CN204179936U - Anti-circuit temperature excessively under a kind of explosion-proof high-pressure frequency converter manual control mode - Google Patents
Anti-circuit temperature excessively under a kind of explosion-proof high-pressure frequency converter manual control mode Download PDFInfo
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- CN204179936U CN204179936U CN201420368127.4U CN201420368127U CN204179936U CN 204179936 U CN204179936 U CN 204179936U CN 201420368127 U CN201420368127 U CN 201420368127U CN 204179936 U CN204179936 U CN 204179936U
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- blower fan
- frequency converter
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- normally opened
- opened contact
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- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses the anti-circuit temperature excessively under a kind of explosion-proof high-pressure frequency converter manual control mode, this circuit makes explosion-proof high-pressure frequency converter that frequency converter temperature can be prevented in the manual operating mode too high.It by controlling power supply (1), automatic/hand knob (2), blower fan manually select knob (3), frequency converter 1# control signal contact (4), frequency converter 2# control signal contact (5), 1# blower fan contactor coil (6), 1# blower fan contactor main contacts (7), 2# blower fan contactor coil (8), 2# blower fan contactor main contacts (9) to form.This circuit manually/automatically mixed-control mode, makes the explosion-proof high-pressure frequency converter cooling blower under manual operation mode drop into all fans when high temperature and cool, thus it is overheated to effectively prevent explosion-proof high-pressure frequency converter.It is high that this circuit has reliability, controls simple, be easy to the features such as assembling.
Description
Technical field
The utility model relates to the anti-circuit temperature excessively under a kind of mine anti-explosion high voltage converter manual control mode, for the heat radiation of explosion-proof high-pressure frequency converter, belongs to converter technology field.
Background technology
Explosion-proof high-pressure frequency converter needs to be switched to manual operation mode sometimes.In such a mode, the cooling blower of frequency converter is also switched to manual mode, and frequency converter no longer selects according to variations in temperature the quantity starting cooling blower automatically.Once the cooling blower manually selected can not meet cooling requirements, and operating personnel do not note the change of temperature, are easy to cause frequency converter excess temperature to shut down.
Summary of the invention
For solving the problem, the utility model provides the anti-circuit temperature excessively under a kind of mine anti-explosion high voltage converter manual control mode.This circuit makes explosion-proof high-pressure frequency converter that frequency converter temperature can be prevented in the manual operating mode too high.
The technical solution of the utility model is: this is anti-cross circuit temperature by controlling power supply (1), automatic/hand knob (2), blower fan manually select knob (3), frequency converter 1# control signal contact (4), frequency converter 2# control signal contact (5), 1# blower fan contactor coil (6), 1# blower fan contactor main contacts (7), 2# blower fan contactor coil (8), 2# blower fan contactor main contacts (9) to form.
Described control power supply (1) is made up of a single-phase transformer; Automatic/hand knob (2) is two grades of knobs, comprises 2 normally opened contacts: the first normally opened contact (21), the second normally opened contact (22); Blower fan manually selects knob (3) to be also two grades of knobs, comprises 2 normally opened contacts: the 3rd normally opened contact (31), the 4th normally opened contact (32); Frequency converter 1# control signal contact (4) and frequency converter 2# control signal contact (5) are normally opened contact; 1# blower fan contactor main contacts (7) is made up of the first main contacts (71), the second main contacts (72), the 3rd main contacts (73) three groups of main contactss; 2# blower fan contactor main contacts (9) is made up of the 4th main contacts (91), the 5th main contacts (92), the 6th main contacts (93) three groups of main contactss; Control in power supply (1), the former limit of single-phase transformer is connected with external ac power source; One end of single-phase transformer secondary is connected with one end of first normally opened contact (21) of automatic/hand knob (2), the second normally opened contact (22); The other end of single-phase transformer secondary is connected with 1# blower fan contactor coil (6) one end with 2# blower fan contactor coil (8); The other end and the blower fan of the first normally opened contact (21) in automatic/hand knob (2) manually select the 3rd normally opened contact (31) in knob (3) to be connected with one end of the 4th normally opened contact (32); The other end of the second normally opened contact (22) in automatic/hand knob (2) is connected with one end with frequency converter 2# control signal contact (5), frequency converter 1# control signal contact (4); Blower fan manually selects the other end of the 3rd normally opened contact (31) in knob (3) to be connected with the other end of 1# blower fan contactor coil (6) with the other end of frequency converter 1# control signal contact (4); Blower fan manually selects the other end of the 4th normally opened contact (32) in knob (3) to be connected with the other end of 2# blower fan contactor coil (8) with the other end of frequency converter 2# control signal contact (5); First main contacts (71) of 1# blower fan contactor main contacts (7), one end of the second main contacts (72) and the 3rd main contacts (73) three groups of main contactss are connected with the three-phase of the fan power in peripheral relevant device respectively, and the other end is connected with the three-phase input end of the 1# blower motor in peripheral relevant device respectively; 4th main contacts (91) of 2# blower fan contactor main contacts (9), one end of the 5th main contacts (92) and the 6th main contacts (93) three groups of main contactss are connected with the three-phase of the fan power in peripheral relevant device respectively, and the other end is connected with the three-phase input end of the 2# blower motor in peripheral relevant device respectively.
