CN104154526A - Steam generator feed water control device - Google Patents
Steam generator feed water control device Download PDFInfo
- Publication number
- CN104154526A CN104154526A CN201410382570.1A CN201410382570A CN104154526A CN 104154526 A CN104154526 A CN 104154526A CN 201410382570 A CN201410382570 A CN 201410382570A CN 104154526 A CN104154526 A CN 104154526A
- Authority
- CN
- China
- Prior art keywords
- steam generator
- feed water
- control device
- generator body
- feed pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a steam generator feed water control device, and belongs to the technical field of wood processing. The steam generator feed water control device comprises a steam generator body, a water inlet of the steam generator body is communicated with a feed water pump which is driven by a motor, and the motor is connected with a frequency converter; a signal feedback input end of the frequency converter is connected with a pressure sensor through a PLC, and the sensing end of the pressure sensor is arranged in the steam generator body. The steam generator feed water control device can solve the problem that steam pressure fluctuates due to unstable feed water flow of the feed water pump.
Description
Technical field
The present invention relates to wood processing technique field, especially a kind of steam generator feeding water controller of the defibrator process cooking process of producing for medium density fibre board (MDF).
Background technology
In the production process of medium density fibre board (MDF), will be through the choosing of raw material, chip, screen, the operation such as washing, defibrator process boiling, in defibrator process cooking process, affecting defibrator process boiling situation, to cause one of crux that raw fibre is thick and thin be the fluctuation of steam pressure value in digestion process, the metal parts that simultaneously frequent fluctuation of steam pressure also can make steam generator often, under alternate stress effect, easily causes the damage of steam generator; And the main cause of steam pressure value fluctuation is the water-level fluctuation in steam generator.A kind of as the steam generator feeding water controller of Fig. 2, include the feed pump 12 being communicated with steam generator body 14 water inlets by pneumatic control valve 13, the valve control end of pneumatic control valve 13 is connected with differential pressure pickup 11, and the induction end of differential pressure pickup 11 is arranged in steam generator body 14; When work, differential pressure pickup 11 transmission of pressure signals are controlled the flow of inlet water of feed pump 12 by pneumatic control valve 13.This device exists: because the feedwater pneumatic operated valve position of the switch is accurate not and response speed causes feed pump feedwater flow unstable slowly, cause the water-level fluctuation in steam generator 1.; 2. because feed pump frequency is invariable, cannot, according to the FEEDBACK CONTROL discharge of water level height in steam generator, cause water level too high or too low, cause the problem of the fluctuation of steam pressure.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of steam generator feeding water controller, and this steam generator feeding water controller can solve the unstable problem that causes steam pressure to produce fluctuation of feed pump feedwater flow.
In order to address the above problem, the technical solution adopted in the present invention is: this steam generator feeding water controller, comprise steam generator body, and the water inlet of described steam generator body is communicated with feed pump, described feed pump is by driven by motor, and described motor is connected with frequency converter.
In technique scheme, technical scheme can also be more specifically: the signal feedback input of described frequency converter is connected with differential pressure pickup by Programmable Logic Controller, and the induction end of described differential pressure pickup is arranged in described steam generator body.
Owing to having adopted technique scheme, the present invention compared with prior art has following beneficial effect:
1, owing to carrying out the rotating speed of control pump with Frequency Converter Control motor, automatically control the inflow of feed pump, having realized water level regulates automatically, make the stability of flow of feed pump, thereby ensure that steam generator produces the constant of steam pressure, the raw fibre even thickness that not only makes output, has improved product quality, has also ensured the safe operation of steam generator and feedwater piping.
2, the present invention is simple in structure, and effect is remarkable, has saved labour cost and equipment cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Fig. 2 is existing steam generator feeding water controller schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
Steam generator feeding water controller shown in Fig. 1, comprise steam generator body 6 and feed pump 5, steam generator body 6 offers water inlet and steam (vapor) outlet 6b, and feed pump 5 water inlets are communicated with water intaking valve 4, and the delivery port of feed pump 5 is connected with the water inlet 6a of steam generator body 6; Feed pump 5 drives by motor 3, and motor 3 is connected with frequency converter 2; The signal feedback input of frequency converter 2 is connected with pressure sensor 1 by Programmable Logic Controller PLC, and the induction end of pressure sensor 1 is arranged in steam generator body 6.
