CN203174268U - Return-air-free relaxation heat-setting machine for flash and sensible heat of condensate water and waste heat recovery of exhaust air - Google Patents
Return-air-free relaxation heat-setting machine for flash and sensible heat of condensate water and waste heat recovery of exhaust air Download PDFInfo
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- CN203174268U CN203174268U CN2013200369977U CN201320036997U CN203174268U CN 203174268 U CN203174268 U CN 203174268U CN 2013200369977 U CN2013200369977 U CN 2013200369977U CN 201320036997 U CN201320036997 U CN 201320036997U CN 203174268 U CN203174268 U CN 203174268U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a return-air-free relaxation heat-setting machine for flash and sensible heat of condensate water and waste heat recovery of exhaust air. 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 to a medium-pressure flash tank through a high-pressure drain valve, a medium-pressure constant-pressure overflow valve is arranged at the top of the medium-pressure flash tank, an outlet of the medium-pressure constant-pressure overflow valve is connected to an inlet of a medium-pressure heat exchanger through a medium-pressure flash steam pipe, an outlet of the medium-pressure heat exchanger is connected to a low-temperature flash tank through a medium-pressure drain valve, a low-pressure constant-pressure overflow valve is arranged at the top of the low-temperature flash tank, an outlet of the low-pressure constant-pressure overflow valve is connected to a low-temperature heat exchanger through a low-pressure flash steam pipe, an outlet of the low-temperature heat exchanger is connected to a condensate pump through a low-pressure drain valve, an outlet of the condensate pump is connected to a fresh air preheater, a preheated air outlet of the fresh air preheater is connected to an air supplement port of the relaxation heat-setting machine, and the exhaust air of the relaxation heat-setting machine is led to the fresh air preheater to indirectly exchange heat with fresh air. The setting machine can make full use of waste heat of the exhaust air and condensate water, and is high in heat efficiency.
Description
Technical field
The utility model relates to a kind of relaxation heat setting machine, particularly the no return air relaxation heat setting machine of a kind of condensed water flash and sensible heat and air draft waste heat recovery.
Background technology
The relaxation heat setting machine is often used in the post processing of polyester staple fiber, the cabinets cavity of relaxation 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 the 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 the casing by exhaust duct, hand control valve is installed on the exhaust duct, and return air inlet also communicates with the inlet scoop of blower fan.Entering new wind in the 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 dries, and a part of wind enters exhaust outlet by air draft then, 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 link to each other with main feed header by stop valve respectively, and main feed header links to each other with the entrance of heat exchanger, and the outlet conduit of heat exchanger is provided with drain valve.
The weak point of this relaxation heat setting machine is: (1) is according to the product difference, with steam pressure Three Estate is arranged, a drain valve but only is installed, drain valve can only be under some pressure operate as normal, when non-design pressure state, can not keep the required pressure reduction of operate as normal, or discharge capacity is not enough, or steam leakage is serious.(2) waste heat of condensed water that drain valve is arranged needs external user to be used, and when no suitable user, is drained waste inevitably.(3) pollutant that carries of return air very easily in the heat exchanger deposition, worsens heat exchange efficiency.(4) even the condensed water waste heat is flashed utilization, the condensate temperature of discharging still has 130 ℃～150 ℃, and the waste heat loss amount is big.(5) high temperature air draft waste heat does not utilize, and exhaust air rate is manually controlled, and discharge capacity randomness is big.
The utility model content
The purpose of this utility model is, overcome problems of the prior art, the no return air relaxation heat setting machine of a kind of condensed water flash and sensible heat and air draft waste heat recovery is provided, no matter product uses high pressure, middle pressure or low-pressure steam, relaxation heat setting machine self all can realize waste heat step, take full advantage of, and avoided the incrustation of heat exchanger in the relaxation heat setting machine.
For solving above technical problem, the no return air relaxation heat setting machine of a kind of condensed water flash of the present utility model and sensible heat and air draft waste heat recovery, the cabinets cavity of relaxation 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 the 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 the casing by exhaust duct, also comprise new wind preheater, the below of described new wind preheater is provided with new wind entrance, the top of new wind preheater is provided with pre-hot blast outlet, and the Lower Half that the exhaust duct of relaxation heat setting machine inserts new wind preheater makes air draft and new wind carry out indirect heat exchange; Described heat exchanger comprises from top to bottom stacked successively high pressure heat exchanger, middle heat exchanger and the low pressure heat exchanger of pressing, the entrance of described high pressure heat exchanger links to each other with main feed header, during inserting by the high pressure drain valve, the outlet of described high pressure heat exchanger presses the condensing water inlet of flash tank, the middle top of flash tank of pressing is provided with middle compression set pressurized overflow valve, the outlet of middle compression set pressurized overflow valve inserts described middle entrance of pressing heat exchanger by middle pressure flash distillation steam pipe, the outlet of middle pressure heat exchanger inserts 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 inserts the entrance of described low pressure heat exchanger by the low pressure flash steam pipe, the low pressure heat exchanger exit inserts the entrance of condensate pump by the low pressure drain valve, the first half that the condensed water delivery side of pump inserts described new wind preheater makes condensed water and new wind carry out indirect heat exchange, and the pre-hot blast outlet of described new wind preheater inserts the described wind-supplying mouth of relaxation heat setting machine.
With respect to prior art, the utility model has been obtained following beneficial effect: (1) return air does not participate in circulation, has avoided the incrustation of return air entrainment heat exchanger surface in setting machine, has increased heat exchange efficiency, has prolonged the time between overhauls(TBO); (2) air draft of the relaxation heat setting machine Lower Half that inserts new wind preheater is carried out preliminary preheating to new wind, and the waste heat in the air draft is recovered, and has reduced thermal pollution and the heat loss of discharging, and new wind-warm syndrome degree is able to preliminary raising; (3) still there is the big temperature difference in the low pressure condensed water of low pressure flash chamber and low pressure heat exchanger discharging with the preliminary new wind of preheating, sent into the first half of new wind preheater by condensate pump, the new wind of preliminary preheating is carried out preheating again, sensible heat in the low pressure condensed water is recovered, send in the relaxation heat setting machine after new wind-warm syndrome degree is improved again, reduced the steam consumption of heat exchanger in the relaxation heat setting machine; (4) traditional single heat exchanger is divided into from top to bottom stacked successively high pressure heat exchanger, middle pressure heat exchanger and low pressure heat exchanger; When product arts demand high steam, only need to high pressure heat exchanger steam supply wherein, high steam becomes the high pressure condensed water discharge latent heat in high pressure heat exchanger after, the high pressure condensed water is dredged out by the high pressure drain valve and is pressed in entering the flash tank flash distillation to press flash steam in becoming, during entering by middle pressure flash distillation steam pipe, middle pressure flash steam press heat exchanger to continue to become the middle condensed water of pressing behind the release latent heat, in press condensed water to be dredged out by middle pressure drain valve to enter the low pressure flash chamber flash distillation and become low pressure flash vapour, low pressure flash vapour enters by the low pressure flash steam pipe becomes the low pressure condensed water after the low pressure heat exchanger discharges latent heat again, the low pressure condensed water is sent into new wind preheater by condensate pump and is continued to discharge sensible heat, the condensate temperature of the final discharging of relaxation heat setting machine is very low, and waste heat is fully reclaimed; (5) when the product arts demand uses 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 the low pressure heat exchanger.(6) when the product arts demand uses 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 the low pressure drain valve.(7) when product arts demand high steam, middle heat exchanger and the low pressure heat exchanger of pressing need not to use outer steam supply, middle middle pressure and low pressure flash vapour of pressing flash tank and low pressure flash chamber to produce need not to rely on external user to use, relaxation heat setting machine self has namely been realized the cascade utilization of flash distillation waste heat, has avoided the emptying waste of middle pressure and low pressure flash vapour.In like manner, when product arts demand middle pressure steam, the low pressure heat exchanger need not to use outer steam supply, and the low pressure flash vapour that low pressure flash chamber produces uses for the low pressure heat exchanger of relaxation heat setting machine self.When (8) using high steam, new wind is earlier through the lower air draft preheating of excess temperature, again by the high slightly low pressure condensation water preheat of temperature, then by the higher low pressure heat exchanger heating of temperature, then by the higher middle pressure heat exchanger heating of temperature, at last by the highest high pressure heat exchanger heating of temperature; When using middle pressure steam, new wind is earlier through the lower air draft preheating of excess temperature, again by the high slightly low pressure condensation water preheat of temperature, then by the higher low pressure heat exchanger heating of temperature, then by temperature higher middle pressure heat exchanger and high pressure heat exchanger heating; When using low-pressure steam, new wind is earlier through the lower air draft preheating of excess temperature, again by the high slightly low pressure condensation water preheat of temperature, then by the higher low pressure heat exchanger of temperature, middle pressure heat exchanger and high pressure heat exchanger heating; In this process, the temperature of new wind improves step by step, also is 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.
As preferred version of the present utility model, high-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe link to each other with main feed header by first stop valve, second stop valve and the 3rd stop valve respectively; Described main feed header directly links to each other with the entrance of described high pressure heat exchanger, links to each other, links to each other with the entrance of described low pressure heat exchanger by the 5th stop valve with the entrance of described middle pressure heat exchanger by the 4th stop valve; Press the flash distillation steam pipe to be provided with the 6th stop valve in described, the outlet of described the 6th stop valve also links to each other with the described middle entrance of heat exchanger of pressing; Described low pressure flash steam pipe is provided with the 7th stop valve, and the outlet of described the 7th stop valve also links to each other 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 the 8th stop valve is in series with described high pressure drain valve; Press the outlet of heat exchanger to be provided with the tenth stop valve in described, the rear of described the tenth stop valve is in series with the described middle drain valve of pressing; Cross-over connection has the 9th stop valve between the entrance of described the 8th stop valve and described the tenth stop valve, and cross-over connection has the 11 stop valve between the entrance of described the tenth stop valve and described low pressure drain valve.(1) when the product arts demand uses high steam, open first stop valve, the 6th stop valve, the 7th stop valve, the 8th stop valve and the tenth stop valve, close 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; What this moment, high pressure heat exchanger used is the high steam of outer confession, the condensed water of high pressure heat exchanger is pressed flash tank in the 8th stop valve and high pressure drain valve enter, during entering, middle middle pressure flash steam of pressing flash tank to produce presses heat exchanger, the middle condensed water of heat exchanger of pressing 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 the low pressure heat exchanger.(2) when the product arts demand uses middle pressure steam, open second stop valve, the 4th stop valve, the 7th stop valve, the 9th stop valve and the tenth stop valve, close first stop valve simultaneously, the 3rd stop valve, the 5th stop valve, the 6th stop valve, the 8th stop valve and the 11 stop valve, this moment, high pressure heat exchanger and middle pressure heat exchanger all used the middle pressure steam of outer confession, the condensed water that high pressure heat exchanger produces is through the 9th stop valve, the tenth stop valve and middle pressure drain valve enter low pressure flash chamber, middle condensed water of pressing heat exchanger to produce 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 the low pressure heat exchanger.(3) when the product arts demand uses low-pressure steam, open the 3rd stop valve, the 4th stop valve, the 5th stop valve, the 9th stop valve and the 11 stop valve, close first stop valve simultaneously, second stop valve, the 6th stop valve, the 7th stop valve, the 8th stop valve and the tenth stop valve, this moment high pressure heat exchanger, middle low-pressure steam of pressing heat exchanger and low pressure heat exchanger all to use outer confession, the condensed water that high pressure heat exchanger produces is through the 9th stop valve, the 11 stop valve and low pressure drain valve enter condensate pump, middle condensed water of pressing heat exchanger to produce enters condensate pump through the 11 stop valve and low pressure drain valve, and the condensed water that the low pressure heat exchanger produces directly enters condensate pump through the low pressure drain valve.By the switching of valve, no matter product arts demand high pressure, middle pressure or low-pressure steam, heat exchanger are that gross area uses, drain valve is all in design conditions work, and relaxation heat setting machine self just can be realized the cascade utilization of condensed water waste heat.
As preferred version of the present utility model, the condensation-water drain of described middle pressure flash tank bottom is equipped with presses the pressure of flash tank to regulate the preceding pressure automatic regulating valve of aperture automatically in the basis, the outlet of described preceding pressure automatic regulating valve inserts the entrance of described low pressure flash chamber.The preceding automatic aperture of regulating of the pressure height of pressing flash tank in the automatic regulating valve basis of pressing, flow between middle pressure flash tank and the low pressure flash chamber can be regulated by preceding pressure control valve, the middle pressure of flash tank of pressing is higher than when setting value, the preceding control valve opening of pressing increases, and the flow between middle pressure flash tank and the low pressure flash chamber increases; The middle pressure of flash tank of pressing is lower than when setting value, and preceding pressure control valve opening reduces, and the flow between middle pressure flash tank and the low pressure flash chamber reduces.
As preferred version of the present utility model, the condensation-water drain of described low pressure flash chamber bottom inserts the entrance of described condensate pump.
As preferred version of the present utility model, stop valve and back stop valve before the front and back of described high pressure drain valve, middle pressure drain valve and low pressure drain valve are in series with respectively are parallel with the bypass stop valve between the outlet of the entrance of described preceding stop valve and back stop valve.Before stop valve and back stop valve normally be in opening, when drain valve occur to damage need was changed, stop valve and back stop valve were opened the bypass stop valve before closing, and can change drain valve under the situation of breaks in production not.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, accompanying drawing only provides reference and explanation usefulness, and is non-in order to limit the utility model.
Fig. 1 is the schematic diagram of the no return air relaxation heat setting machine of the utility model condensed water flash and sensible heat and air draft waste heat recovery.
Among the figure: the S1. high-pressure steam pipe; S2. middle pressure steam pipe; S3. low pressure steam pipe; S4. main feed header; S5. press the flash distillation steam pipe in; S6. low pressure flash steam pipe; E1. high pressure heat exchanger; E2. press heat exchanger in; E3. low pressure heat exchanger; E4. new wind preheater; W1. high pressure drain pipe; W2. press drain pipe in; W3. low pressure drain pipe; W4. cryogenic condensation water pipe; V1. first stop valve; V2. 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; Vq. press automatic regulating valve before; Vd1. middle compression set pressurized overflow valve; Vd2. low pressure level pressure overflow valve; Vt1. high pressure drain valve; Vt2. press drain valve in; Vt3. low pressure drain valve; D1. press flash tank in; D2. low pressure flash chamber; 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 no return air relaxation heat setting machine of the utility model condensed water flash and sensible heat and air draft waste heat recovery, the cabinets cavity of relaxation heat setting machine is provided with blower fan Fy, drying chamber and heat exchanger, casing is provided with new wind preheater E4 outward, the inlet scoop of blower fan Fy communicates with wind-supplying mouth on the casing, and the air outlet of blower fan Fy is aimed at the heat exchanger of top, and the air outlet of heat exchanger top enters drying chamber, the drying chamber below is provided with exhaust outlet, and exhaust outlet leads to outside the casing by exhaust duct.
The Lower Half that exhaust duct inserts new wind preheater E4 makes air draft F6 and new wind F1 carry out discharging behind the indirect heat exchange.The first half that the outlet of condensate pump P1 inserts new wind preheater E4 makes condensed water and new wind carry out further indirect heat exchange, the below of new wind preheater E4 is provided with new wind entrance, the top of new wind preheater E4 is provided with pre-hot blast outlet, and pre-hot blast outlet inserts the wind-supplying mouth of relaxation heat setting machine.The low pressure condensation water flow passage of the air draft runner of Lower Half and the first half is not connected among the new wind preheater E4, and the new distinguished and admirable road of the new distinguished and admirable road of Lower Half and the first half connects among the new wind preheater E4.
The air draft F6 of relaxation heat setting machine inserts the Lower Half of new wind preheater E4 new wind F1 is carried out preliminary preheating, and the waste heat among the air draft F6 is recovered, and new wind F1 temperature is able to preliminary raising; Then the low pressure condensed water of sending here from condensate pump P1 carries out preheating again to new wind becomes preheating wind F2, sensible heat in the low pressure condensed water is recovered the back and discharges by cryogenic condensation water pipe W4, sends into the wind-supplying mouth of relaxation heat setting machine after new wind-warm syndrome degree is improved again.The pre-hot blast F2 that enters from wind-supplying mouth 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 the heat exchanger heating, and the humid air in the drying chamber is discharged by exhaust duct.
Heat exchanger comprises from top to bottom stacked successively high pressure heat exchanger E1, middle pressure heat exchanger E2 and low pressure heat exchanger E3.Mix wind and blown out by blower fan Fy, when the product arts demand uses high steam, mix wind earlier through the higher low pressure heat exchanger E3 heating of excess temperature, then by the higher middle pressure heat exchanger E2 heating of temperature, at last by the highest high pressure heat exchanger E1 heating of temperature; When the product arts demand uses middle pressure steam, mix wind earlier through the higher low pressure heat exchanger E3 heating of excess temperature, then by temperature higher middle pressure heat exchanger E2 and high pressure heat exchanger E1 heating.In this process, the temperature of air improves step by step, also is to increase gradually to the vapor (steam) temperature of its heating.
High-pressure steam pipe S1, middle pressure steam pipe S2 link to each other 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.Main feed header S4 directly links to each other with the entrance of high pressure heat exchanger E1, links to each other with the entrance of middle pressure heat exchanger E2, links to each other with the entrance of low pressure heat exchanger E3 by the 5th stop valve V5 by the 4th stop valve V4.
Be in series with the 8th stop valve V8 and high pressure drain valve Vt1 successively on the high pressure drain pipe W1 of high pressure heat exchanger E1 outlet, during inserting, the outlet of high pressure drain valve Vt1 presses the condensing water inlet of flash tank D1, the middle top of flash tank D1 of pressing is provided with middle compression set pressurized overflow valve Vd1, press the entrance of heat exchanger E2 during the outlet of middle compression set pressurized overflow valve Vd1 inserts by middle pressure flash distillation steam pipe S5, middle pressure flash distillation steam pipe S5 is provided with the 6th stop valve V6.
Be in series with the tenth stop valve V10 and middle pressure drain valve Vt2 successively on the middle middle pressure drain pipe W2 that presses heat exchanger E2 to export, middle condensing water inlet of pressing the outlet access low pressure flash chamber D2 of 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 is by the entrance of low pressure flash steam pipe S6 access low pressure heat exchanger E3, and low pressure flash steam pipe S6 is provided with the 7th stop valve V7.
The low pressure drain pipe W3 of low pressure heat exchanger E3 outlet is provided with low pressure drain valve Vt3, and the outlet of low pressure drain valve Vt3 inserts the entrance of condensate pump P1.Cross-over connection has the 9th stop valve V9 between the entrance of the 8th stop valve V8 and the tenth stop valve V10, and cross-over connection has the 11 stop valve V11 between the entrance of the tenth stop valve V10 and low pressure drain valve Vt3.
