CN212033955U - Ring fire alarm device for generator excitation slip ring - Google Patents
Ring fire alarm device for generator excitation slip ring Download PDFInfo
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- CN212033955U CN212033955U CN202021016508.8U CN202021016508U CN212033955U CN 212033955 U CN212033955 U CN 212033955U CN 202021016508 U CN202021016508 U CN 202021016508U CN 212033955 U CN212033955 U CN 212033955U
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- slip ring
- temperature monitor
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Abstract
A ring fire alarm device for a generator excitation slip ring is matched with a generator slip ring sleeved on an excitation end of a generator rotor shaft for use and comprises a temperature monitor, a support frame body, a digital display instrument and an alarm mechanism; the support frame body is arranged on a platform of the generator rotor, and the temperature monitor is arranged on the support frame body and is positioned right above the generator slip ring; the temperature monitor is connected with a digital display instrument arranged outside the generator, the digital display instrument is connected with a DCS control system, and the DCS control system is connected with the alarm mechanism. The alarm device is simple in structure, low in cost and good in effect, key parts such as the slip ring and the commutator are monitored in real time without interruption, corresponding ranges such as early warning values and alarm values are made through real-time temperature monitoring values, early warning is carried out in advance through temperature real-time transmission, operators can make fault elimination measures in the shortest time, and safety and operation stability are improved.
Description
Technical Field
The utility model relates to a turbo generator and collecting ring powered device safety monitoring equipment, specifically speaking are generator excitation sliding ring fire alarm device.
Background
In recent years, under the condition that the insulation technology and the manufacturing level are continuously improved, the capacity of a generator set is continuously improved, the exciting current of a rotor of a generator is continuously improved, and a means for monitoring the temperature rise exceeding caused by the abnormal exciting current and the friction of a contact surface of a carbon brush (including brushless excitation) is particularly prominent and important. The accidents of the generator caused by abnormal power receiving of the slip ring and the commutator frequently occur in recent years, the problems mainly occur in the slip ring and commutator ring fire accidents caused by direct current short circuit overheat caused by the overheating of the surface of the slip ring or the insulation failure between commutator segments and the like due to poor contact between a carbon brush and a slip ring contact surface, the fragmentation of the carbon brush, the uneven current of the carbon brush and the like when the collector ring or the commutator of the generator rotates. The slip ring overheating or commutator overheating accident is a multiple accident of a modern generator set, the load of the generator set is reduced to eliminate defects if the slip ring overheating or commutator overheating accident is small, serious slip rings or commutators are forced to quit operation due to ring fire burning, and the later needs to be subjected to a complicated repairing process. At present, the method is completed only by means of regular maintenance, operation inspection and the like, but the regular maintenance needs complex inspection and monitoring procedures, so that the efficiency is low, time and labor are wasted, the working strength of inspection personnel is high, the repeated careful monitoring is needed, once the faults occur, the temperature rise of equipment is high, the equipment is not easy to find, the reaction treatment time is short, and the economic operation of a unit is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to avoid the occurence of failure that mentions among the background art and can send the early warning in advance to in time eliminate unsafe hidden danger, reduce the accident loss, the utility model provides a generator excitation sliding ring fire alarm device, the device can carry out incessant real-time supervision to key positions such as sliding ring, commutator, makes corresponding scope such as early warning value, alarm value through real-time temperature monitoring value, carries out the early warning in advance through the real-time conveying of temperature, can make the runner make the trouble elimination measure in the shortest time.
In order to realize the purpose of the invention, the utility model adopts the technical scheme that: a ring fire alarm device for a generator excitation slip ring is matched with a generator slip ring sleeved on an excitation end of a generator rotor shaft for use and comprises a temperature monitor, a support frame body, a digital display instrument and an alarm mechanism;
the support frame body is arranged on a platform of the generator rotor, and the temperature monitor is arranged on the support frame body and is positioned right above the generator slip ring;
the temperature monitor is connected with a digital display instrument arranged outside the generator, the digital display instrument is connected with a DCS control system, and the DCS control system is connected with the alarm mechanism.
The temperature monitor adopts a German European common type infrared temperature measuring probe CT-SR.
The support frame body is a dust shield arranged outside the generator rotor; the temperature monitor is arranged on the top of the dust shield and is vertically aligned with the surface of the generator slip ring below the temperature monitor.
The supporting frame is a vertically arranged frame body and comprises a cross beam and an upright post, the lower end of the upright post is arranged on the platform through a connecting piece, and two ends of the cross beam are fixedly connected with the upper end of the upright post respectively; the cross beam is arranged above the rotating shaft of the generator in a spanning mode, and the temperature monitor is installed on the cross beam and is aligned with the upper surface of the generator slip ring below the temperature monitor.
The alarm mechanism comprises a sound alarm and/or a light alarm.
The temperature monitor is connected with the digital display instrument through a wire; the digital display instrument is in wired connection with the DCS control system; the DCS control system is connected with the alarm mechanism in a wired mode.
Compare with current artificial monitoring of patrolling, the utility model discloses an alarm device of this kind simple structure, it is with low costs, effectual carries out incessant real-time supervision to key positions such as sliding ring, commutator, makes corresponding scope such as early warning value, alarm value through real-time temperature monitoring value, carries out the early warning in advance through the real-time conveying of temperature, can make the operation personnel make the fault elimination measure at the shortest time, improves the stability of security and operation.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of another embodiment of the present invention.
In the figure: the generator rotor shaft excitation end 1, the generator slip ring 2, the dust hood 3, the temperature monitor 4, the generator rotor fan 5, the platform 6, the digital display instrument 7, the DCS control system 8, the support body 9.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The generator rotor shaft 1 is sleeved with a generator rotor fan 5, and two sides of the generator rotor fan are respectively sleeved with a generator slip ring 2. The utility model discloses a this kind of generator excitation sliding ring fire alarm device uses with the cooperation of the generator sliding ring 2 of suit on generator rotor shaft excitation end, mainly used monitoring generator sliding ring's operating temperature, including temperature monitor 4, support body, digital display instrument 7 and alarm mechanism.
The support frame body is arranged on a platform 6 of a generator rotor, and the temperature monitor 4 is arranged on the support frame body and is positioned right above a generator slip ring and vertically aligned with the generator slip ring to be monitored. The temperature monitor is connected with a digital display instrument arranged outside the generator, the digital display instrument is connected with a DCS control system, and the DCS control system is connected with the alarm mechanism. The DCS control system can set an alarm value according to the data transmitted by the detector and establish an alarm system.
The temperature monitor adopts infrared temperature measuring probes, preferably German European style infrared temperature measuring probes CT-SR, in the embodiment, the number of the temperature monitors corresponds to the number of the slip rings of the generator, and the two temperature monitoring probes vertically correspond to the positive slip ring and the negative slip ring on two sides of the fan of the generator rotor respectively.
According to the actual demand of using the scene, the structure of support frame body can adjust to some extent, and its main function is the support and the installation of realization to temperature monitor.
The support frame is further described below in two embodiments.
The first embodiment is as follows: referring to fig. 1, the supporting frame in this embodiment is a dust-proof cover 3 disposed outside the rotor of the generator in the prior art. The two temperature monitors are arranged on the top of the dust shield in parallel and aligned with the upper surface of the generator slip ring below the dust shield.
Example two: referring to fig. 2, the supporting frame in this embodiment is a vertically arranged frame body 9, and includes a cross beam and a vertical column, the lower end of the vertical column is mounted on the platform through a connecting member such as a bolt, and both ends of the cross beam are respectively fixedly connected with the upper end of the vertical column. The crossbeam strides the top of locating the generator pivot, and two temperature monitor are installed on the crossbeam side by side, and align with the generator sliding ring face of its below.
The alarm mechanism comprises an audible alarm and/or a light alarm.
And data transmission modes of limited connection are respectively arranged between the temperature monitor and the digital display instrument, between the digital display instrument and the DCS control system and between the DCS control system and the alarm mechanism. The data detected by the temperature monitor is transmitted to the digital display instrument, and the digital display instrument displays the real-time temperature of the generator slip ring in real time, so that the monitoring by maintenance personnel is facilitated; the data are uploaded to the DCS control system by the digital display instrument, the alarm mechanism is started when the temperature reaches an alarm temperature value, the alarm sounds or flashes, operators can conveniently detect dangerous situations in the shortest time and carry out reasonable operation, exciting current is reduced, and accidents are avoided.
As a preferable scheme, the DCS can reflect the received real-time temperature data related to the generator slip ring on a centralized control CRT or a light word alarm board to play a role in alarming and reminding.
Claims (6)
1. A ring fire alarm device for a generator excitation slip ring is matched with a generator slip ring sleeved on an excitation end of a generator rotor shaft for use, and is characterized by comprising a temperature monitor, a support frame body, a digital display instrument and an alarm mechanism;
the support frame body is arranged on a platform of the generator rotor, and the temperature monitor is arranged on the support frame body and is positioned right above the generator slip ring;
the temperature monitor is connected with a digital display instrument arranged outside the generator, the digital display instrument is connected with a DCS control system, and the DCS control system is connected with the alarm mechanism.
2. The generator excitation slip ring fire alarm device according to claim 1, wherein the temperature monitor employs a german european-type infrared temperature probe CT-SR.
3. The excitation slip ring fire alarm device of claim 2, wherein the support frame body is a dust shield disposed outside the generator rotor; the temperature monitor is arranged on the top of the dust shield and is vertically aligned with the surface of the generator slip ring below the temperature monitor.
4. The ring fire alarm device of the generator excitation slip ring according to claim 2, wherein the support frame is a vertically arranged frame body and comprises a cross beam and a stand column, the lower end of the stand column is installed on the platform through a connecting piece, and two ends of the cross beam are respectively fixedly connected with the upper end of the stand column; the cross beam is arranged above the rotating shaft of the generator in a spanning mode, and the temperature monitor is installed on the cross beam and is aligned with the upper surface of the generator slip ring below the temperature monitor.
5. Generator excited slip ring fire alarm device according to any of claims 1-4, wherein the alarm mechanism comprises an audible alarm and/or a light alarm.
6. The excitation slip ring fire alarm device of any one of claims 1 to 4, wherein the temperature monitor is in wired connection with a digital display instrument; the digital display instrument is in wired connection with the DCS control system; the DCS control system is connected with the alarm mechanism in a wired mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021016508.8U CN212033955U (en) | 2020-06-05 | 2020-06-05 | Ring fire alarm device for generator excitation slip ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021016508.8U CN212033955U (en) | 2020-06-05 | 2020-06-05 | Ring fire alarm device for generator excitation slip ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212033955U true CN212033955U (en) | 2020-11-27 |
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ID=73476288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021016508.8U Active CN212033955U (en) | 2020-06-05 | 2020-06-05 | Ring fire alarm device for generator excitation slip ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212033955U (en) |
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2020
- 2020-06-05 CN CN202021016508.8U patent/CN212033955U/en active Active
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