CN202500796U - Automatic control circuit of high voltage frequency conversion cooling blower - Google Patents
Automatic control circuit of high voltage frequency conversion cooling blower Download PDFInfo
- Publication number
- CN202500796U CN202500796U CN2011205616011U CN201120561601U CN202500796U CN 202500796 U CN202500796 U CN 202500796U CN 2011205616011 U CN2011205616011 U CN 2011205616011U CN 201120561601 U CN201120561601 U CN 201120561601U CN 202500796 U CN202500796 U CN 202500796U
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- contactor
- blower
- delay relay
- delay
- branch road
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Abstract
The invention relates to an automatic control circuit of a high voltage frequency conversion cooling blower, and relates to a blower control circuit. The control of the present cooling blowers needs hand operation to start or stop, and the present cooling blower does not have the functions of delay or stop, which are unfavorable to the service life of the equipments and the cooling blowers. The automatic control circuit is characterized by comprising a contactor self-locking branch which contains a contactor, a blower time-delay branch which contains an energizing delay relay, the contactor self-locking branch and the blower time-delay branch enable parallel connection, the contactor self-locking branch is connected to a normally closed contact of the energizing delay relay in series so that the energized energizing delay relay delays to disconnect the normally closed contact of the energizing delay relay, thereby a contactor drop-outs disconnect blower is connected to the power supply. When the high voltage is charged, a delay relay is additionally installed for delaying to cut off the power supply of the contactor, the delay of the blower stops after the high voltage outage, thereby the equipment usage life can be prolonged, and the frequent operation of the cooling blower can be simultaneously avoided, the service life of the cooling blower can be largely prolonged, and the automatic control circuit has the advantages of simple structure, easy maintenance and low cost.
Description
Technical field
The utility model relates to draught fan control circuit.
Background technique
Equipment cooling during high voltage converter is used directly influences the security of operation of frequency variator self; High voltage converter is when proper functioning; Origin of heat mainly is isolating transformer, reactor, power cell, control system etc., wherein as the heat dissipation design of the heat radiation of the power device of main circuit electronic switch, power cell, and the heat radiation and the Design of ventilation of power cabinet the most important.Existing cooling blower control need manually be opened mostly/stopped, and does not also have the time-delay hold function, and is unfavorable to the working life of equipment and cooling blower.
The model utility content
The technical problem that the utility model will solve and the technical assignment of proposition are that the existing technology scheme is improved and improved, and high-voltage frequency-changing cooling blower automatic control loop are provided, to reach the purpose that the cooling blower automatic time delay stops.For this reason, the utility model is taked following technological scheme.
High-voltage frequency-changing cooling blower automatic control loop; It is characterized in that: comprise the contactor self-locking branch road of establishing contactor, the blower fan time-delay branch road of establishing energization delay relay; Described contactor self-locking branch road and blower fan time-delay branch road is parallelly connected, and the normally-closed contact of described contactor self-locking branch road series connection energization delay relay makes energization delay relay get normally-closed contact that the time-delay of electric back breaks off energization delay relay and makes being connected of contactor dead electricity disconnection blower fan and power supply.Cooling blower is by control power supply or the auxiliary winding power supply of phase-shifting transformer, and time delay relay is set up in last high-tension electricity rear fan operation; The power supply of contactor is cut off in time-delay, and high pressure outage rear fan time-delay (time is adjustable) stops, high pressure outage back frequency variator inside temperature is further reduced after; Just stop the operation of cooling blower, can prolong service life of equipment, can avoid the frequent start-stop of cooling blower simultaneously; Prolonged the working life of cooling blower greatly, simple in structure, be beneficial to maintenance; And cost is low, than superior by the scheme of temperature control cooling blower.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature.
Described contactor self-locking branch road comprises auxiliary reclay normally opened contact, energization delay relay normally-closed contact and the contactor of series connection, described auxiliary reclay normally opened contact parallel connection contactor normally opened contact; The auxiliary reclay normally opened contact gets electric adhesive when detecting high pressure and get electrical signal or converting operation signal, and when high pressure dead electricity or converting operation stopped, auxiliary reclay normally opened contact dead electricity was broken off.
Described blower fan time-delay branch road comprises auxiliary reclay normally-closed contact, contactor normally opened contact and the energization delay relay of series connection.
Beneficial effect: after high pressure outage back frequency variator inside temperature further reduces, just stop the operation of cooling blower, can prolong service life of equipment; Can avoid simultaneously the frequent start-stop of cooling blower; Prolonged the working life of cooling blower greatly, simple in structure, be beneficial to maintenance; And cost is low, than superior by the scheme of temperature control cooling blower.
Description of drawings
Fig. 1 is the utility model main circuit structure schematic representation.
Fig. 2 is the utility model control circuit structural representation.
Among the figure: KM-contactor, KT-energization delay relay, KA-auxiliary reclay.
Embodiment
Below in conjunction with Figure of description the technological scheme of the utility model is done further detailed description.
As shown in Figure 1, in the main circuit of blower fan, link to each other with power supply behind the normally opened contact of blower fan series contactor KM, the circuit breaker Q F.After circuit breaker Q F closed, contactor was because of existing self-holding circuit, and the normally-closed contact of energization delay relay KT does not break off, and contactor KM keeps attracting state, thereby series contactor KM normally opened contact is closed, made blower fan ability continuous firing.With single-phase blower fan is example; Specify its control loop; As shown in Figure 2; The utility model comprises the contactor self-locking branch road of establishing contactor KM, the blower fan time-delay branch road of establishing energization delay relay KT; Described contactor self-locking branch road and blower fan time-delay branch road is parallelly connected, and the normally-closed contact of described contactor self-locking branch road series connection energization delay relay KT makes energization delay relay KT get normally-closed contact that the time-delay of electric back breaks off energization delay relay KT and makes contactor KM dead electricity being connected with disconnection blower fan and power supply.Described contactor self-locking branch road comprises auxiliary reclay KA normally opened contact, energization delay relay KT normally-closed contact and the contactor KM of series connection, described auxiliary reclay KA normally opened contact parallel connection contactor KM normally opened contact; Auxiliary reclay KA normally opened contact gets electric adhesive when detecting high pressure and get electrical signal or converting operation signal, and when high pressure dead electricity or converting operation stopped, auxiliary reclay KA normally opened contact dead electricity was broken off.Described blower fan time-delay branch road comprises auxiliary reclay KA normally-closed contact, contactor KM normally opened contact and the energization delay relay KT of series connection.
Working procedure:
1, get electrical signal or converting operation signal when detecting high pressure, auxiliary reclay KA gets electric adhesive, and auxiliary reclay KA normally opened contact is closed, thereby contactor KM gets electric adhesive, fan operation;
2, when high pressure dead electricity or converting operation stop, auxiliary reclay KA relaying dead electricity, auxiliary reclay KA normally-closed contact is normally closed; Energization delay relay KT gets; The normally-closed contact time-delay (time is adjustable) of energization delay relay KT is broken off, thus contactor KM dead electricity, and blower fan is out of service.
Above Fig. 1, the high-voltage frequency-changing cooling blower automatic control loop shown in 2 are the specific embodiments of the utility model; The utility model substantive distinguishing features and progress have been embodied; Can be according to the use needs of reality; Under the enlightenment of the utility model, it is carried out the equivalent modifications of aspects such as shape, structure, all at the row of the protection domain of this programme.
Claims (3)
1. high-voltage frequency-changing cooling blower automatic control loop; It is characterized in that: comprise the contactor self-locking branch road of establishing contactor (KM), the blower fan time-delay branch road of establishing energization delay relay (KT); Described contactor self-locking branch road and blower fan time-delay branch road is parallelly connected, the normally-closed contact of described contactor self-locking branch road series connection energization delay relay (KT) make energization delay relay (KT) the time-delay normally-closed contact that breaks off energization delay relay (KT) in electric back makes contactor (KM) dead electricity being connected with disconnection blower fan and power supply.
2. high-voltage frequency-changing cooling blower automatic control loop according to claim 1; It is characterized in that: described contactor self-locking branch road comprises auxiliary reclay (KA) normally opened contact, energization delay relay (KT) normally-closed contact and the contactor (KM) of series connection, described auxiliary reclay (KA) normally opened contact parallel connection contactor (KM) normally opened contact; Auxiliary reclay (KA) normally opened contact gets electric adhesive when detecting high pressure and get electrical signal or converting operation signal, and when high pressure dead electricity or converting operation stopped, auxiliary reclay (KA) normally opened contact dead electricity was broken off.
3. high-voltage frequency-changing cooling blower automatic control loop according to claim 2 is characterized in that: described blower fan time-delay branch road comprises auxiliary reclay (KA) normally-closed contact, contactor (KM) normally opened contact and the energization delay relay (KT) of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205616011U CN202500796U (en) | 2011-12-29 | 2011-12-29 | Automatic control circuit of high voltage frequency conversion cooling blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205616011U CN202500796U (en) | 2011-12-29 | 2011-12-29 | Automatic control circuit of high voltage frequency conversion cooling blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500796U true CN202500796U (en) | 2012-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205616011U Expired - Fee Related CN202500796U (en) | 2011-12-29 | 2011-12-29 | Automatic control circuit of high voltage frequency conversion cooling blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500796U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137880A (en) * | 2015-09-10 | 2015-12-09 | 王名杰 | Intelligent control switch |
| CN108105967A (en) * | 2017-12-25 | 2018-06-01 | 广东智科电子股份有限公司 | A kind of frequency conversion air-cooler control system and control circuit |
| CN108571461A (en) * | 2018-05-31 | 2018-09-25 | 河南森源电气股份有限公司 | Fan controller, blower fan system and frequency convertor system |
| CN110170130A (en) * | 2019-06-21 | 2019-08-27 | 徐工集团工程机械有限公司 | Fire fighting truck and cooling method is carried out to the power takeoff of fire fighting truck |
| CN111025069A (en) * | 2019-12-30 | 2020-04-17 | 深圳供电局有限公司 | Method for testing cold control power-off time fixed value of transformer cooler |
| CN112350584A (en) * | 2020-09-17 | 2021-02-09 | 珠海格力电器股份有限公司 | Heat dissipation control device and method for power device and electrical equipment |
| CN116085294A (en) * | 2023-04-10 | 2023-05-09 | 江西清华泰豪三波电机有限公司 | Control device and power supply system |
-
2011
- 2011-12-29 CN CN2011205616011U patent/CN202500796U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137880A (en) * | 2015-09-10 | 2015-12-09 | 王名杰 | Intelligent control switch |
| CN108105967A (en) * | 2017-12-25 | 2018-06-01 | 广东智科电子股份有限公司 | A kind of frequency conversion air-cooler control system and control circuit |
| CN108105967B (en) * | 2017-12-25 | 2024-03-26 | 广东智科电子股份有限公司 | Variable-frequency air cooler control system and control circuit |
| CN108571461A (en) * | 2018-05-31 | 2018-09-25 | 河南森源电气股份有限公司 | Fan controller, blower fan system and frequency convertor system |
| CN108571461B (en) * | 2018-05-31 | 2023-11-21 | 河南森源电气股份有限公司 | Fan control device, fan system and frequency converter system |
| CN110170130A (en) * | 2019-06-21 | 2019-08-27 | 徐工集团工程机械有限公司 | Fire fighting truck and cooling method is carried out to the power takeoff of fire fighting truck |
| CN111025069A (en) * | 2019-12-30 | 2020-04-17 | 深圳供电局有限公司 | Method for testing cold control power-off time fixed value of transformer cooler |
| CN111025069B (en) * | 2019-12-30 | 2022-08-16 | 深圳供电局有限公司 | Method for testing constant value of cold control power-off time of transformer cooler |
| CN112350584A (en) * | 2020-09-17 | 2021-02-09 | 珠海格力电器股份有限公司 | Heat dissipation control device and method for power device and electrical equipment |
| CN112350584B (en) * | 2020-09-17 | 2022-02-01 | 珠海格力电器股份有限公司 | Heat dissipation control device and method for power device and electrical equipment |
| CN116085294A (en) * | 2023-04-10 | 2023-05-09 | 江西清华泰豪三波电机有限公司 | Control device and power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20131229 |