CN107142773A - A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System and control method - Google Patents
A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System and control method Download PDFInfo
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- CN107142773A CN107142773A CN201710458993.0A CN201710458993A CN107142773A CN 107142773 A CN107142773 A CN 107142773A CN 201710458993 A CN201710458993 A CN 201710458993A CN 107142773 A CN107142773 A CN 107142773A
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- flash tank
- flash
- heater
- liquid level
- steam
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/18—Drying webs by hot air
- D21F5/181—Drying webs by hot air on Yankee cylinder
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
- D21G9/0036—Paper-making control systems controlling the press or drying section
Abstract
The present invention provides a kind of high speed toilet paper machine and exempts from Analysis of Heat Pump Drying System and its control method.The system includes：Gas hood, Flying Dutchman, the first flash tank, the second flash tank, the 3rd flash tank, waste-heat recovery device, condensation water heater, flash heater, heater exhaust gas and steam heater.The system and its control method improve efficiency of energy utilization by reclaiming the waste heat in indirect steam and condensed water, the characteristics of with energy-saving and environmental protection.
Description
Technical field
The present invention relates to toilet paper machine manufacturing technology field, specially a kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System
And control method.
Background technology
In the production process of toilet paper, it is a wherein important link that toilet paper, which is dried, is had in toilet paper machine specially
The drying device of door is used for dry toilet tissue, and in the drying process, drying device is larger for the demand of electric energy and steam, its
Power consumption accounts for more than the 80% of whole toilet paper production power consumption, therefore carries out energy recovery using to whole toilet paper to drying device
The energy-saving and emission-reduction of production process are significant.
At present, heat pump heat supply system is generally used in 600m/min~1200m/min high speed toilet paper machine for speed
Toilet paper is dried in system.When toilet paper is dried using heat pump heat distribution system, it usually needs ensure the vapour source of live steam
Pressure is in more than 0.9Mpa, and when the vapour source pressure of live steam is less than 0.9Mpa, heat pump heat distribution system can not generally be used.
The content of the invention
For problems of the prior art, the present invention provide a kind of high speed toilet paper machine exempt from Analysis of Heat Pump Drying System and
Control method, by reclaiming the waste heat in indirect steam and condensed water, improves efficiency of energy utilization, with energy-saving and environmental protection
Feature.
The present invention is to be achieved through the following technical solutions：
A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System, including：Gas hood, Flying Dutchman, the first flash tank, second dodge
Steaming pot, the 3rd flash tank, waste-heat recovery device, condensation water heater, flash heater, heater exhaust gas and steam heater；
The gas hood is arranged at the top of Flying Dutchman, and Flying Dutchman is used to carry out toilet paper contact drying, and gas hood leads to
Cross high-temperature steam and impingement drying is carried out to toilet paper；
The condensation produced in the condensation water output of the Flying Dutchman and the connection of the first flash tank input port, Flying Dutchman
Water can enter the first flash tank；
The steam outlet of first flash tank connects with steam heater, heater exhaust gas and flash heater respectively
It is logical, the input port connection of the condensation water output and the 3rd flash tank of the first flash tank；
The input port of second flash tank is connected with the condensation water output of steam heater, the steam of the second flash tank
Delivery outlet is connected with heater exhaust gas, the input port connection of the condensation water output and the 3rd flash tank of the second flash tank；
The steam outlet of 3rd flash tank is connected with flash heater, the condensation water output of the 3rd flash tank and
Condense water heater connection；
The waste-heat recovery device, condensation water heater, flash heater, heater exhaust gas and steam heater connect successively
It is logical；
The waste gas delivery outlet of the gas hood is connected with waste-heat recovery device, the return air delivery outlet and condensation water heater of gas hood
Delivery outlet connection；
The steam outlet of the steam heater is connected with gas hood.
It is preferred that, in addition to：First pressure sensor, second pressure sensor, pressure difference transmitter, the first flash valve and
Two flash valves；
The first pressure sensor is located at the input port of Flying Dutchman, and second pressure sensor is located at going out for Flying Dutchman
Between mouth and the first flash tank；
First flash valve is located between the first flash tank and heater exhaust gas, and the second flash valve is located at the first flash tank
Between flash heater；
The pressure difference transmitter is connected with first pressure sensor and second pressure sensor respectively, for according to the first pressure
Detected by force snesor and second pressure sensor Flying Dutchman input and delivery outlet pressure difference control the first flash valve and
The aperture of second flash valve.
It is preferred that, in addition to：First level sensing control unit, the second level sensing control unit, the 3rd level sensing
Control unit, the first liquid level valve, the second liquid level valve and condensate pump；
The test side of the first level sensing control unit is located in the first flash tank, for detecting in the first flash tank
Liquid level；The test side of second level sensing control unit is located in the second flash tank, for detecting the liquid in the second flash tank
Position；The test side of 3rd level sensing control unit is located in the 3rd flash tank, for detecting the liquid level in the 3rd flash tank；
First liquid level valve is located between the first flash tank and the 3rd flash tank, and the first level sensing control unit passes through
The first liquid level valve is controlled to control the liquid level of the first flash tank；
Second liquid level valve is located between the second flash tank and the 3rd flash tank, and the second level sensing control unit passes through
The second liquid level valve is controlled to control the liquid level of the second flash tank；
The condensate pump is located between the 3rd flash tank and condensation water heater, for by the condensation in the 3rd flash tank
Water is extracted into condensation water heater, and the 3rd level sensing control unit is by controlling condensate pump to control the liquid level of the 3rd flash tank
Highly.
It is preferred that, in addition to water tank, the input port of water tank is connected with flash heater and condensation water heater, for receiving
Collect condensed water.
Further, between the steam heater and the second flash tank, between heater exhaust gas and the 3rd flash tank with
And drain valve is equipped between flash heater and water tank.
It is preferred that, live steam input port is additionally provided with steam heater.
A kind of high speed toilet paper machine exempts from the control method of Analysis of Heat Pump Drying System, based on any one described high speed health
Paper machine exempts from Analysis of Heat Pump Drying System, including：
Waste gas in gas hood enters waste-heat recovery device, by the heat entrained by waste gas to inhaling in waste-heat recovery device
The fresh air entered carries out one-level heating；
Condensed water in 3rd flash tank enters two grades of the fresh air progress that condensation water heater condenses water heater to entering
Heating, return air of the fresh air in the equipped at outlet port and gas hood of condensation water heater by two grades of heating is mixed to form mixing wind；
The flash-off steam that condensed water in Flying Dutchman enters produced by after the first flash tank, and the first flash tank, the
The flash-off steam that condensed water in two flash tanks and heater exhaust gas enters produced by after the 3rd flash tank together enters flash distillation and added
Hot device carries out three-level heating to mixing wind；
Condensed water in Flying Dutchman enters cold in flash-off steam and steam heater produced by after the first flash tank
The flash-off steam that solidifying water enters produced by after the second flash tank enters heater exhaust gas and carries out level Four heating to mixing wind；
The flash-off steam that condensed water in Flying Dutchman enters produced by after the first flash tank enters steam heater to mixed
Close wind and carry out Pyatyi heating, the mixing wind after being heated through Pyatyi enters gas inlet cover.
It is preferred that, it is less than pressure when first pressure sensor and second pressure sensor detect Flying Dutchman inlet outlet pressure differential
During poor lower limit, the aperture of the first flash valve of regulation and the second flash valve increases Flying Dutchman inlet outlet pressure differential；
When first pressure sensor and second pressure sensor detect Flying Dutchman inlet outlet pressure differential more than the pressure difference upper limit
During value, the aperture of the first flash valve of regulation and the second flash valve reduces Flying Dutchman inlet outlet pressure differential.
Further, the steam produced in the first flash tank preferentially inputs steam heater；
It is defeated by the live steam on steam heater when the temperature that wind is mixed in steam heater is less than work requirements
Entrance inputs live steam, to heat mixing wind.
It is preferred that, when the liquid level that the first level sensing control unit is detected in the first flash tank is higher than the liquid level upper limit,
First level sensing control unit controls the first liquid level valve to open greatly, and the condensed water in the first flash tank flows into the 3rd flash tank；When
When the liquid level that first level sensing control unit detects in the first flash tank is less than liquid level lower limit, the control of the first level sensing is single
Member the first liquid level valve of control is turned down；
When the liquid level that the second level sensing control unit is detected in the second flash tank is higher than the liquid level upper limit, the second liquid level
Detection control unit controls the second liquid level valve to open greatly, and the condensed water in the second flash tank flows into the 3rd flash tank；When the second liquid level
When detection control unit detects liquid level in the second flash tank and is less than liquid level lower limit, the second level sensing control unit control the
Two liquid level valves are turned down；
When the liquid level that the 3rd level sensing control unit is detected in the 3rd flash tank is higher than the liquid level upper limit, the 3rd liquid level
Condensed water in detection control unit control condensate pump work, the 3rd flash tank is extracted；When the 3rd level sensing controls list
When the liquid level that member detects in the 3rd flash tank is less than liquid level lower limit, the 3rd level sensing control unit control condensate pump stops
Work.
Compared with prior art, the present invention has following beneficial technique effect：
In system of the present invention by the first flash tank, the second flash tank, the 3rd flash tank, waste-heat recovery device,
Condensation water heater, flash heater, heater exhaust gas and steam heater are realized to the heat in waste gas and condensed water
Recycle；Fresh air is inhaled into waste-heat recovery device in described method, and the waste gas in gas hood carries out first order heating,
Enter condensation water heater afterwards and carry out second level heating, then be mixed to form with the return air produced in gas hood mix wind and enter and flash
Heater, the indirect steam flashed off by the 3rd flash tank carries out third level heating, and heater exhaust gas is entered afterwards and carries out the 4th
Level heating, the flash-off steam produced afterwards by the first flash tank carries out level V heating.Now, if required for wind pushing temperature reaches
Operating temperature, then enter in gas inlet cover and wet web heated, if not carried out up to the requirement of operating temperature with live steam
Gas hood is sent into after filling.The present invention need not use heat pump, and at utmost utilize indirect steam and steam condensate (SC), effectively
Steam consumption has been saved, toilet paper machine efficiency of energy utilization is improved, while avoiding heat pump heat distribution system needs live steam
Vapour source pressure the problem of more than 0.9Mpa, improve adaptability of the toilet paper drying system to working environment；
Further, the pressure difference that Flying Dutchman is imported and exported is detected by first pressure sensor, second pressure sensor, led to
Overpressure difference transmitter controls the first flash valve and the second flash valve, to ensure that the pressure difference that Flying Dutchman is imported and exported is in pressure difference lower limit
Between the pressure difference upper limit, it is to avoid ponding is produced in Flying Dutchman；
Further, the first level sensing control unit, the second level sensing control unit, the control of the 3rd level sensing are single
Member, the first liquid level valve, the second liquid level valve and condensate pump realize flash tank liquid level chain control, with ensure the first flash tank,
Liquid level is in normal condition in second flash tank and the 3rd flash tank, and reduces and caused due to frequent starting condensate pump
The risk that condensate pump is damaged.
Further, live steam is inputted by the live steam input port on steam heater, to ensure to mix wind energy
Reach job requirement temperature.
Further, the condensed water that indirect steam and condensed water are produced after being recycled enters flash distillation by drain valve
Condensed water in tank or water tank, the automatic purging line of drain valve energy, and can prevent steam from leaking.
Brief description of the drawings
Fig. 1 is that high speed toilet paper machine exempts from Analysis of Heat Pump Drying System schematic diagram described in present example；
Fig. 2 is valve opening-Flying Dutchman inlet outlet pressure differential graph of a relation described in present example；
Fig. 3 is flash tank liquid level chain control flow chart described in present example.
In figure：1. gas hood, 2. Flying Dutchmans, 3. first flash tanks, 4. second flash tanks, 5. the 3rd flash tanks, 6. water tanks,
7. waste-heat recovery device, 8. condensation water heaters, 9. flash heaters, 10. heater exhaust gas, 11. steam heaters, 12. pressures
Poor transmitter, 13. first pressure sensors, 14. second pressure sensors, 15. first flash valves, 16. second flash valves, 17.
First level sensing control unit, 18. first liquid level valves, 19. second level sensing control units, 20. second liquid level valves, 21.
3rd level sensing control unit, 22. condensate pumps.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
As shown in figure 1, a kind of high speed toilet paper machine provided in an embodiment of the present invention exempts from Analysis of Heat Pump Drying System, including：Gas
Cover 1, Flying Dutchman 2, the first flash tank 3, the second flash tank 4, the 3rd flash tank 5, waste-heat recovery device 7, condensation water heater
8th, flash heater 9, heater exhaust gas 10 and steam heater 11；
Gas hood 1 is arranged at the top of Flying Dutchman 2, and Flying Dutchman 2 is used to carry out toilet paper contact drying, and gas hood 1 leads to
Cross high-temperature steam and impingement drying is carried out to toilet paper；
The condensation produced in the condensation water output of Flying Dutchman 2 and the connection of the input port of the first flash tank 3, Flying Dutchman 2
Water can enter the first flash tank 3；
The steam outlet of first flash tank 3 connects with steam heater 11, heater exhaust gas 10, flash heater 9 respectively
Logical, the condensation water output and the 3rd flash tank 5 of the first flash tank 3 are connected；
The input port of second flash tank 4 is connected with the condensation water output of steam heater 11, the steam of the second flash tank 4
Delivery outlet is connected with heater exhaust gas 10, the input port connection of the condensation water output and the 3rd flash tank 5 of the second flash tank 4；
The steam outlet of 3rd flash tank 5 is connected with flash heater 9, and the condensation water output and condensed water of the 3rd flash tank 5 add
Hot device 8 is connected；
Waste-heat recovery device 7, condensation water heater 8, flash heater 9, heater exhaust gas 10, steam heater 11 are successively
Connection；The waste gas delivery outlet of gas hood 1 is connected with waste-heat recovery device 7, return air delivery outlet and the condensation water heater 8 of gas hood 1
Delivery outlet is connected；The steam outlet of steam heater 11 is connected with gas hood 1.
Wherein, live steam enters Flying Dutchman 2 by inlet valve, Flying Dutchman 2 is heated, in live steam source
Pressure sensor is installed between Flying Dutchman 2, the input pressure for detecting live steam.
A kind of high speed toilet paper machine provided in an embodiment of the present invention, which exempts from Analysis of Heat Pump Drying System, also to be included：First pressure is sensed
Device 13, second pressure sensor 14, pressure difference transmitter 12, the first flash valve 15 and the second flash valve 16；
First pressure sensor 13 is located at the input port of Flying Dutchman 2, and second pressure sensor 14 is located at Flying Dutchman 2
Between outlet and the first flash tank 3；First flash valve 15 is located between the first flash tank 3 and heater exhaust gas 10, the second flash distillation
Valve 16 is located between the first flash tank 3 and flash heater 9；Pressure difference transmitter 12 respectively with first pressure sensor 13 and second
Pressure sensor 14 is connected, for the Flying Dutchman according to detected by first pressure sensor 13 and second pressure sensor 14
The pressure difference of 2 inputs and delivery outlet controls the aperture of the first flash valve 15 and the second flash valve 16.
Wherein, the pressure difference of the import and export of the valve opening and Flying Dutchman 2 of the first flash valve 15 and the second flash valve 16
Relation is as shown in Fig. 2 when the pressure difference that Flying Dutchman 2 is imported and exported is less than pressure difference lower limit, tuning up the first flash valve 15 and second and dodging
The aperture of valve 16 is steamed, when the pressure difference that Flying Dutchman 2 is imported and exported is more than the pressure difference upper limit, the first flash valve 15 and the second flash distillation is turned down
The aperture of valve 16.Ensure that the pressure difference that Flying Dutchman 2 is imported and exported can avoid the ponding of Flying Dutchman 2 in normal condition.Example,
Pressure difference transmitter can be DPIC101 and DPT as shown in Figure 1.
A kind of high speed toilet paper machine provided in an embodiment of the present invention, which exempts from Analysis of Heat Pump Drying System, also to be included：First level sensing
Control unit 17, the second level sensing control unit 19, the 3rd level sensing control unit 21, the first liquid level valve 18, the second liquid
Position valve 20 and condensate pump 22；
The test side of first level sensing control unit 17 is located in the first flash tank 3, for detecting in the first flash tank 3
Liquid level；The test side that second level sensing surveys control unit 19 is located in the second flash tank 5, for detecting the second flash tank 4
In liquid level；The test side of 3rd level sensing control unit 21 is located in the 3rd flash tank 5, for detecting the 3rd flash tank 5
In liquid level；
First liquid level valve 18 is located between the first flash tank 3 and the 3rd flash tank 5, and the first level sensing control unit 17 is led to
Cross the liquid level that the first liquid level valve 18 of control controls the first flash tank 3；
Second liquid level valve 20 is located between the second flash tank 4 and the 3rd flash tank 5, and the second level sensing control unit 19 is led to
Cross the liquid level that the second liquid level valve 20 of control controls the second flash tank 4；
Condensate pump 22 is located between the 3rd flash tank 5 and condensation water heater 8, for will be cold in the 3rd flash tank 5
Solidifying water is extracted into condensation water heater 8, and the 3rd level sensing control unit 21 is by controlling condensate pump 22 to control the 3rd flash distillation
The liquid level of tank 5.
Wherein, level sensing control unit can be made up of liquid level sensor and fluid level transmitter (LIC), liquid level sensor
For detecting the liquid level in flash tank, fluid level transmitter controls the liquid in flash tank by the testing result of liquid level sensor
Position height.
Optionally, a kind of high speed toilet paper machine provided in an embodiment of the present invention, which exempts from Analysis of Heat Pump Drying System, also includes water tank 6,
The input port of water tank 6 is connected with flash heater 9 and condensation water heater 8, for collecting condensed water.Collected in water tank 6
Condensed water is admitted to boiler room by water pump, turns into live steam after being heated through boiler and recycles.
Optionally, between the flash tank 4 of steam heater 11 and second, between the flash tank 5 of heater exhaust gas 10 and the 3rd, dodge
Steam and be equipped with drain valve between heater 9 and water tank 6.Drain valve can be automatically drained out the condensed water in pipeline, and can prevent
Steam leakage.
Optionally, live steam input port is additionally provided with steam heater 11, when the mixing wind heated by Pyatyi
When temperature is also less than use requirement, live steam is inputted by the live steam input port mixing wind is continued to heat, Zhi Daoqi
Temperature reaches use requirement.
A kind of high speed toilet paper machine exempts from the control method of Analysis of Heat Pump Drying System, in being provided based on the embodiment of the present invention
High-speed toilet paper making machine exempts from Analysis of Heat Pump Drying System, including：
Waste gas in gas hood 1 enters waste-heat recovery device 7, passes through the heat entrained by waste gas in waste-heat recovery device 7
One-level heating is carried out to the fresh air in air；
Condensed water in 3rd flash tank 5 enters the fresh air progress two that 8 pairs of condensation water heater enters condensation water heater 8
Level heating, return air of the fresh air in the equipped at outlet port and gas hood 1 of condensation water heater 8 by two grades of heating is mixed to form mixing
Wind；
Flash-off steam and the first flash tank 3 that condensed water in Flying Dutchman 2 enters produced by after the first flash tank 3, the
The flash-off steam that condensed water in two flash tanks 4, heater exhaust gas 10 enters produced by after the 3rd flash tank 5 enters flash distillation and heated
9 pairs of mixing wind of device carry out three-level heating；
Condensed water in Flying Dutchman 2 enters in flash-off steam and steam heater 11 produced by after the first flash tank 3
The flash-off steam that enters produced by after the second flash tank of condensed water enter 10 pairs of heater exhaust gas mixing wind and carry out level Four heating；
The flash-off steam that condensed water in Flying Dutchman 2 enters produced by after the first flash tank 3 enters steam heater 11
Pyatyi heating is carried out to mixing wind, the mixing wind after being heated through Pyatyi enters gas inlet cover 1.
Optionally, when first pressure sensor 13 and second pressure sensor 14 detect the inlet outlet pressure differential of Flying Dutchman 2
During less than pressure difference lower limit, the aperture of the first flash valve 15 of regulation and the second flash valve 16, increase Flying Dutchman 2 imports and exports pressure
Difference；
When first pressure sensor 13 and second pressure sensor 14 detect Flying Dutchman inlet outlet pressure differential more than pressure difference
During higher limit, the aperture of the first flash valve 15 of regulation and the second flash valve 16 reduces the inlet outlet pressure differential of Flying Dutchman 2.
Optionally, the steam produced in the first flash tank 3 preferentially inputs steam heater 11；
When the temperature that wind is mixed in steam heater 11 is less than work requirements, pass through the fresh steaming on steam heater 11
Vapour input port inputs live steam, to heat mixing wind.
Optionally, it is achieved by the steps of flash tank liquid level chain control：
When the liquid level that the first level sensing control unit 17 is detected in the first flash tank 3 is higher than the liquid level upper limit, first
Level sensing control unit 17 controls the first liquid level valve 18 to open greatly, and the condensed water in the first flash tank 3 flows into the 3rd flash tank 5；
When the liquid level that the first level sensing control unit 17 is detected in the first flash tank 3 is less than liquid level lower limit, the first level sensing
Control unit 17 controls the first liquid level valve 18 to turn down；
When the liquid level that the second level sensing control unit 19 is detected in the second flash tank 4 is higher than the liquid level upper limit, second
Level sensing control unit 19 controls the second liquid level valve 20 to open greatly, and the condensed water in the second flash tank 4 flows into the 3rd flash tank 5；
When the liquid level that the second level sensing control unit 19 is detected in the second flash tank 4 is less than liquid level lower limit, the second level sensing
Control unit 19 controls the second liquid level valve 20 to turn down；
When the liquid level that the 3rd level sensing control unit 21 is detected in the 3rd flash tank 5 is higher than the liquid level upper limit, the 3rd
The control condensate pump 22 of level sensing control unit 21 is worked, and the condensed water in the 3rd flash tank 5 is extracted；When the inspection of the 3rd liquid level
When the liquid level that survey control unit 21 detects in the 3rd flash tank 5 is less than liquid level lower limit, the 3rd level sensing control unit 21 is controlled
Refrigeration condensate pump 22 is stopped.
Example, as shown in figure 3, for the 3rd flash tank 5, if using VFC condensate pump 22, can cause cold
Condensate pump 22 is excessively frequently damaged due to start and stop, by flash tank liquid level chain control, it is possible to decrease the startup of condensate pump 22
Frequency, protects condensate pump 22.After liquid level rise reaches the liquid level upper limit of the 3rd flash tank 5, condensate pump 22 is opened, makes the
The liquid level reduction of three flash tanks 5；When liquid level is reduced to the liquid level lower limit of the 3rd flash tank 5, stop condensate pump 22, it is ensured that the
The level stability of three flash tank 5.When reaching the upper limit similarly, for the first flash tank 3 and the liquid level of the second flash tank 4, first is opened
Liquid level valve 18 makes the liquid level of the first flash tank 3 drop to bottom level limit, and opening the second liquid level valve 19 makes under the liquid level of the second flash tank 4
Lower limit is down to, so as to increase the pressure difference between the first flash tank 3, the second flash tank 4 and the 3rd flash tank 5, promotes first to dodge
Condensed water in the flash tank 4 of steaming pot 3 and second enters the 3rd flash tank 5.
It should be noted that the waste gas being previously mentioned in the embodiment of the present invention refer to it is wet after dry toilet tissue in gas hood 1
Vapours, return air refers to the circulated air produced in gas hood 1.
Specifically, when a kind of high speed toilet paper machine of the invention exempts from Analysis of Heat Pump Drying System work, live steam passes through regulation
Control valve on live steam pipeline controls the quantity of steam into Yankee drying cylinder 2, and the condensed water that Yankee drying cylinder 2 is produced enters the
One flash tank 3.The indirect steam that first flash tank 3 is flashed off is controlled by adjusting two control valves on indirect steam pipeline
Into the throttle flow of steam heater 11；The throttle flow into heater exhaust gas 10 is controlled by adjusting the first flash valve 15,
The second flash valve 16 is adjusted to control the throttle flow into flash heater 9.When the pressure at inlet of steam heater 11 is not enough,
By adjusting the control valve of its correspondence live steam entrance to control live steam throttle flow to ensure entering for steam heater 11
Atmospheric pressure, the condensed water that steam heater 11 is produced enters the second flash tank 4 through drain valve；Second flash tank 4 flash off two
Secondary steam enters heater exhaust gas 10；The condensed water that first flash tank 3 and the second flash tank 4 are produced is by adjusting the first liquid level valve
18 and second liquid level valve 20 control into the 3rd flash tank 5 condensation water quantity, heater exhaust gas 10 produce condensed water pass through it is right
Two drain valves answered enter the 3rd flash tank 5, and the indirect steam that the 3rd flash tank 5 is flashed off is through on correspondence indirect steam pipeline
Check-valves enter flash heater 9, the 3rd flash tank 5 produce condensed water controlled by adjusting condensate pump 22 enter it is cold
The solidifying inflow of water heater 8, recycled and control valve that finally regulation is condensed on the export pipeline of water heater 8 control into
Enter the inflow of water tank, the condensed water that flash heater 9 is produced is discharged into water tank 6 through corresponding drain valve.
As shown in figure 1, then the indirect steam that the first flash tank 3 is flashed off must ensure on the premise of steam heater 11
Adjust the first flash valve 15 and the control of the second flash valve 16 enters the throttle flow of heater exhaust gas 10 and flash heater 9, work as steaming
When the detection of the inlet pressure of vapour heater 11 is not enough, the control valve opening adjusted on its corresponding fresh air inlet is steamed fresh
Vapour is passed through steam heater 11, to ensure the admission pressure of steam heater 11.As shown in Fig. 2 corresponding to each flash tank secondary
Steam carries out Staged cotrol；The condensed water produced in Flying Dutchman 2 enters the first flash tank 3, and the indirect steam flashed off leads to
Enter steam heater 11, heater exhaust gas 10 and flash heater 9 in the case of often and carry out waste heat recovery；When Flying Dutchman 2 enters
When exporting differential pressure less than lower limit, the indirect steam of the first flash tank 3 of regulation exports the first flash valve 15 and the second flash valve 16
Control enters the throttle flow of heater exhaust gas 10 and flash heater 9, so that indirect steam pressure in the first flash tank 3 is reduced,
Increase Flying Dutchman 2 and import and export differential pressure, it is ensured that it is stable that Flying Dutchman 2 imports and exports differential pressure.As shown in figure 3, to the liquid level of flash tank
Carry out chain control；When operating mode changes in paper machine operation state, it is possible to create a large amount of condensed waters enter flash tank, for
The characteristics of condensed water is difficult discharge in flash tank, exclusive use condensation water valve mass rate of emission is slower, easily causes flash tank canful,
And can then cause condensate pump start and stop more frequent using condensate pump VFC, it is easily caused damage.Therefore, there is provided liquid level
Regulating valve and condensate pump VFC chain control loop.For the 3rd flash tank 5, when liquid level rise reaches the 3rd flash tank
After 5 deadband upper limit, the aperture control condensed water of regulation condensate pump 22 enters the inflow of condensation heater 8, makes the 3rd sudden strain of a muscle
The liquid level of steaming pot 5 is reduced；When liquid level is reduced to the liquid level deadband lower limit of the 3rd flash tank 5, stop condensate pump 22, it is ensured that the 3rd
Level stability in flash tank 5.Similarly, when the first flash tank 3 and the liquid level of the second flash tank 4 reach deadband upper limit, big condensation is opened
The first liquid level valve 18 and the second liquid level valve 20 of water make the first flash tank 3 and the liquid level of the second flash tank 4 reach lower limit, so as to increase
Pressure difference between big flash tank, promotes the condensed water in the first flash tank 3 and the second flash tank 4 to enter the 3rd flash tank 5.
By the way that the fresh air from air is drawn into waste-heat recovery device 7 by exhaust blower, discharge is damp and hot in gas hood 1
Steam exhaust carry out first order heating, subsequently enter condensation water heater 8 carry out second level heating, then with gas hood 1 in produce
Circulated air is mixed to form mixing wind and enters flash heater 9, and the indirect steam flashed off by the 3rd flash tank 5 is carried out to mixing wind
The third level is heated, and heater exhaust gas 10 is entered afterwards and carries out fourth stage heating.Condensed water in Flying Dutchman 2 enters the first flash distillation
Flash-off steam produced by after tank 3 enters 11 pairs of mixing wind of steam heater and carries out Pyatyi heating, now, if wind pushing temperature reaches
Required operating temperature, then enter and wet web heated in gas inlet cover 1；If the not up to requirement of operating temperature, by new
Fresh steam carries out the laggard gas inlet cover 1 of filling.The condensed water that indirect steam and condensed water are produced after being recycled is by hydrophobic
The condensed water that valve enters in corresponding flash tank or water tank 6, the automatic purging line of drain valve energy, and can prevent steam from leaking.Should
Method need not use heat pump, and at utmost utilize indirect steam and steam condensate (SC), be effectively saved steam consumption, carry
High toilet paper machine efficiency of energy utilization.
Claims (10)
1. a kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System, it is characterised in that including：Gas hood (1), Flying Dutchman (2),
One flash tank (3), the second flash tank (4), the 3rd flash tank (5), waste-heat recovery device (7), condensation water heater (8), flash distillation
Heater (9), heater exhaust gas (10) and steam heater (11)；
The gas hood (1) is arranged at the top of Flying Dutchman (2), and Flying Dutchman (2) is used to carry out contact drying, gas to toilet paper
Cover (1) and impingement drying is carried out to toilet paper by high-temperature steam；
Produced in the condensation water output of the Flying Dutchman (2) and the connection of the first flash tank (3) input port, Flying Dutchman (2)
Condensed water can enter the first flash tank (3)；
The steam outlet of first flash tank (3) adds with steam heater (11), heater exhaust gas (10) and flash distillation respectively
The input port connection of hot device (9) connection, the condensation water output of the first flash tank (3) and the 3rd flash tank (5)；
The input port of second flash tank (4) is connected with the condensation water output of steam heater (11), the second flash tank (4)
Steam outlet connected with heater exhaust gas (10), the condensation water output of the second flash tank (4) and the 3rd flash tank (5)
Input port is connected；
The steam outlet of 3rd flash tank (5) is connected with flash heater (9), and the condensed water of the 3rd flash tank (5) is defeated
Outlet is connected with condensation water heater (8)；
The waste-heat recovery device (7), condensation water heater (8), flash heater (9), heater exhaust gas (10) and steam add
Hot device (11) is sequentially communicated；
The waste gas delivery outlet of the gas hood (1) is connected with waste-heat recovery device (7), the return air delivery outlet and condensed water of gas hood (1)
The delivery outlet connection of heater (8)；
The steam outlet of the steam heater (11) is connected with gas hood (1).
2. a kind of high speed toilet paper machine as claimed in claim 1 exempts from Analysis of Heat Pump Drying System, it is characterised in that also include：The
One pressure sensor (13), second pressure sensor (14), pressure difference transmitter (12), the first flash valve (15) and the second flash valve
(16)；
The first pressure sensor (13) is located at the input port of Flying Dutchman (2), and second pressure sensor (14) is located at Yankee
Between the outlet of drying cylinder (2) and the first flash tank (3)；
First flash valve (15) is located between the first flash tank (3) and heater exhaust gas (10), the second flash valve (16) position
Between the first flash tank (3) and flash heater (9)；
The pressure difference transmitter (12) connects with first pressure sensor (13) and second pressure sensor (14) respectively, for root
According to Flying Dutchman (2) input detected by first pressure sensor (13) and second pressure sensor (14) and the pressure of delivery outlet
The aperture of difference the first flash valve of control (15) and the second flash valve (16).
3. a kind of high speed toilet paper machine as claimed in claim 1 exempts from Analysis of Heat Pump Drying System, it is characterised in that also include：The
One level sensing control unit (17), the second level sensing control unit (19), the 3rd level sensing control unit (21), first
Liquid level valve (18), the second liquid level valve (20) and condensate pump (22)；
The test side of the first level sensing control unit (17) is located in the first flash tank (3), for detecting that first flashes
Liquid level in tank (3)；The test side of second level sensing control unit (19) is located in the second flash tank (5), for detecting the
Liquid level in two flash tanks (4)；The test side of 3rd level sensing control unit (21) is located in the 3rd flash tank (5), is used for
Detect the liquid level in the 3rd flash tank (5)；
First liquid level valve (18) is located between the first flash tank (3) and the 3rd flash tank (5), and the control of the first level sensing is single
First (17) are by controlling the first liquid level valve (18) to control the liquid level of the first flash tank (3)；
Second liquid level valve (20) is located between the second flash tank (4) and the 3rd flash tank (5), and the control of the second level sensing is single
First (19) are by controlling the second liquid level valve (20) to control the liquid level of the second flash tank (4)；
The condensate pump (22) is located at the 3rd flash tank (5) and condensed between water heater (8), for by the 3rd flash tank
(5) condensed water in is extracted into condensation water heater (8), and the 3rd level sensing control unit (21) is by controlling condensate pump
(22) liquid level of the 3rd flash tank (5) is controlled.
4. a kind of high speed toilet paper machine as claimed in claim 1 exempts from Analysis of Heat Pump Drying System, it is characterised in that also including water tank
(6), the input port of water tank (6) is connected with flash heater (9) and condensation water heater (8), for collecting condensed water.
5. a kind of high speed toilet paper machine as claimed in claim 4 exempts from Analysis of Heat Pump Drying System, it is characterised in that the steam adds
Between hot device (11) and the second flash tank (4), between heater exhaust gas (10) and the 3rd flash tank (5) and flash heater
(9) it is equipped with drain valve between water tank (6).
6. a kind of high speed toilet paper machine as claimed in claim 1 exempts from Analysis of Heat Pump Drying System, it is characterised in that steam heater
(11) live steam input port is additionally provided with.
7. a kind of high speed toilet paper machine exempts from the control method of Analysis of Heat Pump Drying System, it is characterised in that based on claim 1 to 6
Any one described high speed toilet paper machine exempts from Analysis of Heat Pump Drying System, including：
Waste gas in gas hood (1) enters waste-heat recovery device (7), and the heat entrained by waste gas is passed through in waste-heat recovery device (7)
Measure and one-level heating is carried out to the fresh air of suction；
Condensed water in 3rd flash tank (5) enters condensation water heater (8) to be carried out to the fresh air for entering condensation water heater (8)
Two grades of heating, return air of the fresh air in the equipped at outlet port and gas hood (1) of condensation water heater (8) by two grades of heating mixes shape
Into mixing wind；
Condensed water in Flying Dutchman (2) enters the first flash tank (3) produced flash-off steam afterwards, and the first flash tank
(3), the condensed water in the second flash tank (4) and heater exhaust gas (10) enters the 3rd flash tank (5) produced flash distillation is steamed afterwards
Vapour together enters flash heater (9) and carries out three-level heating to mixing wind；
Condensed water in Flying Dutchman (2) enters the first flash tank (3) produced flash-off steam and steam heater (11) afterwards
In condensed water enter the second flash tank after produced by flash-off steam enter heater exhaust gas (10) to mixing wind carry out level Four
Heating；
Condensed water in Flying Dutchman (2) enters the first flash tank (3), and produced flash-off steam enters steam heater afterwards
(11) Pyatyi heating is carried out to mixing wind, the mixing wind after being heated through Pyatyi enters gas inlet cover (1).
8. method as claimed in claim 7, it is characterised in that when first pressure sensor (13) and second pressure sensor
(14) when detecting Flying Dutchman (2) inlet outlet pressure differential less than pressure difference lower limit, the first flash valve of regulation (15) and the second flash distillation
The aperture of valve (16), increases Flying Dutchman (2) inlet outlet pressure differential；
When first pressure sensor (13) and second pressure sensor (14) detect Flying Dutchman inlet outlet pressure differential more than pressure difference
During higher limit, the aperture of the first flash valve of regulation (15) and the second flash valve (16) reduces Flying Dutchman (2) inlet outlet pressure differential.
9. method as claimed in claim 8, it is characterised in that the steam produced in the first flash tank (3) preferentially inputs steam
Heater (11)；
When the temperature of mixing wind in steam heater (11) is less than work requirements, pass through the fresh steaming on steam heater (11)
Vapour input port inputs live steam, to heat mixing wind.
10. method as claimed in claim 7, it is characterised in that when the first level sensing control unit (17) detects first
When liquid level in flash tank (3) is higher than the liquid level upper limit, the first level sensing control unit (17) controls the first liquid level valve (18) to open
Greatly, the condensed water in the first flash tank (3) flows into the 3rd flash tank (5)；When the first level sensing control unit (17) is detected
When liquid level in first flash tank (3) is less than liquid level lower limit, the first level sensing control unit (17) controls the first liquid level valve
(18) turn down；
When the liquid level that the second level sensing control unit (19) is detected in the second flash tank (4) is higher than the liquid level upper limit, second
Level sensing control unit (19) controls the second liquid level valve (20) to open greatly, and the condensed water in the second flash tank (4) flows into the 3rd and dodged
Steaming pot (5)；When the liquid level that the second level sensing control unit (19) is detected in the second flash tank (4) is less than liquid level lower limit,
Second level sensing control unit (19) controls the second liquid level valve (20) to turn down；
When the liquid level that the 3rd level sensing control unit (21) is detected in the 3rd flash tank (5) is higher than the liquid level upper limit, the 3rd
Condensed water in level sensing control unit (21) control condensate pump (22) work, the 3rd flash tank (5) is extracted；When the 3rd
When the liquid level that level sensing control unit (21) detects in the 3rd flash tank (5) is less than liquid level lower limit, the 3rd level sensing control
Unit (21) control condensate pump (22) processed is stopped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710458993.0A CN107142773B (en) | 2017-06-16 | 2017-06-16 | A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System and control method |
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|---|---|---|---|
| CN201710458993.0A CN107142773B (en) | 2017-06-16 | 2017-06-16 | A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System and control method |
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| CN107142773B CN107142773B (en) | 2018-12-14 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661535A (en) * | 1968-09-13 | 1972-05-09 | Singmaster & Breyer | Process for drying hydrophilic ores and recovering sulfur therefrom |
| JPS5959993A (en) * | 1982-09-22 | 1984-04-05 | 株式会社加藤電気商会 | Steam utilizing system of dryer |
| CN102410755A (en) * | 2011-12-16 | 2012-04-11 | 亿恒节能科技江苏有限公司 | Multi-effect flash evaporation system for utilizing condensed water waste heat in air-heating coil group |
| CN202869180U (en) * | 2012-10-09 | 2013-04-10 | 陕西科技大学 | Comprehensive utilization and switch device of different quality steam |
| CN203247454U (en) * | 2013-05-09 | 2013-10-23 | 陕西科技大学 | Hot air temperature control device of sealed air hood |
| CN104264525A (en) * | 2014-09-24 | 2015-01-07 | 陕西科技大学 | Automatic early-warning and elimination system for water accumulation in drying cylinder of paper machine, and control method |
| CN105926341A (en) * | 2016-04-27 | 2016-09-07 | 陕西科技大学 | Energy consumption cooperating device for drying part of toilet paper machine and control system of energy consumption cooperating device |
| CN206916529U (en) * | 2017-06-16 | 2018-01-23 | 陕西科技大学 | A kind of high speed toilet paper machine exempts from heat pump drying device |
-
2017
- 2017-06-16 CN CN201710458993.0A patent/CN107142773B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661535A (en) * | 1968-09-13 | 1972-05-09 | Singmaster & Breyer | Process for drying hydrophilic ores and recovering sulfur therefrom |
| JPS5959993A (en) * | 1982-09-22 | 1984-04-05 | 株式会社加藤電気商会 | Steam utilizing system of dryer |
| CN102410755A (en) * | 2011-12-16 | 2012-04-11 | 亿恒节能科技江苏有限公司 | Multi-effect flash evaporation system for utilizing condensed water waste heat in air-heating coil group |
| CN202869180U (en) * | 2012-10-09 | 2013-04-10 | 陕西科技大学 | Comprehensive utilization and switch device of different quality steam |
| CN203247454U (en) * | 2013-05-09 | 2013-10-23 | 陕西科技大学 | Hot air temperature control device of sealed air hood |
| CN104264525A (en) * | 2014-09-24 | 2015-01-07 | 陕西科技大学 | Automatic early-warning and elimination system for water accumulation in drying cylinder of paper machine, and control method |
| CN105926341A (en) * | 2016-04-27 | 2016-09-07 | 陕西科技大学 | Energy consumption cooperating device for drying part of toilet paper machine and control system of energy consumption cooperating device |
| CN206916529U (en) * | 2017-06-16 | 2018-01-23 | 陕西科技大学 | A kind of high speed toilet paper machine exempts from heat pump drying device |
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| Publication number | Publication date |
|---|---|
| CN107142773B (en) | 2018-12-14 |
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Effective date of registration: 20220316 Address after: 715100 guanchi Town Industrial Park, Dali County, Weinan City, Shaanxi Province Patentee after: Dali Cailun Paper Co.,Ltd. Address before: No. 1, Weiyang District university garden, Xi'an, Shaanxi Province, Shaanxi Patentee before: SHAANXI University OF SCIENCE & TECHNOLOGY |