This circuit manually/automatically mixed-control mode, make the explosion-proof high-pressure frequency converter cooling blower under manual operation mode drop into all fans when high temperature and cool, thus effectively prevent explosion-proof high-pressure frequency converter overheated.It is high that this circuit has reliability, controls simple, be easy to the features such as assembling.
Accompanying drawing explanation
Fig. 1 is the utility model composition frame chart.
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
The utility model by controlling power supply (1), automatic/hand knob (2), blower fan manually select knob (3), frequency converter 1# control signal contact (4), frequency converter 2# control signal contact (5), 1# blower fan contactor coil (6), 1# blower fan contactor main contacts (7), 2# blower fan contactor coil (8), 2# blower fan contactor main contacts (9) to form.
Control power supply (1) to be made up of a single-phase transformer; Automatic/hand knob (2) is two grades of knobs, comprises 2 normally opened contacts: the first normally opened contact (21), the second normally opened contact (22); Blower fan manually selects knob (3) to be also two grades of knobs, comprises 2 normally opened contacts: the 3rd normally opened contact (31), the 4th normally opened contact (32); Frequency converter 1# control signal contact (4) and frequency converter 2# control signal contact (5) are normally opened contact; 1# blower fan contactor main contacts (7) is made up of the first main contacts (71), the second main contacts (72), the 3rd main contacts (73) three groups of main contactss; 2# blower fan contactor main contacts (9) is made up of the 4th main contacts (91), the 5th main contacts (92), the 6th main contacts (93) three groups of main contactss.
Control in power supply (1), the former limit of single-phase transformer is connected with external ac power source; One end of single-phase transformer secondary is connected with one end of first normally opened contact (21) of automatic/hand knob (2), the second normally opened contact (22); The other end of single-phase transformer secondary is connected with 1# blower fan contactor coil (6) one end with 2# blower fan contactor coil (8).
The other end and the blower fan of the first normally opened contact (21) in automatic/hand knob (2) manually select the 3rd normally opened contact (31) in knob (3) to be connected with one end of the 4th normally opened contact (32); The other end of the second normally opened contact (22) in automatic/hand knob (2) is connected with one end with frequency converter 2# control signal contact (5), frequency converter 1# control signal contact (4).
Blower fan manually selects the other end of the 3rd normally opened contact (31) in knob (3) to be connected with the other end of 1# blower fan contactor coil (6) with the other end of frequency converter 1# control signal contact (4) simultaneously; Blower fan manually selects the other end of the 4th normally opened contact (32) in knob (3) to be connected with the other end of 2# blower fan contactor coil (8) with the other end of frequency converter 2# control signal contact (5) simultaneously.
First main contacts (71) of 1# blower fan contactor main contacts (7), one end of the second main contacts (72) and the 3rd main contacts (73) three groups of main contactss are connected with the three-phase of the fan power in peripheral relevant device respectively, and the other end is connected with the three-phase input end of the 1# blower motor in peripheral relevant device respectively; 4th main contacts (91) of 2# blower fan contactor main contacts (9), one end of the 5th main contacts (92) and the 6th main contacts (93) three groups of main contactss are connected with the three-phase of the fan power in peripheral relevant device respectively, and the other end is connected with the three-phase input end of the 2# blower motor in peripheral relevant device respectively.
Workflow of the present utility model is as follows:
From outside alternating current by after single-phase transformer transformation for whole control loop provides control power supply.
When automatic/hand knob (2) is threaded to automated location, the first normally opened contact (21) in automatic/hand knob (2) is in open position, and the second normally opened contact (22) is in the close position.Now 1# blower fan contactor coil (6) by frequency converter 1# control signal contact (4) control whether electric; 2# blower fan contactor coil (8) by frequency converter 2# control signal contact (5) control whether electric.When frequency converter temperature is higher than a certain temperature X DEG C, frequency converter 1# control signal contact (4) closes, 1# blower fan contactor coil (6) is obtained electric, first main contacts (71) of 1# blower fan contactor main contacts (7), the second main contacts (72) and the 3rd main contacts (73) three groups of main contactss close, and drive 1# blower fan to cool frequency converter; When frequency converter temperature continues to raise, higher than (Y>X) during a certain temperature Y DEG C, frequency converter 2# control signal contact (5) closes, 2# blower fan contactor coil (8) is obtained electric, 4th main contacts (91) of 2# blower fan contactor main contacts (9), the 5th main contacts (92) and the 6th main contacts (93) three groups of main contactss close, drive 2# blower fan to cool frequency converter, now 1# and 2# blower fan works to frequency converter cooling simultaneously, to prevent frequency converter excess temperature.
When automatic/hand knob (2) is threaded to manual position, the first normally opened contact (21) in automatic/hand knob (2) is in the close position, and the second normally opened contact (22) is in open position.Now 1# blower fan contactor coil (6) by blower fan manually select the 3rd normally opened contact (31) in knob (3) control whether electric; 2# blower fan contactor coil (8) by blower fan manually select the 4th normally opened contact (32) in knob (3) control whether electric.When frequency converter temperature is higher than a certain temperature X DEG C, blower fan manually selects knob (3) to be threaded to, and the 4th normally opened contact (32) disconnects, the 3rd normally opened contact (31) make position, 1# blower fan contactor coil (6) is obtained electric, first main contacts (71) of 1# blower fan contactor main contacts (7), the second main contacts (72) and the 3rd main contacts (73) three groups of main contactss close, and drive 1# blower fan to cool frequency converter.When frequency converter temperature is higher than (Y>X) during a certain temperature Y DEG C, because frequency converter 1# control signal contact (4) and frequency converter 2# control signal contact (5) close simultaneously, make control electricity through the 3rd closed normally opened contact (31), closed normally opened contact (4), closed normally opened contact (5) is 2# blower fan contactor coil (8) power supply, 4th main contacts (91) of 2# blower fan contactor main contacts (9), 5th main contacts (92) and the 6th main contacts (93) three groups of main contactss close, 2# blower fan is driven to cool frequency converter, now 1# and 2# blower fan works simultaneously and to cool frequency converter, reach the object preventing frequency converter excess temperature,
In like manner, when blower fan manually select knob (3) to be threaded to the 3rd normally opened contact (31) disconnects, the 4th normally opened contact (32) is closed time, 2# blower fan contactor coil (8) obtains electric, 4th main contacts (91) of 2# blower fan contactor main contacts (9), the 5th main contacts (92) and the 6th main contacts (93) three groups of main contactss close, and drive 2# blower fan to cool frequency converter.When frequency converter temperature is higher than a certain temperature Y DEG C, because frequency converter 1# control signal contact (4) and frequency converter 2# control signal contact (5) close simultaneously, make control electricity through the 4th closed normally opened contact (32), closed normally opened contact (5), closed normally opened contact (4) is 1# blower fan contactor coil (6) power supply, first main contacts (71) of 1# blower fan contactor main contacts (7), second main contacts (72) and the 3rd main contacts (73) three groups of main contactss close, 1# blower fan is driven to cool frequency converter, now 1# and 2# blower fan works simultaneously and to cool frequency converter, reach the object preventing frequency converter excess temperature.
Claims (1)
1. the anti-circuit temperature excessively under explosion-proof high-pressure frequency converter manual control mode, is characterized in that: this electric route test power supply (1), automatic/hand knob (2), blower fan manually select knob (3), frequency converter 1# control signal contact (4), frequency converter 2# control signal contact (5), 1# blower fan contactor coil (6), 1# blower fan contactor main contacts (7), 2# blower fan contactor coil (8), 2# blower fan contactor main contacts (9) composition; Described control power supply (1) is made up of a single-phase transformer; Automatic/hand knob (2) is two grades of knobs, comprises 2 normally opened contacts: the first normally opened contact (21), the second normally opened contact (22); Blower fan manually selects knob (3) to be also two grades of knobs, comprises 2 normally opened contacts: the 3rd normally opened contact (31), the 4th normally opened contact (32); Frequency converter 1# control signal contact (4) and frequency converter 2# control signal contact (5) are normally opened contact; 1# blower fan contactor main contacts (7) is made up of the first main contacts (71), the second main contacts (72), the 3rd main contacts (73) three groups of main contactss; 2# blower fan contactor main contacts (9) is made up of the 4th main contacts (91), the 5th main contacts (92), the 6th main contacts (93) three groups of main contactss; Control in power supply (1), the former limit of single-phase transformer is connected with external ac power source; One end of single-phase transformer secondary is connected with one end of first normally opened contact (21) of automatic/hand knob (2), the second normally opened contact (22); The other end of single-phase transformer secondary is connected with 1# blower fan contactor coil (6) one end with 2# blower fan contactor coil (8); The other end and the blower fan of the first normally opened contact (21) in automatic/hand knob (2) manually select the 3rd normally opened contact (31) in knob (3) to be connected with one end of the 4th normally opened contact (32); The other end of the second normally opened contact (22) in automatic/hand knob (2) is connected with one end with frequency converter 2# control signal contact (5), frequency converter 1# control signal contact (4); Blower fan manually selects the other end of the 3rd normally opened contact (31) in knob (3) to be connected with the other end of 1# blower fan contactor coil (6) with the other end of frequency converter 1# control signal contact (4); Blower fan manually selects the other end of the 4th normally opened contact (32) in knob (3) to be connected with the other end of 2# blower fan contactor coil (8) with the other end of frequency converter 2# control signal contact (5); First main contacts (71) of 1# blower fan contactor main contacts (7), one end of the second main contacts (72) and the 3rd main contacts (73) three groups of main contactss are connected with the three-phase of the fan power in peripheral relevant device respectively, and the other end is connected with the three-phase input end of the 1# blower motor in peripheral relevant device respectively; 4th main contacts (91) of 2# blower fan contactor main contacts (9), one end of the 5th main contacts (92) and the 6th main contacts (93) three groups of main contactss are connected with the three-phase of the fan power in peripheral relevant device respectively, and the other end is connected with the three-phase input end of the 2# blower motor in peripheral relevant device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368127.4U CN204179936U (en) | 2014-07-06 | 2014-07-06 | Anti-circuit temperature excessively under a kind of explosion-proof high-pressure frequency converter manual control mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368127.4U CN204179936U (en) | 2014-07-06 | 2014-07-06 | Anti-circuit temperature excessively under a kind of explosion-proof high-pressure frequency converter manual control mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204179936U true CN204179936U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420368127.4U Expired - Lifetime CN204179936U (en) | 2014-07-06 | 2014-07-06 | Anti-circuit temperature excessively under a kind of explosion-proof high-pressure frequency converter manual control mode |
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| Country | Link |
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| CN (1) | CN204179936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092361A (en) * | 2014-07-06 | 2014-10-08 | 唐山开诚电控设备集团有限公司 | Over-temperature prevention circuit of anti-explosion high-voltage frequency converter under manual control mode |
| CN109818334A (en) * | 2019-02-26 | 2019-05-28 | 上海思致汽车工程技术有限公司 | A kind of three-phase motor Drive Protecting Circuit |
-
2014
- 2014-07-06 CN CN201420368127.4U patent/CN204179936U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092361A (en) * | 2014-07-06 | 2014-10-08 | 唐山开诚电控设备集团有限公司 | Over-temperature prevention circuit of anti-explosion high-voltage frequency converter under manual control mode |
| CN104092361B (en) * | 2014-07-06 | 2017-11-14 | 中信重工开诚智能装备有限公司 | A kind of anti-circuit temperature excessively under explosion-proof high-pressure frequency converter manual control mode |
| CN109818334A (en) * | 2019-02-26 | 2019-05-28 | 上海思致汽车工程技术有限公司 | A kind of three-phase motor Drive Protecting Circuit |
| CN109818334B (en) * | 2019-02-26 | 2023-10-27 | 上海思致汽车工程技术有限公司 | Three-phase motor drive protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 063020 Torch Road, Tangshan City high tech Zone, Hebei, No. 183 Patentee after: CITIC HIC KAICHENG INTELLIGENCE EQUIPMENT Co.,Ltd. Address before: 063020 Torch Road, Tangshan City high tech Zone, Hebei, No. 183 Patentee before: TANGSHAN KAICHENG ELECTRONIC CONTROL EQUIPMENT GROUP Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150225 |