CN204928084U - Prevention grid fluctuation system - Google Patents
Prevention grid fluctuation system Download PDFInfo
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- CN204928084U CN204928084U CN201520667982.XU CN201520667982U CN204928084U CN 204928084 U CN204928084 U CN 204928084U CN 201520667982 U CN201520667982 U CN 201520667982U CN 204928084 U CN204928084 U CN 204928084U
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Abstract
The utility model relates to a mains supply technical field, concretely relates to prevention grid fluctuation system, major loop power include first live wire L1 and zero line N, insert auxiliary relay KA1 and KA2's coil between first live wire L1 and the zero line N, still be equipped with circuit breaker QF2 on first live wire L1 and the zero line N, the UPS power includes second live wire L2 and zero line N, inserts parallelly connected each other the first loop and second return circuit between second live wire L2 and the zero line N, and ac contactor KM's contact sets up between the control circuit and UPS power of consumer, the utility model discloses the technological transformation is directed against is that equipment such as the chain circulating water pump of technology and vacuum pump are participated in to the chemical plant installations, changes equipment coordination motor control return circuit power into UPS mains operated, and the equipment such as ac contactor, relay that appear controlgear when undulant at the electric wire netting can not the tripping, and when the electric wire netting recovered the power supply in the short time, equipment can carry out restart, the influence of reduction to producing through motion inertia.
Description
Technical field
The utility model relates to mains supply technical field, is specifically related to a kind of prevention power network fluctuation system.
Background technology
Power network fluctuation is generally chance failure, and the duration is shorter, but it can cause factory power supply system power failure in various degree, and impact is normally produced, and brings serious loss to factory.10KV high-pressure system is because being provided with low-voltage delay tripping, the general time that can escape power network fluctuation, can not impact, for the system of 380/220V, the impact by power network fluctuation is general larger, and power network fluctuation often causes voltage to reduce, when voltage is reduced to below 85% rated voltage, contactor coil in 380/220V low-pressure system will return power-off, causes motor to stop, and causes the parking of process units further.
In addition, when power network fluctuation accident occurs, circulating water pump is shut down as can not be unlatching in time partial reaction still temperature of charge, pressure made to raise, and produces material splash, has very large danger.If vacuum pump can not be opened in time, air lift operation vacuum degree will be made to decline, again opening can be more loaded down with trivial details.Part circulating water pump, general employing 200KW low-pressure high-power soft initiator, as wave time is long; circulating water pump is shut down; the resistance of start can be produced even reverse when recirculated water refluxes, if at this moment circulating water pump carries out step-down and restarts, certain risk can be had to this equipment and power supply unit.
Utility model content
In order to the deficiency in solving the problems of the technologies described above, the purpose of this utility model is: providing a kind of prevention power network fluctuation system, can reducing power network fluctuation to producing the impact brought.
The technical scheme that the utility model adopts for its technical problem of solution is:
Described prevention power network fluctuation system, comprise ups power, main circuit power, power consumption equipment, time relay KT, A.C. contactor KM, circuit breaker Q F1, auxiliary relay KA1 and KA2, main circuit power comprises the first live wire L1 and zero line N, access the coil of auxiliary relay KA1 and KA2 between first live wire L1 and zero line N, described first live wire L1 and zero line N is also provided with circuit breaker Q F2; Ups power comprises the second live wire L2 and zero line N, the first loop parallel with one another and second servo loop is accessed between second live wire L2 and zero line N, first loop is the loop formed after the coil of time relay KT and the contact series of auxiliary relay KA1 and KA2, and second servo loop is the loop formed after the coil of A.C. contactor KM is connected with the contact of time relay KT, the auxiliary contact of circuit breaker Q F1; The contact of A.C. contactor KM is arranged between the control loop of power consumption equipment and ups power.
Further preferably, power consumption equipment comprises circulating water pump P902A, P902B, P902E and vacuum pump P916A, P916B.
Further preferably, fuse FU1 is provided with between the common port of the first loop and second servo loop and the second live wire L2.
Further preferably, the electric wire of power consumption equipment is provided with fuse FU and circuit breaker Q F.
Further preferably, the electric wire of ups power is provided with circuit breaker Q F3.
Compared with prior art, the utility model has following beneficial effect:
The utility model technological transformation for be that chemical plant installations participates in the equipment such as the circulating water pump of process concatenation and vacuum pump, change coordinative composition of equipments Motor Control ring current into ups power to power, occur that the equipment such as A.C. contactor, relay of fluctuation time control control equipment can not tripping at electrical network, when electrical network restores electricity at short notice, equipment can be restarted by motional inertia, reduces the impact on producing; In addition, the capacity residual value that native system make use of ups power carries out the power supply of short time to the contactor of key equipment, ensure that circuit safety by Redundancy Design, tests and overcomes the relevant difficult problem of soft initiator Circuit Retrofit.
Accompanying drawing explanation
Fig. 1 the utility model electric control theory figure.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1, prevention power network fluctuation system described in the utility model, comprise ups power, main circuit power, power consumption equipment, time relay KT, A.C. contactor KM, circuit breaker Q F1, auxiliary relay KA1 and KA2, main circuit power comprises the first live wire L1 and zero line N, access the coil of auxiliary relay KA1 and KA2 between first live wire L1 and zero line N, described first live wire L1 and zero line N is also provided with circuit breaker Q F2; Ups power comprises the second live wire L2 and zero line N, the first loop parallel with one another and second servo loop is accessed between second live wire L2 and zero line N, first loop is the loop formed after the coil of time relay KT and the contact series of auxiliary relay KA1 and KA2, and second servo loop is the loop formed after the coil of A.C. contactor KM is connected with the contact of time relay KT, the auxiliary contact of circuit breaker Q F1; The contact of A.C. contactor KM is arranged between the control loop of power consumption equipment and ups power.
Wherein, power consumption equipment comprises circulating water pump P902A, P902B, P902E and vacuum pump P916A, P916B; Fuse FU1 is provided with between the common port of the first loop and second servo loop and the second live wire L2; The electric wire of power consumption equipment is provided with fuse FU and circuit breaker Q F; The electric wire of ups power is provided with circuit breaker Q F3.
Principle of the present utility model:
We transform key equipments such as fine chemistry industry device circulating water pump P902A, P902B, P902E and vacuum pump P916A, P916B, the control loop power supply of power consumption equipment takes from ups power, controlled by A.C. contactor KM, main circuit power is supplied by civil power, the power supply of auxiliary relay KA1 and KA2 takes from main circuit power, when main circuit power fluctuation overtime relay K T setting-up time, A.C. contactor KM disconnects, the control power supply of power consumption equipment disconnects, and power consumption equipment does not carry out self-starting.
Native system mainly avoids power network fluctuation overlong time, equipment inertia weakens, and causes multiple devices to start simultaneously and impacts electrical network, seals in civil power lead-in circuit breaker QF1 auxiliary contact, in the non-"on" position of circuit breaker or tripping state, the A.C. contactor KM in second servo loop can not adhesive; In addition, auxiliary relay KA1 and KA2 adopts Redundancy Design, and when auxiliary relay damages, this circuit can not misoperation, makes this circuit safer, reasonable.
Claims (5)
1. a prevention power network fluctuation system, comprise ups power, main circuit power, power consumption equipment, time relay KT, A.C. contactor KM, circuit breaker Q F1, auxiliary relay KA1 and KA2, it is characterized in that, main circuit power comprises the first live wire L1 and zero line N, access the coil of auxiliary relay KA1 and KA2 between first live wire L1 and zero line N, described first live wire L1 and zero line N is also provided with circuit breaker Q F2; Ups power comprises the second live wire L2 and zero line N, the first loop parallel with one another and second servo loop is accessed between second live wire L2 and zero line N, first loop is the loop formed after the coil of time relay KT and the contact series of auxiliary relay KA1 and KA2, and second servo loop is the loop formed after the coil of A.C. contactor KM is connected with the contact of time relay KT, the auxiliary contact of circuit breaker Q F1; The contact of A.C. contactor KM is arranged between the control loop of power consumption equipment and ups power.
2. prevention power network fluctuation system according to claim 1, is characterized in that, power consumption equipment comprises circulating water pump P902A, P902B, P902E and vacuum pump P916A, P916B.
3. prevention power network fluctuation system according to claim 1, is characterized in that, is provided with fuse FU1 between the common port of the first loop and second servo loop and the second live wire L2.
4. prevention power network fluctuation system according to claim 1 and 2, is characterized in that, the electric wire of power consumption equipment is provided with fuse FU and circuit breaker Q F.
5. prevention power network fluctuation system according to claim 1, it is characterized in that, the electric wire of ups power is provided with circuit breaker Q F3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667982.XU CN204928084U (en) | 2015-08-31 | 2015-08-31 | Prevention grid fluctuation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667982.XU CN204928084U (en) | 2015-08-31 | 2015-08-31 | Prevention grid fluctuation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204928084U true CN204928084U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520667982.XU Active CN204928084U (en) | 2015-08-31 | 2015-08-31 | Prevention grid fluctuation system |
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| CN (1) | CN204928084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108574283A (en) * | 2018-07-02 | 2018-09-25 | 合肥天鹅制冷科技有限公司 | A kind of device that can make to run under single-phase compressor mains fluctuations |
-
2015
- 2015-08-31 CN CN201520667982.XU patent/CN204928084U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108574283A (en) * | 2018-07-02 | 2018-09-25 | 合肥天鹅制冷科技有限公司 | A kind of device that can make to run under single-phase compressor mains fluctuations |
| CN108574283B (en) * | 2018-07-02 | 2024-01-12 | 合肥天鹅制冷科技有限公司 | Device capable of operating single-phase compressor under power voltage fluctuation |
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