CN202172261U - A voltage sag preventing device of a high capacity motor or a plurality of motors - Google Patents
A voltage sag preventing device of a high capacity motor or a plurality of motors Download PDFInfo
- Publication number
- CN202172261U CN202172261U CN2011202641558U CN201120264155U CN202172261U CN 202172261 U CN202172261 U CN 202172261U CN 2011202641558 U CN2011202641558 U CN 2011202641558U CN 201120264155 U CN201120264155 U CN 201120264155U CN 202172261 U CN202172261 U CN 202172261U
- Authority
- CN
- China
- Prior art keywords
- time relay
- contactor
- sucking coil
- time
- contact
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The utility model discloses a voltage sag preventing device of a high capacity motor or a plurality of motors, comprising a stop button SB1, a starting button SB2, a contactor Km, a first time relay KT1, a second time relay KT2, a live wire L and a zero line N, wherein the live wire L and the zero line N are used for accessing alternating current, a normally open time-delay open contact of the KT1 is serially connected with a normally open auxiliary contact of the KM and then is parallelly connected with the SB2 and a normally open time-delay closed contact of the KT2, a sucking coil of the KT1 is parallely connected with a sucking coil of the KT2, serially connected with a normally open auxiliary contact of the KM and then is parallelly connected with a sucking coil of the KM, a first connecting end of the SB1 is connected with the L, and a second connecting end of the SB1 is connected with the N via the SB2 and the sucking coil of the KM in order. The voltage sag preventing device is high in reliability, low in material cost, good in economic benefit and good in safety.
Description
Technical field
The utility model relates to motor, particularly, relates to the anti-rolling electric installation of a kind of large-size machine or multiple electric motors.
Background technology
Motor is a chemical industry quantity-produced visual plant, and each voltage fluctuation (rolling) will directly influence the normal operation of low voltage motor and the continuous production of chemical plant installations.
At present, what the chemical plant installations major part was used is low voltage motor, and the power control part branch " contactor " of low voltage motor is 220V or 380V control voltage, and when system's electrical network failed because or flashover discharge, line voltage will reduce moment; When line voltage was lower than 70%, the suction-combining force of motor contactor will cause the motor contactor to discharge deenergization, thereby make motor out of service less than the tension force of spring, and influence is produced, and a large amount of production materials are scrapped, and has a strong impact on economic benefit.
In realizing the process of the utility model, the inventor finds to exist at least in the prior art that running reliability of motor is low, influence is produced, be prone to make production material to scrap and have a strong impact on defective such as economic benefit.
Summary of the invention
The purpose of the utility model is, to the problems referred to above, proposes the anti-rolling electric installation of a kind of large-size machine or multiple electric motors, with the advantage that realizes that running reliability of motor is high, cost of material is low, good in economic efficiency and fail safe is good.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts is: the anti-rolling electric installation of a kind of large-size machine or multiple electric motors; The live wire L and the zero line N that comprise stop button SB1, start button SB2, contactor KM, very first time relay K T1, second time relay KT2 and be used for the incoming transport electricity; Wherein: said very first time relay K T1 often open often the opening auxiliary contact and connect of Time Delay Opening contact and contactor KM after, with the start button SB2 and second time relay KT2 often to open the timing closing contact parallelly connected; The sucking coil of said very first time relay K T1 is connected with the auxiliary contact of often opening of contactor KM with after the sucking coil of second time relay KT2 is parallelly connected, and is parallelly connected with the sucking coil of contactor KM more afterwards; First link of the said stop button SB1 line L that starts to exchange fire; Second link of stop button SB1, connecting to neutral line N behind the sucking coil of start button SB2 and contactor KM successively.
The anti-rolling electric installation of the large-size machine of each embodiment of the utility model or multiple electric motors; Because the live wire L and the zero line N that comprise stop button SB1, start button SB2, contactor KM, very first time relay K T1, second time relay KT2 and be used for the incoming transport electricity; Very first time relay K T1 often open often the opening auxiliary contact and connect of Time Delay Opening contact and contactor KM after, with the start button SB2 and second time relay KT2 often to open the timing closing contact parallelly connected; The sucking coil of very first time relay K T1 is connected with the auxiliary contact of often opening of contactor KM with after the sucking coil of second time relay KT2 is parallelly connected, and is parallelly connected with the sucking coil of contactor KM more afterwards; First link of the stop button SB1 line L that starts to exchange fire; Second link of stop button SB1, connecting to neutral line N behind the sucking coil of start button SB2 and contactor KM successively; Can be when system's voltage ripple of power network causes motor to be shut down; Can in the shortest time, normally move by automatic restorer; Thereby the minimizing personnel go to and on-the-spot restart by platform in a large number, avoid bigger economic loss, also avoid misoperation and potential safety hazard simultaneously; Running reliability of motor is low in the prior art, influence is produced, be prone to make production material to scrap and the defective that has a strong impact on economic benefit, with the advantage that realizes that running reliability of motor is high, cost of material is low, good in economic efficiency and fail safe is good thereby can overcome.
Further feature of the utility model and advantage will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through implementing the utility model.The purpose of the utility model can realize through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtain with other advantages.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of specification, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the electrical principle sketch map according to the anti-rolling electric installation of the utility model large-size machine or multiple electric motors.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
According to the utility model embodiment, the anti-rolling electric installation of a kind of large-size machine or multiple electric motors is provided.As shown in Figure 1; Live wire L and zero line N that present embodiment comprises stop button SB1, start button SB2, contactor KM, very first time relay K T1, second time relay KT2 and is used for the incoming transport electricity; Wherein: very first time relay K T1 often open often the opening auxiliary contact and connect of Time Delay Opening contact and contactor KM after, with the start button SB2 and second time relay KT2 often to open the timing closing contact parallelly connected; The sucking coil of very first time relay K T1 is connected with the auxiliary contact of often opening of contactor KM with after the sucking coil of second time relay KT2 is parallelly connected, and is parallelly connected with the sucking coil of contactor KM more afterwards; First link of the stop button SB1 line L that starts to exchange fire; Second link of stop button SB1, connecting to neutral line N behind the sucking coil of start button SB2 and contactor KM successively.
In the above-described embodiments, in motor control loop, increase by two time relays (being the very first time relay K T1 and second time relay KT2), the electric mode of anti-rolling is self-starting in batches.Particularly: when fluctuation takes place electrical network; The coil losing electricity of contactor, the auxiliary contact of contactor (KM) is opened, and the auxiliary contact of time relay KT1 (contact of outage Time Delay Opening) time-delay is broken off; During power system restoration; Through auxiliary contact (contact of outage Time Delay Opening) relay K T1 turn-on time of time relay KT1 and the coil of KT2, the KT2 auxiliary contact gets electric time-delay back and connects contactor KM coil, realizes the self-starting of motor.
In the above-described embodiments; Increase by two time relays (being the very first time relay K T1 and second time relay KT2) at motor control loop; When motor normally moves, the time relay always electric operation, when system's voltage ripple of power network causes the motor contactor to discharge; Be communicated with in finite time through time relay dead electricity timing closing contact and on-the-spot start the knob loop, thus make the motor contactor again electric operation; When system's voltage ripple of power network causes motor to be shut down, can be in the shortest time automatically restorer normally move, thereby the minimizing personnel go to and on-the-spotly restart by platform in a large number, avoid bigger economic loss, also avoid misoperation and potential safety hazard simultaneously.
During practical implementation; For big capacity or multiple electric motors; Can in motor control loop, the explanation according to schematic diagram 1 be installed by two time relays (being the very first time relay K T1 and second time relay KT2); And, prevent that large-size machine from starting simultaneously according to process condition setting successively start-up time, because of a large amount of impulse currents are prone to cause inlet wire master switch tripping operation influence production.
Before the large-size machine of employing the foregoing description or the anti-rolling electric installation of multiple electric motors; Each electrical network rolling electricity all causes a large amount of motors to be stopped transport; Have a strong impact on production, a large amount of attendants and operating personnel run busy, recover to send electricity and restart motor; Have a large amount of safety and misoperation hidden danger, and loss is serious; Behind the large-size machine of employing the foregoing description or the anti-rolling electric installation of multiple electric motors, check just during electrical network rolling electricity that whether motor normally moves, and influences less to production.
In sum; The anti-rolling electric installation of the large-size machine of each embodiment of the utility model or multiple electric motors; Because the live wire L and the zero line N that comprise stop button SB1, start button SB2, contactor KM, very first time relay K T1, second time relay KT2 and be used for the incoming transport electricity; Very first time relay K T1 often open often the opening auxiliary contact and connect of Time Delay Opening contact and contactor KM after, with the start button SB2 and second time relay KT2 often to open the timing closing contact parallelly connected; The sucking coil of very first time relay K T1 is connected with the auxiliary contact of often opening of contactor KM with after the sucking coil of second time relay KT2 is parallelly connected, and is parallelly connected with the sucking coil of contactor KM more afterwards; First link of the stop button SB1 line L that starts to exchange fire; Second link of stop button SB1, connecting to neutral line N behind the sucking coil of start button SB2 and contactor KM successively; Can be when system's voltage ripple of power network causes motor to be shut down; Can in the shortest time, normally move by automatic restorer; Thereby the minimizing personnel go to and on-the-spot restart by platform in a large number, avoid bigger economic loss, also avoid misoperation and potential safety hazard simultaneously; Running reliability of motor is low in the prior art, influence is produced, be prone to make production material to scrap and the defective that has a strong impact on economic benefit, with the advantage that realizes that running reliability of motor is high, cost of material is low, good in economic efficiency and fail safe is good thereby can overcome.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (1)
1. the anti-rolling electric installation of large-size machine or multiple electric motors; It is characterized in that; The live wire L and the zero line N that comprise stop button SB1, start button SB2, contactor KM, very first time relay K T1, second time relay KT2 and be used for the incoming transport electricity, wherein:
Said very first time relay K T1 often open often the opening auxiliary contact and connect of Time Delay Opening contact and contactor KM after, with the start button SB2 and second time relay KT2 often to open the timing closing contact parallelly connected;
The sucking coil of said very first time relay K T1 is connected with the auxiliary contact of often opening of contactor KM with after the sucking coil of second time relay KT2 is parallelly connected, and is parallelly connected with the sucking coil of contactor KM more afterwards;
First link of the said stop button SB1 line L that starts to exchange fire; Second link of stop button SB1, connecting to neutral line N behind the sucking coil of start button SB2 and contactor KM successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202641558U CN202172261U (en) | 2011-07-22 | 2011-07-22 | A voltage sag preventing device of a high capacity motor or a plurality of motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202641558U CN202172261U (en) | 2011-07-22 | 2011-07-22 | A voltage sag preventing device of a high capacity motor or a plurality of motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202172261U true CN202172261U (en) | 2012-03-21 |
Family
ID=45830447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202641558U Expired - Lifetime CN202172261U (en) | 2011-07-22 | 2011-07-22 | A voltage sag preventing device of a high capacity motor or a plurality of motors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202172261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154628A (en) * | 2013-05-16 | 2014-11-19 | 国家电网公司 | Device for automatically starting air conditioner |
-
2011
- 2011-07-22 CN CN2011202641558U patent/CN202172261U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154628A (en) * | 2013-05-16 | 2014-11-19 | 国家电网公司 | Device for automatically starting air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101951190B (en) | Photovoltaic module capable of being electrically isolated | |
| CN103022994B (en) | Method for achieving fault isolation and recovery of power distribution network with permeability distribution type power supply | |
| CN106533148B (en) | Photovoltaic DC-to-AC converter with sudden-stop function and the emergency stop method for it | |
| CN101944871B (en) | Method for restarting electromotor after power failure | |
| CN202512194U (en) | Sound and light alarm of circuit break | |
| CN201733267U (en) | Power reset self-starting device for asynchronous motor | |
| CN202172261U (en) | A voltage sag preventing device of a high capacity motor or a plurality of motors | |
| CN202190060U (en) | Anti-electric-dazzling device for low-capacity motor or single motor | |
| CN219697294U (en) | Back-to-back working condition magnetic switch opening circuit of pumping and storage unit | |
| CN201160223Y (en) | Multi-ring website system | |
| CN202190059U (en) | Anti-interference electricity device of multiple high capacity motors | |
| CN102684158A (en) | Overheat delay protection device for motor | |
| CN203014354U (en) | Circuit for controlling auxiliary device of large units | |
| CN110021486A (en) | A kind of no-voltage trip auto recloser | |
| CN202840676U (en) | Low-voltage double-power-supply automatic switching device | |
| CN202798126U (en) | Automatic switching system for uninterrupted power supply of PLC (programmable logic controller) | |
| CN202679073U (en) | HP-9000 type switching station fault processing system | |
| CN203691293U (en) | Mining explosion-proof and intrinsically-safe dual-contactor low-voltage AC soft starter | |
| CN204481719U (en) | A kind of power plant meets an urgent need the double parallel device of direct current pump start device | |
| CN204144905U (en) | Limit switch bypass in shuttle device | |
| CN202084985U (en) | Self-startup power supply apparatus | |
| CN203503547U (en) | 10kV transformer substation vacuum circuit breaker closing control circuit | |
| CN218549791U (en) | Roots blower motor control loop in optimized unit electric bag dust remover | |
| CN202405853U (en) | 110-KV double-circuit parallel running line reclosing input line | |
| CN206259268U (en) | A kind of energy storage control loop of follow-on hydraulic spring grease cup breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181008 Address after: 833699 Nanhai Road, Dushanzi District, Karamay, the Xinjiang Uygur Autonomous Region 15 Patentee after: Karamay Tianli Henghua Petrochemical Co. Ltd. Address before: 834000 Nanhai Road, Dushanzi District, Karamay, the Xinjiang Uygur Autonomous Region 8 Patentee before: Xinjiang Dushanzi Tianli Industrial Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |