CN103060990B - Constant-humidity relaxation heat setting machine for condensate water flashing and sensible heat and exhaust afterheat recovering - Google Patents
Constant-humidity relaxation heat setting machine for condensate water flashing and sensible heat and exhaust afterheat recovering Download PDFInfo
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- CN103060990B CN103060990B CN201310034948.4A CN201310034948A CN103060990B CN 103060990 B CN103060990 B CN 103060990B CN 201310034948 A CN201310034948 A CN 201310034948A CN 103060990 B CN103060990 B CN 103060990B
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Abstract
The invention relates to a constant-humidity relaxation heat setting machine for condensate water flashing and sensible heat and exhaust afterheat recovering. An inlet of a high-pressure heat exchanger is connected with a steam supply main pipe; an outlet of the high-pressure heat exchanger is connected into a medium-pressure flashing tank through a high-pressure trap; a medium-pressure constant-pressure overflow valve is arranged at the top part of the medium-pressure flashing tank; an outlet of the medium-pressure constant-pressure overflow valve is connected into an inlet of the medium-pressure constant-pressure overflow valve through a medium-pressure flashing steam pipe; an outlet of a medium-pressure heat exchanger is connected to a low-pressure flashing tank through the medium-pressure trap; a low-pressure constant-pressure overflow valve is arranged at the top part of the low-pressure flashing tank; an outlet of the low-pressure constant-pressure overflow valve is connected into a low-pressure heat exchanger through a low-pressure flashing steam pipe; the outlet of the low-pressure heat exchanger is connected into a condensate pump through a low-voltage trap; an outlet of the condensate pump is connected into a fresh air preheater; a pre-heating air outlet of the fresh air preheater is connected into an air supply inlet of the relaxation heat setting machine, and the relaxation heat setting machine is connected into the fresh air preheater to indirectly exchange heat with the fresh air. The setting machine can achieve air exhaust and full utilization of condensate afterheat, and is high in thermal efficiency.
Description
Technical field
The present invention relates to a kind of loosening heat setting machine, particularly a kind of constant humidity, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine.
Background technology
The post processing of polyester staple fiber often uses loosening heat setting machine, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger and product is carried out to the drying chamber of shaping and drying, the inlet scoop of blower fan communicates with the wind-supplying mouth on casing, the air outlet of blower fan aims at the heat exchanger of top, air outlet above heat exchanger enters drying chamber, return air inlet and exhaust outlet is provided with below drying chamber, exhaust outlet leads to outside casing by exhaust duct, exhaust duct is provided with hand control valve, and return air inlet also communicates with the inlet scoop of blower fan.Heat exchanger is blowed to through blower fan after the new wind entered in casing from wind-supplying mouth mixes with return air, heat exchanger is heated becomes hot blast, hot blast enters drying chamber and shapes to product and dry, and then a part of wind enters exhaust outlet by air draft, and a part of wind is by return air inlet reuse.High-pressure steam pipe, middle pressure steam pipe are connected with main feed header respectively by stop valve with low pressure steam pipe, 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, Three Estate is had with steam pressure, but only a drain valve is installed, drain valve normally can only work under some pressure, when non-design pressure state, can not maintain the pressure reduction needed for normal work, or discharge capacity is inadequate, or steam leakage is serious.(2) drain valve arrange condensed water waste heat need external user to be used, when without suitable user, be inevitably drained waste.(3) pollutant that return air carries very easily deposits at heat exchanger, worsens heat exchange efficiency.(4) even if condensation water residual heat is flashed utilization, the condensate temperature of discharge still has 130 DEG C ~ 150 DEG C, and waste heat loss measures greatly.(5) high temperature air exhaust waste heat does not utilize, exhaust air rate Non-follow control, and discharge capacity randomness is large.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, there is provided a kind of constant humidity, condensed water flash and sensible heat and air exhaust waste heat to reclaim 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, make full use of.
