CN203367985U - Motor dual protection belt alarm automation control device - Google Patents
Motor dual protection belt alarm automation control device Download PDFInfo
- Publication number
- CN203367985U CN203367985U CN 201320351405 CN201320351405U CN203367985U CN 203367985 U CN203367985 U CN 203367985U CN 201320351405 CN201320351405 CN 201320351405 CN 201320351405 U CN201320351405 U CN 201320351405U CN 203367985 U CN203367985 U CN 203367985U
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Abstract
The utility model discloses a motor temperature protective device, especially to a motor dual protection belt alarm automation control device. A first branch is composed of an experiment button SB, a stop button SR, a contactor KM, a normally-closed contact 2KV-1 of a relay 2KV, a normally-closed contact 4KV-1 of a relay 4KV and a normally-closed contact FR-1 of a thermal relay which are sequentially connected in series from a U phase of a three-phase power supply, and is connected to a W phase of the three-phase power supply. The experiment button SB is connected in parallel with a normally-open contact KM-4 of a contactor KM, a normally-open contact 1KV-2 of an intermediate relay 1KV and a normally-open contact 3KV-2 of an intermediate relay 3KV. A second branch is composed of a contact 1SP-1 of a first electric contact air pressure gauge, a normally-closed contact KV-1 of the contactor KM and the intermediate relay 1KV which are sequentially connected in series from an anode of a direct-current power supply, and is connected to a cathode of the direct-current power supply. According to the utility model, when one electric contact meter is damaged, a standby electric contact meter is rapidly used so that equipment is guaranteed not to be damaged easily and production reliability is increased.
Description
Technical field
The utility model relates to a kind of motor temperature protector, is specifically related to a kind of motor duplicate protection band alarm automatic control device.
Background technology
Continue when operation in the situations such as overload, phase shortage, blocking when motor, motor but continues operation, if the motor in can not be fast out of service, the insulation of coil of stator of motor is easy to damage.
Oil gas adds Medium-voltage Motor normally in service; hydrogovernor motor for example; it is equipped with two electric moter voltage power tables; when damaging appears in the first a pair of contact of electro connecting pressure gauge; the protection loop can not be protected fast, causes governing system when low oil pressure or high oil pressure during fault, the governing system motor is damaged or the speed regulator oil pressure of losing the job; cause hydraulic generator electromechanics to lose protection, easily cause the hydraulic turbine fault that flies to escape to occur.
The utility model content
The purpose of this utility model is to provide a kind of motor duplicate protection band alarm automatic control device, and having solved current oil gas, to add the automatic control equipment protection of Medium-voltage Motor not comprehensive, can not when breaking down, guarantee to stop quickly the problem of motor.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: a kind of motor duplicate protection band alarm automatic control device comprises being connected to the first branch road between mutually of three phase mains U phase and three phase mains W, being connected to the second branch road, the 3rd branch road, the 4th branch road and the 5th branch road between the DC power supply both positive and negative polarity;
The normally-closed contact 4KV-1 of experiment button SB, the stop button SR that described first route is connected in series mutually successively from three phase mains U, normally-closed contact 2KV-1, the relay 4KV of contactor KM, relay 2KV and the normally-closed contact FR-1 of thermal relay FR form, be connected to three phase mains W phase, wherein said experiment button SB is parallel with the normally opened contact 1KV-2 of normally opened contact KM-4, auxiliary relay 1KV of contactor KM and the normally opened contact 3KV-2 of auxiliary relay 3KV;
The normally-closed contact KM-1 of the barometric contact 1SP-1 of the first electric contact, contactor KM that described second route DC power anode is connected in series successively and auxiliary relay 1KV form, and are connected to DC power cathode;
The normally opened contact KM-2 of the barometric contact 1SP-2 of the first electric contact, contactor KM that described the 3rd route DC power anode is connected in series successively and auxiliary relay 2KV form, and are connected to DC power cathode;
The normally-closed contact KM-3 of the barometric contact 2SP-1 of the second electric contact, contactor KM that described the 4th route DC power anode is connected in series successively and auxiliary relay 3KV form, be connected to DC power cathode, be connected with alarm BJ1 between the normally-closed contact KM-3 of the barometric contact 2SP-1 of wherein said the second electric contact and contactor KM, be connected to DC power cathode;
The barometric contact 2SP-2 of the second electric contact that described the 5th route DC power anode is connected in series successively and auxiliary relay 4KV form, and are connected to DC power cathode, and wherein said auxiliary relay 4KV is parallel with alarm BJ2;
There are normally opened contact KM-0 and the thermal relay FR of plastic switch QA, relay K M to be serially connected on the three-phase power line of motor.
Further technical scheme is, this device also comprises the 6th branch road and the 7th branch road be connected between three phase mains U phase and three phase mains W phase, is connected to the 8th branch road between three phase mains V phase and three phase mains W phase;
The three phase mains indicator light HL-1 that described the 6th route is serially connected between three phase mains U phase and three phase mains W phase forms;
The normally opened contact KM-5 of the relay K M that described the 7th route is connected in series mutually successively from three phase mains U and shutdown warning light HL-2 form, and are connected to three phase mains W phase;
The normally-closed contact FR-0 of normally opened contact KM-0, the thermal relay FR of the relay K M that described the 8th route is connected in series mutually successively from three phase mains V and enough relay indicating light HL-3 form, and are connected to three phase mains W phase.
Further technical scheme is, described three phase mains is the 380V three phase mains, and described DC power supply is ± the 24V power supply.
Compared with prior art, the beneficial effects of the utility model are: increased duplicate protection, be applicable to the startup of all kinds separate unit motor, stop (for the equipment that uses a pair of normally opened contact and normally-closed contact, the normally-closed contact changing-over is become to normally opened contact, use this control cabinet not to be affected), particularly for the electric contact equipment of precision instrument class, as dry-reed relay, the relay class that electro connecting pressure gauge and contact capacity are less, as use this control cabinet can reduce to flow through the electric current of corresponding contacts, contact does not emit arc, be difficult for sticking, and realized duplicate protection, extended the useful life of such device contact, improved electric motor starting, the stability stopped.After an electric contact table damages, standby electric contact table drops into rapidly simultaneously, and assurance equipment is not fragile, has improved the production reliability.This device is integrated in a control cabinet, install wiring simple, be convenient to promote.This device provides foundation for manufacturer production design, and investment for trnasforming urban land is little, designs further hommization, convenient for installation and maintenance, and it is more reasonable to use.
The accompanying drawing explanation
Fig. 1 is circuit connection diagram of the present utility model.
Fig. 2 is motor circuit connection layout of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 and Fig. 2 show an embodiment of a kind of motor duplicate protection of the utility model band alarm automatic control device: a kind of motor duplicate protection band alarm automatic control device comprises being connected to the first branch road between mutually of three phase mains U phase and three phase mains W, being connected to the second branch road, the 3rd branch road, the 4th branch road and the 5th branch road between the DC power supply both positive and negative polarity;
The normally-closed contact 4KV-1 of experiment button SB, the stop button SR that described first route is connected in series mutually successively from three phase mains U, normally-closed contact 2KV-1, the relay 4KV of contactor KM, relay 2KV and the normally-closed contact FR-1 of thermal relay FR form, be connected to three phase mains W phase, wherein said experiment button SB is parallel with the normally opened contact 1KV-2 of normally opened contact KM-4, auxiliary relay 1KV of contactor KM and the normally opened contact 3KV-2 of auxiliary relay 3KV;
The normally-closed contact KM-1 of the barometric contact 1SP-1 of the first electric contact, contactor KM that described second route DC power anode is connected in series successively and auxiliary relay 1KV form, and are connected to DC power cathode;
The normally opened contact KM-2 of the barometric contact 1SP-2 of the first electric contact, contactor KM that described the 3rd route DC power anode is connected in series successively and auxiliary relay 2KV form, and are connected to DC power cathode;
The normally-closed contact KM-3 of the barometric contact 2SP-1 of the second electric contact, contactor KM that described the 4th route DC power anode is connected in series successively and auxiliary relay 3KV form, be connected to DC power cathode, be connected with alarm BJ1 between the normally-closed contact KM-3 of the barometric contact 2SP-1 of wherein said the second electric contact and contactor KM, be connected to DC power cathode;
The barometric contact 2SP-2 of the second electric contact that described the 5th route DC power anode is connected in series successively and auxiliary relay 4KV form, and are connected to DC power cathode, and wherein said auxiliary relay 4KV is parallel with alarm BJ2.
