A kind of motor machine with on the spot with distant place DCS interlocking electric control gear
Technical field
The utility model relates to the motor machine control field, particularly a kind of motor machine with on the spot with distant place DCS interlocking electric control gear.
Background technology
Aborning, the personnel of electric mechanical equipment production run operation control need to have at fingertips to the electric mechanical equipment running status.For the automation that operates control to save the man power and material, realize the DCS(Distributed Control System) automatic operation control or interlocked control, but bring safety and flexibility problem.Therefore, to having the electric mechanical equipment of automatic operation control or interlocked operation control, manual operation control be arranged and remove the control of DCS automatic operation or the function of interlocked operation control.
Simultaneously, in order to save man power and material and increase people's work comfort level, distant place DCS automatic operation control be realize, safety and flexibility problem equally also brought.For example, be in two places operation control, and the electric mechanical equipment that needs distant place DCS automatic operation control, local operation control is arranged and remove the function that distant place DCS automatic operation is controlled, especially when unexpected starting may jeopardize on every side personal security, DCS starting motor tool equipment place, a distant place will give that electric mechanical equipment is other to be sent distant place starting anticipating signal or adopt on the spot emergency power off and lock on the spot the safety measure that a distant place can not be opened.
Summary of the invention
The purpose of this utility model be to provide a kind of motor machine with on the spot with the interlocking electric control gear in a distant place, it can realize automatically controlled with the interlocking of distant place DCS on the spot, handling safety, flexibly can be saved the man power and material and be increased people's work comfort level.
In order to achieve the above object, the utility model is achieved by the following technical solutions.
A kind of motor machine with on the spot with distant place DCS interlocking electric control gear, comprise main circuit, control circuit and control power supply, described major loop comprises contactor, the motor that is electrically connected with contactor, it is characterized in that described control circuit comprises starting with DCS interlocked control loop, a distant place, distant place DCS on the spot predicts the loop on the spot.
Characteristics of the present utility model and further the improvement are:
(1) described distant place DCS starts and predicts on the spot between the both positive and negative polarity that the loop is connected to the control power supply, is to be started the advance notice switch and predicted on the spot the series loop that electric bell consists of by distant place DCS.The further improvement of technique scheme is, the described electric bell of predicting on the spot is parallel with and predicts on the spot indicator light; The described electric bell of predicting on the spot is parallel with distant place DCS electric bell indicator light.
(2) describedly comprise three road change over switches with DCS interlocked control loop, a distant place on the spot, three input short circuits of three road change over switches are connected in series a scram button on the spot between the positive pole of its short circuit point and described control power supply; The first, the 3rd output of described three road change over switches is distant place DCS control end, and the second output is control end on the spot; Connect successively between the second output of described three road change over switches and the negative pole of described control power supply on the spot stop button, on the spot start button, contactor coil, auxiliary switch often driven by first of contactor and described on the spot start button is in parallel; Be in series with successively distant place DCS shutdown switch and the first auxiliary relay coil between the 3rd output of described three road change over switches and the negative pole of described control power supply; Connect the successively end of auxiliary normally closed switch of distant place DCS starting switch and the first auxiliary relay of the first output of described three road change over switches, the other end of the auxiliary normally closed switch of the first auxiliary relay connect the on the spot common node of start button and contactor coil.
Further improvement in the technical proposal is, is serially connected with thermal relay in the described main circuit, and the normally closed auxiliary switch of described thermal relay is connected between contactor coil and the control power cathode; It further improves and is, described interlocking electric control gear also comprises the emergency stop valve trip show circuit, described emergency stop valve trip show circuit is connected between the both positive and negative polarity of control power supply, often drives auxiliary switch by first of the emergency stop valve trip indicator light of connecting and thermal relay and forms; It further improves and is, is serially connected with circuit breaker in the described main circuit, and first of the short circuit tripping operation auxiliary switch of described circuit breaker and described thermal relay often opened the auxiliary switch parallel connection.
(3) described interlocking electric control gear also comprises the switching signal loop, and described switching signal loop is connected between the both positive and negative polarity of control power supply, is often to open the series loop that auxiliary switch and combined floodgate indicator light consist of by second of contactor.
(4) described interlocking electric control gear also comprises the trip signal loop, and described trip signal loop is connected between the both positive and negative polarity of control power supply, is the series loop that is made of the first normally closed auxiliary switch of contactor and the indicator light that trips.
The utility model motor machine with on the spot with the interlocking electric control gear of distant place DCS in, control circuit comprises starting with DCS interlocked control loop, a distant place, distant place DCS on the spot predicts the loop on the spot; Distant place DCS starts and to predict on the spot between the both positive and negative polarity that the loop is connected to the control power supply, is to be started the advance notice switch and predicted on the spot the series loop that electric bell consists of by distant place DCS, predicts on the spot electric bell and is parallel with and predicts on the spot indicator light.When distant place DCS starts, can carry out on the spot acousto-optic advance notice, the fail safe that improves remote operation at equipment by electric bell and indicator light.Simultaneously, predict on the spot electric bell and be parallel with distant place DCS electric bell indicator light, be used for the indication that distant place DCS starts the advance notice switch.
In addition, comprise three road change over switches with DCS interlocked control loop, a distant place on the spot, three input short circuits of three road change over switches are connected in series a scram button on the spot between the positive pole of its short circuit point and described control power supply, scram button has under the failure condition on the spot, preferentially stops the function of faulty equipment.Therefore, the utility model can be realized automatically controlled with the interlocking of distant place DCS on the spot, handling safety, flexible, and the while also can be saved the man power and material and increase people's work comfort level.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
Fig. 1 be a kind of motor machine of the present utility model with on the spot with the main circuit line map of distant place DCS interlocking electric control gear.
Fig. 2 is that the distant place DCS in the control circuit starts the line map of predicting on the spot the loop;
Fig. 3 be in the control circuit on the spot with DCS interlocked control loop, a distant place, switching signal loop, trip signal loop and emergency stop valve trip show circuit isocorrelate road figure.
Embodiment
With reference to Fig. 1, for a kind of motor machine of the present utility model with on the spot with the main circuit of distant place DCS interlocking electric control gear, wherein, the three-phase main power source connects three phase electric machine M by circuit breaker Q M, contactor KM, thermal relay KH successively, and the centre is provided with current transformer TAv on mutually.
In conjunction with Fig. 2, for starting, the distant place DCS in the control circuit predicts on the spot the loop, this loop is connected between the both positive and negative polarity of control power supply, to start advance notice switch I SRF and predict on the spot the series loop that electric bell HA consists of by distant place DCS, distant place DCS starts advance notice switch I SRF and is installed on DCS control room, a distant place, predict on the spot electric bell HA and be installed on device context, being used for distant place DCS startup forward direction device context provides the sound schedule information; Simultaneously, predict on the spot electric bell HA and be parallel with the on the spot advance notice indicator light 1HY2 that is installed in device context, being used for distant place DCS startup forward direction device context provides the light schedule information; Predict on the spot electric bell HA and be parallel with distant place DCS electric bell indicator light 1HY1, distant place DCS electric bell indicator light 1HY1 is arranged on DCS control room, a distant place, is used for feeding back the executing state that distant place DCS starts schedule information to the operator.In addition, the positive terminal of control power supply is in series with fuse, for the protection of the control power supply.
In conjunction with Fig. 3, for comprising in the control circuit on the spot and DCS interlocked control loop, a distant place, switching signal loop, trip signal loop and emergency stop valve trip show circuit.
Comprise three road change over switch SA with DCS interlocked control loop, a distant place on the spot, three inputs of three road change over switch SA (1,3, No. 5 binding post of corresponding SA) short circuit, be connected in series a scram button S on the spot between the positive pole of its short circuit point and control power supply, be used for promptly or accident preferentially stops motor rotation.The first, the 3rd output of three road change over switch SA (2, No. 6 binding posts of corresponding SA) is distant place DCS control end, and the second output (No. 4 binding posts of corresponding SA) is control end on the spot.Wherein, connect successively on the spot between the negative pole of the second output of three road change over switch SA and control power supply stop button SS, the normally closed auxiliary switch of start button SF, contactor coil and thermal relay on the spot, first of contactor KM often drives auxiliary switch and start button SF is in parallel on the spot, the automatic maintenance after being used for starting on the spot.Be in series with successively distant place DCS shutdown switch DCS-K2 and the first auxiliary relay KA1 coil between the negative pole of the 3rd output of three road change over switch SA and control power supply; Connect the successively end of auxiliary normally closed switch of distant place DCS starting switch DCS-K1 and the first auxiliary relay KA1 of the first output of three road change over switch SA, the other end of the auxiliary normally closed switch of the first auxiliary relay KA1 connect the on the spot common node of start button and contactor coil; Distant place DCS starting switch DCS-K1 directly realizes the start-up performance of equipment, and distant place DCS shutdown switch DCS-K2 realizes the hold function of equipment by the auxiliary normally closed switch of the first auxiliary relay KAI.
The emergency stop valve trip show circuit is connected between the both positive and negative polarity of control power supply, often drives auxiliary switch by first of the emergency stop valve trip indicator light HR that connects and thermal relay KH and forms, and the thermal tripping of crossing that is used for field apparatus (motor) shows; First of the short circuit tripping operation auxiliary switch of circuit breaker Q M and thermal relay KH often opens the auxiliary switch parallel connection, and the tripping operation that is used for control circuit breaker Q M shows.
The switching signal loop is connected between the both positive and negative polarity of control power supply, is often to open the series loop that auxiliary switch and combined floodgate indicator light HW1 consist of by second of contactor KM, and the "on" position information that is used for main circuit shows that the reflection field apparatus is in running status.
The trip signal loop is connected between the both positive and negative polarity of control power supply, is the series loop that is made of the first normally closed auxiliary switch of contactor KM and the indicator light HG that trips, and the tripped condition information that is used for main circuit shows that the reflection field apparatus is in halted state.
In addition, the positive terminal of control power supply is in series with fuse, for the protection of the control power supply.
Although below by reference to the accompanying drawings embodiment of the present utility model is described, the utility model is not limited to above-mentioned specific embodiments and applications field, and above-mentioned specific embodiments only is schematic, guiding, rather than restrictive.Those of ordinary skill in the art in the situation that does not break away from the scope that the utility model claim protects, can also make a variety of forms under the enlightenment of this specification, these all belong to the row of the utility model protection.