CN219181178U

CN219181178U - Overload prevention early warning intervention device of humidifier

Info

Publication number: CN219181178U
Application number: CN202223533556.6U
Authority: CN
Inventors: 刘曰腾; 王启军; 甄教平; 张兴册; 李芬; 常德雨; 陈菲菲; 李延玲; 张全帅; 郑伯典; 杨怀磊; 张虎; 张平; 付京波; 李红芳; 刘俊贤; 段好柱; 甄业林
Original assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Current assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-13
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses an overload prevention early warning intervention device of a humidifier, which comprises an ash bin, wherein the bottom of the ash bin is connected to an ash inlet of the humidifying ash unloader through an electric control ball valve and a manual ball valve; the water pipe of the humidifying ash discharger is connected to a water supply pipeline through a valve; the motor of the humidifying ash discharger is connected to a power supply through a circuit breaker and a contactor; the control loop of the contactor is connected to the power supply control box, and the control loop also comprises a current sensor, a normally closed relay and a controller, wherein the acquisition end of the current sensor is arranged on the motor main loop of the humidifying ash discharger; the controller is electrically connected with an early warning device; the normally closed end of the normally closed relay is connected to the control loop in series; and the control end of the normally closed relay is connected to the controller. The overload prevention early warning intervention device for the humidifier can intuitively know the running load condition of the humidifier motor, timely remind the humidifier motor when the running load condition reaches a load critical value, and automatically stop the humidifier motor for protection under the overload condition.

Description

Overload prevention early warning intervention device of humidifier

Technical Field

The utility model particularly relates to an overload prevention early warning intervention device for a humidifier, and belongs to the technical field of humidifier monitoring.

Background

When the gravity dust removal and ash discharge are carried out, the dust is discharged to a transport vehicle after being mixed by water through a humidifier, and then the transport vehicle is transported to a material yard, dust rising phenomenon cannot occur in both the ash discharge operation process and the transport process, when the gravity dust removal and ash discharge are carried out, firstly, the humidifying ash discharge machine is opened, then, an upper ball valve is an electric valve control switch by utilizing an operation box, when the gravity dust discharge is carried out, the upper ball valve is required to be opened by utilizing the operation box firstly, then, a lower ball valve is opened manually when the gravity dust discharge is carried out due to the existence of blast furnace pressure, the opening degree of the lower ball valve is utilized to control the size of ash flow, the ash discharge amount is controlled manually, and when the blast furnace top pressure fluctuates, the ash flow also fluctuates greatly, the water amount of the humidifier is not regulated sufficiently, a large amount of gravity dust is suddenly discharged to the humidifier when the ash discharge operation is carried out, the water or the ash discharging amount is increased and the running load condition of a motor cannot be intuitively judged, and if the lower ash ball valve is not timely regulated, the motor of the humidifier is easy to cause the motor to stop suddenly due to the large load; the ash discharging ball valve and the water valve must be immediately closed after the shutdown, and in the process of closing the ash discharging ball valve, part of dust still enters the humidifier to cause excessive amount of the ash in the humidifier, so that the humidifier cannot be restarted, the side cover of the humidifier is removed after the power failure is switched off, the accumulated ash in the humidifier is removed, the humidifier can be restarted after the carrying load of the humidifier is lightened, the labor intensity is increased after the accumulated ash of the humidifier is cleaned, and the operation difficulty is high because the operation of coordinating transportation drivers and electricians is needed; in addition, the overload operation of the motor is caused by the long-time overload operation of the humidifier motor, so that the abnormal operation of the motor is caused, and the burning loss of the motor affects the normal production.

Disclosure of Invention

In order to solve the problems, the utility model provides an overload prevention early warning intervention device for a humidifier, which can intuitively know the running load condition of the humidifier motor, timely remind the humidifier motor when the running load condition reaches a load critical value, and automatically stop the humidifier motor for protection under the overload condition.

The overload prevention early warning intervention device of the humidifier comprises an ash bin, wherein an electric control ball valve is arranged at the bottom of the ash bin; the bottom of the electric control ball valve is provided with a manual ball valve; the bottom of the manual ball valve is connected to an ash inlet of the humidifying ash discharger; the water pipe of the humidifying ash discharger is connected to a water supply pipeline through a valve; the motor of the humidifying ash discharger is connected to a power supply through a circuit breaker and a contactor; the control loop of the contactor is connected to the power supply control box, and the start button and the stop button of the control loop are embedded on the power supply control box; the control end of the electric control ball valve is connected to an on-off circuit in the power supply control box; the on-off button of the on-off circuit is arranged on the power supply control box; when discharging ash, the humidifying ash discharging machine is started by the opening button, then the opening and closing button is started, the electric control ball valve is started, finally the manual ball valve is manually started,

the system also comprises a current sensor, a normally closed relay and a controller, wherein the acquisition end of the current sensor is arranged on a motor main loop of the humidifying ash discharger; the output end of the current sensor is connected to a controller at the inner side of the power supply control box; the controller is electrically connected with an early warning device; the normally closed end of the normally closed relay is connected to the control loop in series; and the control end of the normally closed relay is connected to the controller.

When the device works, the current sensor collects working current of the humidifying ash discharger and sends the working current to the controller, after the controller obtains a current value, the controller judges the value, so as to determine whether the device works in a normal load range, when the current value exceeds the normal load range, early warning is carried out, when the current value exceeds an early warning value, active intervention is carried out, and the humidifying ash discharger is closed; during intervention, the controller gives a signal to the normally-closed relay, and the normally-closed end of the normally-closed relay breaks the control loop, so that the contactor is disconnected, and the humidifying ash discharger is closed.

Further, the early warning device is a current display meter and an audible and visual alarm which are fixed on the power supply control box; the current display meter and the audible and visual alarm are connected to the controller, the current value during operation can be fed back in real time through the current display meter, and an operator observes the value of the current meter; when the numerical value exceeds the normal range, the opening of the ash discharge valve and the water valve are timely adjusted, so that the shutdown of the humidifier caused by overload is effectively avoided, a series of work and matters caused by the later period of shutdown are avoided, the labor intensity of staff is reduced, and the normal operation of equipment is ensured; meanwhile, the sound-light alarm is used for actively alarming, when the current reaches a first warning line, the sound-light alarm is used for carrying out light alarm, an operator needs to reduce the opening of the manual ball valve and the opening of the water pipe valve, and when the current reaches a second warning line, the sound-light alarm is used for carrying out sound alarm and light alarm, and the operator needs to close the manual ball valve and the water pipe valve; until the current indication on the current display gauge drops to the set range.

Further, an encoder is arranged on a valve rod of the manual ball valve, and the valve on the water pipe comprises a manual valve and an electric opening valve; the encoder is linked with the electric opening valve through the controller, the electric opening valve is linked with the encoder, the encoder detects the rotation number and the angle of the valve rod of the manual ball valve, the controller judges the current opening of the manual ball valve according to the data collected by the encoder, and obtains the opening of the electric opening valve according to the data so as to correlate the ash discharging opening with the water adding opening, at the moment, when the fluctuation of the blast furnace top pressure causes the fluctuation of the ash flow, the manual ball valve is manually adjusted to adjust the ash flow, and the water adding amount is synchronously adapted; thereby the motor load of the humidifier is recovered to be normal.

Compared with the prior art, the overload prevention early warning intervention device for the humidifier can intuitively know the running load condition of the humidifier motor, timely remind the humidifier motor when the running load condition reaches a load critical value, and automatically stop for protection under the overload condition; by adding the overload prevention soft shutdown mode, the damage to equipment due to overload is avoided, the service life of the equipment is prolonged, and the production cost is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic diagram of a connection structure of an electronic control module according to embodiment 1 of the present utility model.

Fig. 3 is a schematic diagram of a connection structure of an electronic control module according to embodiment 2 of the present utility model.

Detailed Description

Example 1:

the overload prevention early warning intervention device of the humidifier shown in fig. 1 and 2 comprises an ash bin 1, wherein an electric control ball valve 2 is arranged at the bottom of the ash bin 1; a manual ball valve 3 is arranged at the bottom of the electric control ball valve 2; the bottom of the manual ball valve 3 is connected to an ash inlet of the humidifying ash discharger 4; the water pipe 5 of the humidifying ash discharger 4 is connected to a water supply pipeline through a valve; the motor 41 of the humidifying ash discharger 4 is connected to a power supply through a circuit breaker and a contactor; the control loop of the contactor is connected to the power supply control box 6, and the start button 7 and the stop button 8 of the control loop are embedded on the power supply control box 6; the control end of the electric ball control valve 2 is connected to an on-off circuit in the power supply control box 6; the on-off button 9 of the on-off circuit is arranged on the power supply control box; when the ash is discharged, the humidifying ash discharging machine is started through the starting button, then the starting button is started, the electric control ball valve is started, and finally the manual ball valve is manually started, and the humidifying ash discharging machine further comprises a current sensor, a normally closed relay and a controller, wherein the collecting end of the current sensor is arranged on a motor main loop of the humidifying ash discharging machine; the output end of the current sensor is connected to a controller at the inner side of the power supply control box; the controller is electrically connected with an early warning device; the normally closed end of the normally closed relay is connected to the control loop in series; and the control end of the normally closed relay is connected to the controller.

The early warning device is a current display meter 10 and an audible and visual alarm 11 which are fixed on the power supply control box 6; the ammeter 10 and the audible and visual alarm 11 are connected to a controller, the ammeter can feed back the current value during operation in real time, and an operator observes the ammeter value; when the numerical value exceeds the normal range, the opening of the ash discharge valve and the water valve are timely adjusted, so that the shutdown of the humidifier caused by overload is effectively avoided, a series of work and matters caused by the later period of shutdown are avoided, the labor intensity of staff is reduced, and the normal operation of equipment is ensured; meanwhile, the sound-light alarm is used for actively alarming, when the current reaches a first warning line, the sound-light alarm is used for carrying out light alarm, an operator needs to reduce the opening of the manual ball valve and the opening of the water pipe valve, and when the current reaches a second warning line, the sound-light alarm is used for carrying out sound alarm and light alarm, and the operator needs to close the manual ball valve and the water pipe valve; until the current indication on the current display gauge drops to the set range.

Example 1:

the overload prevention early warning intervention device of the humidifier shown in fig. 3 is characterized in that an encoder is arranged on a valve rod of the manual ball valve, and the valve on the water pipe comprises a manual valve and an electric opening valve; the encoder is linked with the electric opening valve through the controller, the electric opening valve is linked with the encoder, the encoder detects the rotation number and the angle of the valve rod of the manual ball valve, the controller judges the current opening of the manual ball valve according to the data collected by the encoder, and obtains the opening of the electric opening valve according to the data so as to correlate the ash discharging opening with the water adding opening, at the moment, when the fluctuation of the blast furnace top pressure causes the fluctuation of the ash flow, the manual ball valve is manually adjusted to adjust the ash flow, and the water adding amount is synchronously adapted; thereby the motor load of the humidifier is recovered to be normal.

The overload prevention early warning intervention device of the humidifier comprises the following testing processes:

(1) In the ash discharging process of the experimental ash discharging humidifier, an ash discharging valve is gradually opened, and the maximum load capacity of the experimental ash discharging humidifier is tested to be 30mA;

(2) According to the tested current of the ash discharging humidifier, an overload alarm is arranged on an electric element in an operation box of the humidifier, the current capacity is set within 25mA, the 22mA is reached to perform primary early warning, the 25mA is reached to perform secondary early warning, the humidifier automatically stops rotating when the 28mA is reached,

(3) The operation range of the ash discharging valve of the humidifier is determined by repeated experiments of ash discharging amount and humidifying ash discharging water adding amount in daily ash discharging operation.

The above embodiments are merely preferred embodiments of the present utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. An overload prevention early warning intervention device of a humidifier comprises an ash bin, wherein an electric control ball valve is arranged at the bottom of the ash bin; the bottom of the electric control ball valve is provided with a manual ball valve; the bottom of the manual ball valve is connected to an ash inlet of the humidifying ash discharger; the water pipe of the humidifying ash discharger is connected to a water supply pipeline through a valve; the motor of the humidifying ash discharger is connected to a power supply through a circuit breaker and a contactor; the control loop of the contactor is connected to the power supply control box, and the start button and the stop button of the control loop are embedded on the power supply control box; the control end of the electric control ball valve is connected to an on-off circuit in the power supply control box; the on-off button of the on-off circuit is arranged on the power supply control box; the method is characterized in that: the system also comprises a current sensor, a normally closed relay and a controller, wherein the acquisition end of the current sensor is arranged on a motor main loop of the humidifying ash discharger; the output end of the current sensor is connected to a controller at the inner side of the power supply control box; the controller is electrically connected with an early warning device; the normally closed end of the normally closed relay is connected to the control loop in series; and the control end of the normally closed relay is connected to the controller.

2. The humidifier overload prevention early warning intervention device according to claim 1, wherein: the early warning device is a current display meter and an audible and visual alarm which are fixed on the power supply control box; the current display meter and the audible and visual alarm are connected to the controller.

3. The humidifier overload prevention early warning intervention device according to claim 1, wherein: an encoder is arranged on a valve rod of the manual ball valve, and the valve on the water pipe comprises a manual valve and an electric opening valve; the encoder is linked with the electric opening valve through a controller.