CN206731295U - Anti-shake electric control loop for coal pulverizer - Google Patents
Anti-shake electric control loop for coal pulverizer Download PDFInfo
- Publication number
- CN206731295U CN206731295U CN201720480855.8U CN201720480855U CN206731295U CN 206731295 U CN206731295 U CN 206731295U CN 201720480855 U CN201720480855 U CN 201720480855U CN 206731295 U CN206731295 U CN 206731295U
- Authority
- CN
- China
- Prior art keywords
- relay
- terminal
- normally opened
- opened contact
- coil
- 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.)
- Active
Links
Landscapes
- Disintegrating Or Milling (AREA)
Abstract
The utility model provides a kind of anti-shake electric control loop for coal pulverizer, and it includes：The time relay, starting relay and startup terminal；The time relay includes set coil and normally opened contact；The starting relay includes coil, normally opened contact；It is described to start terminal to start the terminal of coal pulverizer；The normally opened contact for starting terminal, the normally opened contact of the starting relay and the time relay is in parallel to form the first electrical combination, the coils from parallel connection of coils of the set coil of the time relay and the starting relay forms second circuit combination, and first electrical combination and second circuit combined serial are connected between live wire and zero line.Not only loop is simple for the utility model, and practical, can be applicable to any industrial control field, so as to ensure the lasting of industrial equipment, stable operation.
Description
Technical field
A kind of coal mill control device is the utility model is related to, more particularly to a kind of anti-shake electric control for coal pulverizer is returned
Road.
Background technology
As the coal pulverizers such as power plant are using the production increase of unit, business electrical amount increases step by step, if its grid condition
It is bad, by bringing huge economic loss using unit, therefore its grid supply quality is needed to keep a close eye on, such as
Anti-shake power technology needs to pay close attention to, and keeps the stable operation of power network and coal pulverizer.
Shake electricity and refer to the phenomenon of the fluctuation of power network short time voltage or short supply interruption caused by thunderbolt, short circuit or other reasonses.
Electric power system, which produces the fundamental type for shaking electricity, to be had:Voltage dip, rise sharply, short supply interruption, voltage flicker.The voltage swells duration
0.5 cycle, voltage was risen or fallen to the 110~180% of nominal voltage to 1min.Voltage dip/rapid drawdown is that voltage is effective
Value is down to the 10% to 90% of nominal value (Nominal Value), and the duration is that (Typical duration is 10ms to 1min
10ms~600ms).Power failure (such as prepared auto restart, reclosing) of the short supply interruption duration in 0.5 cycle to 3s.Electricity
Pressure flickering refers to voltage waveform envelope in a series of random change of the change of rule or voltage magnitude, normally behaves as human eye pair
The extremely caused visual experience of illumination caused by voltage pulsation.
It can be seen that shaking, electrical lesion is larger, and industry takes many kinds of measures to avoid it, but current anti-shake power technology is more
Complexity, not only control circuit is complicated, and operation is also complex, the problems such as causing cost height, easily break down.
The content of the invention
The purpose of this utility model is to provide a kind of anti-shake electric control loop for coal pulverizer, with the side of simple and fast
Formula solves the problems, such as to shake electrical lesion coal pulverizer.
To achieve these goals, the utility model provides following technical scheme：
A kind of anti-shake electric control loop for coal pulverizer, it includes：The time relay, starting relay and start end
Son；The time relay includes set coil and normally opened contact；The starting relay includes coil and normally opened contact；It is described
Start terminal to start the terminal of coal pulverizer；It is described start terminal, the starting relay normally opened contact and the time after
The normally opened contact of electrical equipment first electrical combination of formation in parallel, the set coil of the time relay and the starting relay
Coils from parallel connection of coils forms second circuit combination, and first electrical combination and the second circuit combined serial are connected to live wire and zero
Between line.
In the anti-shake electric control loop for coal pulverizer as described above, it is preferable that the anti-shake electric control loop is also
Also include resetting coil including stopping terminal and slew relay, the time relay；The stopping terminal is described in stopping
The terminal of coal pulverizer running；The slew relay includes coil, normally opened contact and normally-closed contact；It is described stopping terminal with it is described
The coil of slew relay connects to form tertiary circuit combination, the tertiary circuit combination and first circuit being connected in series
Combination and second circuit combination are connected in parallel between live wire and zero line；The normally-closed contact of the slew relay is series at
Between first electrical combination and the second circuit combination, the normally opened contact of the slew relay and the time relay
Resetting coil is connected.
Analysis understands that the utility model uses the time relay for being used to be delayed, and carrys out the control loop of interlock,
After realizing that unstable in the line voltage short time or instantaneous voltage is lost, line voltage recovers within the time of setting
When normal, coal pulverizer is shut down restarting, realize the continuous service of coal pulverizer, improve production efficiency.It can be seen that this practicality
It is new can simply, efficiently reduce rolling electricity to caused by equipment influence, not only loop is simple, and practical, can apply
In any industrial control field, so as to ensure the continuing of industrial equipment, stable operation.
Brief description of the drawings
Fig. 1 is the theory structure and time relay locking figure of the utility model preferred embodiment；
Fig. 2 is the time relay reset diagram of the utility model preferred embodiment.
Embodiment
The utility model is described in further details with reference to the accompanying drawings and detailed description.
As shown in Figure 1 and Figure 2, this preferred embodiment includes：Time relay ST, starting relay KA1 and startup terminal
(X:1, X:2).In order to react the concrete application of this preferred embodiment, Fig. 1 also show live wire L, zero line N.
Specifically, time relay ST includes set coil ST (7,2) and normally opened contact ST (6,8).Starting relay KA1
Including normally opened contact KA1 (12,8) and coil KA1 (12,8).Start terminal (X:1, X:2), the normally opened of starting relay KA1 touches
Point KA1 (12,8) and time relay ST normally opened contact ST (6,8) is in parallel to form the first electrical combination, time relay ST's
Set coil ST (7,2) and starting relay KA1 coil KA1 (13,14) is in parallel to form second circuit combination, the first circuit group
Close and second circuit combined serial is connected between live wire L and zero line N.In practice, can according to actual conditions, set the time after
Electrical equipment ST delay time, voluntarily the voltage shock avoiding time is adjusted to realize.
The use process to this anti-shake electric control loop illustrates below：
For this preferred embodiment when line voltage is normal, starting-up later time is normal, and short circuit starts terminal X (1,2), starts relay
Device KA1 coil KA1 (13,14) must be electric, and starting relay KA1 is kept by normally opened contact (latching point) KA1 (12,8), simultaneously
Time-delay relay ST set coils ST (7,2) obtains electric, normally opened contact ST (6,8) contact closure, now loop normal work.
Unstable or in the case of losing moment (occur shake electricity), the starting relay KA1 coil KA1 in line voltage
(13,14) lose voltage, and starting relay KA1 normally opened contact KA1 (12,8) is opened, and starting relay KA1 can not be carried out
Self-sustaining, now time relay ST normally opened contact ST (6,8) still close, keep the connection in starting relay KA1 loops.
Within the time of time relay ST adjustment, line voltage recovers normal, now normal due to time relay ST
It is closure to open contact ST (6,8), therefore coil KA1 (13,14) can obtain electric, and normally opened contact KA1 (12,8) closes self-locking,
Starting relay KA1 recovers normal operating conditions.
By setting the time relay to be fallen with the locking of the time relay to skip power network come the starting-up later time of interlock
Electricity or voltage instability time, make in the case where control voltage is instantaneously lost or reduced, control loop setting when
It is interior to be still switched on state, so as to realize in the case of setting in the time if line voltage recovery is normal, make coal-grinding
Machine can voluntarily start.
It can stop smoothly to shut down in the case of in order to meet artificial shut down so that control maneuverability, control loop are also wrapped
Include：Including stopping terminal (X:3, X:4) and slew relay KA2, the time relay also include resetting coil ST (3,4).Stop
Relay KA2 includes coil KA2 (13,14), normally opened contact KA2 (12,8), normally-closed contact KA2 (9,1).Slew relay KA2
Normally-closed contact KA2 (9,1) be series between the first electrical combination and second circuit combination, stop terminal (X:3, X:4) with stopping
Only relay KA2 coil KA2 (13,14) series connection forms tertiary circuit combination, tertiary circuit combination and be connected in series first
Electrical combination and second circuit combination are connected in parallel between live wire L and zero line N；Slew relay coil KA2 normally opened contact
KA2 (12,8) and time relay ST resetting coil ST (3,4) connects (shown in Fig. 2).
It is applied to the operation instruction of situation artificially shut down to this anti-shake electric control loop below：
When artificial shut down, short circuit stops terminal (X:3, X4), the coil KA2 (13,14) of slew relay obtains electric work,
Slew relay KA2 normally-closed contact KA2 (9,1) is opened, now coil KA1 (13,14) dead electricity, normally opened contact KA1 (12,8)
Open, such as Fig. 2, slew relay KA2 normally opened contact KA2 (12,8) closures, time relay ST resetting coil ST (3,4)
Closure, time relay ST are resetted, and normally opened contact ST (6,8) also is changed into opening from closure immediately, and now loop is stopped.
It should be noted that the numeral in above-mentioned bracket is only the pin numbering for representing respective element, it is not meant to limit
Element, such as the type of element, pin numbering.
To sum up, the utility model is closed using the time relay of an on-delay inside control loop by loop
Lock mode, realize anti-shake Electricity Functional.With multiple advantages：Loop is simple, it is anti-interference it is strong, be widely used, cost is low, is easy to repair
Deng, and application industry is wide, available for the work including the industrial control field of industry-by-industry, such as chemical industry, steel, thermoelectricity, oil etc.
Industry field, the good operation of equipment can be ensured, improve production efficiency.
As known by the technical knowledge, the utility model can pass through other essence without departing from its spirit or the reality of essential feature
Scheme is applied to realize.Therefore, embodiment disclosed above, for each side, all it is merely illustrative, is not only
's.It is all in the scope of the utility model or in the change being equal in the scope of the utility model by the utility model bag
Contain.
Claims (2)
- A kind of 1. anti-shake electric control loop for coal pulverizer, it is characterised in that including：The time relay, starting relay with And start terminal；The time relay includes set coil and normally opened contact；The starting relay includes coil and normally opened contact；It is described to start terminal to start the terminal of coal pulverizer；The normally opened contact for starting terminal, the normally opened contact of the starting relay and the time relay in parallel forms the The coils from parallel connection of coils of one electrical combination, the set coil of the time relay and the starting relay forms second circuit group Close, first electrical combination and the second circuit combined serial are connected between live wire and zero line.
- 2. the anti-shake electric control loop according to claim 1 for coal pulverizer, it is characterised in that the anti-shake electric control Loop, which also includes stopping terminal and slew relay, the time relay, also includes resetting coil；It is described to stop terminal to stop the terminal of the coal pulverizer running；The slew relay includes coil, normally opened contact and normally-closed contact；The stopping terminal connecting to form tertiary circuit and combine with the coil of the slew relay, the tertiary circuit combine and First electrical combination being connected in series and second circuit combination are connected in parallel between live wire and zero line；The normally-closed contact of the slew relay is series between the first electrical combination and the second circuit combination, the stopping The normally opened contact of relay is connected with the resetting coil of the time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720480855.8U CN206731295U (en) | 2017-05-03 | 2017-05-03 | Anti-shake electric control loop for coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720480855.8U CN206731295U (en) | 2017-05-03 | 2017-05-03 | Anti-shake electric control loop for coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206731295U true CN206731295U (en) | 2017-12-12 |
Family
ID=60562615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720480855.8U Active CN206731295U (en) | 2017-05-03 | 2017-05-03 | Anti-shake electric control loop for coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206731295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944498A (en) * | 2021-02-04 | 2021-06-11 | 泰豪科技股份有限公司 | Control circuit of mobile dehumidifier |
-
2017
- 2017-05-03 CN CN201720480855.8U patent/CN206731295U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944498A (en) * | 2021-02-04 | 2021-06-11 | 泰豪科技股份有限公司 | Control circuit of mobile dehumidifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104267315A (en) | Combined type island detection method based on initiative frequency shift and voltage amplitude change | |
| CN206731295U (en) | Anti-shake electric control loop for coal pulverizer | |
| CN109474206B (en) | Intelligent restarting device and method after power-shaking of beam pumping unit configured power frequency direct start | |
| CN203589836U (en) | Intelligent control apparatus of starting signal for diesel generating set | |
| CN102709875B (en) | Under-voltage and over-voltage two-way release | |
| CN108092271B (en) | Phase three-wire three series type dynamic voltage compensation device | |
| CN202616742U (en) | Zero-voltage time-delay electrical apparatus release | |
| CN203883721U (en) | Oil pumping machine self-starting permanent magnet synchronous motor compensating type voltage regulator | |
| CN204928360U (en) | A prevent shaking electric installation for series capacitance formula ac contactor | |
| CN204009723U (en) | Main frame and peripheral hardware switching sequence control device | |
| CN209267148U (en) | A kind of anti-shake electric circuit | |
| CN206023175U (en) | A kind of under-voltage automatic protection breakers with deferred action function | |
| CN107026483B (en) | A kind of compound phase shifting control strategy under the DC transmission system inverter side AC fault suitable for LCC | |
| CN106410846B (en) | The low-voltage ride-through method of microgrid inverter | |
| CN111384711A (en) | Phase-dislocation protection device based on charging pile system and use method thereof | |
| CN110838711A (en) | Anti-interference circuit | |
| CN203882133U (en) | Power-restoring-after-power-failure automatic delaying power distribution device | |
| CN209030125U (en) | Intelligent Restarter after the rolling electricity that beam pumping unit configuration power frequency directly opens | |
| CN209150794U (en) | A kind of oil well control cabinet of sustainable power supply | |
| CN217282760U (en) | Motor control circuit of oil pumping unit | |
| CN111376765B (en) | Self-resetting control circuit for charging pile after emergency stop and cut-off and use method thereof | |
| CN104467550A (en) | Device and method for delayed motor starting | |
| CN219611353U (en) | Reactive compensation module and power saving device applying same | |
| CN205489792U (en) | Power switching over electronic circuit | |
| CN202818176U (en) | Motor electric-dazzling automatic restart control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |