CN203247454U - Hot air temperature control device of sealed air hood - Google Patents
Hot air temperature control device of sealed air hood Download PDFInfo
- Publication number
- CN203247454U CN203247454U CN 201320247553 CN201320247553U CN203247454U CN 203247454 U CN203247454 U CN 203247454U CN 201320247553 CN201320247553 CN 201320247553 CN 201320247553 U CN201320247553 U CN 201320247553U CN 203247454 U CN203247454 U CN 203247454U
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- control valve
- electric control
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- temperature
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Abstract
The utility model provides a hot air temperature control device of a sealed air hood. High-temperate steam condensed water, high-temperature secondary steam and fresh steam generated by a drying portion of a paper machine are used for heating dry and cold air to be supplied to the sealed air hood. Before the dry and cold air is heated, the high-temperature steam condensed water and the secondary steam are fully used for heating the dry and cold air firstly, if the temperature does not reach a set value, a controller further adjusts an electric adjustment valve on a fresh steam input pipeline to open a certain opening degree to continue heating the dry and hot air. The hot air temperature control device of the sealed air hood makes full use of the high-temperature steam condensed water and the high-temperature secondary steam, reduces the use amount of the fresh steam, saves energy, reduces the pollution to the environment, and is simple and convenient to operate.
Description
Technical field
The utility model relates to a kind of closed air hood hot blast wind-warm syndrome control device.
Background technology
The introducing of gas hood in the paper machine, so that oven dry section drying efficiency greatly increases, and the high temperature heated dry air of introducing in the gas hood is formed after heat exchanger and the heating of multiple tracks heater by outside cold dry air.Three grades of heaters are set usually, and primary heater passes into the high-temperature steam condensed water, and second level heater passes into high temperature secondary steam, and third level heater passes into the live steam heating.At present, this heating process is to utilize single loop control system to rely on artificial experience to control steam condensate (SC), high temperature secondary steam, live steam flow, and ignored the control of the whole heating process residual heat and energy to utilize to greatest extent Dryer Section of Paper Machine to produce, cause on the one hand energy waste, so that the rear hot blast temperature of heating is unstable, affect paper quality on the other hand.
The utility model content
The purpose of this utility model is to provide a kind of closed air hood hot blast wind-warm syndrome control device.
For achieving the above object, the utility model has adopted following technical scheme:
Comprise first order electric control valve, second level electric control valve, third level electric control valve, temperature sensor thermocouple and minute range controller module, described first order electric control valve is arranged at for the pipeline that passes into the high-temperature steam condensed water to primary heater, second level electric control valve is arranged at for the pipeline that passes into high temperature secondary steam to second level heater, third level electric control valve is arranged at for the pipeline that passes into live steam to third level heater, the temperature sensor thermocouple is arranged on the heated dry air output channel that links to each other with third level heater, minute range controller module respectively with the temperature sensor thermocouple, first order electric control valve, second level electric control valve and third level electric control valve link to each other.
The range controller module comprised the first controller, second controller and the 3rd controller in described minute, the first controller links to each other with first order electric control valve, temperature sensor thermocouple and second controller respectively, second controller links to each other with second level electric control valve, temperature sensor thermocouple and the 3rd controller respectively, and the 3rd controller links to each other with third level electric control valve and temperature sensor thermocouple respectively.
The beneficial effects of the utility model are embodied in:
Adopt the utility model electric control valve and minute range controller module have realized minute process control of heating with high-temperature steam condensed water, high temperature secondary steam and live steam; can take full advantage of high-temperature steam condensed water and high temperature secondary steam; save the live steam consumption to reach; the purpose of protection of the environment, and implement very easy.
Description of drawings
Fig. 1 is closed air hood heated dry air heat tunnel heating power schematic flow sheet;
Among the figure: 1 is high-temperature steam condensed water input channel, 2 is high temperature secondary steam input pipe road, 3 is the live steam input channel, 4 is the electric control valve on the high-temperature steam condensed water input channel, 5 is the electric control valve on the high temperature secondary steam input pipe road, 6 is the electric control valve on the live steam input channel, and 7 is high-temperature steam condensate temperature controller, and 8 is high temperature secondary vapor (steam) temperature controller, 9 is the live steam temperature controller, 10 are dried cold air, and 11 is pressure fan, and 12 is heater, 13 is check-valves, 14 is the condensate output transistor road, and 15 is the heated dry air output channel, and 16 is the temperature sensor thermocouple.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the utility model comprises first order electric control valve, second level electric control valve, third level electric control valve, temperature sensor thermocouple and minute range controller module, described first order electric control valve is arranged at for the pipeline that passes into the high-temperature steam condensed water to primary heater, second level electric control valve is arranged at for the pipeline that passes into high temperature secondary steam to second level heater, third level electric control valve is arranged at for the pipeline that passes into live steam to third level heater, the temperature sensor thermocouple is arranged on the heated dry air output channel that links to each other with third level heater, minute range controller module respectively with the temperature sensor thermocouple, first order electric control valve, second level electric control valve and third level electric control valve link to each other.The range controller module comprised the first controller, second controller and the 3rd controller for control three-grade electric control valve in described minute, the first controller links to each other with first order electric control valve, temperature sensor thermocouple and second controller respectively, second controller links to each other with second level electric control valve, temperature sensor thermocouple, the first controller and the 3rd controller respectively, and the 3rd controller links to each other with third level electric control valve, temperature sensor thermocouple and second controller respectively.
Divide range controller module controls first order electric control valve to open, at first utilize the high-temperature steam condensed water that the cold air of doing is heated to uniform temperature, dividing the range controller module to control second level electric control valve opens again, utilize high temperature secondary steam that the dry air with uniform temperature is proceeded heating, if this moment, reached closed air hood air-supply wind-warm syndrome setting value through the drying-air temperature after the high temperature secondary Steam Heating, a minute range controller module then is failure to actuate to third level electric control valve; If do not reach closed air hood air-supply wind-warm syndrome setting value through the air themperature after the high temperature secondary Steam Heating, this time-division range controller module controls third level electric control valve is opened certain aperture, utilize live steam further heated dry air to be heated until reach desired temperature, fully recycle thereby reach the residual heat and energy that Dryer Section of Paper Machine is produced, reduce the pollution to environment.
Embodiment
A kind of closed air hood hot blast wind-warm syndrome is divided the process control device, and in Fig. 1, the thermal medium that advances of three heaters 12 is controlled with electric control valve respectively, and control algolithm is PID/PI, but the control loop setting value is same numerical value.When the cold air 10 of doing enters heater 12 by pressure fan 11, at first high-temperature steam condensate temperature controller 7 is opened electric control valve 4 on the high-temperature steam condensed water input channel by control, utilizes the high-temperature steam condensed water that the cold air 10 of doing is heated; Secondly high temperature secondary vapor (steam) temperature controller 8 is opened electric control valve 5 on the high temperature secondary steam input pipe road by control, utilize high temperature secondary steam to continue the dry air with uniform temperature is heated, if this moment, temperature did not reach input closed air hood hot blast temperature setting value, electric control valve 6 on the live steam temperature controller 9 output signals control live steam input channel, controlling opening of valve, utilize live steam further hot-air to be heated, until reach desired temperature, last hot-air is sent into closed air hood by heated dry air output channel 15.
For high-temperature steam condensed water, high temperature secondary steam and the minimum live steam that can take full advantage of the Dryer Section of Paper Machine generation heats cold dry air, the utility model only has when electric control valve 4 standard-sized sheet on the high-temperature steam condensed water input channel, electric control valve 5 on the high temperature secondary steam input pipe road just begins to open, only have when electric control valve 5 standard-sized sheet on the high temperature secondary steam input pipe road, the electric control valve 6 on the live steam input channel just begins to open; But the electric control valve 4 on the high-temperature steam condensed water input channel will keep a minimum aperture, to keep the in stable condition of steam condensate (SC) therrmodynamic system.
The utility model will divide process control to apply in the heating cold dry air process, can realize high-temperature steam condensed water, high temperature secondary steam taken full advantage of and save the live steam steam consumption, so that heat exchanger and heater at different levels at any time can both be fully used, hot blast temperature after the heating is stable, and easy and simple to handle.
Claims (2)
1. closed air hood hot blast wind-warm syndrome control device, it is characterized in that: comprise first order electric control valve, second level electric control valve, third level electric control valve, temperature sensor thermocouple and minute range controller module, described first order electric control valve is arranged at for the pipeline that passes into the high-temperature steam condensed water to primary heater, second level electric control valve is arranged at for the pipeline that passes into high temperature secondary steam to second level heater, third level electric control valve is arranged at for the pipeline that passes into live steam to third level heater, the temperature sensor thermocouple is arranged on the heated dry air output channel that links to each other with third level heater, minute range controller module respectively with the temperature sensor thermocouple, first order electric control valve, second level electric control valve and third level electric control valve link to each other.
2. described a kind of closed air hood hot blast wind-warm syndrome control device according to claim 1, it is characterized in that: the range controller module comprised the first controller, second controller and the 3rd controller in described minute, the first controller links to each other with first order electric control valve, temperature sensor thermocouple and second controller respectively, second controller links to each other with second level electric control valve, temperature sensor thermocouple and the 3rd controller respectively, and the 3rd controller links to each other with third level electric control valve and temperature sensor thermocouple respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320247553 CN203247454U (en) | 2013-05-09 | 2013-05-09 | Hot air temperature control device of sealed air hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320247553 CN203247454U (en) | 2013-05-09 | 2013-05-09 | Hot air temperature control device of sealed air hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203247454U true CN203247454U (en) | 2013-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320247553 Expired - Fee Related CN203247454U (en) | 2013-05-09 | 2013-05-09 | Hot air temperature control device of sealed air hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203247454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142773A (en) * | 2017-06-16 | 2017-09-08 | 陕西科技大学 | A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System and control method |
-
2013
- 2013-05-09 CN CN 201320247553 patent/CN203247454U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142773A (en) * | 2017-06-16 | 2017-09-08 | 陕西科技大学 | A kind of high speed toilet paper machine exempts from Analysis of Heat Pump Drying System and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIANYANG XIWEI AUTOMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY Effective date: 20150505 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710021 XI'AN, SHAANXI PROVINCE TO: 712081 XIANYANG, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150505 Address after: 712081, room 24, building 604, Renmin compound, Renmin West Road, Xianyang, Shaanxi Patentee after: Xianyang West micro Automation Technology Co., Ltd. Address before: 710021 Shaanxi province Xi'an Weiyang University Park No. 1 Patentee before: Shaanxi University of Science and Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20190509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |