Motor temperature detection and alarm device for coking crushing production

Abstract

A motor temperature detection and alarm device for coking and crushing production belongs to the technical field of crushing mechanical equipment and comprises a motor, a temperature detection element is arranged on an inner stator winding of the motor and connected with a digital display meter, and the digital display meter is mounted in a field operation cabinet and displays current temperature information; the digital display meter is connected with the alarm module, and when the temperature of the motor exceeds a set temperature threshold value, an alarm device in the alarm module is electrified to work to remind field operators of switching operation and timely contact maintenance personnel for field maintenance, so that the protection of equipment is enhanced, the failure rate of the equipment is reduced, and meanwhile, the production safety is also ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of crushing mechanical equipment, and in particular relates to a motor temperature detection and alarm device for coking crushing production. Background Art

[0002] The status monitoring of equipment is very important in the industrial production process. For example, in the coking pre-crushing production process, the temperature detection of the motor is related to the normal coking production and the normal use of the motor equipment. At present, the stator winding temperature data at the coking pre-crushing production site will be directly transmitted to the computer terminal of the centralized control center, where the corresponding temperature value will be displayed without an alarm function; when the motor temperature rises, the monitoring personnel of the centralized control center may not find the abnormal condition of the equipment in time. If it cannot be handled in time, the motor temperature may be too high, causing damage to the motor equipment.

[0003] The prior art discloses a real-time temperature monitoring and protection system for a three-phase asynchronous motor of a die-casting machine with publication number CN205565695U. The system monitors the temperature of the three-phase asynchronous motor through temperature detection elements, control display elements and alarm components. For coking production, the system has a relatively single temperature detection point and a complex system, which is not conducive to safe and stable production. In addition, by relying on a contactor to control motor overtemperature, there may be problems with the contactor itself failing or responding late. Utility Model Content

[0004] The technical problem solved by the utility model is to overcome the problem of motor temperature detection and alarm reminder in the coking pre-crushing production process, and provide a motor temperature detection and alarm device for coking crushing production.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model discloses a motor temperature detection and alarm device for coking and crushing production, comprising a motor, wherein the motor comprises a stator winding, a temperature detection element is connected to the stator winding, the temperature detection element is connected to a digital display, and the digital display is connected to a power supply I and a temperature alarm module via a wiring terminal; the temperature alarm module comprises a normally open contact KA1, a power supply II and an alarm device connected thereto; a temperature threshold is provided in the digital display, and when the temperature detection element detects that the temperature exceeds the temperature threshold, the normally open contact KA1 is closed, and the alarm device is powered to start an alarm.

[0007] The utility model also comprises a crusher, which is connected to the rotor end of the motor through a transmission shaft. A bearing seat is arranged between the motor and the crusher, and the bearing seat is used for supporting the transmission shaft.

[0008] The temperature detection element uses a thermistor, which converts the temperature signal of the stator winding into a resistance signal and sends it to the digital display.

[0009] The alarm device uses an audible and visual alarm.

[0010] A mesh shell is arranged on the outside of the sound and light alarm.

[0011] Power supply I and power supply II use 220V AC power supply.

[0012] The utility model also comprises an on-site operation box, in which the digital display meter is installed.

[0013] The utility model has the following beneficial effects:

[0014] During the coking production process, the motor temperature monitoring system with an alarm device plays a good role in promoting equipment protection and production safety. When the motor temperature is too high, the sound and light alarm will sound, reminding the on-site operator to reverse the machine in time and notify the maintenance personnel to arrive at the site for maintenance in time, thereby reducing the equipment failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model;

[0016] Figure 2 This is the circuit diagram of the utility model.

[0017] Among them: 1. Crusher; 2. Bearing seat; 3. Transmission device; 4. Motor; 5. Temperature detection element; 6. Digital display; 7. Alarm device; 8. Mesh shell; 9. On-site operation box. DETAILED DESCRIPTION

[0018] like Figure 1 to Figure 2 As shown, the temperature detection and alarm device for a motor used in coking and crushing production described in the utility model comprises a motor 4, wherein the motor 4 comprises a stator winding, a temperature detection element 5 is connected to the stator winding, the temperature detection element 5 is connected to a digital display 6, and the digital display 6 is connected to a power supply I and a temperature alarm module through a wiring terminal; the temperature alarm module comprises a normally open contact KA1, a power supply II and an alarm device 7 connected thereto; a temperature threshold is provided in the digital display 6, and when the temperature detection element 5 detects that the temperature exceeds the temperature threshold, the normally open contact KA1 is closed, and the alarm device 7 is electrically activated to alarm.

[0019] The utility model further comprises a crusher 1 , which is connected to a rotor end of a motor 4 via a transmission shaft 3 , and a bearing seat 2 is provided between the motor 4 and the crusher 1 , and the bearing seat 2 is used to support the transmission shaft 3 .

[0020] The temperature detection element 5 is a thermistor, which converts the temperature signal of the stator winding into a resistance signal and sends it to the digital display 6.

[0021] The alarm device 7 adopts an audible and visual alarm.

[0022] A mesh shell 8 is arranged outside the sound and light alarm.

[0023] Power supply I and power supply II use 220V AC power supply.

[0024] The utility model further comprises an on-site operation box 9 , in which the digital display meter 6 is installed.

[0025] Specifically, taking the coking pre-crushing production as an example, a temperature detection element 5 with corresponding parameters is selected according to the voltage, current and power parameters of the motor, and the temperature detection element 5 is connected in series with the stator winding of the motor 4, that is, the temperature detection element 5 is connected between the two coils in the motor 4; the temperature detection element 5 adopts a thermistor, and the resistance value of the thermistor changes with the temperature of the stator winding, and its temperature signal is converted into a resistance signal and sent to the digital display 6; the digital display is installed in the on-site operation box 9, and the on-site staff can directly read the current temperature of the stator winding through the digital display 6; the digital display 6 also sets a temperature threshold value of 100 degrees Celsius. When the detected temperature is greater than the threshold, the normally open contact KA1 in the alarm module is closed, and the sound and light alarm is energized to work, reminding the staff to reverse the machine in time and notify the maintenance personnel to arrive at the site for maintenance in time, thereby reducing the equipment failure rate, ensuring safe production and extending the service life of the motor 4.

Claims

1. A motor temperature detection and alarm device for coking and crushing production, comprising a motor (4), characterized in that: The motor (4) comprises a stator winding, a temperature detection element (5) is connected to the stator winding, the temperature detection element (5) is connected to a digital display (6), and the digital display (6) is connected to a power supply I and a temperature alarm module via a wiring terminal; the temperature alarm module comprises a normally open contact KA1, a power supply II and an alarm device (7) connected to each other; The digital display (6) is provided with a temperature threshold. When the temperature detected by the temperature detection element (5) exceeds the temperature threshold, the normally open contact KA1 is closed, and the alarm device (7) is energized to start the alarm.

2. The motor temperature detection and alarm device for coking and crushing production according to claim 1 is characterized in that: It also comprises a crusher (1), wherein the crusher (1) is connected to the rotor end of a motor (4) via a transmission shaft (3), and a bearing seat (2) is provided between the motor (4) and the crusher (1), wherein the bearing seat (2) is used to support the transmission shaft (3).

3. The motor temperature detection and alarm device for coking and crushing production according to claim 1 is characterized in that: The temperature detection element (5) is a thermistor, which converts the temperature signal of the stator winding into a resistance signal and sends it to the digital display (6).

4. The motor temperature detection and alarm device for coking and crushing production according to claim 1 is characterized in that: The alarm device (7) adopts an audible and visual alarm.

5. The motor temperature detection and alarm device for coking and crushing production according to claim 4 is characterized in that: A mesh shell (8) is provided outside the sound and light alarm.

6. The motor temperature detection and alarm device for coking and crushing production according to claim 1 is characterized in that: The power supply I and the power supply II adopt 220V AC power supply.

7. The motor temperature detection and alarm device for coking and crushing production according to claim 1 is characterized in that: It also comprises an on-site operation box (9), wherein the digital display meter (6) is installed in the on-site operation box (9).

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