The condensation-water drain of middle pressure flash tank D1 bottom is equipped with presses the pressure of flash tank D1 to regulate the preceding pressure automatic regulating valve Vq of aperture automatically in the basis, the outlet of preceding pressure automatic regulating valve Vq inserts the entrance of low pressure flash chamber D2.The preceding automatic aperture of regulating of the pressure height of pressing flash tank D1 in the automatic regulating valve Vq basis of pressing, flow between the middle flash tank D1 of pressure and the low pressure flash chamber D2 can be regulated by preceding pressure control valve, the middle pressure of flash tank D1 of pressing is higher than when setting value, the preceding control valve opening of pressing increases, and the flow between middle pressure flash tank D1 and the low pressure flash chamber D2 increases; The middle pressure of flash tank D1 of pressing is lower than when setting value, and preceding pressure control valve opening reduces, and the flow between middle pressure flash tank D1 and the low pressure flash chamber D2 reduces.The condensation-water drain of low pressure flash chamber D2 bottom inserts the entrance of condensate pump P1.
Stop valve and back stop valve before 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 respectively are parallel with the bypass stop valve between the outlet of the entrance of preceding stop valve and back stop valve.
When the product arts demand uses 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; What this moment, high pressure heat exchanger E1 used is the high steam of outer confession, the condensed water of high pressure heat exchanger E1 is pressed flash tank D1 in the 8th stop valve V8 and high pressure drain valve Vt1 enter, during entering, middle middle pressure flash steam of pressing flash tank D1 to produce presses heat exchanger E2, the middle condensed water of heat exchanger E2 of pressing 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 the product arts demand uses middle pressure steam, open the second stop valve V2, the 4th stop valve V4, the 7th stop valve V7, the 9th stop valve V9 and the tenth stop valve V10, close the first stop valve V1 simultaneously, the 3rd stop valve V3, the 5th stop valve V5, the 6th stop valve V6, the 8th stop valve V8 and the 11 stop valve V11, this moment, high pressure heat exchanger E1 and middle pressure heat exchanger E2 all used the middle pressure steam of outer confession, the condensed water that high pressure heat exchanger E1 produces is through the 9th stop valve V9, the tenth stop valve V10 and middle pressure drain valve Vt2 enter low pressure flash chamber D2, middle condensed water of pressing heat exchanger E2 to produce 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 the product arts demand uses low-pressure steam, open 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, close the first stop valve V1 simultaneously, the second stop valve V2, the 6th stop valve V6, the 7th stop valve V7, the 8th stop valve V8 and the tenth stop valve V10, this moment high pressure heat exchanger E1, middle low-pressure steam of pressing heat exchanger E2 and low pressure heat exchanger E3 all to use outer confession, the condensed water that high pressure heat exchanger E1 produces is through the 9th stop valve V9, the 11 stop valve V11 and low pressure drain valve Vt3 enter condensate pump P1, middle condensed water of pressing heat exchanger E2 to produce enters condensate pump P1 through the 11 stop valve V11 and low pressure drain valve Vt3, and the condensed water that low pressure heat exchanger E3 produces directly enters condensate pump P1 through low pressure drain valve Vt3.
The above only is the preferable possible embodiments of the utility model, and is non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model 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 the utility model requirement.
Claims (5)
1. the no return air relaxation heat setting machine of a condensed water flash and sensible heat and air draft waste heat recovery, the cabinets cavity of relaxation 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 the 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 the casing by exhaust duct, it is characterized in that: also comprise new wind preheater, the below of described new wind preheater is provided with new wind entrance, the top of new wind preheater is provided with pre-hot blast outlet, and the Lower Half that the exhaust duct of relaxation heat setting machine inserts new wind preheater makes air draft and new wind carry out indirect heat exchange; Described heat exchanger comprises from top to bottom stacked successively high pressure heat exchanger, middle heat exchanger and the low pressure heat exchanger of pressing, the entrance of described high pressure heat exchanger links to each other with main feed header, during inserting by the high pressure drain valve, the outlet of described high pressure heat exchanger presses the condensing water inlet of flash tank, the middle top of flash tank of pressing is provided with middle compression set pressurized overflow valve, the outlet of middle compression set pressurized overflow valve inserts described middle entrance of pressing heat exchanger by middle pressure flash distillation steam pipe, the outlet of middle pressure heat exchanger inserts 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 inserts the entrance of described low pressure heat exchanger by the low pressure flash steam pipe, the low pressure heat exchanger exit inserts the entrance of condensate pump by the low pressure drain valve, the first half that the condensed water delivery side of pump inserts described new wind preheater makes condensed water and new wind carry out indirect heat exchange, and the pre-hot blast outlet of described new wind preheater inserts the described wind-supplying mouth of relaxation heat setting machine.
2. the no return air relaxation heat setting machine of condensed water flash according to claim 1 and sensible heat and air draft waste heat recovery, it is characterized in that: high-pressure steam pipe, middle pressure steam pipe and low pressure steam pipe link to each other with main feed header by first stop valve, second stop valve and the 3rd stop valve respectively; Described main feed header directly links to each other with the entrance of described high pressure heat exchanger, links to each other, links to each other with the entrance of described low pressure heat exchanger by the 5th stop valve with the entrance of described middle pressure heat exchanger by the 4th stop valve; Press the flash distillation steam pipe to be provided with the 6th stop valve in described, the outlet of described the 6th stop valve also links to each other with the described middle entrance of heat exchanger of pressing; Described low pressure flash steam pipe is provided with the 7th stop valve, and the outlet of described the 7th stop valve also links to each other 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 the 8th stop valve is in series with described high pressure drain valve; Press the outlet of heat exchanger to be provided with the tenth stop valve in described, the rear of described the tenth stop valve is in series with the described middle drain valve of pressing; Cross-over connection has the 9th stop valve between the entrance of described the 8th stop valve and described the tenth stop valve, and cross-over connection has the 11 stop valve between the entrance of described the tenth stop valve and described low pressure drain valve.
3. the no return air relaxation heat setting machine of condensed water flash according to claim 1 and sensible heat and air draft waste heat recovery, it is characterized in that: the condensation-water drain of described middle pressure flash tank bottom is equipped with presses the pressure of flash tank to regulate the preceding pressure automatic regulating valve of aperture automatically in the basis, the outlet of described preceding pressure automatic regulating valve inserts the entrance of described low pressure flash chamber.
4. the no return air relaxation heat setting machine of condensed water flash according to claim 1 and sensible heat and air draft waste heat recovery, it is characterized in that: the condensation-water drain of described low pressure flash chamber bottom inserts the entrance of described condensate pump.
5. according to the no return air relaxation heat setting machine of each described condensed water flash and sensible heat and air draft waste heat recovery in the claim 1 to 4, it is characterized in that: stop valve and back stop valve before the front and back of described high pressure drain valve, middle pressure drain valve and low pressure drain valve are in series with respectively are parallel with the bypass stop valve between the outlet of the entrance of described preceding stop valve and back stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200369977U CN203174268U (en) | 2013-01-22 | 2013-01-22 | Return-air-free relaxation heat-setting machine for flash and sensible heat of condensate water and waste heat recovery of exhaust air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200369977U CN203174268U (en) | 2013-01-22 | 2013-01-22 | Return-air-free relaxation heat-setting machine for flash and sensible heat of condensate water and waste heat recovery of exhaust air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203174268U true CN203174268U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200369977U Withdrawn - After Issue CN203174268U (en) | 2013-01-22 | 2013-01-22 | Return-air-free relaxation heat-setting machine for flash and sensible heat of condensate water and waste heat recovery of exhaust air |
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| Country | Link |
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| CN (1) | CN203174268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088590A (en) * | 2013-01-22 | 2013-05-08 | 云南能投有能科技有限公司 | Non-air return, condensing water flash vaporization and sensitive heat and air exhaust waste heat recovery laxation thermoforming machine |
-
2013
- 2013-01-22 CN CN2013200369977U patent/CN203174268U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088590A (en) * | 2013-01-22 | 2013-05-08 | 云南能投有能科技有限公司 | Non-air return, condensing water flash vaporization and sensitive heat and air exhaust waste heat recovery laxation thermoforming machine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130904 Effective date of abandoning: 20140820 |
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| RGAV | Abandon patent right to avoid regrant |