CN105756982A - Frequency conversion control system of boiler - Google Patents
Frequency conversion control system of boiler Download PDFInfo
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- CN105756982A CN105756982A CN201410777380.XA CN201410777380A CN105756982A CN 105756982 A CN105756982 A CN 105756982A CN 201410777380 A CN201410777380 A CN 201410777380A CN 105756982 A CN105756982 A CN 105756982A
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- loop
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- stove
- frequency
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- 238000006243 chemical reaction Methods 0.000 title abstract 5
- 238000005276 aerator Methods 0.000 claims description 20
- 230000007257 malfunction Effects 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a frequency conversion control system of a boiler. The system comprises a furnace induced draft fan, a furnace blower, and a make-up pump. A bus is connected with each sub-breaker through a disconnecting switch. Each sub-breaker is connected with the furnace induced draft fan, the furnace blower, and the make-up pump. A frequency converter is connected among each sub-breaker, the furnace induced draft fan, the furnace blower, and the make-up pump. A time relay is connected in a frequency conversion control circuit of the furnace induced draft fan. The time relay controls the furnace induced draft fan to operate, and then the furnace blower operates in a delayed manner. The furnace induced draft fan, the furnace blower, and the make-up pump of the system are controlled in a frequency conversion manner, and can regulate speed in a stepless manner. The frequency conversion control system saves energy and is environmental-friendly, and requirements on voltage is lower, noise is lower, and control is more accurate.
Description
Technical field
The invention belongs to field of boilers, relate to the electrical control of boiler, the frequency-changing control system of especially a kind of boiler.
Background technology
The operation such as the start and stop of the equipment such as the air-introduced machine of conventional boiler factory, aerator, small pump is both needed to very important person and regulates and controls by hand, and operation not only bothers but also dangerous.Do not carry out Integration Design, the single control of each equipment, it is impossible to centralized Control；Each blower fan and water pump single speed run, not energy-conservation；Show without work and fault picture.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art part, it is provided that the frequency-changing control system of a kind of energy-conservation and safe and reliable boiler.
This invention address that technical problem be the technical scheme is that
A kind of frequency-changing control system of boiler, including stove air-introduced machine, stove aerator and small pump, bus connects each point of chopper respectively by isolating switch, each point of chopper is connected with stove air-introduced machine, stove aerator and small pump more respectively, at each point of chopper and stove air-introduced machine, between stove aerator and small pump, it is also respectively connected with converter, being connected to the time relay in the VFC loop of stove air-introduced machine, this time relay controls stove aerator time delay after stove air-introduced machine runs and runs.
And, after described stove air-introduced machine runs 1-99S, stove aerator runs.
And, the VFC loop of described stove air-introduced machine includes starting/stopping controlling loop, converter loop, external fault control loop, operation instruction loop, internal fault instruction loop and test loop.
And, described startup/stopping controls loop and includes starting-up later time and stop loop, the normally opened contact of relay 1K1 in parallel with starting switch in starting-up later time so that it is form self-locking circuit；The long closed contact of time relay 2KT normally opened contact in parallel with shutdown switch and relay 5K1 in stop loop, is also sequentially connected in series the normally-closed contact of relay 1K3 and relay 1K4 and the coil of relay 1K1 in startup/stop loop.
And, at the normally opened contact starting terminal connection relay 1K1 of converter in described converter loop, run signal at converter indicates the coil of the 1K2 of terminal connection relay, with the coil of the coils from parallel connection of coils 1KT of 1K2, the fault-signal at converter indicates the coil that terminal connects relay 1K3.
And, control loop is connected to the coil of relay 1K4 at described external fault.
And, run, described, the normally opened contact and the run indicator HG1 that are in series with relay 1K2 in instruction loop.
And, described internal fault instruction loop is sequentially connected in series normally opened contact and the malfunction indicator lamp HR1 of relay 1K3.
And, described test loop is connected to the coil of relay 5K1.
Advantages of the present invention and having the benefit effect that
1, native system achieves Integration Design and the making of boiler room electrical control so that the operation of each equipment is safer, and reliably, work and fault all can show at guidance panel epigraph.
2, the stove air-introduced machine of native system, stove aerator and small pump are VFC, it is possible to stepless time adjustment, not only energy-saving and environmental protection, and to the requirement of voltage also lower, noise is little, it is more accurate to control.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of native system；
The converter that Fig. 2 is native system air-introduced machine connects circuit diagram；
Fig. 3 is the guidance panel schematic diagram of native system.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, the invention will be further described, and following example are illustrative, are not determinate, it is impossible to limit protection scope of the present invention with this.
The frequency-changing control system of a kind of boiler, including stove air-introduced machine, stove aerator and small pump, bus connects each point of chopper respectively by isolating switch QF1, and each point of chopper is connected with stove air-introduced machine, stove aerator and small pump more respectively.At each point of chopper and stove air-introduced machine, between stove aerator and small pump, it is also associated with converter.
The VFC loop of stove air-introduced machine is as shown in Figure 2, loop, converter loop, external fault control loop, operation instruction loop, internal fault instruction loop and test loop is controlled including starting/stopping, described startup/stopping controls loop and includes starting-up later time and stop loop, the normally opened contact of relay 1K1 in parallel with starting switch in starting-up later time so that it is form self-locking circuit；The long closed contact of time relay 2KT normally opened contact in parallel with shutdown switch and relay 5K1 in stop loop, is also sequentially connected in series the normally-closed contact of relay 1K3 and relay 1K4 and the coil of relay 1K1 in startup/stop loop.
At the normally opened contact starting terminal connection relay 1K1 of converter in described converter loop, run signal at converter indicates the coil of the 1K2 of terminal connection relay, with the coil of the coils from parallel connection of coils 1KT of 1K2, the fault-signal at converter indicates the coil that terminal connects relay 1K3.
Control loop is connected to the coil of relay 1K4 at described external fault.
The normally opened contact and the run indicator HG1 that are in series with relay 1K2 in instruction loop is run described.
Described internal fault instruction loop is sequentially connected in series normally opened contact and the malfunction indicator lamp HR1 of relay 1K3.
Described test loop is connected to the coil of relay 5K1.
The operation principle of this frequency-changing control system is:
When the startup button pressing lower guidance panel, starting switch Guan Bi, relay 1K1 connect, converter is started working, guidance panel can pass through the frequency of the given converter of manual operator, and the actual output frequency of this converter can in the display screen display of guidance panel, when converter is properly functioning, relay 1K2 adhesive, run indicator HG1 is bright；When converter breaks down, relay 1K3 adhesive, malfunction indicator lamp HR1 is bright；Make converter close by interlocking signal simultaneously.When the effect of relay 1K4,1K4 of being also associated with in this control loop is to break down outside converter, 1K4 makes converter quit work by interlocking signal equally.
Owing to stove aerator and stove air-introduced machine need chain promoter, after air-introduced machine runs, aerator runs, this control loop is also associated with relay 5K1, time relay 2KT normally opened contact in parallel on shutdown switch, 2KT can control the interval opening time of aerator and air-introduced machine, and the interval time of described stove air-introduced machine and stove aerator is that 1-99S is adjustable.If in the debugging stage, it is necessary to when stove air-introduced machine separate unit starts, 5K1 coil obtains electric, cancellation air-introduced machine is chain with aerator.
Above-described is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, under the premise without departing from inventive concept, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (9)
1. the frequency-changing control system of a boiler, including stove air-introduced machine, stove aerator and small pump, bus connects each point of chopper respectively by isolating switch, each point of chopper is connected with stove air-introduced machine, stove aerator and small pump more respectively, it is characterized in that: at each point of chopper and stove air-introduced machine, between stove aerator and small pump, be also respectively connected with converter, being connected to the time relay in the VFC loop of stove air-introduced machine, this time relay controls stove aerator time delay after stove air-introduced machine runs and runs.
2. the frequency-changing control system of boiler according to claim 1, it is characterised in that: after described stove air-introduced machine runs 1-99S, stove aerator runs.
3. the frequency-changing control system of boiler according to claim 1, it is characterised in that: the VFC loop of described stove air-introduced machine includes starting/stopping controlling loop, converter loop, external fault control loop, operation instruction loop, internal fault instruction loop and test loop.
4. the frequency-changing control system of boiler according to claim 3, it is characterized in that: described startup/stopping controls loop and includes starting-up later time and stop loop, the normally opened contact of relay 1K1 in parallel with starting switch in starting-up later time so that it is form self-locking circuit；The long closed contact of time relay 2KT normally opened contact in parallel with shutdown switch and relay 5K1 in stop loop, is also sequentially connected in series the normally-closed contact of relay 1K3 and relay 1K4 and the coil of relay 1K1 in startup/stop loop.
5. the frequency-changing control system of boiler according to claim 3, it is characterized in that: at the normally opened contact starting terminal connection relay 1K1 of converter in described converter loop, run signal at converter indicates the coil of the 1K2 of terminal connection relay, with the coil of the coils from parallel connection of coils 1KT of 1K2, the fault-signal at converter indicates the coil that terminal connects relay 1K3.
6. the frequency-changing control system of boiler according to claim 3, it is characterised in that: control loop is connected to the coil of relay 1K4 at described external fault.
7. the frequency-changing control system of boiler according to claim 3, it is characterised in that: run, described, the normally opened contact and the run indicator HG1 that are in series with relay 1K2 in instruction loop.
8. the frequency-changing control system of boiler according to claim 3, it is characterised in that: in described internal fault instruction loop, it is sequentially connected in series normally opened contact and the malfunction indicator lamp HR1 of relay 1K3.
9. the frequency-changing control system of boiler according to claim 3, it is characterised in that: in described test loop, it is connected to the coil of relay 5K1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777380.XA CN105756982A (en) | 2014-12-16 | 2014-12-16 | Frequency conversion control system of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777380.XA CN105756982A (en) | 2014-12-16 | 2014-12-16 | Frequency conversion control system of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105756982A true CN105756982A (en) | 2016-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410777380.XA Pending CN105756982A (en) | 2014-12-16 | 2014-12-16 | Frequency conversion control system of boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN105756982A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403943A (en) * | 1980-05-06 | 1983-09-13 | R.B.L. Riello Bruciatori Legnago S.P.A. | Flame surveying means in burner ignition |
| CN2054147U (en) * | 1989-05-11 | 1990-03-07 | 大连锅炉机电工程处 | Boiler interlock protector |
| CN2141035Y (en) * | 1992-10-15 | 1993-08-25 | 王庆余 | Coal-saving and accident-averting interlocking device for medium and small boilers |
| CN101893228A (en) * | 2009-05-19 | 2010-11-24 | 北京高和华泰节能环保科技有限公司 | Circuit of intelligent power saving device for heating boiler system |
| CN201976067U (en) * | 2010-12-13 | 2011-09-14 | 王海平 | Variable frequency control device of fan |
| CN203323395U (en) * | 2013-05-07 | 2013-12-04 | 烟台双益节电设备有限公司 | Dual-operation system for control cabinet of boiler |
| CN203470132U (en) * | 2013-09-22 | 2014-03-12 | 新疆新路标光伏材料有限公司 | Protection and control device for Raymond mill |
| CN204344502U (en) * | 2014-12-16 | 2015-05-20 | 天津宏顺源科技有限公司 | A kind of frequency-changing control system of boiler |
-
2014
- 2014-12-16 CN CN201410777380.XA patent/CN105756982A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403943A (en) * | 1980-05-06 | 1983-09-13 | R.B.L. Riello Bruciatori Legnago S.P.A. | Flame surveying means in burner ignition |
| CN2054147U (en) * | 1989-05-11 | 1990-03-07 | 大连锅炉机电工程处 | Boiler interlock protector |
| CN2141035Y (en) * | 1992-10-15 | 1993-08-25 | 王庆余 | Coal-saving and accident-averting interlocking device for medium and small boilers |
| CN101893228A (en) * | 2009-05-19 | 2010-11-24 | 北京高和华泰节能环保科技有限公司 | Circuit of intelligent power saving device for heating boiler system |
| CN201976067U (en) * | 2010-12-13 | 2011-09-14 | 王海平 | Variable frequency control device of fan |
| CN203323395U (en) * | 2013-05-07 | 2013-12-04 | 烟台双益节电设备有限公司 | Dual-operation system for control cabinet of boiler |
| CN203470132U (en) * | 2013-09-22 | 2014-03-12 | 新疆新路标光伏材料有限公司 | Protection and control device for Raymond mill |
| CN204344502U (en) * | 2014-12-16 | 2015-05-20 | 天津宏顺源科技有限公司 | A kind of frequency-changing control system of boiler |
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Application publication date: 20160713 |
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