CN106159904B - A kind of pressure control circuit of anti-fluctuation - Google Patents
A kind of pressure control circuit of anti-fluctuation Download PDFInfo
- Publication number
- CN106159904B CN106159904B CN201610696384.4A CN201610696384A CN106159904B CN 106159904 B CN106159904 B CN 106159904B CN 201610696384 A CN201610696384 A CN 201610696384A CN 106159904 B CN106159904 B CN 106159904B
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- China
- Prior art keywords
- relay
- double
- pressure
- contact
- pole switch
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
Abstract
The invention discloses a kind of pressure control circuit of anti-fluctuation, secondary line power port A and power port B, electro connecting pressure gauge KP, intermediate relay KA1, operation contactor KM, electrothermal relay FR, start-up time delay relay KT1 including external 220V AC powers, delay turn-off time relay KT2, run indicator HD, double-pole switch QF1 and QF2, manual/auto selecting switch QF3 and QF4, stop button SB1 and start button SB2.Technical scheme of the present invention has the characteristics that simple in structure, control is reliable, easy to operate, it is suitable for controlling with water, with pressure such as gas, can be fluctuated according to ductwork pressure and from the start and stop of main regulation pressure motor, the influence that pipe network momentary fluctuation causes circuit oscillation is avoided, effectively prevents burning out for electric machinery and apparatus.
Description
Technical field
The present invention relates to a kind of control circuits, relate in particular to a kind of pressure control circuit of anti-fluctuation.
Background technology
Due to often being changed with water, gas consumption for most of enterprise and family, supply water, for unsaturated vapor or confession
The superfluous situation of water, gas supply happens occasionally.And it supplying water, supplying with water, with the uneven concentrated reflection between gas and water supply, gas supply
In the pressure of gas, as with water, with supplying water more than gas, supplying and lack, then pressure is low；With water, few with gas and supply water, supply more, then press
Power is big.Keep supply water, supply gas pressure it is constant, can make water supply, gas supply and with water, between gas keep balance, i.e., with it is more when supply
Water, gas supply are also more, with water, with gas it is few when supply water, gas supply it is also few, so as to the quality for improving water supply, supplying.
At present, the pressure control circuit used in the market is to start motor immediately when ductwork pressure reaches lower limit mostly,
Then stop motor when reaching the ductwork pressure upper limit immediately, when this control circuit causes stress abruptly increase in electric motor starting and stops
When pressure drop or ductwork pressure frequently change, there is oscillatory regime in circuit, i.e. motor just starts and just stops, and then restarts
Stop again, this situation easily causes electromotor high-temperature to burn out and circuit overloads.In addition, supply water, supply gas pressure it is constant to Mr. Yu
A little industry or special users are extremely important, in process of production, if tap water supply, gas supply insufficient pressure or break in short-term for some reason
Water may influence product quality, product rejection and equipment damage are made when serious.When fire occurs, if water supply, supply gas pressure are not
Sufficient or anhydrous supply, it is impossible to which rapid fire extinguishing may cause heavy economic losses and casualties.
Invention content
The purpose of the present invention is to provide a kind of pressure control circuits of anti-fluctuation, and the pressure control circuit is simple, control
Reliably, it is easy to operate, it can be fluctuated according to ductwork pressure from the start and stop of main regulation pressure motor, avoid pipe network wink
Shi Bodong causes the influence of circuit oscillation, effectively prevents burning out for electric machinery and apparatus.
