CN210981566U

CN210981566U - Remote temperature measuring device for generator carbon brush assembly

Info

Publication number: CN210981566U
Application number: CN201922319679.1U
Authority: CN
Inventors: 林江
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-07-10
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a long-range temperature measuring device of generator carbon brush subassembly, including temperature measurement subassembly, temperature controller, P L C and host computer, temperature measurement subassembly fixed mounting be in on the carbon brush subassembly, temperature measurement subassembly's control by temperature change end pass through the temperature measurement bus with temperature controller's control by temperature change end electricity is connected, temperature controller's signal end pass through short range communication line with P L C's short range signal end electricity is connected, P L C's long range signal end pass through the long range communication line with the host computer electricity is connected, the utility model relates to a long-range temperature measuring device of generator carbon brush subassembly is through installing temperature measurement subassembly on the carbon brush subassembly, monitors the temperature of carbon brush subassembly through temperature measurement subassembly to transmit its statistics to the host computer through temperature controller and P L C, realize the temperature monitoring to the carbon brush subassembly through the host computer.

Description

Remote temperature measuring device for generator carbon brush assembly

Technical Field

The utility model relates to a generator field especially relates to a long-range temperature measuring device of generator carbon brush subassembly.

Background

At present, the basic industry of China develops rapidly, large-scale equipment such as a hydroelectric generator, a turbogenerator, a wind driven generator, a motor and the like play an important role in the industrial field, and the normal operation of the large-scale equipment is related to the safety of a power grid. The carbon brushes and the brush holder components which are in contact type and can transmit electric energy in a sliding mode are used in the equipment, and the components play an important role in continuously, stably and safely operating the equipment.

The generator and the motor need to transmit exciting current through the carbon brushes, the brush holders and other components to realize kinetic energy and electric energy conversion, the components are in a large-current operation condition for a long time, once a certain or part of the carbon brushes and the brush holders are not found in time due to high temperature, the temperature continues to rise and exceeds a limit value, the conditions of burning out the carbon brushes, the brush holders, the slip rings and other equipment occur, and the serious consequence of accident shutdown is caused. Similar accidents occur at home and abroad in the following years, and certain economic loss and social negative influence are brought to enterprises.

Therefore, the equipment uses carbon brushes, brush holders and other components which are in contact type and slide to transmit electric energy, and the temperature monitoring of the equipment is particularly important. At present, the traditional monitoring method is a manual mode, and equipment such as an infrared thermometer and the like is used for manually detecting and recording data regularly, so that the fault is not easy to find and analyze the data in time. There is the case of installation infrared on-line monitoring device, but infrared on-line temperature measuring device has the equipment volume greatly itself, and mounted position and angle are restricted, lead to the inaccurate or unable problem of installing of temperature measurement.

The disadvantages are as follows:

the automation level of the equipment operation monitoring is low.

The manual detection is generally carried out periodically, the time interval is large, and a monitoring time interval blind area can occur. If the temperature of the carbon brush and the brush holder component is high during undetected periods, the carbon brush and the brush holder component cannot be found in time, and the instantaneity is poor.

The recorded temperature data needs manual analysis to judge whether the temperature data is in a qualified range, and the efficiency is low.

Some equipment has special positions of a part of carbon brushes and brush holders due to manufacturing and installation reasons, and the running temperature of the equipment cannot be manually detected, so that great potential safety hazards exist.

The infrared online monitoring device is installed, but the problems that the device is large in size, and the installation position and the angle are limited, so that temperature measurement is inaccurate or the device cannot be installed exist.