There are normally opened contact KM-0 and the thermal relay FR of plastic switch QA, relay K M to be serially connected on the three-phase power line of motor.
Another embodiment according to a kind of motor duplicate protection of the utility model band alarm automatic control device, this device also comprises the 6th branch road and the 7th branch road be connected between three phase mains U phase and three phase mains W phase, is connected to the 8th branch road between three phase mains V phase and three phase mains W phase;
The three phase mains indicator light HL-1 that described the 6th route is serially connected between three phase mains U phase and three phase mains W phase forms;
The normally opened contact KM-5 of the relay K M that described the 7th route is connected in series mutually successively from three phase mains U and shutdown warning light HL-2 form, and are connected to three phase mains W phase;
The normally-closed contact FR-0 of normally opened contact KM-0, the thermal relay FR of the relay K M that described the 8th route is connected in series mutually successively from three phase mains V and relay indicating light HL-3 form, and are connected to three phase mains W phase.Play the whether effect of phase shortage of observable three phase mains herein.
According to another embodiment of a kind of motor duplicate protection of the utility model band alarm automatic control device, described three phase mains is the 380V three phase mains, and described DC power supply is ± the 24V power supply.
Operation principle of the present utility model is: as shown in Figure 1, when in speed regulator, oil pressure drops to setting, the the first barometric contact of electric contact 1SP-1 closure, + 24V power supply is in turn through the second branch road, auxiliary relay 1KV energising, the normally opened contact 1KV-2 closure of auxiliary relay 1KV, the first branch road is communicated with;
The first branch road, contactor KM action, the normally opened contact KM-0 closure of contactor KM, normally-closed contact KM-1 disconnects, the coil losing electricity of auxiliary relay 1KV, the normally opened contact KM-4 of contactor KM is converted to make position by disconnection, continues to connect the motor M working power.
When in speed regulator, oil pressure rises to setting, the contact 1PS-2 closure of the first electric contact oil pressure gauge in the 3rd branch road, and the normally opened contact KM-2 of relay K M is in closure state, auxiliary relay 2KV energising, the normally closed 2KV-1 of auxiliary relay 2KV in the first branch road is converted to open position by closure, the first branch road disconnects, the motor M outage, and motor M stops pressurization.
When the first electric contact oil pressure gauge of speed regulator is damaged, when oil pressure value drops to setting, contact 1SP-1 can't be closed, can't start the first branch road work loop, and motor M is not worked, oil pressure drops to the second standby electric contact oil pressure gauge setting, the contact 2PS-1 closing of contact of the second electric contact oil pressure gauge, alarm BJ1 work, the actuating coil of auxiliary relay 3KV obtains electric, the closed connection of the normally opened contact 3KV-2 of auxiliary relay 3KV the first branch road in the first branch road, motor M work.
When speed regulator the first electric contact oil pressure gauge is damaged, when pressure reaches setting, contact 1SP-2 can't be closed, can't disconnect the first branch road, and motor M continues pressurization.When oil pressure reaches the second electric contact oil pressure gauge setting, contact 2SP-2 closure, alarm BJ2 work, the actuating coil of auxiliary relay 4KV obtains electric, the normally-closed contact 4KV-1 of the auxiliary relay 4KV of the first branch road is converted to open position by closure, the first branch road disconnects, the motor M outage, and motor M stops pressurization.
Phase line U and phase line W switch on when normal, and power supply indicator HL-1 normally indicates, and when phase line U and mono-of phase line W or two dead electricity, power supply indicator HL-1 extinguishes.
When the oil pressure motor normally pressurizes, relay indicating light HL-3 indication, halt indicator HL-2 extinguishes.
When the oil pressure motor stops pressurizeing, halt indicator HL-2 indication, relay indicating light HL-3 extinguishes.
Utilize electronics auxiliary relay 1KV, 2KV coil to connect precision instrument work loop, the electrification time that flows through the interior 1SP-1 of the first electric contact 1SP, 1SP-2 normally-closed contact, normally opened contact is short, by intermediate contact switch operating electric current, and the electric current of stream 1SP-1,1SP-2 normally-closed contact, normally opened contact is little, contact does not emit arc, be difficult for sticking, extended such transfer contact useful life.
Claims (3)
1. a motor duplicate protection band alarm automatic control device is characterized in that: comprise being connected to the first branch road between mutually of three phase mains U phase and three phase mains W, being connected to the second branch road, the 3rd branch road, the 4th branch road and the 5th branch road between the DC power supply both positive and negative polarity;
The normally-closed contact 4KV-1 of experiment button SB, the stop button SR that described first route is connected in series mutually successively from three phase mains U, normally-closed contact 2KV-1, the relay 4KV of contactor KM, relay 2KV and the normally-closed contact FR-1 of thermal relay FR form, be connected to three phase mains W phase, wherein said experiment button SB is parallel with the normally opened contact 1KV-2 of normally opened contact KM-4, auxiliary relay 1KV of contactor KM and the normally opened contact 3KV-2 of auxiliary relay 3KV;
The normally-closed contact KM-1 of the barometric contact 1SP-1 of the first electric contact, contactor KM that described second route DC power anode is connected in series successively and auxiliary relay 1KV form, and are connected to DC power cathode;
The normally opened contact KM-2 of the barometric contact 1SP-2 of the first electric contact, contactor KM that described the 3rd route DC power anode is connected in series successively and auxiliary relay 2KV form, and are connected to DC power cathode;
The normally-closed contact KM-3 of the barometric contact 2SP-1 of the second electric contact, contactor KM that described the 4th route DC power anode is connected in series successively and auxiliary relay 3KV form, be connected to DC power cathode, be connected with alarm BJ1 between the normally-closed contact KM-3 of the barometric contact 2SP-1 of wherein said the second electric contact and contactor KM, be connected to DC power cathode;
The barometric contact 2SP-2 of the second electric contact that described the 5th route DC power anode is connected in series successively and auxiliary relay 4KV form, and are connected to DC power cathode, and wherein said auxiliary relay 4KV is parallel with alarm BJ2;
There are normally opened contact KM-0 and the thermal relay FR of plastic switch QA, relay K M to be serially connected on the three-phase power line of motor.
2. a kind of motor duplicate protection band alarm automatic control device according to claim 1, it is characterized in that: this device also comprises the 6th branch road and the 7th branch road be connected between three phase mains U phase and three phase mains W phase, is connected to the 8th branch road between three phase mains V phase and three phase mains W phase;
The three phase mains indicator light HL-1 that described the 6th route is serially connected between three phase mains U phase and three phase mains W phase forms;
The normally opened contact KM-5 of the relay K M that described the 7th route is connected in series mutually successively from three phase mains U and shutdown warning light HL-2 form, and are connected to three phase mains W phase;
The normally-closed contact FR-0 of normally opened contact KM-0, the thermal relay FR of the relay K M that described the 8th route is connected in series mutually successively from three phase mains V and relay indicating light HL-3 form, and are connected to three phase mains W phase.
3. a kind of motor duplicate protection band alarm automatic control device according to claim 1, it is characterized in that: described three phase mains is the 380V three phase mains, described DC power supply is ± the 24V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320351405 CN203367985U (en) | 2013-06-19 | 2013-06-19 | Motor dual protection belt alarm automation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320351405 CN203367985U (en) | 2013-06-19 | 2013-06-19 | Motor dual protection belt alarm automation control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367985U true CN203367985U (en) | 2013-12-25 |
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ID=49815704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320351405 Expired - Lifetime CN203367985U (en) | 2013-06-19 | 2013-06-19 | Motor dual protection belt alarm automation control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203367985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354346A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor dual protection belt alarm automation control device |
-
2013
- 2013-06-19 CN CN 201320351405 patent/CN203367985U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354346A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor dual protection belt alarm automation control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |