阅读说明：本技术 一种智能控制电机定期注油脂装置及控制方法 (Intelligent control motor regular grease injection device and control method ) 是由 王镜淇 郭莉侠 石岩 王亚东 吴东方 李洪伟 王金建 王腾毅 翁铖忠 杨磊 李亮 于 2020-07-17 设计创作，主要内容包括：本发明属于核电站电气维修技术领域,具体涉及一种智能控制电机定期注油脂装置及控制方法。本发明包括储脂盒、柱塞泵、电磁阀、注脂管线、注脂软管、电机加脂孔、注脂控制柜、电源、电机启停信号；储脂盒与柱塞泵的一端连接,柱塞泵的另一端与注脂管线连接,其上设有电磁阀；注脂管线通过注脂软管连接到电机加脂孔上；柱塞泵、电磁阀分别与注脂控制柜连接,注脂控制柜与电源连接,同时注脂控制柜的输入端接收电机启停信号。本发明能够提高电机运行可靠性,同时减少人力消耗、保护了人身安全、更精准的把握注油脂的时机,延长电机轴承的使用寿命。(The invention belongs to the technical field of electrical maintenance of nuclear power stations, and particularly relates to a device for intelligently controlling periodic grease injection of a motor and a control method. The grease storage box comprises a grease storage box, a plunger pump, an electromagnetic valve, a grease injection pipeline, a grease injection hose, a motor grease filling hole, a grease injection control cabinet, a power supply and a motor start-stop signal; the grease storage box is connected with one end of the plunger pump, the other end of the plunger pump is connected with a grease injection pipeline, and an electromagnetic valve is arranged on the other end of the plunger pump; the grease injection pipeline is connected to a motor grease filling hole through a grease injection hose; plunger pump, solenoid valve are connected with annotating the fat switch board respectively, annotate the fat switch board and are connected with the power, annotate the input of fat switch board simultaneously and receive the motor and open and stop the signal. The invention can improve the operation reliability of the motor, reduce the manpower consumption, protect the personal safety, more accurately grasp the grease injection time and prolong the service life of the motor bearing.)

1. The utility model provides a motor intelligent control grease injection device which characterized in that: the grease storage box comprises a grease storage box (1), a plunger pump (2), an electromagnetic valve (3), a grease injection pipeline (4), a grease injection hose (5), a motor grease filling hole (6), a grease injection control cabinet (7), a power supply (8) and a motor start-stop signal (9); the grease storage box (1) is connected with one end of the plunger pump (2), the other end of the plunger pump (2) is connected with the grease injection pipeline (4), and an electromagnetic valve (3) is arranged on the grease storage box; the grease injection pipeline (4) is connected to a motor grease filling hole (6) through a grease injection hose (5); plunger pump (2), solenoid valve (3) are connected with notes fat switch board (7) respectively, annotate fat switch board (7) and are connected with power (8), annotate the input of fat switch board (7) simultaneously and receive motor start-stop signal (9).

2. The intelligent motor control grease injection device according to claim 1, characterized in that: the grease injection control cabinet (7) is internally provided with a control system, and the control system comprises a primary loop and a secondary loop.

3. The intelligent motor control grease injection device according to claim 2, characterized in that: a primary loop of the control system is connected with a 220V alternating current power supply and a switch Q0, and is further sequentially connected with a transformer T, a rectifier U and a contactor KM.

4. The intelligent motor control grease injection device according to claim 3, characterized in that: the secondary circuit is provided with a PLC power lamp L1, and a fuse FU is arranged on the secondary circuit; a switch Q1 is provided between the primary and secondary circuits.

5. The intelligent motor control grease injection device according to claim 4, characterized in that: and a secondary loop of the control system is accessed to the PLC module.

6. The intelligent motor control grease injection device according to claim 5, characterized in that: the input end of the PLC module is respectively connected with an oil pump motor running state detection switch K1, a test button starting SA, a test button stopping TA and a conversion button S0; the output end is connected with a contactor KM, an electromagnetic valve YV, an alarm lamp L2 and a start-stop lamp L3.

7. The control method of the intelligent motor control grease injection device according to claim 6, characterized in that: the method comprises the following steps:

manual greasing of a plunger pump:

step (1): placing a conversion knob S0 in a non-automatic mode, switching on 220V alternating current, closing a switch Q0, converting current into 5V alternating current through a transformer T, converting the alternating current into 5V direct current through a rectifier U, switching on a contactor KM after a PLC sends out a closing instruction, and starting the grease adding of a plunger pump motor;

step (2): the switch Q1 is closed, the PLC power supply indication L1 lamp is electrified through the fuse FU, the indication lamp L1 is lighted, and meanwhile, the PLC is electrified to operate;

and (3): entering a setting interface through a microcomputer and a PLC panel, inputting preset grease injection time and running time of a load motor into a PLC module, and completing setting of a running time timer of the load motor and a running time timer of a plunger pump;

and (4): and pressing a test button SA, sending an instruction by the PLC to open the electromagnetic valve YV, connecting the PLC with the KM and starting the plunger pump to perform greasing. Pressing a test button TA, stopping the plunger pump and closing the electromagnetic valve;

automatic greasing of a plunger pump:

step (1): the state knob S0 is placed in an automatic mode, an automatic state indicator light L3 is lightened, the PLC operates according to a programmed program in advance, when the operation time of the load motor reaches a set value, the PLC sends an instruction to open an electromagnetic valve YV, a contactor KM is switched on and a plunger pump is started to add grease, when the operation time of the plunger pump motor reaches the set value, the PLC simultaneously sends an instruction, the electromagnetic valve is closed, and the plunger pump motor automatically stops grease injection; the PLC automatically resets a plurality of timers after finishing the motor greasing, and automatically restarts counting the running time of the load motor for preparing next greasing;

step (2): in the automatic state, if the power supply is powered off, the timing data can be automatically stored and the timing is continued when the power supply is started next time.

8. The control method of the intelligent motor control grease injection device according to claim 7, characterized in that: and after the bearing of the load motor is maintained and replaced in advance, resetting the timer through the PLC touch screen.

Technical Field

The invention belongs to the technical field of electrical maintenance of nuclear power stations, and particularly relates to a device for intelligently controlling periodic grease injection of a motor and a control method.

Background

Lubricating grease is periodically and manually added to a non-sealed motor bearing of each unit of No. 1 and No. 2 units of a certain nuclear power plant.

The motor grease injection has the problem status:

1. at present, the No. 1 and No. 2 machine sets adopt a mode of filling new grease by a manual oil gun at regular intervals, time and labor are wasted, and meanwhile, oil supplement is performed during the operation of the motor under most conditions, so that the operation risk of personnel is greatly increased;

2. the parameters of grease used by motors of different models are different, and wrong grease is easily misused due to excessive types of motors in a power plant, so that the service life of a bearing of the motor is shortened or damaged;

3. after a worker uses the oil gun, the worker is easy to have the problem that the cleaning is not in place, so that the dirt exists in the oil filling nozzle, and the normal service life of the bearing is influenced;

4. at present, a mode of manually and regularly filling new grease into the grease gun is adopted, and grease injection periods are not formulated respectively according to the actual running conditions of the motor, so that too much grease or too little grease is injected, and the protection effect on the bearing is greatly reduced.

5. Partial motors in power stations are in high-activity areas, and personnel entering the power stations during operation have great radiation risks.

Disclosure of Invention

The invention aims to provide an intelligent control motor periodic grease injection device and a control method, which can improve the operation reliability of a motor, reduce the labor consumption, protect the personal safety, more accurately grasp the grease injection time and prolong the service life of a motor bearing.

The technical scheme adopted by the invention is as follows:

an intelligent motor control grease injection device comprises a grease storage box, a plunger pump, an electromagnetic valve, a grease injection pipeline, a grease injection hose, a motor grease filling hole, a grease injection control cabinet, a power supply and a motor start-stop signal; the grease storage box is connected with one end of the plunger pump, the other end of the plunger pump is connected with a grease injection pipeline, and an electromagnetic valve is arranged on the other end of the plunger pump; the grease injection pipeline is connected to a motor grease filling hole through a grease injection hose; plunger pump, solenoid valve are connected with annotating the fat switch board respectively, annotate the fat switch board and are connected with the power, annotate the input of fat switch board simultaneously and receive the motor and open and stop the signal.

Still include control system in the notes fat switch board, control system includes primary circuit, secondary circuit.

A primary loop of the control system is connected with a 220V alternating current power supply and a switch Q0, and is further sequentially connected with a transformer T, a rectifier U and a contactor KM.

The secondary circuit is provided with a PLC power lamp L1, and a fuse FU is arranged on the secondary circuit; a switch Q1 is provided between the primary and secondary circuits.

And a secondary loop of the control system is accessed to the PLC module.

The input end of the PLC module is respectively connected with an oil pump motor running state detection switch K1, a test button starting SA, a test button stopping TA and a conversion button S0; the output end is connected with a contactor KM, an electromagnetic valve YV, an alarm lamp L2 and a start-stop lamp L3.

A control method for intelligently controlling a grease injection device by a motor comprises the following steps:

manual greasing of a plunger pump:

step 1: placing a conversion knob S0 in a non-automatic mode, switching on 220V alternating current, closing a switch Q0, converting current into 5V alternating current through a transformer T, converting the alternating current into 5V direct current through a rectifier U, switching on a contactor KM after a PLC sends out a closing instruction, and starting the grease adding of a plunger pump motor;

step 2: the switch Q1 is closed, the PLC power supply indication L1 lamp is electrified through the fuse FU, the indication lamp L1 is lighted, and meanwhile, the PLC is electrified to operate;

and step 3: entering a setting interface through a microcomputer and a PLC panel, inputting preset grease injection time and load motor running time into a PLC module, and completing the setting of a load motor running time timer, a plunger pump running time timer and other timers;

and 4, step 4: and pressing a test button SA, sending an instruction by the PLC to open the electromagnetic valve YV, connecting the PLC with the KM and starting the plunger pump to perform greasing. Pressing a test button TA, stopping the plunger pump and closing the electromagnetic valve;

automatic greasing of a plunger pump:

step 1: the state knob S0 is placed in an automatic mode, an automatic state indicator light L3 is lightened, the PLC operates according to a programmed program in advance, when the operation time of the load motor reaches a set value, the PLC sends an instruction to open an electromagnetic valve YV, a contactor KM is switched on and a plunger pump is started to add grease, when the operation time of the plunger pump motor reaches the set value, the PLC simultaneously sends an instruction, the electromagnetic valve is closed, and the plunger pump motor automatically stops grease injection; the PLC automatically resets a plurality of timers after finishing the motor greasing, and automatically restarts counting the running time of the load motor for preparing next greasing;

step 2: in the automatic state, if the power supply is powered off, the timing data can be automatically stored and the timing is continued when the power supply is started next time.

And after the bearing of the load motor is maintained and replaced in advance, resetting the timer through the PLC touch screen.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention provides a device and a method for intelligently controlling the motor to inject grease regularly, which can reduce the consumption of manpower to the maximum extent;

(2) the invention provides a device and a method for intelligently controlling the periodic grease injection of a motor, which can protect personal safety and reduce the operation risk of personnel;

(3) the invention provides a device and a method for intelligently controlling the periodic grease injection of a motor, which can prevent the irradiation risk caused by personnel entering during the operation;

(4) the invention provides a device and a method for intelligently controlling the periodic grease injection of a motor, which avoid the situation that after a worker uses a grease gun, the grease gun cannot be cleaned to cause dirt in a grease filling nozzle, and prolong the service life of a motor bearing;

(5) the invention provides a device and a method for intelligently controlling the periodic grease injection of a motor, wherein the grease injection period is respectively set according to the difference of the actual operating conditions of the motor in the way of intelligently controlling the grease injection of the motor, so that the grease injection time is more accurately mastered, the protection effect of a bearing is greatly improved, and the loss of energy and materials is reduced;

(6) the invention provides a device and a method for intelligently controlling the periodic grease injection of a motor, which reasonably add grease to ensure the operation safety of the motor and improve the operation reliability of the motor.

Drawings

FIG. 1 is a schematic structural diagram of an intelligent motor control grease injection device;

FIG. 2 is a schematic diagram of a control system in an intelligent motor control grease injection device;

in the figure: 1-grease storage box, 2-plunger pump, 3-electromagnetic valve, 4-grease injection pipeline, 5-grease injection hose, 6-motor grease filling hole, 7-grease injection control cabinet, 8-power supply and 9-motor start and stop signal.

Detailed Description

The invention provides an intelligent motor control grease injection device which is further described in detail with reference to the accompanying drawings and concrete implementation.

As shown in fig. 1, the motor intelligent control grease injection device provided by the invention comprises a grease storage box 1, a plunger pump 2, an electromagnetic valve 3, a grease injection pipeline 4, a grease injection hose 5, a motor grease filling hole 6, a grease injection control cabinet 7, a power supply 8 and a motor start-stop signal 9; the grease storage box 1 is connected with one end of a plunger pump 2, the other end of the plunger pump 2 is connected with a grease injection pipeline 4, and an electromagnetic valve 3 is arranged on the other end of the plunger pump; the grease injection pipeline 4 is connected to a motor grease filling hole 6 through a grease injection hose 5; plunger pump 2, solenoid valve 3 are connected with annotating fat switch board 7 respectively, annotate fat switch board 7 and be connected with power 8, annotate the input of fat switch board 7 simultaneously and receive motor start-stop signal 9.

The grease injection control cabinet 7 comprises a control system therein, and the control system comprises a primary loop, a main loop and a secondary loop as shown in fig. 2;

a primary loop of the control system is connected with a 220V alternating current power supply and a switch Q0, is connected with a transformer T and a rectifier U, converts the transformer T and the rectifier U into 5V direct current, and controls the grease injection monitoring device through a contactor KM;

the secondary loop is provided with a PLC power lamp L1, and a fuse FU is arranged on the secondary loop; a switch Q1 is arranged between the primary loop and the secondary loop;

a secondary loop of the control system is connected with a PLC module (the design adopts a PLC200), and the input end of the control system is respectively connected with an oil pump motor running state detection switch K1, a test button starting SA, a test button stopping TA and a conversion button S0; the output end of the electromagnetic valve is connected with a contactor KM, an electromagnetic valve YV, an alarm lamp L2 and a start-stop lamp L3;

wherein: operating state detection switch K1: monitoring the starting and stopping of an oil pump motor; test button SA: debugging and simulating the starting of a plunger pump motor; test button stop TA: simulating the stop of a plunger pump motor; shift button S0: the running state of the greasing pump is manually and automatically controlled; contactor KM: controlling the operation of the column injection pump; alarm lamp L2: PLC fault alarm; start-stop lamp L3: the running state of the motor of the oil injection pump; PLC power lamp L1: and indicating the power state of the control box.

The invention provides a control method for a device for intelligently controlling regular grease injection of a motor, which comprises the following steps:

step 1: placing a conversion knob S0 in a non-automatic mode, switching on 220V alternating current, closing a switch Q0, converting current into 5V alternating current through a transformer T, converting the alternating current into 5V direct current through a rectifier U, switching on a contactor KM after a PLC sends out a closing instruction, and starting the grease adding of a plunger pump motor;

step 2: the switch Q1 is closed, the PLC power supply indication L1 lamp is electrified through the fuse FU, the indication lamp L1 is lighted, and meanwhile, the PLC is electrified to operate.

And step 3: entering a setting interface through a microcomputer and a PLC panel, inputting preset grease injection time and load motor operation time into a PLC module, wherein the plunger pump operation time is G/V, G is 0.005D B, G is recommended filling amount (G) D of lubricating grease according to a formula: bearing outer diameter (mm) B and bearing width (mm); v is the flow rate.

And finishing the setting of a plurality of timers such as a load motor running time timer, a plunger pump running time timer and the like.

And 4, step 4: and manually greasing the plunger pump. In a non-self state, a test button SA is pressed, the PLC sends a command to open the electromagnetic valve YV, the PLC is connected with KM and starts the plunger pump to perform greasing. And (4) pressing a test button TA, stopping the plunger pump and closing the electromagnetic valve.

And 5: the plunger pump is automatically greased. The state knob S0 is placed in an automatic mode, an automatic state indicator light L3 is lightened, a PLC operates according to a programmed program, when the operation time of a load motor reaches a set value, the PLC sends an instruction to open an electromagnetic valve YV, a contactor KM is switched on and a plunger pump is started to add grease, when the operation time of the plunger pump motor reaches the set value, the PLC simultaneously sends an instruction, the electromagnetic valve is closed, and the plunger pump motor automatically stops grease injection. And the PLC automatically resets a plurality of timers after finishing the motor greasing and automatically restarts counting the running time of the load motor to prepare for next greasing.

Step 6: in the automatic state, if the power supply is powered off, the timing data can be automatically stored and the timing is continued when the power supply is started next time.

And 7: and after the bearing of the load motor is maintained and replaced in advance, resetting the timer through the PLC touch screen.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the technical scope of the present invention.