CN219736561U - Important auxiliary engine self-balancing unit of thermal power generating unit - Google Patents

Abstract

The utility model belongs to the technical field of testing of mechanical parts, and particularly relates to a self-balancing device of an important auxiliary machine of a thermal power generating unit, which comprises the following components: the motor driving shaft, the auxiliary machine driving shaft and the coupler are connected with each other; a speed sensor for monitoring the rotating speed of the rotor of the equipment is arranged on the bearing seat shell of the driving shaft; fixing a reflector on the arc surface of the auxiliary machine rotor; a sensor bracket is fixed on a motor driving shaft and is used for installing a key phase sensor for acquiring relevant information of a rotor. During operation, the sensor uploads information to the data acquisition box, and then the data is uploaded to the auxiliary self-balancing system. And obtaining the balance mass and angle data required to be added by the rotor after the system calculates, and sending the result to a server for operation maintenance personnel to check implementation measures. The utility model solves the problems that the existing equipment lacks a corresponding data processing system between sensors, only can monitor the magnitude of numerical values, cannot perform online dynamic balance processing and cannot fully utilize data.

Description

Important auxiliary engine self-balancing unit of thermal power generating unit

Technical Field

The utility model belongs to the technical field of testing of mechanical parts, and particularly relates to a self-balancing device for important auxiliary machinery of a thermal power generating unit.

Background

With the gradual popularization of deep peak shaving in the thermal power generation industry, the safety operation of the generator set equipment is more challenging, particularly important auxiliary machines in a plant are operated in a deviation design working condition for a long time, the operation working condition is relatively bad, part of equipment is in a working environment with high temperature and a large amount of dust, the equipment vibration problem is more likely to occur, and the rotor balance problem is particularly remarkable.

In the prior art, only a speed sensor is arranged on a fan bearing, and the speed sensor only monitors the vibration amplitude of the bearing, monitors the rotating speed and the rotating speed of a rotor of equipment, so that the production requirement of the current stage is not met.

In summary, the problems in the prior art mainly include:

(1) The lack of bond phase sensor monitoring makes it impossible to monitor vibration signature data.

(2) The sensors on the existing equipment are not provided with corresponding data processing systems, only the numerical value can be monitored, the data are not fully utilized, and online dynamic balance processing cannot be performed.

Disclosure of Invention

The utility model aims to provide a self-balancing device for important auxiliary machines of a thermal power generating unit, which solves the problems that a corresponding processing data system is lacking between sensors in the existing equipment, only the magnitude of a numerical value can be monitored, online dynamic balance processing can not be performed, and data can not be fully utilized.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the self-balancing device for the important auxiliary machine of the thermal power generating unit comprises a motor driving shaft, an auxiliary machine driving shaft, a coupler and an auxiliary machine self-balancing system, wherein the coupler is connected with the motor driving shaft and the auxiliary machine driving shaft; the auxiliary machine driving shaft is sequentially sleeved with an auxiliary machine driving end bearing and an auxiliary machine rotor from left to right; the auxiliary engine drive end bearing below is filled up and is had the bearing frame, its characterized in that:

the bearing seat shell is provided with a speed sensor which is used for monitoring the vibration amplitude of the bearing and the rotating speed of a rotor of the equipment;

the arc surface of the auxiliary machine rotor is fixed with a reflector;

a sensor bracket is fixed on the motor driving shaft, a key phase sensor is arranged on the sensor bracket, the key phase sensor sends out signals, the signals are reflected back to the sensor through a reflection sheet to generate voltage signals, and then the signals are converted into rotor rotation speed information and vibration phase information;

the speed sensor and the key phase sensor upload the acquired information to a data acquisition box, the data acquisition box uploads the stored data to the auxiliary self-balancing system, and the auxiliary self-balancing system acquires and calculates the data to obtain the balance quality and angle data of the rotor which need to be increased, and then sends the calculation result to the server.

Further, the length of the reflecting sheet is 5cm, and the width is 1cm.

Further, the speed sensor and the key phase sensor are connected in a wired communication mode.

Further, the key phase sensor is a laser pulse sensor or an eddy current sensor.

Further, the height difference between the key phase sensor and the motor driving shaft is 5-10cm, so that the error of the rotor related information is reduced.

Further, the auxiliary self-balancing system and the server communicate in a wireless communication mode.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device is characterized in that the reflecting sheet is fixed on the arc surface of the auxiliary machine rotor and the key phase sensors comprising the support are fixed on the motor driving shaft, so that signals emitted by the sensors generate voltage signals after the signals are reflected back to the sensors through the reflecting sheet each time, and then the signals are converted into rotor rotation speed information and vibration phase information, so that the balance state of the auxiliary machine rotor is monitored in real time, the position of the reflecting sheet of the same rotor is unchanged during equipment maintenance, and the function of monitoring the balance state change of the whole life cycle of the rotor is realized.

2. The device can upload the data of the sensors to the data acquisition box after being collected by installing the speed sensor on the bearing seat and the key phase sensor comprising the bracket, and finally uniformly upload the stored data to the auxiliary self-balancing system through the data acquisition box. The system calculates that the rotor needs to be additionally provided with balance quality data and additional angle data through data acquisition and then sends the result to the server, the result is subjected to online dynamic balance calculation according to field requirements by utilizing an auxiliary self-balancing system, a dynamic balance scheme in the current rotor balance state is obtained, the balance calculation can be continued after the scheme is implemented, the corresponding vibration problem is timely processed through repeated dynamic balance adjustment, the safe and stable operation of equipment is ensured, and the safety and economic benefit are improved.

Drawings

FIG. 1 is a schematic diagram of the overall device installation of the present utility model;

FIG. 2 is a schematic diagram of a key phase sensor installation of the present utility model, wherein (a) is a front view of a reflector and an auxiliary machine rotor, (b) is a side view of the reflector and the auxiliary machine rotor, and (c) is a schematic diagram of a sensor bracket and a key phase sensor;

FIG. 3 is a schematic view of a speed sensor installation of the present utility model;

FIG. 4 is a flow chart of the structural system of the present utility model.

In the figure: 1. a motor drive shaft; 2. an auxiliary machine driving shaft; 3. a coupling; 4. auxiliary machine driving end bearings; 5. an auxiliary machine rotor; 6. a bearing seat; 7. a speed sensor; 8. a reflective sheet; 9. a sensor holder; 10. a key phase sensor; 11. a data acquisition box; 12. an auxiliary self-balancing system; 13. and a server.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

The self-balancing device for the important auxiliary machine of the thermal power generating unit comprises a motor driving shaft 1, an auxiliary machine driving shaft 2 and a coupler 3, wherein the coupler 3 is connected with the motor driving shaft 1 and the auxiliary machine driving end 2; an auxiliary machine driving end bearing 4 and an auxiliary machine rotor 5 are sleeved on the auxiliary machine driving shaft 2 in sequence from left to right, and a speed sensor 7 for monitoring the vibration amplitude of the bearing and the rotating speed of a rotor of the monitoring equipment is arranged on the housing of a bearing seat 6; a reflection sheet 8 is fixed on the arc surface of the auxiliary machine rotor 5; a sensor bracket 9 is fixed on the motor driving shaft 1, a key phase sensor 10 is arranged on the sensor bracket 9, so that the key phase sensor 10 generates a voltage signal after reflecting the signal back to the sensor through a reflector 8 after sending out the signal each time, and then the signal is converted into rotor rotation speed information and vibration phase information;

the speed sensor 7 and the key phase sensor 10 upload the acquired information to the data acquisition box 11, then the data acquisition box 11 uploads the stored data to the auxiliary self-balancing system 12, the system acquires the data and calculates to obtain the balance quality and angle data of the rotor which need to be increased, and then the calculation result is sent to the server 13. These calculations allow the relevant service personnel to view and carry out the corresponding measures.

The specific steps of this embodiment are as follows:

(1) Sensor mounting

The coupler 3 is responsible for connecting the motor driving shaft 1 and the auxiliary machine driving end 2; an auxiliary machine driving end bearing 4 and an auxiliary machine rotor 5 are sleeved on the auxiliary machine driving shaft 2 in sequence from left to right;

a bearing seat 6 is arranged below the auxiliary machine driving end bearing 4, a speed sensor 7 is arranged on the outer shell of the bearing seat 6, the speed sensor 7 converts electromagnetic induction change into current through an electromagnetic coil, and then the current is converted into electromotive force, so that the motion state of an object can be detected;

the arc surface of the auxiliary machine rotor 5 is fixed with a reflector 8, and the installation height of a key phase sensor 10 matched with the reflector is 5-10cm away from the motor driving shaft 1 and is consistent with the direction of the speed sensor 7; the key phase sensor 10 generates a voltage signal after reflecting the signal back to the sensor through the reflecting sheet 8 after sending the signal each time, and the voltage signal is used for marking annotation data, indicating the position of the shaft in each rotation period, so as to receive rotor rotation speed information and vibration phase information;

(2) Data uploading and processing

The data collected by the speed sensor 7 and the key phase sensor 10 are sent to a data collection box 11;

the data collection box 11 uniformly sends data to the auxiliary self-balancing system 12, the balance mass and the angle of the rotor to be additionally arranged are calculated through system balance, the final calculation result is sent to the server 13 for release, and the relevant operation maintenance personnel can finally check and implement.

As an example, the key phase sensor 10 may use an eddy current sensor or a laser pulse sensor, so that the size of the reflection sheet 8 and the type and installation method of the key phase sensor 10 are not fixed.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides an important auxiliary engine self-balancing unit of thermal power generating unit, includes motor drive axle (1), auxiliary engine drive axle (2), shaft coupling (3) and auxiliary engine self-balancing system (12), shaft coupling (3) connect motor drive axle (1) and auxiliary engine drive axle (2); an auxiliary machine driving end bearing (4) and an auxiliary machine rotor (5) are sleeved on the auxiliary machine driving shaft (2); bearing frame (6) are filled up to auxiliary engine drive end bearing (4) below, its characterized in that:

a speed sensor (7) is arranged on the housing of the bearing seat (6), and the speed sensor (7) is used for monitoring the vibration amplitude of the bearing and the rotating speed of a rotor of the equipment;

the arc surface of the auxiliary machine rotor (5) is fixed with a reflector (8);

a sensor bracket (9) is fixed on the motor driving shaft (1), a key phase sensor (10) is arranged on the sensor bracket (9), the key phase sensor (10) sends out signals, the signals are reflected back to the sensor through a reflecting sheet (8) to generate voltage signals, and then the signals are converted into rotor rotation speed information and vibration phase information;

the speed sensor (7) and the key phase sensor (10) upload the acquired information to the data acquisition box (11), the data acquisition box (11) uploads the stored data to the auxiliary self-balancing system (12), and the auxiliary self-balancing system (12) acquires the data and calculates to obtain the balance quality and angle data of the rotor which need to be increased, and then sends the calculation result to the server (13).

2. The thermal power generating unit important auxiliary engine self-balancing device according to claim 1, wherein: the length of the reflecting sheet (8) is 5cm, and the width is 1cm.

3. The thermal power generating unit important auxiliary engine self-balancing device according to claim 1, wherein: the speed sensor (7) and the key phase sensor (10) are connected in a wired communication mode.

4. The thermal power generating unit important auxiliary engine self-balancing device according to claim 3, wherein: the key phase sensor (10) is a laser pulse sensor or an eddy current sensor.

5. The thermal power generating unit important auxiliary engine self-balancing device according to claim 1, wherein: the key phase sensor (10) and the motor driving shaft (1) have a height difference of 5-10cm and are used for reducing rotor related information errors.

6. The thermal power generating unit important auxiliary engine self-balancing device according to claim 1, wherein: the auxiliary self-balancing system (12) and the server (13) are in wireless communication.