For solving above technical problem, a kind of constant humidity of the present invention, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger and product is carried out to the drying chamber of shaping and drying, the inlet scoop of described blower fan communicates with the wind-supplying mouth on casing, the air outlet of blower fan aims at the heat exchanger of top, air outlet above described heat exchanger enters described drying chamber, return air inlet and exhaust outlet is provided with below drying chamber, described exhaust outlet leads to outside casing by exhaust duct, described return air inlet also communicates with the inlet scoop of blower fan, also comprise fresh air preheating device, the below of described fresh air preheating device is provided with new wind entrance, the top of fresh air preheating device is provided with pre-hot-blast outlet, the Lower Half of the exhaust duct access fresh air preheating device of loosening heat setting machine makes air draft and new wind carry out indirect heat exchange, described heat exchanger comprises high pressure heat exchanger stacked successively from top to bottom, middle pressure heat exchanger and low pressure heat exchanger, the entrance of described high pressure heat exchanger is connected with main feed header, the condensing water inlet of flash tank is pressed during the outlet of described high pressure heat exchanger is accessed by high pressure drain valve, the top of middle pressure flash tank is provided with middle compression set pressurized overflow valve, the outlet of middle compression set pressurized overflow valve accesses the entrance of described middle pressure heat exchanger by middle pressure flash distillation steam pipe, the outlet of middle pressure heat exchanger accesses the condensing water inlet of low pressure flash chamber by middle pressure drain valve, the top of low pressure flash chamber is provided with low pressure level pressure overflow valve, the outlet of low pressure level pressure overflow valve accesses the entrance of described low pressure heat exchanger by low pressure flash steam pipe, low pressure heat exchanger exit is by the entrance of low pressure drain valve access condensate pump, the first half that condensed water delivery side of pump accesses described fresh air preheating device makes condensed water and new wind carry out indirect heat exchange, the described wind-supplying mouth of the pre-hot-blast outlet access loosening heat setting machine of described fresh air preheating device.
Relative to prior art, the present invention achieves following beneficial effect: the Lower Half of the air draft access fresh air preheating device of (1) loosening heat setting machine carries out preliminary preheating to new wind, waste heat in air draft is recovered, and decrease thermal pollution and the heat loss of discharge, new air temperature is able to preliminary raising, (2) low pressure flash chamber and low pressure heat exchanger discharge low pressure condensed water and the new wind of preliminary preheating still there is the larger temperature difference, the first half of fresh air preheating device is sent into by condensate pump, preheating is again carried out to the new wind of preliminary preheating, sensible heat in low pressure condensed water is recovered, new air temperature is improved in rear feeding loosening heat setting machine again, reduces the steam consumption of heat exchanger in loosening heat setting machine, (3) traditional single heat exchanger is divided into high pressure heat exchanger stacked successively from top to bottom, middle pressure heat exchanger and low pressure heat exchanger, when Product Process needs high steam, only need to high pressure heat exchanger steam supply wherein, high steam becomes high pressure condensed water discharge latent heat in high pressure heat exchanger after, high pressure condensed water is dredged out by high pressure drain valve and is entered the flash distillation of middle pressure flash tank and become middle pressure flash steam, middle pressure flash steam is entered after middle pressure heat exchanger continues release latent heat by middle pressure flash distillation steam pipe becomes middle pressure condensed water, middle pressure condensed water is dredged out by middle pressure drain valve and is entered low pressure flash chamber flash distillation and become low pressure flash vapour, low pressure flash vapour is entered after low pressure heat exchanger discharges latent heat again by low pressure flash steam pipe becomes low pressure condensed water, low pressure condensed water is sent into fresh air preheating device by condensate pump and is continued release sensible heat, the condensate temperature that loosening heat setting machine finally discharges is very low, waste heat is fully reclaimed, (4) when Product Process needs to use middle pressure steam, high pressure heat exchanger and middle pressure heat exchanger all use the middle pressure steam of outer confession, press drain valve to enter low pressure flash chamber in the condensed water warp that high pressure heat exchanger and middle pressure heat exchanger produce, the low pressure flash vapour that low pressure flash chamber produces enters low pressure heat exchanger.(5) when Product Process needs to use low-pressure steam, high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger all use the low-pressure steam of outer confession, and the condensed water that high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger produce all enters condensate pump through low pressure drain valve.(6) when Product Process needs high steam, middle pressure heat exchanger and low pressure heat exchanger are without the need to using outer steam supply, the middle pressure that middle pressure flash tank and low pressure flash chamber produce and low pressure flash vapour use without the need to relying on external user, namely loosening heat setting machine self achieves the cascade utilization of flash distillation waste heat, avoids the emptying waste of middle pressure and low pressure flash vapour.In like manner, when Product Process needs middle pressure steam, low pressure heat exchanger is without the need to using outer steam supply, and the low pressure flash vapour that low pressure flash chamber produces is for the low pressure heat exchanger of loosening heat setting machine self.(7) when using high steam, new wind first through the air draft preheating that excess temperature is lower, then by the slightly high low pressure condensation water preheat of temperature, is then heated by the low pressure heat exchanger that temperature is higher, then press heat exchanger to heat in higher by temperature, finally heated by the high pressure heat exchanger that temperature is the highest; When using middle pressure steam, new wind first through the air draft preheating that excess temperature is lower, then by the slightly high low pressure condensation water preheat of temperature, is then heated by the low pressure heat exchanger that temperature is higher, presses heat exchanger and high pressure heat exchanger heating in then high by temperature; When using low-pressure steam, new wind first through the air draft preheating that excess temperature is lower, then by the slightly high low pressure condensation water preheat of temperature, is then heated by low pressure heat exchanger, middle pressure heat exchanger and high pressure heat exchanger that temperature is higher; In the process, the temperature of new wind improves step by step, and be also increase gradually to the temperature of the medium of its heating, the mode of this countercurrent flow totally maintains very high heat exchange efficiency.
As preferred version of the present invention, high-pressure steam pipe, middle pressure steam pipe are connected with main feed header with the 3rd stop valve respectively by the first stop valve, the second stop valve with low pressure steam pipe; Described main feed header is directly connected with the entrance of described high pressure heat exchanger, be connected with the entrance of described middle pressure heat exchanger by the 4th stop valve, be connected by the entrance of the 5th stop valve with described low pressure heat exchanger; Described middle pressure flash distillation steam pipe is provided with the 6th stop valve, and the outlet of described 6th stop valve is also connected with the entrance of described middle pressure heat exchanger; Described low pressure flash steam pipe is provided with the 7th stop valve, and the outlet of described 7th stop valve is also connected with the entrance of described low pressure heat exchanger; The outlet of described high pressure heat exchanger is provided with the 8th stop valve, and the rear of described 8th stop valve is in series with described high pressure drain valve; The outlet of described middle pressure heat exchanger is provided with the tenth stop valve, and the rear of described tenth stop valve is in series with described middle pressure drain valve; Between the entrance of described 8th stop valve and described tenth stop valve, cross-over connection has the 9th stop valve, and between described tenth stop valve and the entrance of described low pressure drain valve, cross-over connection has the 11 stop valve.(1) when Product Process needs to use high steam, open the first stop valve, the 6th stop valve, the 7th stop valve, the 8th stop valve and the tenth stop valve, close the second stop valve, the 3rd stop valve, the 4th stop valve, the 5th stop valve, the 9th stop valve and the 11 stop valve simultaneously; Now high pressure heat exchanger uses the high steam of outer confession, the condensed water of high pressure heat exchanger enters middle pressure flash tank through the 8th stop valve and high pressure drain valve, the middle pressure flash steam that middle pressure flash tank produces enters middle pressure heat exchanger, the condensed water of middle pressure heat exchanger enters low pressure flash chamber through the tenth stop valve and middle pressure drain valve, and the low pressure flash vapour that low pressure flash chamber produces enters low pressure heat exchanger.(2) when Product Process needs to use middle pressure steam, open the second stop valve, 4th stop valve, 7th stop valve, 9th stop valve and the tenth stop valve, close the first stop valve simultaneously, 3rd stop valve, 5th stop valve, 6th stop valve, 8th stop valve and the 11 stop valve, now high pressure heat exchanger and middle pressure heat exchanger all use the middle pressure steam of outer confession, the condensed water that high pressure heat exchanger produces is through the 9th stop valve, tenth stop valve and middle pressure drain valve enter low pressure flash chamber, the condensed water that middle pressure heat exchanger produces enters low pressure flash chamber through the tenth stop valve and middle pressure drain valve, the low pressure flash vapour that low pressure flash chamber produces enters low pressure heat exchanger.(3) when Product Process needs to use low-pressure steam, open the 3rd stop valve, 4th stop valve, 5th stop valve, 9th stop valve and the 11 stop valve, close the first stop valve simultaneously, second stop valve, 6th stop valve, 7th stop valve, 8th stop valve and the tenth stop valve, now high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger all use the low-pressure steam of outer confession, the condensed water that high pressure heat exchanger produces is through the 9th stop valve, 11 stop valve and low pressure drain valve enter condensate pump, the condensed water that middle pressure heat exchanger produces enters condensate pump through the 11 stop valve and low pressure drain valve, the condensed water that low pressure heat exchanger produces directly enters condensate pump through low pressure drain valve.By the switching of valve, no matter Product Process needs high pressure, middle pressure or low-pressure steam, and heat exchanger is gross area use, drain valve all in design conditions work, and loosening heat setting machine self just can realize the cascade utilization of condensation water residual heat.
As preferred version of the present invention, the exhaust duct of described loosening heat setting machine is provided with the air draft control valve being controlled by PLC, described drying chamber is provided with humidity sensor, the holding wire of described humidity sensor accesses described PLC, and described PLC regulates the aperture of air draft control valve according to the moisture signal that described humidity sensor provides.The moisture of drying interior products is constantly evaporated, drying chamber relative humidity constantly raises, too high humidity will hinder the continuation evaporation of moisture on product, humid air must be discharged outside casing by means of air draft, the too large heat then with air draft loss of aperture of air draft control valve is too much, the aperture of air draft control valve is too little, humidity then in drying chamber does not reach requirement, the humidity of the drying chamber provided by humidity sensor by PLC adjusts the aperture of air draft control valve, accurate control can be realized, both ensure product quality, reduce again air exhaust heat loss.
As preferred version of the present invention, the condensation-water drain of described middle pressure flash tank bottom is provided with in basis presses the pressure of flash tank automatically to regulate the front pressure automatic regulating valve of aperture, and before described, the outlet of pressure automatic regulating valve accesses the entrance of described low pressure flash chamber.Front pressure automatic regulating valve according in press the pressure of flash tank height automatically regulate aperture, flow between middle pressure flash tank and low pressure flash chamber can be regulated by front pressure control valve, when the pressure of middle pressure flash tank is higher than setting value, front pressure control valve opening increases, and the flow between middle pressure flash tank and low pressure flash chamber increases; When the pressure of middle pressure flash tank is lower than setting value, front pressure control valve opening reduces, and the flow between middle pressure flash tank and low pressure flash chamber reduces.
As preferred version of the present invention, the condensation-water drain of described low pressure flash chamber bottom accesses the entrance of described condensate pump.
As preferred version of the present invention, the front and back of described high pressure drain valve, middle pressure drain valve and low pressure drain valve are in series with front stop valve and rear stop valve respectively, are parallel with bypass stop valve between the entrance of described front stop valve and the outlet of rear stop valve.Front stop valve and rear stop valve are normally in opening, when drain valve occurs that damage needs to change, close front stop valve and rear stop valve, open bypass stop valve, can change drain valve when not breaks in production.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, and accompanying drawing only provides reference and explanation use, is not used to limit the present invention.
Fig. 1 is the schematic diagram that constant humidity of the present invention, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine.
In figure: S1. high-pressure steam pipe; S2. middle pressure steam pipe; S3. low pressure steam pipe; S4. main feed header; S5. pressure flash distillation steam pipe in; S6. low pressure flash steam pipe; E1. high pressure heat exchanger; E2. pressure heat exchanger in; E3. low pressure heat exchanger; E4. fresh air preheating device; W1. high pressure draining pipe; W2. pressure drain pipe in; W3. low pressure drain pipe; W4. cryogenic condensation water 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; V10. the tenth stop valve; V11. the 11 stop valve; Vk. air draft control valve; Vq. pressure automatic regulating valve before; Vd1. middle compression set pressurized overflow valve; Vd2. low pressure level pressure overflow valve; Vt1. high pressure drain valve; Vt2. pressure drain valve in; Vt3. low pressure drain valve; D1. pressure flash tank in; D2. low pressure flash chamber; P1. condensate pump; F1. new wind; F2. pre-hot blast; F3. wind is mixed; F4. hot blast; F5. return air; F6. air draft; Fy. blower fan; H1. humidity sensor.
Detailed description of the invention
As shown in Figure 1, constant humidity of the present invention, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, the cabinets cavity of loosening heat setting machine is provided with blower fan Fy, drying chamber and heat exchanger, fresh air preheating device E4 is provided with outside casing, the inlet scoop of blower fan Fy communicates with the wind-supplying mouth on casing, the air outlet of blower fan Fy aims at the heat exchanger of top, air outlet above heat exchanger enters drying chamber, return air inlet and exhaust outlet is provided with below drying chamber, exhaust outlet is led to outside casing by exhaust duct, and return air inlet also communicates with the inlet scoop of blower fan Fy.
The exhaust duct of loosening heat setting machine is provided with the air draft control valve Vk being controlled by PLC, drying chamber is provided with humidity sensor H1, the holding wire access PLC of humidity sensor H1, PLC regulates the aperture of air draft control valve Vk according to the moisture signal that humidity sensor H1 provides.Discharge after the Lower Half of exhaust duct access fresh air preheating device E4 makes air draft F6 and new wind F1 carry out indirect heat exchange.The first half of the outlet access fresh air preheating device E4 of condensate pump P1 makes condensed water and new wind carry out further indirect heat exchange, the below of fresh air preheating device E4 is provided with new wind entrance, the top of fresh air preheating device E4 is provided with pre-hot-blast outlet, the wind-supplying mouth of pre-hot-blast outlet access loosening heat setting machine.In fresh air preheating device E4 the air draft runner of Lower Half and the low pressure condensation water flow passage of the first half not connected, in fresh air preheating device E4 the new distinguished and admirable road of Lower Half and the new distinguished and admirable road of the first half through.
The Lower Half of the air draft F6 access fresh air preheating device E4 of loosening heat setting machine carries out preliminary preheating to new wind F1, and the waste heat in air draft F6 is recovered, and new wind F1 temperature is able to preliminary raising; Then the low pressure condensed water sent here from condensate pump P1 carries out preheating again to new wind becomes preheating wind F2, discharged by cryogenic condensation water pipe W4 after sensible heat in low pressure condensed water is recovered, new air temperature is improved the wind-supplying mouth of rear feeding loosening heat setting machine again.The pre-hot blast F2 entered from wind-supplying mouth and the return air F5 of drying chamber enters the inlet scoop of blower fan Fy jointly, the wind that blower fan Fy blows out becomes hot blast F4 and enters drying chamber after heat exchanger heating, a humid air part in drying chamber is discharged by exhaust duct as air draft, and another part participates in circulation as return air F5.
Heat exchanger comprises high pressure heat exchanger E1 stacked successively from top to bottom, middle pressure heat exchanger E2 and low pressure heat exchanger E3.Mixing wind F3 is blown out by blower fan Fy, and when Product Process needs to use high steam, mixing wind F3 first heats through the low pressure heat exchanger E3 that excess temperature is higher, presses heat exchanger E2 to heat, finally heated by the high pressure heat exchanger E1 that temperature is the highest in then high by temperature; When Product Process needs to use middle pressure steam, mixing wind F3 first heats through the low pressure heat exchanger E3 that excess temperature is higher, presses heat exchanger E2 and high pressure heat exchanger E1 to heat in then high by temperature.In the process, the temperature of air improves step by step, is also increase gradually to the vapor (steam) temperature of its heating.
High-pressure steam pipe S1, middle pressure steam pipe S2 are connected with main feed header S4 with the 3rd stop valve V3 respectively by the first stop valve V1, the second stop valve V2 with low pressure steam pipe S3.Main feed header S4 is directly connected with the entrance of high pressure heat exchanger E1, be connected with the entrance of middle pressure heat exchanger E2 by the 4th stop valve V4, be connected with the entrance of low pressure heat exchanger E3 by the 5th stop valve V5.
The high pressure draining pipe W1 that high pressure heat exchanger E1 exports is in series with the 8th stop valve V8 and high pressure drain valve Vt1 successively, the condensing water inlet of flash tank D1 is pressed in the outlet access of high pressure drain valve Vt1, the top of middle pressure flash tank D1 is provided with middle compression set pressurized overflow valve Vd1, the outlet of middle compression set pressurized overflow valve Vd1 is by pressing the entrance of heat exchanger E2 in middle pressure flash distillation steam pipe S5 access, middle pressure flash distillation steam pipe S5 is provided with the 6th stop valve V6.
The middle pressure drain pipe W2 that middle pressure heat exchanger E2 exports is in series with the tenth stop valve V10 and middle pressure drain valve Vt2 successively, the condensing water inlet of the outlet access low pressure flash chamber D2 of middle pressure drain valve Vt2, the top of low pressure flash chamber D2 is provided with low pressure level pressure overflow valve Vd2, the outlet of low pressure level pressure overflow valve Vd2 accesses the entrance of low pressure heat exchanger E3 by low pressure flash steam pipe S6, low pressure flash steam pipe S6 is provided with the 7th stop valve V7.
The low pressure drain pipe W3 that low pressure heat exchanger E3 exports is provided with low pressure drain valve Vt3, the entrance of the outlet access condensate pump P1 of low pressure drain valve Vt3.Between the entrance of the 8th stop valve V8 and the tenth stop valve V10, cross-over connection has the 9th stop valve V9, and between the entrance of the tenth stop valve V10 and low pressure drain valve Vt3, cross-over connection has the 11 stop valve V11.
The condensation-water drain of middle pressure flash tank D1 bottom is provided with in basis presses the pressure of flash tank D1 automatically to regulate the front pressure automatic regulating valve Vq of aperture, the entrance of the outlet access low pressure flash chamber D2 of front pressure automatic regulating valve Vq.Front pressure automatic regulating valve Vq according in press the pressure of flash tank D1 height automatically regulate aperture, flow between middle pressure flash tank D1 and low pressure flash chamber D2 can be regulated by front pressure control valve, when the pressure of middle pressure flash tank D1 is higher than setting value, front pressure control valve opening increases, and the flow between middle pressure flash tank D1 and low pressure flash chamber D2 increases; When the pressure of middle pressure flash tank D1 is lower than setting value, front pressure control valve opening reduces, and the flow between middle pressure flash tank D1 and low pressure flash chamber D2 reduces.The entrance of the condensation-water drain access condensate pump P1 of low pressure flash chamber D2 bottom.
The front and back of high pressure drain valve Vt1, middle pressure drain valve Vt2 and low pressure drain valve Vt3 are in series with front stop valve and rear stop valve respectively, are parallel with bypass stop valve between the entrance of front stop valve and the outlet of rear stop valve.
When Product Process needs to use high steam, open the first stop valve V1, the 6th stop valve V6, the 7th stop valve V7, the 8th stop valve V8 and the tenth stop valve V10, close the second stop valve V2, the 3rd stop valve V3, the 4th stop valve V4, the 5th stop valve V5, the 9th stop valve V9 and the 11 stop valve V11 simultaneously; Now high pressure heat exchanger E1 uses the high steam of outer confession, the condensed water of high pressure heat exchanger E1 enters middle pressure flash tank D1 through the 8th stop valve V8 and high pressure drain valve Vt1, the middle pressure flash steam that middle pressure flash tank D1 produces enters middle pressure heat exchanger E2, the condensed water of middle pressure heat exchanger E2 enters low pressure flash chamber D2 through the tenth stop valve V10 and middle pressure drain valve Vt2, and the low pressure flash vapour that low pressure flash chamber D2 produces enters low pressure heat exchanger E3.
When Product Process needs to use middle pressure steam, open the second stop valve V2, 4th stop valve V4, 7th stop valve V7, 9th stop valve V9 and the tenth stop valve V10, close the first stop valve V1 simultaneously, 3rd stop valve V3, 5th stop valve V5, 6th stop valve V6, 8th stop valve V8 and the 11 stop valve V11, now high pressure heat exchanger E1 and middle pressure heat exchanger E2 all uses the middle pressure steam of outer confession, the condensed water that high pressure heat exchanger E1 produces is through the 9th stop valve V9, tenth stop valve V10 and middle pressure drain valve Vt2 enters low pressure flash chamber D2, the condensed water that middle pressure heat exchanger E2 produces enters low pressure flash chamber D2 through the tenth stop valve V10 and middle pressure drain valve Vt2, the low pressure flash vapour that low pressure flash chamber D2 produces enters low pressure heat exchanger E3.
When Product Process needs to use low-pressure steam, open the 3rd stop valve V3, 4th stop valve V4, 5th stop valve V5, 9th stop valve V9 and the 11 stop valve V11, close the first stop valve V1 simultaneously, second stop valve V2, 6th stop valve V6, 7th stop valve V7, 8th stop valve V8 and the tenth stop valve V10, now high pressure heat exchanger E1, middle pressure heat exchanger E2 and low pressure heat exchanger E3 all uses the low-pressure steam of outer confession, the condensed water that high pressure heat exchanger E1 produces is through the 9th stop valve V9, 11 stop valve V11 and low pressure drain valve Vt3 enters condensate pump P1, the condensed water that middle pressure heat exchanger E2 produces enters condensate pump P1 through the 11 stop valve V11 and low pressure drain valve Vt3, the condensed water that low pressure heat exchanger E3 produces directly enters condensate pump P1 through low pressure drain valve Vt3.
The foregoing is only the better possible embodiments of the present invention, non-ly therefore 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 application claims.
Claims (2)
1. a constant humidity, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, the cabinets cavity of loosening heat setting machine is provided with blower fan, heat exchanger and product is carried out to the drying chamber of shaping and drying, the inlet scoop of described blower fan communicates with the wind-supplying mouth on casing, the air outlet of blower fan aims at the heat exchanger of top, air outlet above described heat exchanger enters described drying chamber, return air inlet and exhaust outlet is provided with below drying chamber, described exhaust outlet leads to outside casing by exhaust duct, described return air inlet also communicates with the inlet scoop of blower fan, it is characterized in that: also comprise fresh air preheating device, the below of described fresh air preheating device is provided with new wind entrance, the top of fresh air preheating device is provided with pre-hot-blast outlet, the Lower Half of the exhaust duct access fresh air preheating device of loosening heat setting machine makes air draft and new wind carry out indirect heat exchange, described heat exchanger comprises high pressure heat exchanger stacked successively from top to bottom, middle pressure heat exchanger and low pressure heat exchanger, the entrance of described high pressure heat exchanger is connected with main feed header, the condensing water inlet of flash tank is pressed during the outlet of described high pressure heat exchanger is accessed by high pressure drain valve, the top of middle pressure flash tank is provided with middle compression set pressurized overflow valve, the outlet of middle compression set pressurized overflow valve accesses the entrance of described middle pressure heat exchanger by middle pressure flash distillation steam pipe, the outlet of middle pressure heat exchanger accesses the condensing water inlet of low pressure flash chamber by middle pressure drain valve, the top of low pressure flash chamber is provided with low pressure level pressure overflow valve, the outlet of low pressure level pressure overflow valve accesses the entrance of described low pressure heat exchanger by low pressure flash steam pipe, low pressure heat exchanger exit is by the entrance of low pressure drain valve access condensate pump, the first half that condensed water delivery side of pump accesses described fresh air preheating device makes condensed water and new wind carry out indirect heat exchange, the described wind-supplying mouth of the pre-hot-blast outlet access loosening heat setting machine of described fresh air preheating device, high-pressure steam pipe, middle pressure steam pipe are connected with main feed header with the 3rd stop valve respectively by the first stop valve, the second stop valve with low pressure steam pipe, described main feed header is directly connected with the entrance of described high pressure heat exchanger, be connected with the entrance of described middle pressure heat exchanger by the 4th stop valve, be connected by the entrance of the 5th stop valve with described low pressure heat exchanger, described middle pressure flash distillation steam pipe is provided with the 6th stop valve, and the outlet of described 6th stop valve is also connected with the entrance of described middle pressure heat exchanger, described low pressure flash steam pipe is provided with the 7th stop valve, and the outlet of described 7th stop valve is also connected with the entrance of described low pressure heat exchanger, the outlet of described high pressure heat exchanger is provided with the 8th stop valve, and the rear of described 8th stop valve is in series with described high pressure drain valve, the outlet of described middle pressure heat exchanger is provided with the tenth stop valve, and the rear of described tenth stop valve is in series with described middle pressure drain valve, between the entrance of described 8th stop valve and described tenth stop valve, cross-over connection has the 9th stop valve, and between described tenth stop valve and the entrance of described low pressure drain valve, cross-over connection has the 11 stop valve.
2. constant humidity according to claim 1, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, it is characterized in that: the exhaust duct of described loosening heat setting machine is provided with the air draft control valve being controlled by PLC, described drying chamber is provided with humidity sensor, the holding wire of described humidity sensor accesses described PLC, and described PLC regulates the aperture of air draft control valve according to the moisture signal that described humidity sensor provides.
3. constant humidity according to claim 1, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, it is characterized in that: the condensation-water drain of described middle pressure flash tank bottom is provided with in basis presses the pressure of flash tank automatically to regulate the front pressure automatic regulating valve of aperture, before described, the outlet of pressure automatic regulating valve accesses the entrance of described low pressure flash chamber.
4. constant humidity according to claim 1, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, it is characterized in that: the condensation-water drain of described low pressure flash chamber bottom accesses the entrance of described condensate pump.
5. constant humidity according to any one of claim 1 to 4, condensed water flash and sensible heat and air exhaust waste heat reclaim loosening heat setting machine, it is characterized in that: the front and back of described high pressure drain valve, middle pressure drain valve and low pressure drain valve are in series with front stop valve and rear stop valve respectively, are parallel with bypass stop valve between the entrance of described front stop valve and the outlet of rear stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034948.4A CN103060990B (en) | 2013-01-30 | 2013-01-30 | Constant-humidity relaxation heat setting machine for condensate water flashing and sensible heat and exhaust afterheat recovering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034948.4A CN103060990B (en) | 2013-01-30 | 2013-01-30 | Constant-humidity relaxation heat setting machine for condensate water flashing and sensible heat and exhaust afterheat recovering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103060990A CN103060990A (en) | 2013-04-24 |
| CN103060990B true CN103060990B (en) | 2015-05-06 |
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| CN201310034948.4A Active CN103060990B (en) | 2013-01-30 | 2013-01-30 | Constant-humidity relaxation heat setting machine for condensate water flashing and sensible heat and exhaust afterheat recovering |
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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 |
| CN203080167U (en) * | 2013-01-30 | 2013-07-24 | 云南能投有能科技有限公司 | Constant humidity slack heat forming machine for condensate water latent heat and sensible heat and air exhaust waste heat recovery |
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| CN2127480Y (en) * | 1992-07-08 | 1993-02-24 | 李连群 | Air heater of drying tower |
| CN2342342Y (en) * | 1998-05-27 | 1999-10-06 | 薛翔 | Steam ejecting graded heat supply device |
| EP1076218A1 (en) * | 1999-08-11 | 2001-02-14 | EISENMANN MASCHINENBAU KG (Komplementär: EISENMANN-Stiftung) | Dryer for a painting installation |
| JP2004076971A (en) * | 2002-08-12 | 2004-03-11 | Kazuhiko Tanizaki | Method and device for generating hot water and cooling water for use in drying device |
| CN201731732U (en) * | 2010-07-09 | 2011-02-02 | 中钢集团洛阳耐火材料研究院有限公司 | Energy-saving fiber drying kiln |
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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 |
| CN203080167U (en) * | 2013-01-30 | 2013-07-24 | 云南能投有能科技有限公司 | Constant humidity slack heat forming machine for condensate water latent heat and sensible heat and air exhaust waste heat recovery |
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| CN103060990A (en) | 2013-04-24 |
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Address after: 650041 Yunnan city of Kunming Province Spring City Road No. 219 Building Room 903 Eastern Investment Applicant after: YUNNAN PROVINCIAL ENERGY INVESTMENT GROUP YOUNENG SCIENCE & TECHNOLOGY CO., LTD. Address before: 650106, No. two, No. A3-505-1, Yunnan Science Park, Kunming hi tech Zone, Yunnan hi tech Zone, Yunnan Overseas Students Pioneer Park Applicant before: Yunnan Nengtou Youneng Technology Co., Ltd. |
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