The reason for the above-mentioned shortcomings of the conventional technologies is mainly that the conventional concepts do not pay much attention to improving the automation level of the small devices or have not found a better solution for online monitoring. Secondly, the development level of the automation elements in China is slow, and the integration and application of the automation elements in the actual production is not increased in the industry, so that the safe operation level of equipment is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a long-range temperature measuring device of generator carbon brush subassembly just in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a remote temperature measuring device for a carbon brush assembly of a generator comprises a temperature measuring assembly, a temperature controller, a P L C and an upper computer, wherein the temperature measuring assembly is fixedly installed on the carbon brush assembly, a temperature control end of the temperature measuring assembly is electrically connected with a temperature control end of the temperature controller through a temperature measuring bus, a signal end of the temperature controller is electrically connected with a short-range signal end of the P L C through a short-range communication line, and a remote signal end of the P L C is electrically connected with the upper computer through a remote communication line;

the temperature measurement component comprises a carbon brush and a brush holder, the temperature measurement component comprises a first temperature measurement element, a second temperature measurement element and two temperature measurement leads, a transverse hole is formed in the end face of the upper side face of a shell of the brush holder, the first temperature measurement element is fixedly arranged in the transverse hole, a signal end of the first temperature measurement element is connected with the temperature measurement bus through one of the temperature measurement leads, a deep hole is formed in the tail of the carbon brush, the second temperature measurement element is fixedly arranged in the deep hole, and the signal end of the second temperature measurement element is connected with the temperature measurement bus through the other one of the temperature measurement leads.

Specifically, the number of temperature measurement subassembly is a plurality of, and is a plurality of the temperature measurement subassembly is installed respectively a plurality of the generator on the carbon brush subassembly, the temperature measurement subassembly with the carbon brush subassembly all is provided with corresponding serial number that corresponds.

Preferably, the first temperature measuring element is fixedly connected with the brush holder through a high-temperature-resistant bonding material, the second temperature measuring element is fixedly connected with the carbon brush through a high-temperature-resistant bonding material, and the first temperature measuring element and the second temperature measuring element are thermal resistors, thermocouples or optical fiber temperature measuring sensors.

The beneficial effects of the utility model reside in that:

the utility model relates to a long-range temperature measuring device of generator carbon brush subassembly is through installing temperature measurement subassembly on carbon brush subassembly, monitor the temperature of carbon brush subassembly through temperature measurement subassembly to transmit its statistics to the host computer through temperature controller and P L C, realize the temperature monitoring to carbon brush subassembly through the host computer;

and the continuity, the real-time performance, the historical data trend analysis and the early warning of faults of the temperature data monitoring record can be realized. Because the automatic element is small, and the installation is convenient, also can monitor the special part temperature of mounted position, accomplish the temperature and control in real time, the discovery problem is in time handled, can improve equipment operation automation level and security greatly, avoids the emergence of equipment accident.

Drawings

Fig. 1 is a structural frame body of a remote temperature measuring device for a carbon brush assembly of a generator according to the present invention;

FIG. 2 is a schematic structural view of a brush holder according to the present invention;

fig. 3 is a schematic structural view of the carbon brush of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, the utility model relates to a long-range temperature measuring device of generator carbon brush subassembly, including temperature measuring subassembly, temperature controller, P L C and host computer, temperature measuring subassembly fixed mounting is on the carbon brush subassembly, the temperature control end of temperature measuring subassembly passes through the temperature measurement bus and is connected with the temperature control end electricity of temperature controller, the signal end of temperature controller passes through short range communication line and is connected with the short range signal end electricity of P L C, the long range signal end of P L C passes through long range communication line and is connected with the host computer electricity;

meanwhile, the temperature controller can upload all temperature data to P L C in a short-range communication mode, the P L C receives all temperature signals, and the P L C transmits the temperature data to an upper computer at a remote position and then stores, arranges and analyzes the data through modeling and programming, so that the remote monitoring of the temperature of the carbon brush 1 and the brush holder 2 is realized.

Meanwhile, modeling, detecting, programming and the like are carried out on files by using P L C and an upper computer, and the P L C is programmed for the expanded function of the device, so that the temperature of the temperature measuring element can be processed by a person skilled in the art without further description.

As shown in fig. 2 and 3, the temperature measuring component includes a carbon brush 1 and a brush holder 2, the temperature measuring component includes a first temperature measuring element 6, a second temperature measuring element 5 and two temperature measuring leads 7, a transverse hole 4 is formed in an end face of an upper side face of a shell of the brush holder 2, the first temperature measuring element 6 is fixedly attached to the inner portion of the upper side face of the shell of the brush holder 2, a signal end of the first temperature measuring element 6 is electrically connected with the temperature measuring bus through one of the temperature measuring leads 7, a deep hole 3 is formed in a tail portion of the carbon brush 1, the second temperature measuring element 5 is fixedly arranged in the deep hole 3, and a signal end of the second temperature measuring element 5 is electrically connected with the temperature measuring bus through. The lengths of the deep hole 3 and the transverse hole 4 are determined according to the carbon brush and the brush holder monitoring part, and the aperture is equal to the diameter of the temperature measuring lead 7.

The number of temperature measurement subassembly is a plurality of, and a plurality of temperature measurement subassemblies are installed respectively on a plurality of carbon brush subassemblies of generator, and temperature measurement subassembly and carbon brush subassembly all are provided with corresponding serial number that corresponds.

Numbering each carbon brush 1 and each brush holder 2 of the generator or the motor according to the direction, numbering each carbon brush 1 and each brush holder 2 on the picture of the upper computer, and numbering the carbon brushes 1 and the brush holders 2 on site one by one according to a point table. When the temperature of a certain carbon brush 1 and a brush holder 2 is abnormal in the running process of the unit, the actual position of the carbon brush 1 with the abnormal temperature can be quickly found and processed through the position number of the carbon brush 1 with the abnormal temperature on a simulation diagram.

The first temperature measuring element 6 is fixedly connected with the brush holder 2 through a high-temperature resistant bonding material or a hardware buckle, the second temperature measuring element 5 is fixedly connected with the carbon brush 1 through a high-temperature resistant bonding material or a hardware buckle, and the first temperature measuring element 6 and the second temperature measuring element 5 are temperature measuring elements such as a thermal resistor, a thermocouple or an optical fiber temperature measuring sensor.

In order to increase the temperature conductivity of the brush holder 2 and the carbon brush 1 and the position for installing the temperature measuring element, the part of the original structure of the brush holder 2, which needs to be provided with the temperature measuring element, is designed to be thickened by about 3mm, a hole is formed for embedding and installing the temperature measuring element, the temperature measuring element is fixed through a high-temperature resistant bonding material or a hardware buckle, and the length of a lead of the temperature measuring element is determined according to actual requirements. The number and the arrangement of the temperature measuring elements of the brush holder 2 can be designed and embedded according to the actual volume and the temperature concerned position of the brush holder 2.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The remote temperature measuring device for the carbon brush assembly of the generator is characterized by comprising a temperature measuring assembly, a temperature controller, a P L C and an upper computer, wherein the temperature measuring assembly is fixedly arranged on the carbon brush assembly, a temperature control end of the temperature measuring assembly is electrically connected with a temperature control end of the temperature controller through a temperature measuring bus, a signal end of the temperature controller is electrically connected with a short-range signal end of the P L C through a short-range communication line, and a remote signal end of the P L C is electrically connected with the upper computer through a remote communication line;

2. The remote temperature measuring device for the carbon brush assembly of the generator according to claim 1, characterized in that: the number of the temperature measurement assemblies is multiple, the temperature measurement assemblies are respectively installed on the carbon brush assemblies of the generator, and the temperature measurement assemblies and the carbon brush assemblies are provided with corresponding numbers.

3. The remote temperature measuring device for the carbon brush assembly of the generator according to claim 1, characterized in that: the first temperature measuring element is fixedly connected with the brush holder through a high-temperature-resistant bonding material or a hardware buckle, the second temperature measuring element is fixedly connected with the carbon brush through a high-temperature-resistant bonding material or a hardware buckle, and the first temperature measuring element and the second temperature measuring element are thermal resistors, thermocouples or optical fiber temperature measuring sensors.