CN205489458U - Water cooled machine low water level protection circuit - Google Patents
Water cooled machine low water level protection circuit Download PDFInfo
- Publication number
- CN205489458U CN205489458U CN201521122255.1U CN201521122255U CN205489458U CN 205489458 U CN205489458 U CN 205489458U CN 201521122255 U CN201521122255 U CN 201521122255U CN 205489458 U CN205489458 U CN 205489458U
- Authority
- CN
- China
- Prior art keywords
- protection circuit
- water level
- motor
- low water
- level protection
- 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 - Fee Related
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a water cooled machine low water level protection circuit, including the power, the power is connected to the motor, still be connected with the protection circuit in power to the motor, contains the low water level protection circuit in the protection circuit, the low water level protection circuit include electric contact pressure gauge to and the electric contact relay of establishing ties. The utility model discloses the effect is obvious, and convenient and practical in the time of can preventing that the water supply well motor from rolling off the production line because of the well water level is less than the motor lowest water level, causes the motor can't carry out liquid cooling, causes interior temperature of motor short time to rise, burns out the emergence of the motor condition.
Description
Technical field
This utility model relates to a kind of water-cooled machine low water level protection circuit, belongs to circuit field.
Background technology
Present stage, water supply well motor is protected without low water level in running, when well water level rolls off the production line less than motor lowest water level, causes motor to cannot be carried out water-cooling, and in causing the motor short time, temperature raises, and burns out motor.
Summary of the invention
The problem existed for above-mentioned prior art, this utility model provides a kind of water-cooled machine low water level protection circuit, prevents from burning out because of low water level motor.
To achieve these goals; the technical solution adopted in the utility model is: a kind of water-cooled machine low water level protection circuit; including power supply; power supply is connected to motor; described power supply is also associated with protection circuit to motor; described protection circuit is contained within low water level protection circuit, and described low water level protection circuit includes electro connecting pressure gauge, and the electric contact relay of series connection.
Further, described power supply is three-phase electricity, is connected to motor by the switch QS being sequentially connected with, electric fuse FV1, A.C. contactor KM3 with thermorelay FR.
Further; described protection circuit includes connecting the fuse FU2 that L3 phase is insured between a FV1 and A.C. contactor KM; fuse FU2 is in series with press button SB2, press button SB2 and is in series with press button SB1, described press button SB1 and is parallel with an A.C. contactor KM2；It is in series with auxiliary reclay KA, auxiliary reclay KA after described press button SB1 to be in series with A.C. contactor KM1, described auxiliary reclay KA and A.C. contactor KM1 and be connected in parallel to be equipped with the low water level protection circuit of switch S；It is in series with fuse FR1, thermorelay FR1 after described A.C. contactor KM1 to be in series with fuse FU1, fuse FU1 and be connected to zero line N.
The beneficial effects of the utility model are: by low water level protection circuit can prevent water supply well motor because of well water level roll off the production line less than motor lowest water level time, cause motor to cannot be carried out water-cooling, cause temperature in the motor short time to raise, burn out the generation of motor conditions.
Accompanying drawing explanation
Fig. 1 is this utility model circuit diagram.
In figure: 1, power supply, 2, motor, 3, protection circuit, 4, low water level protection circuit, 41, electro connecting pressure gauge, 42, electric contact relay.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1; a kind of water-cooled machine low water level protection circuit; including power supply 1; power supply 1 is connected to motor 2; described power supply 1 to motor 2 is also associated with protection circuit 3; described protection circuit 3 is contained within low water level protection circuit 4, and described low water level protection circuit 4 includes electro connecting pressure gauge 41, and the electric contact relay 42 connected with electro connecting pressure gauge 41.
Further, described power supply 1 is three-phase electricity, is connected to motor 2 by the switch QS being sequentially connected with, electric fuse FV1, A.C. contactor KM3 with thermorelay FR.
Further; described protection circuit 3 includes connecting the fuse FU2 that L3 phase is insured between a FV1 and A.C. contactor KM; fuse FU2 is in series with press button SB2, press button SB2 and is in series with press button SB1, described press button SB1 and is parallel with an A.C. contactor KM2；It is in series with auxiliary reclay KA, auxiliary reclay KA after described press button SB1 to be in series with A.C. contactor KM1, described auxiliary reclay KA and A.C. contactor KM1 and be connected in parallel to be equipped with the low water level protection circuit 4 of switch S；It is in series with fuse FR1, thermorelay FR1 after described A.C. contactor KM1 to be in series with fuse FU1, fuse FU1 and be connected to zero line N.
When well water level rolls off the production line less than motor lowest water level, the hypotony of electro connecting pressure gauge 41 detection, thus electric contact relay 42 action, motor is carried out protection shutdown thus effectively prevents from burning out motor because water level is low.
In sum, this utility model effect is obvious, convenient and practical, can prevent water supply well motor because of well water level roll off the production line less than motor lowest water level time, cause motor to cannot be carried out water-cooling, in causing the motor short time, temperature raises, and burns out the generation of motor conditions.
Claims (3)
1. a water-cooled machine low water level protection circuit, including power supply (1), power supply (1) is connected to motor (2), is also associated with protection circuit (3) in described power supply (1) to motor (2)；It is characterized in that, described protection circuit (3) is contained within low water level protection circuit (4), and described low water level protection circuit (4) includes electro connecting pressure gauge (41), and the electric contact relay (42) connected with electro connecting pressure gauge (41).
A kind of water-cooled machine low water level protection circuit the most according to claim 1, it is characterised in that described power supply (1) is three-phase electricity, is connected to motor (2) by the switch QS being sequentially connected with, electric fuse FV1, A.C. contactor KM3 with thermorelay FR.
A kind of water-cooled machine low water level protection circuit the most according to claim 1; it is characterized in that; described protection circuit (3) includes connecting the fuse FU2 that L3 phase is insured between a FV1 and A.C. contactor KM; fuse FU2 is in series with press button SB2; press button SB2 is in series with press button SB1, described press button SB1 and is parallel with an A.C. contactor KM2；It is in series with auxiliary reclay KA, auxiliary reclay KA after described press button SB1 to be in series with A.C. contactor KM1, described auxiliary reclay KA and A.C. contactor KM1 and be connected in parallel to be equipped with the low water level protection circuit (4) of switch S；It is in series with fuse FR1, thermorelay FR1 after described A.C. contactor KM1 to be in series with fuse FU1, fuse FU1 and be connected to zero line N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122255.1U CN205489458U (en) | 2015-12-31 | 2015-12-31 | Water cooled machine low water level protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122255.1U CN205489458U (en) | 2015-12-31 | 2015-12-31 | Water cooled machine low water level protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205489458U true CN205489458U (en) | 2016-08-17 |
Family
ID=56661772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521122255.1U Expired - Fee Related CN205489458U (en) | 2015-12-31 | 2015-12-31 | Water cooled machine low water level protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205489458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838711A (en) * | 2019-11-19 | 2020-02-25 | 中石化南京工程有限公司 | Anti-interference circuit |
-
2015
- 2015-12-31 CN CN201521122255.1U patent/CN205489458U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838711A (en) * | 2019-11-19 | 2020-02-25 | 中石化南京工程有限公司 | Anti-interference circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20171231 |