed water is dredged out by middle pressure drain valve new wind is carried out third level preheating, at middle pressure condensed water preheating section, after middle pressure condensed water discharges sensible heat to new wind, pressure drop becomes the low pressure condensed water, this low pressure condensed water is dredged out by the 5th drain valve, then enter low pressure condensation water preheat section by the 5th recycling condensing water pipe new wind is carried out second level preheating, the first order preheating of new wind is undertaken by air draft, loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.(3) when Product Process needs low-pressure steam, to heat exchanger input low-pressure steam, low-pressure steam becomes the low pressure condensed water discharge latent heat in heat exchanger after, enter low pressure condensation water preheat section by the 3rd recycling condensing water pipe after the low pressure condensed water is dredged out by the low pressure drain valve new wind is carried out second level preheating, the first order preheating of new wind is undertaken by air draft; Loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.
As preferred version of the present invention, high-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe are connected with main feed header by the first stop valve, the second stop valve and the 3rd stop valve respectively, and described main feed header is connected with the entrance of described heat exchanger; Described high pressure draining pipe is provided with the 4th stop valve, and the rear of described the 4th stop valve is in series with described high pressure drain valve; Described middle pressure drain pipe is provided with the 6th stop valve, and the rear of described the 6th stop valve is in series with described middle pressure drain valve; Between the entrance of described the 4th stop valve and described the 6th stop valve, cross-over connection has the 5th stop valve, and between the entrance of described the 6th stop valve and described low pressure drain valve, cross-over connection has the 7th stop valve; On described the 4th recycling condensing water pipe, the 8th stop valve is installed, on described the 5th recycling condensing water pipe, the 9th stop valve is installed.(1) when Product Process need to use high steam, open the first stop valve, the 4th stop valve, the 8th stop valve and the 9th stop valve, close simultaneously the second stop valve, the 3rd stop valve, the 5th stop valve, the 6th stop valve and the 7th stop valve, what this moment, heat exchanger used is the high steam of outer confession, the high pressure condensed water that heat exchanger produces is dredged out through the 4th stop valve and high pressure drain valve, the high pressure condensation water preheat section that enters the fresh air preheating device through the first recycling condensing water pipe is carried out fourth stage preheating to new wind, in high pressure condensation water preheat section, the full flashing due to dilatation of high pressure condensed water, the condensed water pressure drop, condensation rapidly after flash steam and new air heat-exchange release latent heat, the condensed water of flash distillation and pressure drop and full flashing vapour condensed water do not continue to discharge in high pressure condensation water preheat section and dredge out from the 4th drain valve after becoming middle pressure condensed water after sensible heat, during controlling, the 4th drain valve press the flow of condensed water to guarantee condensed water and the new sufficient exchange heat of wind in high pressure condensation water preheat section, enter middle pressure condensed water preheating section by the 4th recycling condensing water pipe after middle pressure condensed water is dredged out by the 4th drain valve new wind is carried out third level preheating, in middle pressure condensed water preheating section, the secondary flash distillation due to dilatation of middle pressure condensed water, condensed water pressure descends for the second time, condensation rapidly after secondary flash steam and new air heat-exchange release latent heat, the condensed water that descends for the second time of flash distillation and pressure and secondary flash steam condensed water do not continue to discharge in middle pressure condensed water preheating section becomes the low pressure condensed water after sensible heat and dredges out from the 5th drain valve, the 5th drain valve is controlled the flow of low pressure condensed water to press condensed water and the new sufficient exchange heat of wind in the condensed water preheating section in guaranteeing, enter low pressure condensation water preheat section by the 5th recycling condensing water pipe after the low pressure condensed water is dredged out by the 5th drain valve new wind is carried out second level preheating, in low pressure condensation water preheat section, three times due to dilatation flash distillations of low pressure condensed water, condensed water pressure descends for the third time, three flash steams and new air heat-exchange discharge condensation rapidly after latent heat, the condensed water that descends for the third time of flash distillation and pressure and three flash steam condensed waters do not continue to discharge in low pressure condensation water preheat section becomes cryogenic condensation water after sensible heat and dredges out from the 6th drain valve, the 6th drain valve is controlled the flow of cryogenic condensation water to guarantee condensed water and the new sufficient exchange heat of wind in low pressure condensation water preheat section, cryogenic condensation water is by the 6th condensate pipe access condensate pump, the first order preheating of new wind is undertaken by air draft, loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.(2) when Product Process need to use middle pressure steam, open the second stop valve, the 5th stop valve, the 6th stop valve and the 9th stop valve, close simultaneously the first stop valve, the 3rd stop valve, the 4th stop valve, the 7th stop valve and the 8th stop valve, what this moment, heat exchanger used is the middle pressure steam of outer confession, the middle pressure condensed water that heat exchanger produces is through the 5th stop valve, the 6th stop valve and middle pressure drain valve are dredged out, the middle pressure condensed water preheating section that enters the fresh air preheating device through the second recycling condensing water pipe carries out third level preheating to new wind, in middle pressure condensed water preheating section, the full flashing due to dilatation of middle pressure condensed water, the condensed water pressure drop, condensation rapidly after full flashing vapour and new air heat-exchange release latent heat, the condensed water of flash distillation and pressure drop and full flashing vapour condensed water do not continue to discharge in middle pressure condensed water preheating section becomes the low pressure condensed water after sensible heat and dredges out from the 5th drain valve, the 5th drain valve is controlled the flow of low pressure condensed water to press condensed water and the new sufficient exchange heat of wind in the condensed water preheating section in guaranteeing, enter low pressure condensation water preheat section by the 5th recycling condensing water pipe after the low pressure condensed water is dredged out by the 5th drain valve new wind is carried out second level preheating, in low pressure condensation water preheat section, the low pressure condensed water is the secondary flash distillation due to dilatation, condensed water pressure descends for the second time, condensation rapidly after secondary flash steam and new air heat-exchange release latent heat, the condensed water that descends for the second time of flash distillation and pressure and secondary flash steam condensed water do not continue to discharge in low pressure condensation water preheat section becomes cryogenic condensation water after sensible heat and dredges out from the 6th drain valve, the 6th drain valve is controlled the flow of cryogenic condensation water to guarantee condensed water and the new sufficient exchange heat of wind in low pressure condensation water preheat section, cryogenic condensation water is by the 6th condensate pipe access condensate pump, the first order preheating of new wind is undertaken by air draft, loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.(3) when Product Process need to use low-pressure steam, open the 3rd stop valve, the 5th stop valve and the 7th stop valve, close simultaneously the first stop valve, the second stop valve, the 4th stop valve, the 6th stop valve, the 8th stop valve and the 9th stop valve, what this moment, heat exchanger used is the low-pressure steam of outer confession, the low pressure condensed water that heat exchanger produces is through the 5th stop valve, the 7th stop valve and low pressure drain valve are dredged out, the low pressure condensation water preheat section that enters the fresh air preheating device through the 3rd recycling condensing water pipe is carried out second level preheating to new wind, in low pressure condensation water preheat section, the flash distillation due to dilatation of low pressure condensed water, the condensed water pressure drop, condensation rapidly after flash steam and new air heat-exchange release latent heat, the condensed water of flash distillation and pressure drop and flash steam condensed water do not continue to discharge in low pressure condensation water preheat section becomes cryogenic condensation water after sensible heat and dredges out from the 6th drain valve, the 6th drain valve is controlled the flow of cryogenic condensation water to guarantee condensed water and the new sufficient exchange heat of wind in low pressure condensation water preheat section, cryogenic condensation water is by the 6th condensate pipe access condensate pump, the first order preheating of new wind is undertaken by air draft, loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.
As preferred version of the present invention, the front and back of described high pressure drain valve, middle pressure drain valve, low pressure drain valve, the 4th drain valve, the 5th drain valve and the 6th drain valve are in series with respectively front stop valve and rear stop valve, are parallel with the bypass cutoff valve between the entrance of described front stop valve and the outlet of rear stop valve.Front stop valve and rear stop valve normally are in opening, when drain valve occur to damage need is changed, close front stop valve and rear stop valve, open the bypass cutoff valve, can in the situation that not breaks in production change drain valve; When heat exchanger uses the condensed water heat exchange, also can control flow by the aperture of regulating front stop valve and rear stop valve.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments, and accompanying drawing only provides reference and explanation use, and is non-in order to limit the present invention.
Fig. 1 is the schematic diagram of the present invention's and water wind sensible heat cascade utilization loosening heat setting machine hydrophobic without the return air classification.
In figure: the S1. high-pressure steam pipe; S2. middle pressure steam pipe; S3. low pressure steam pipe; S4. main feed header; E1. heat exchanger; E2. fresh air preheating device; W0. total drain pipe; W1. high pressure draining pipe; W2. press drain pipe in; W3. low pressure drain pipe; R1. the first recycling condensing water pipe; R2. the second recycling condensing water pipe; R3. the 3rd recycling condensing water pipe; R4. the 4th recycling condensing water pipe; R5. the 5th recycling condensing water pipe; R6. the 6th condensate pipe; V1. the first stop valve; V2. the second stop valve; V3. the 3rd stop valve; V4. the 4th stop valve; V5. the 5th stop valve; V6. the 6th stop valve; V7. the 7th stop valve; V8. the 8th stop valve; V9. the 9th stop valve; Vt1. high pressure drain valve; Vt2. press drain valve in; Vt3. low pressure drain valve; Vt4. the 4th drain valve; Vt5. the 5th drain valve; Vt6. the 6th drain valve; P1. condensate pump; F1. new wind; F2. pre-hot blast; F4. hot blast; F6. air draft; Fy. blower fan.
The specific embodiment
As shown in Figure 1, the present invention is hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine without the return air classification, the cabinets cavity of loosening heat setting machine is provided with blower fan Fy, heat exchanger E1 and product is carried out the drying chamber of shaping and drying, the inlet scoop of blower fan Fy communicates with wind-supplying mouth on casing, the air outlet of blower fan Fy is aimed at the heat exchanger E1 of top, the air outlet of heat exchanger E1 top enters drying chamber, is provided with exhaust outlet below drying chamber, and exhaust outlet leads to outside casing by exhaust duct.
Loosening heat setting machine is provided with fresh air preheating device E2 outward, and fresh air preheating device E2 comprises air draft preheating section, low pressure condensation water preheat section, middle pressure condensed water preheating section and the high pressure condensation water preheat section of carrying out successively indirect heat exchange with new wind F1; New wind F1 enters fresh air preheating device E2 by the new wind entrance of air draft preheating section, the pre-hot blast outlet of air draft preheating section, low pressure condensation water preheat section, middle pressure condensed water preheating section and the high pressure condensation water preheat Duan Houcong high pressure condensation water preheat section of flowing through is successively flowed out, the wind-supplying mouth of pre-hot blast outlet access loosening heat setting machine, the air draft entrance of exhaust duct access air draft preheating section.
High-pressure steam pipe S1, middle pressure steam pipe S2 are connected with main feed header S4 with the 3rd stop valve V3 by the first stop valve V1, the second stop valve V2 respectively with low pressure steam pipe S3, and main feed header S4 is connected with the entrance of heat exchanger E1.Be connected in parallel to high pressure draining pipe W1, middle pressure drain pipe W2 and low pressure drain pipe W3 on total drain pipe W0 of heat exchanger E1, high pressure draining pipe W1 is provided with the 4th stop valve V4, and the rear of the 4th stop valve V4 is in series with high pressure drain valve Vt1; Middle pressure drain pipe W2 is provided with the 6th stop valve V6, and the rear of the 6th stop valve V6 is in series with middle pressure drain valve Vt2; Between the entrance of the 4th stop valve V4 and the 6th stop valve V6, cross-over connection has the 5th stop valve V5, and between the entrance of the 6th stop valve V6 and low pressure drain valve Vt3, cross-over connection has the 7th stop valve V7.
The outlet of high pressure drain valve Vt1 is by the entrance of the first recycling condensing water pipe R1 access high pressure condensation water preheat section, the outlet of middle pressure drain valve Vt2 is by pressing the entrance of condensed water preheating section in the second recycling condensing water pipe R2 access, the outlet of low pressure drain valve Vt3 is by the entrance of the 3rd recycling condensing water pipe R3 access low pressure condensation water preheat section.
The outlet of high pressure condensation water preheat section is provided with the 4th drain valve Vt4, and the outlet of the 4th drain valve Vt4 is equipped with the 8th stop valve V8 by pressing the entrance of condensed water preheating section in the 4th recycling condensing water pipe R4 access on the 4th recycling condensing water pipe R4.The outlet of middle pressure condensed water preheating section is provided with the 5th drain valve Vt5, and the outlet of the 5th drain valve Vt5 is equipped with the 9th stop valve V9 by the entrance of the 5th recycling condensing water pipe R5 access low pressure condensation water preheat section on the 5th recycling condensing water pipe R5; The outlet of low pressure condensation water preheat section is provided with the 6th drain valve Vt6, and the outlet of the 6th drain valve Vt6 is by the 6th condensate pipe R6 access condensate pump P1.
The front and back of high pressure drain valve Vt1, middle pressure drain valve Vt2, low pressure drain valve Vt3, the 4th drain valve Vt4, the 5th drain valve Vt5 and the 6th drain valve Vt6 are in series with respectively front stop valve and rear stop valve, are parallel with the bypass cutoff valve between the entrance of front stop valve and the outlet of rear stop valve.Front stop valve and rear stop valve normally are in opening, when drain valve occur to damage need is changed, close front stop valve and rear stop valve, open the bypass cutoff valve, can in the situation that not breaks in production change drain valve; When heat transmission equipment uses the condensed water heat exchange, also can control flow by the aperture of regulating front stop valve and rear stop valve.
In drying chamber, the moisture of product constantly is evaporated, and drying chamber relative humidity constantly raises, and humid air is discharged by exhaust duct.The air draft preheating section that air draft F6 enters fresh air preheating device E2 carries out first order preheating to new wind F1, and the waste heat in air draft is recovered, and new air temperature is able to preliminary raising; New wind continues to be heated in the low pressure condensation water preheat section of fresh air preheating device E2, middle pressure condensed water preheating section and high pressure condensation water preheat section subsequently, after improving step by step, temperature becomes the wind-supplying mouth that pre-hot blast F2 is admitted to loosening heat setting machine, pre-hot blast F2 enters the inlet scoop of blower fan Fy, and the wind that blower fan Fy blows out becomes hot blast F4 and enters drying chamber after heat exchanger E1 heating.
when Product Process need to use high steam, open the first stop valve V1, the 4th stop valve V4, the 8th stop valve V8 and the 9th stop valve V9, close simultaneously the second stop valve V2, the 3rd stop valve V3, the 5th stop valve V5, the 6th stop valve V6 and the 7th stop valve V7, what this moment, heat exchanger E1 used is the high steam of outer confession, the high pressure condensed water that heat exchanger E1 produces is dredged out through the 4th stop valve V4 and high pressure drain valve Vt1, the high pressure condensation water preheat section that enters fresh air preheating device E2 through the first recycling condensing water pipe R1 is carried out fourth stage preheating to new wind, in high pressure condensation water preheat section, after the high pressure condensed water discharges sensible heat to new wind, pressure drop becomes middle pressure condensed water, should middlely press condensed water to be dredged out by the 4th drain valve Vt4, then enter middle pressure condensed water preheating section through the 4th recycling condensing water pipe R4 and the 8th stop valve V8 new wind is carried out third level preheating, at middle pressure condensed water preheating section, after middle pressure condensed water discharges sensible heat to new wind, pressure drop becomes the low pressure condensed water, this low pressure condensed water is dredged out by the 5th drain valve Vt5, then enter low pressure condensation water preheat section through the 5th recycling condensing water pipe R5 and the 9th stop valve V9 new wind is carried out second level preheating, in low pressure condensation water preheat section, the low pressure condensed water discharges pressure drop after sensible heat to new wind, after dredging out from the 6th drain valve Vt6, P1 sends into condensation water recovery system by condensate pump, the first order preheating of new wind F1 is undertaken by air draft.
When Product Process need to use middle pressure steam, open the second stop valve V2, the 5th stop valve V5, the 6th stop valve V6 and the 9th stop valve V9, close simultaneously the first stop valve V1, the 3rd stop valve V3, the 4th stop valve V4, the 7th stop valve V7 and the 8th stop valve V8; What this moment, heat exchanger E1 used is the middle pressure steam of outer confession, the middle pressure condensed water that heat exchanger E1 produces is dredged out through the 5th stop valve V5, the 6th stop valve V6 and middle pressure drain valve Vt2, the middle pressure condensed water preheating section that enters fresh air preheating device E2 through the second recycling condensing water pipe R2 carries out third level preheating to new wind, at middle pressure condensed water preheating section, after middle pressure condensed water discharges sensible heat to new wind, pressure drop becomes the low pressure condensed water; This low pressure condensed water is dredged out by the 5th drain valve Vt5, then enter low pressure condensation water preheat section through the 5th recycling condensing water pipe R5 and the 9th stop valve V9 new wind is carried out second level preheating, in low pressure condensation water preheat section, the low pressure condensed water discharges pressure drop after sensible heat to new wind, after dredging out from the 6th drain valve Vt6, P1 sends into condensation water recovery system by condensate pump, and the first order preheating of new wind is undertaken by air draft.
When Product Process need to use low-pressure steam, open the 3rd stop valve V3, the 5th stop valve V5 and the 7th stop valve V7, close simultaneously the first stop valve V1, the second stop valve V2, the 4th stop valve V4, the 6th stop valve V6, the 8th stop valve V8 and the 9th stop valve V9; What this moment, heat exchanger E1 used is the low-pressure steam of outer confession, the low pressure condensed water that heat exchanger E1 produces is dredged out through the 5th stop valve V5, the 7th stop valve V7 and low pressure drain valve Vt3, the low pressure condensation water preheat section that enters fresh air preheating device E2 through the 3rd recycling condensing water pipe R3 is carried out second level preheating to new wind, in low pressure condensation water preheat section, the low pressure condensed water discharges pressure drop after sensible heat to new wind, after dredging out from the 6th drain valve Vt6, P1 sends into condensation water recovery system by condensate pump, and the first order preheating of new wind is undertaken by air draft; Loosening heat setting machine self just can be realized the cascade utilization of air draft and condensation water residual heat.
The above only is the present invention's better possible embodiments, and is non-so limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (4)
- one kind without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger reaches the drying chamber that product is carried out shaping and drying, the inlet scoop of described blower fan communicates with wind-supplying mouth on casing, the air outlet of blower fan is aimed at the heat exchanger of top, the air outlet of described heat exchanger top enters described drying chamber, the drying chamber below is provided with exhaust outlet, described exhaust outlet leads to outside casing by exhaust duct, it is characterized in that: also comprise the fresh air preheating device, described fresh air preheating device comprises the air draft preheating section that carries out successively indirect heat exchange with new wind, low pressure condensation water preheat section, middle pressure condensed water preheating section and high pressure condensation water preheat section, new wind enters the fresh air preheating device by the new wind entrance of air draft preheating section, the pre-hot blast outlet of air draft preheating section, low pressure condensation water preheat section, middle pressure condensed water preheating section and the high pressure condensation water preheat Duan Houcong high pressure condensation water preheat section of flowing through is successively flowed out, the described wind-supplying mouth of described pre-hot blast outlet access loosening heat setting machine, the air draft entrance of the described air draft preheating section of described exhaust duct access, be connected in parallel to the high pressure draining pipe that can switch on total drain pipe of described heat exchanger, middle pressure drain pipe and low pressure drain pipe, described high pressure draining pipe, be separately installed with high pressure drain valve on middle pressure drain pipe and low pressure drain pipe, middle pressure drain valve and low pressure drain valve, the outlet of described high pressure drain valve is by the entrance of the first described high pressure condensation water preheat section of recycling condensing water pipe access, the outlet of described middle pressure drain valve is by the entrance of the second described middle pressure condensed water preheating section of recycling condensing water pipe access, the outlet of described low pressure drain valve is by the entrance of the 3rd described low pressure condensation water preheat section of recycling condensing water pipe access.
- According to claim 1 without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine, it is characterized in that: the outlet of described high pressure condensation water preheat section is provided with the 4th drain valve, and the outlet of described the 4th drain valve is by the entrance of the 4th described middle pressure condensed water preheating section of recycling condensing water pipe access; The outlet of described middle pressure condensed water preheating section is provided with the 5th drain valve, and the outlet of described the 5th drain valve is by the entrance of the 5th described low pressure condensation water preheat section of recycling condensing water pipe access; The outlet of described low pressure condensation water preheat section is provided with the 6th drain valve, and the outlet of described the 6th drain valve is by the 6th condensate pipe access condensate pump.
- According to claim 1 without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine, it is characterized in that: high-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe are connected with main feed header by the first stop valve, the second stop valve and the 3rd stop valve respectively, and described main feed header is connected with the entrance of described heat exchanger; Described high pressure draining pipe is provided with the 4th stop valve, and the rear of described the 4th stop valve is in series with described high pressure drain valve; Described middle pressure drain pipe is provided with the 6th stop valve, and the rear of described the 6th stop valve is in series with described middle pressure drain valve; Between the entrance of described the 4th stop valve and described the 6th stop valve, cross-over connection has the 5th stop valve, and between the entrance of described the 6th stop valve and described low pressure drain valve, cross-over connection has the 7th stop valve; On described the 4th recycling condensing water pipe, the 8th stop valve is installed, on described the 5th recycling condensing water pipe, the 9th stop valve is installed.
- according to claim 1 to 3 any one described without the return air classification hydrophobic and water wind sensible heat cascade utilization loosening heat setting machine, it is characterized in that: the front and back of described high pressure drain valve, middle pressure drain valve, low pressure drain valve, the 4th drain valve, the 5th drain valve and the 6th drain valve are in series with respectively front stop valve and rear stop valve, are parallel with the bypass cutoff valve between the entrance of described front stop valve and the outlet of rear stop valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025514.8A CN103088507B (en) | 2013-01-22 | 2013-01-22 | Non-return-air classification dewatering and water-wind sensible heat gradient utilization relaxation heat setting machine |
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| CN201310025514.8A CN103088507B (en) | 2013-01-22 | 2013-01-22 | Non-return-air classification dewatering and water-wind sensible heat gradient utilization relaxation heat setting machine |
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| CN103088507A true CN103088507A (en) | 2013-05-08 |
| CN103088507B CN103088507B (en) | 2015-01-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2630853A1 (en) * | 1976-06-15 | 1977-12-22 | Escher Wyss Gmbh | DRYING DEVICE |
| JPH03502119A (en) * | 1988-11-02 | 1991-05-16 | テーツエーハー、サーモ‐コンサルテイング‐ハイデルベルク、ゲゼルシヤフト、ミツト、ベシユレンクテル、ハフツング | Method and apparatus for recapture of waste heat contained in moist dry air exiting a paper dryer of a paper machine |
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| CN2342342Y (en) * | 1998-05-27 | 1999-10-06 | 薛翔 | Steam ejecting graded heat supply device |
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| CN202304507U (en) * | 2011-11-01 | 2012-07-04 | 华汇工程设计集团股份有限公司 | Heat exchange device for waste heat recovery of setting machine in textile printing and dyeing mill |
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| CN102878547A (en) * | 2012-10-17 | 2013-01-16 | 亿恒节能科技江苏有限公司 | Outer drying steam triple-effect heat exchange system |
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| CN103088507B (en) | 2015-01-14 |
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