In order to achieve the above objectives, the technical scheme is that：A kind of pressure control circuit of anti-fluctuation, including external
The secondary line power port A of 220V AC powers and power port B, it is characterised in that：The pressure control circuit further includes electricity and connects
Point pressure table KP, intermediate relay KA1, operation contactor KM, electrothermal relay FR, start-up time delay relay KT1, delay are disconnected
ETAD expected time of arrival and departure relay KT2, run indicator HD, double-pole switch QF1 and QF2, manual/auto selecting switch QF3 and QF4, stopping
Button SB1 and start button SB2；
The secondary line power port A is upper with manual/auto selecting switch QF3 and QF4 respectively after double-pole switch QF1
End, the common end of electro connecting pressure gauge KP, the upper end of timing closing contact of start-up time delay relay KT1 and centre relay
The upper end connection of the normally opened contact of device KA1；
The manual/auto selecting switch QF3 series connection stop button SB1 and start button SB2 is followed by operation contactor
One end of KM coils, the normally-closed contact of the other end concatenation electrothermal relay FR of operation contactor KM coils are followed by double-pole switch
One end of QF2；
The manual/auto selecting switch QF4 concatenated with the normally opened contact of intermediate relay KA1 after with run indicator HD
One end connection, the run indicator HD is attempted by operation contactor KM both ends；
The coil of the lower limit contact concatenation start-up time delay relay KT1 of the electro connecting pressure gauge KP is followed by bipolar
Switch one end of QF2；The coil of the upper limit contact concatenation delay turn-off time relay KT2 of electro connecting pressure gauge KP is followed by double
Pole switchs one end of QF2；
The timing closing contact of the start-up time delay relay KT1 and the normally opened contact phase of intermediate relay KA1 are simultaneously
Connection, one end after parallel connection are connect with double-pole switch QF1, and the other end is passed through to disconnect with the delay for the turn-off time relay KT2 that is delayed and be touched
The coil tandem of point and intermediate relay KA1 are followed by one end of double-pole switch QF2；
The other end of the double-pole switch QF2 connects with secondary line power port B.
In the above-mentioned technical solutions, a kind of pressure control circuit of anti-fluctuation of the present invention at work, first manual closing hand
Dynamic/automatic selector switch QF3, presses start button SB2, operation contactor KM obtains electric, motor operation.Manual/auto selection is opened
When closing QF4 closures, pressure control circuit is in automatic running state, and when ductwork pressure is normal, the normally opened of intermediate relay KA1 touches
Point disconnects, and stop button SB1 is disconnected, and operation contactor KM does not start without electricity, motor.Decline in ductwork pressure moment, electricity connects
When point pressure table KP is in lower limit, start-up time delay relay KT1 is connected, and circuit is in delay state, and motor does not start.
Ductwork pressure continues to decline, the timing closing contact timing closing of start-up time delay relay KT1, intermediate relay KA1's
Coil obtains electric, and the normally opened contact of intermediate relay KA1 is closed and self-locking, operation contactor KM coils obtain electric, electric motor starting, simultaneously
Run indicator is lighted.The upper limit is risen in ductwork pressure moment, when electro connecting pressure gauge KP is in the upper limit, is delayed turn-off time
Relay KT2 is connected, and circuit is in delay state, and motor does not stop immediately.The upper limit is persistently reached in ductwork pressure, delay disconnects
The delay break contact delay of time relay KT2 disconnects, and the coil losing electricity of intermediate relay KA1, intermediate relay KA1's is normal
Contact disconnection is opened, the coil losing electricity of operation contactor KM, motor stops, while run indicator is extinguished.
The invention has the advantages that：First, a kind of circuit letter of the pressure control circuit of anti-fluctuation of the invention
Single, control is reliable, convenient and practical；Second, electro connecting pressure gauge, the timing closing time relay are provided in circuit of the invention
, can be according to the delay time of the pressure condition start-up time delay relay KT1 of pipe network with delay turn-off time relay, it can
During so that pipe network just having arrived lower limit, motor delayed startup avoids pipe network lower limit fluctuating factor.Equally, be delayed turn-off time relay
The delay time of KT2, when so that the pipe network has just been arrived the upper limit, motor delay stops, and avoids pipe network upper limit fluctuating factor.It being capable of basis
Ductwork pressure is fluctuated from the start and stop of main regulation pressure motor, avoids the shadow that pipe network momentary fluctuation causes circuit oscillation
It rings；Third, circuit of the invention is reliable, effectively prevents burning out for electric machinery and apparatus.
Description of the drawings
Fig. 1 is a kind of circuit diagram of the pressure control circuit of anti-fluctuation of the present invention.
Specific embodiment
A kind of pressure control circuit of anti-fluctuation of the present invention is described in further detail below in conjunction with the accompanying drawings.
As seen from Figure 1, a kind of pressure control circuit of anti-fluctuation of the present embodiment includes the two of external 220V AC powers
Secondary line power port A and power port B, electro connecting pressure gauge KP, intermediate relay KA1, operation contactor KM, electrothermal relay
FR, start-up time delay relay KT1, delay turn-off time relay KT2, run indicator HD, double-pole switch QF1 and QF2,
Manual/auto selecting switch QF3 and QF4, stop button SB1 and start button SB2.
In the present embodiment, secondary line power port A after double-pole switch QF1 respectively with manual/auto selecting switch QF3 and
The upper end of QF4, the common end of electro connecting pressure gauge KP, start-up time delay relay KT1 timing closing contact upper end and
The upper end connection of the normally opened contact of intermediate relay KA1.Manual/auto selecting switch QF3 series connection stop button SB1 and startup are pressed
Button SB2 is followed by one end of operation contactor KM coils, and the other end concatenation electrothermal relay FR's of operation contactor KM coils is normal
Closed contact is followed by one end of double-pole switch QF2, the normally opened contact string of manual/auto selecting switch QF4 and intermediate relay KA1
It connects one end afterwards with run indicator HD to connect, run indicator HD is attempted by operation contactor KM both ends.Electro connecting pressure gauge
The coil of the lower limit contact concatenation start-up time delay relay KT1 of KP is followed by one end of double-pole switch QF2；Electric contact pressure
The coil of the upper limit contact concatenation delay turn-off time relay KT2 of table KP is followed by one end of double-pole switch QF2, delayed startup
The timing closing contact of time relay KT1 and the normally opened contact of intermediate relay KA1 are in parallel, it is in parallel after one end with it is bipolar
QF1 connections are switched, the other end passes through the line with the delay break contact of delay turn-off time relay KT2 and intermediate relay KA1
Circle concatenation is followed by one end of double-pole switch QF2, and the other end of double-pole switch QF2 connects with secondary line power port B.
A kind of pressure control circuit of anti-fluctuation of the present invention at work, the first manual/auto selecting switch of manual closing
QF3, presses start button SB2, and operation contactor KM obtains electric, motor operation.Start button SB2 is unclamped, operation contactor KM loses
Electricity, motor stop.
When manual/auto selecting switch QF4 is closed, pressure control circuit is in automatic running state, works as ductwork pressure
Normally, the normally opened contact of intermediate relay KA1 disconnects, and stop button SB1 is disconnected, and operation contactor KM is not opened without electricity, motor
It is dynamic.Decline in ductwork pressure moment, when electro connecting pressure gauge KP is in lower limit, start-up time delay relay KT1 is connected, circuit
In delay state, motor does not start.It is continued to decline in ductwork pressure, the timing closing of start-up time delay relay KT1 is touched
Point timing closing, the coil of intermediate relay KA1 obtain electric, the normally opened contact closure of intermediate relay KA1 and self-locking, operation contact
Device KM coils obtain electric, electric motor starting, while run indicator is lighted.The upper limit, electric contact pressure are risen in ductwork pressure moment
When table KP is in the upper limit, delay turn-off time relay KT2 connects, and circuit is in delay state, and motor does not stop immediately.In pipe
Net pressure persistently reaches the upper limit, and the delay break contact delay of delay turn-off time relay KT2 disconnects, intermediate relay KA1
Coil losing electricity, the normally opened contact of intermediate relay KA1 disconnects, and the coil losing electricity of operation contactor KM, motor stops, same to luck
Row indicator light extinguishes.
The present embodiment have the characteristics that it is simple in structure, easy to operate, be suitable for water, with the pressure such as gas control.It can root
According to the difference that ductwork pressure fluctuates, autonomous regulating time relay, it is instantaneous to avoid pipe network for the start and stop of control pressure motor
The influence of fluctuation.
Basic principle of the invention and main feature and advantages of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (1)
1. a kind of pressure control circuit of anti-fluctuation, secondary line power port A and power end including external 220V AC powers
Mouth B, it is characterised in that：The pressure control circuit further include electro connecting pressure gauge KP, intermediate relay KA1, operation contactor KM,
Electrothermal relay FR, start-up time delay relay KT1, delay turn-off time relay KT2, run indicator HD, double-pole switch
QF1 and QF2, manual/auto selecting switch QF3 and QF4, stop button SB1 and start button SB2；
The secondary line power port A after double-pole switch QF1 respectively with the upper end of manual/auto selecting switch QF3 and QF4,
The common end of electro connecting pressure gauge KP, the upper end of the timing closing contact of start-up time delay relay KT1 and intermediate relay
The upper end connection of the normally opened contact of KA1；
The manual/auto selecting switch QF3 series connection stop button SB1 and start button SB2 is followed by operation contactor KM lines
One end of circle, the normally-closed contact of the other end concatenation electrothermal relay FR of operation contactor KM coils are followed by double-pole switch QF2's
One end；
The manual/auto selecting switch QF4 concatenated with the normally opened contact of intermediate relay KA1 after with run indicator HD one
End connection, the run indicator HD are attempted by operation contactor KM both ends；
The coil of the lower limit contact concatenation start-up time delay relay KT1 of the electro connecting pressure gauge KP is followed by double-pole switch
One end of QF2；The coil of the upper limit contact concatenation delay turn-off time relay KT2 of electro connecting pressure gauge KP is followed by bipolar opening
Close one end of QF2；
The timing closing contact of the start-up time delay relay KT1 and the normally opened contact of intermediate relay KA1 are in parallel, and
One end after connection is connect with double-pole switch QF1, the other end pass through be delayed turn-off time relay KT2 delay break contact and in
Between the coil tandem of relay KA1 be followed by one end of double-pole switch QF2；
The other end of the double-pole switch QF2 connects with secondary line power port B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610696384.4A CN106159904B (en) | 2016-08-22 | 2016-08-22 | A kind of pressure control circuit of anti-fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610696384.4A CN106159904B (en) | 2016-08-22 | 2016-08-22 | A kind of pressure control circuit of anti-fluctuation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106159904A CN106159904A (en) | 2016-11-23 |
| CN106159904B true CN106159904B (en) | 2018-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610696384.4A Active CN106159904B (en) | 2016-08-22 | 2016-08-22 | A kind of pressure control circuit of anti-fluctuation |
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| CN (1) | CN106159904B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461323A (en) * | 2017-09-05 | 2017-12-12 | 安徽晋煤中能化工股份有限公司 | Gas making hydraulic oil pumping plant electric-control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2473363Y (en) * | 2000-11-08 | 2002-01-23 | 黄运辉 | Automatic control box for water pump |
| CN1587828A (en) * | 2004-08-05 | 2005-03-02 | 台州光辉自控科技有限公司 | Separate cylinder energy saving controller for boiler steam |
| CN202475327U (en) * | 2012-02-24 | 2012-10-03 | 四川省电力公司达州电业局 | Automatic alarm control device of motor |
| CN202597049U (en) * | 2012-05-25 | 2012-12-12 | 自贡大业高压容器有限责任公司 | Automatic control system of high pressure compressor |
| CN203929524U (en) * | 2014-06-05 | 2014-11-05 | 江阴市华昌不锈钢管有限公司 | Steel pipe hydrostatic testing automaton |
| CN205945027U (en) * | 2016-08-22 | 2017-02-08 | 安徽华茂纺织股份有限公司 | Anti undulant pressure control circuit |
-
2016
- 2016-08-22 CN CN201610696384.4A patent/CN106159904B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2473363Y (en) * | 2000-11-08 | 2002-01-23 | 黄运辉 | Automatic control box for water pump |
| CN1587828A (en) * | 2004-08-05 | 2005-03-02 | 台州光辉自控科技有限公司 | Separate cylinder energy saving controller for boiler steam |
| CN202475327U (en) * | 2012-02-24 | 2012-10-03 | 四川省电力公司达州电业局 | Automatic alarm control device of motor |
| CN202597049U (en) * | 2012-05-25 | 2012-12-12 | 自贡大业高压容器有限责任公司 | Automatic control system of high pressure compressor |
| CN203929524U (en) * | 2014-06-05 | 2014-11-05 | 江阴市华昌不锈钢管有限公司 | Steel pipe hydrostatic testing automaton |
| CN205945027U (en) * | 2016-08-22 | 2017-02-08 | 安徽华茂纺织股份有限公司 | Anti undulant pressure control circuit |
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| Publication number | Publication date |
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| CN106159904A (en) | 2016-11-23 |
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Effective date of registration: 20190715 Address after: 246700 Anhui Taiyang Weaving Technology Co., Ltd. Xinlou Industrial Park, Zongyang County Development Zone, Tongling City, Anhui Province Patentee after: Anhui Taiyang Weaving Technology Co., Ltd. Address before: 246001 Anhui province Anqing City Daguan District Textile Road No. 80 Patentee before: Anhui Huamao Textile Co., Ltd. |