When work, be arranged on the induction end of the pressure sensor of steam generator body, respond to and send signal to Programmable Logic Controller PLC, Programmable Logic Controller PLC calculates rear output control signal by analysis to frequency converter, frequency converter is controlled the rotating speed of feed pump automatically according to the size of steam generator body internal pressure, the water yield of feed pump is regulated automatically, control the constant water level of maintenance in steam generator body, thereby ensure the constant of steam pressure, the not only raw fibre even thickness of output, improve product quality, also ensured the safe operation of equipment.
Claims (2)
1. a steam generator feeding water controller, comprise steam generator body (6), the water inlet of described steam generator body (6) is communicated with feed pump (5), it is characterized in that: described feed pump (5) drives by motor (3), and described motor (3) is connected with frequency converter (2).
2. steam generator feeding water controller according to claim 1, it is characterized in that: the signal feedback input of described frequency converter (2) is connected with differential pressure pickup (1) by Programmable Logic Controller (PLC), and the induction end of described differential pressure pickup (1) is arranged in described steam generator body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382570.1A CN104154526A (en) | 2014-08-06 | 2014-08-06 | Steam generator feed water control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382570.1A CN104154526A (en) | 2014-08-06 | 2014-08-06 | Steam generator feed water control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104154526A true CN104154526A (en) | 2014-11-19 |
Family
ID=51880094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410382570.1A Pending CN104154526A (en) | 2014-08-06 | 2014-08-06 | Steam generator feed water control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154526A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240206A (en) * | 2002-02-15 | 2003-08-27 | Kawasaki Thermal Engineering Co Ltd | Water supply inverter control method with pressure control correction, and device thereof |
| JP2005282932A (en) * | 2004-03-29 | 2005-10-13 | Miura Co Ltd | Water feed control method for boiler and its device |
| CN2811759Y (en) * | 2005-04-14 | 2006-08-30 | 王勇 | Automatic frequency conversion and water supplementing control apparatus for steam boiler |
| CN2898630Y (en) * | 2006-04-22 | 2007-05-09 | 陆磊 | Automatic energy-saving control system of mini-medium fired-coal chain boiler |
| CN201787563U (en) * | 2010-05-19 | 2011-04-06 | 陈功 | Regenerative automatic control energy-saving water supply device for boilers |
| CN201903047U (en) * | 2011-03-31 | 2011-07-20 | 广州大学城华电新能源有限公司 | Liquid level regulating device of boiler drum |
| CN102607012A (en) * | 2012-04-01 | 2012-07-25 | 昆明理工大学 | Energy-saving device and control method for industrial boiler water feeding system |
| CN202419634U (en) * | 2012-01-04 | 2012-09-05 | 扬州斯大锅炉有限公司 | Continuous water-replenishing control device for boiler water pump |
| CN202660524U (en) * | 2012-04-27 | 2013-01-09 | 浙江双峰锅炉制造有限公司 | Load regulating device of coal water slurry steam boiler |
| CN103388818A (en) * | 2012-05-08 | 2013-11-13 | 石馀 | Industrial boiler water supply control device |
| CN103438429A (en) * | 2013-09-09 | 2013-12-11 | 金东纸业（江苏）股份有限公司 | Boiler steam drum liquid level control system |
| CN103453515A (en) * | 2013-09-17 | 2013-12-18 | 黑龙江宏宇电站设备有限公司 | Water supply control method for 2*55MW power station boiler water supply system |
| CN103453516A (en) * | 2013-08-22 | 2013-12-18 | 黑龙江宏宇电站设备有限公司 | Application method of high-voltage frequency converter in power station boiler feed pump |
| CN204084326U (en) * | 2014-08-06 | 2015-01-07 | 广西三威林产工业有限公司 | Steam generator feeding water controller |
-
2014
- 2014-08-06 CN CN201410382570.1A patent/CN104154526A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240206A (en) * | 2002-02-15 | 2003-08-27 | Kawasaki Thermal Engineering Co Ltd | Water supply inverter control method with pressure control correction, and device thereof |
| JP2005282932A (en) * | 2004-03-29 | 2005-10-13 | Miura Co Ltd | Water feed control method for boiler and its device |
| CN2811759Y (en) * | 2005-04-14 | 2006-08-30 | 王勇 | Automatic frequency conversion and water supplementing control apparatus for steam boiler |
| CN2898630Y (en) * | 2006-04-22 | 2007-05-09 | 陆磊 | Automatic energy-saving control system of mini-medium fired-coal chain boiler |
| CN201787563U (en) * | 2010-05-19 | 2011-04-06 | 陈功 | Regenerative automatic control energy-saving water supply device for boilers |
| CN201903047U (en) * | 2011-03-31 | 2011-07-20 | 广州大学城华电新能源有限公司 | Liquid level regulating device of boiler drum |
| CN202419634U (en) * | 2012-01-04 | 2012-09-05 | 扬州斯大锅炉有限公司 | Continuous water-replenishing control device for boiler water pump |
| CN102607012A (en) * | 2012-04-01 | 2012-07-25 | 昆明理工大学 | Energy-saving device and control method for industrial boiler water feeding system |
| CN202660524U (en) * | 2012-04-27 | 2013-01-09 | 浙江双峰锅炉制造有限公司 | Load regulating device of coal water slurry steam boiler |
| CN103388818A (en) * | 2012-05-08 | 2013-11-13 | 石馀 | Industrial boiler water supply control device |
| CN103453516A (en) * | 2013-08-22 | 2013-12-18 | 黑龙江宏宇电站设备有限公司 | Application method of high-voltage frequency converter in power station boiler feed pump |
| CN103438429A (en) * | 2013-09-09 | 2013-12-11 | 金东纸业（江苏）股份有限公司 | Boiler steam drum liquid level control system |
| CN103453515A (en) * | 2013-09-17 | 2013-12-18 | 黑龙江宏宇电站设备有限公司 | Water supply control method for 2*55MW power station boiler water supply system |
| CN204084326U (en) * | 2014-08-06 | 2015-01-07 | 广西三威林产工业有限公司 | Steam generator feeding water controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201207903Y (en) | Unequal height continuous pulp boiling pot | |
| CN102259758B (en) | Hermetic feeder for vertical mill | |
| CN204084326U (en) | Steam generator feeding water controller | |
| CN205478578U (en) | Novel wash control system of sediment stuff pump | |
| CN205593195U (en) | High security boiler liquid level control system | |
| CN104154526A (en) | Steam generator feed water control device | |
| CN101994906A (en) | Flow stabilizing device | |
| CN209816551U (en) | Automatic slurry control device | |
| CN203830159U (en) | Automatic liquid-level control device for flotation machine | |
| CN209768840U (en) | Steam jet device for peptide process | |
| CN203695056U (en) | Wax emulsion production equipment | |
| CN204064695U (en) | Jetting machine detection platform | |
| CN207667619U (en) | A kind of phenols and isobutene reaction device | |
| CN105171480A (en) | Vacuum detection device | |
| CN104898628B (en) | The control system and control method of production line of circuit board liquid equipment | |
| CN216551326U (en) | Steam inlet device of defibrator | |
| CN204208334U (en) | The extraction cycle bucket that water level controls automatically | |
| CN204522872U (en) | A kind of dispersal device for filler adhesive | |
| CN205032285U (en) | Full -automatic flotation cell control system | |
| CN204211147U (en) | Air pressure feed tank | |
| CN104841631A (en) | Cyclone curved screen and application method thereof | |
| CN202958640U (en) | Intelligent continuous multi-tank soya-bean milk boiling machine | |
| CN203418617U (en) | Hot-grinding conveying device for wood fiber board production | |
| CN202129972U (en) | Plastic extruder with filter screen | |
| CN203342787U (en) | Liquid level control system of blowdown collection tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |