CN220753221U - Transformer accident oil discharge control monitoring system - Google Patents
Transformer accident oil discharge control monitoring system Download PDFInfo
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- CN220753221U CN220753221U CN202322335276.2U CN202322335276U CN220753221U CN 220753221 U CN220753221 U CN 220753221U CN 202322335276 U CN202322335276 U CN 202322335276U CN 220753221 U CN220753221 U CN 220753221U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 53
- 238000012806 monitoring device Methods 0.000 claims abstract description 12
- 239000000523 sample Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000002265 prevention Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 9
- 238000007599 discharging Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of transformer safety manufacturing, in particular to a transformer accident oil discharge control and monitoring system, which comprises: the system comprises a control display screen, a power supply box, an oil discharge electric valve, a starting control circuit, a PLC, a fire alarm unit, a monitoring device and an integrated monitoring terminal; the monitoring device is arranged on the transformer body and is connected with the PLC; the fire alarm unit is arranged on the periphery of the transformer body and is respectively connected with the transformer body and the PLC; the PLC is respectively connected with the control display screen and the integrated monitoring terminal; the power supply input end of the power supply box is connected with two paths of alternating current power supplies, and the output end of the power supply box is connected with the starting control circuit and is connected with the oil discharge electric valve through the starting control circuit; the oil discharge electric valve is arranged on an oil discharge pipeline of the transformer body and is connected with the PLC. According to the utility model, the high-voltage switch signal in the transformer is connected to lock the open loop of the electric valve, so that the misoperation prevention level of the system is improved.
Description
Technical Field
The utility model belongs to the technical field of transformer safety manufacturing, and particularly relates to a transformer accident oil discharge control and monitoring system.
Background
The large transformer is mostly of oil-immersed cooling type. Transformer oil is a product of petroleum with a flash point of about 140 ℃ and is easily evaporated and burned. Practice proves that the oil discharging module with the electric valve as the core executive component is additionally arranged in the places such as a transformer substation, a convertor station, other large transformer chambers and the like provided with the transformer, so that the transformer oil in the transformer body and the oil storage cabinet can be efficiently and stably discharged when a fire disaster occurs, and the risk of expanding the fire disaster can be effectively reduced.
Therefore, it is necessary to configure an oil extraction control system with high anti-operation and anti-misoperation performance for the oil extraction module, so that the oil extraction module can be started normally to work in a fire disaster, and meanwhile, the oil extraction module is prevented from misoperation in a normal operation of the transformer, and the state of the oil extraction device is monitored in real time. However, no oil discharge control system capable of meeting the above requirements has been developed.
Disclosure of Invention
Aiming at the problems of insufficient monitoring function, false operation prevention and poor anti-operation performance of an oil extraction module control system in the prior art, the utility model provides the oil extraction control system with perfect monitoring function and high false operation prevention and anti-operation performance.
The technical scheme adopted by the utility model for achieving the purpose is as follows: a transformer accident oil drainage control monitoring system, comprising: the system comprises a control display screen, a power supply box, an oil discharge electric valve, a starting control circuit, a PLC, a fire alarm unit, a monitoring device and an integrated monitoring terminal;
the monitoring device is arranged on the transformer body and is connected with the PLC to transmit monitoring signals in real time; the fire alarm unit is arranged on the periphery of the transformer body to monitor the state of the transformer body, and is respectively connected with the transformer body and the PLC;
the PLC is respectively connected with the control display screen and the integrated monitoring terminal;
the power supply input end of the power supply box is connected with two paths of alternating current power supplies, and the output end of the power supply box is connected with a starting control circuit and is connected with the oil discharge electric valve through the starting control circuit so as to control the starting and stopping of the oil discharge electric valve;
the oil discharge electric valve is arranged on an oil discharge pipeline of the transformer body and is connected with the PLC so as to monitor the state of the oil discharge electric valve in real time through the PLC.
The monitoring device comprises: a leakage monitor XL and an oil flow indicator YL which are respectively connected with the PLC;
the leakage monitor XL is arranged at the outlet of the oil discharge electric valve and generates a leakage signal;
the inlet end and the outlet end of the oil flow indicator YL are respectively connected to the oil discharge pipeline of the transformer body so as to detect the flowing condition of discharged oil.
The start control circuit includes: a power switch QA, a control handle ST, a high-voltage circuit breaker, a medium-voltage circuit breaker, a tripping signal unlocking handle S and a power monitoring indicator lamp L;
the power input end of the power switch QA is connected with a live wire and a zero wire respectively, and the live wire output end of the power switch QA is connected with a valve opening signal end of the oil discharge electric valve sequentially through a branch node, a control handle ST, a high-voltage circuit breaker and a medium-voltage circuit breaker;
the live wire output end of the power switch QA is connected with a valve closing signal end of the oil discharge electric valve through a branch node and a control handle ST;
the input end of the tripping signal unlocking handle S is connected with the control handle ST, the output end of the tripping signal unlocking handle S is connected with the valve opening signal end of the oil discharge electric valve, and the tripping signal unlocking handle S is respectively connected with the high-voltage circuit breaker and the medium-voltage circuit breaker in parallel;
the zero line output end of the power switch QA is connected with the N line of the oil discharge electric valve;
and a power supply monitoring indicator lamp L is arranged in parallel at the live wire output end and the zero line output end of the power supply switch QA.
The high-voltage circuit breaker and the medium-voltage circuit breaker are connected with the PLC so as to send tripping signals to the PLC.
The control handle ST and the trip signal unlocking handle S are both rotary knobs.
The control display screen is provided with an oil discharge electric valve full-open indicator lamp LG and an oil discharge electric valve full-closed indicator lamp LR;
the full-open indicator light LG of the oil discharge electric valve is connected with a valve opening signal end of the oil discharge electric valve;
and the oil discharge electric valve total-closing indicator lamp LR is connected with a valve closing signal end of the oil discharge electric valve.
The integrated monitoring terminal is a TEC intelligent terminal.
The fire alarm unit includes: the gas relay and the fire monitoring equipment are arranged on the transformer body;
the gas relay is a gas relay and is connected with the PLC;
the fire monitoring equipment is a flame probe, is arranged at the top of the transformer body, and is connected with the PLC.
The utility model has the following beneficial effects and advantages:
1. according to the utility model, through designing a control system program, a transformer fire signal, a heavy gas signal and a tripping signal of a starting control circuit of the monitoring device are connected, so that an oil discharge indication function is realized, and the misoperation prevention level of the system is improved.
2. According to the utility model, when the transformer runs, the power supply of the oil discharge electric valve is disconnected, and when the transformer is in an accident, the two electric valves are operated after double confirmation, so that the misoperation prevention level of the system is improved.
3. The utility model locks the starting control circuit by accessing the medium-voltage and high-voltage switch signals of the transformer, thereby improving the misoperation prevention level of the system. Meanwhile, an emergency unlocking handle is arranged on the locking loop, so that the anti-blocking level of the lifting system is improved
4. According to the utility model, by arranging the power supply box, a dual-power switching function is realized, the power supply reliability of the electric valve is improved, and the anti-movement level of the system is improved.
5. According to the utility model, through reassigning the AC380V power supply after the dual power supply is switched, the electric valves connected in parallel in the oil discharging module are respectively and independently powered, so that the anti-movement level of the system is improved.
6. According to the utility model, through accessing the oil discharge electric valve full-open and full-close signal, the leakage monitoring signal and the oil flow indicating signal, the oil discharge equipment is comprehensively monitored; and simultaneously, the signals and the fault signals of the control system are synchronously uploaded to an in-station integrated monitoring platform, so that the state monitoring of the whole oil discharging system is realized.
Drawings
FIG. 1 is a schematic diagram of the structural principle of the present utility model;
FIG. 2 is an electrical schematic diagram of a start-up control circuit of the present utility model;
FIG. 3 is a schematic diagram of an operation panel on a display control screen according to the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
The utility model discloses a transformer accident oil discharge control system, which adopts double confirmation operation of a power supply idle-open and switching handle to operate an electric valve, and locks an electric valve opening loop by accessing a high-voltage switch signal in a transformer, thereby improving the misoperation prevention level of the system. The locking loop is provided with an emergency unlocking handle, and the anti-action level is improved. A power supply box is arranged to provide a stable and reliable alternating current power supply for the system. The oil discharge electric valve is fully opened and fully closed, the leakage monitoring signal and the oil flow indicating signal, so that the oil discharge equipment is comprehensively monitored; and simultaneously, the signals and the fault signals of the control system are synchronously uploaded to an in-station integrated monitoring platform, so that the state monitoring of the whole oil discharging system is realized.
As shown in fig. 1, which is a schematic diagram of the structural principle of the present utility model, the oil discharge control and monitoring system for transformer accidents of the present utility model includes: control display screen, power supply case, oil extraction motorised valve, start control circuit, PLC, fire alarm unit, monitoring devices and integrated monitor terminal provide safe and reliable's guarantee for transformer oil extraction device steady operation.
The monitoring device is arranged on the transformer body and is connected with the PLC to transmit monitoring signals in real time; in this embodiment, the integrated monitoring terminal selects a TEC intelligent terminal.
A monitoring device, comprising: a leakage monitor XL and an oil flow indicator YL which are respectively connected with the PLC;
the leakage monitor XL is arranged at the outlet of the oil discharge electric valve and generates a leakage signal;
the leakage monitor XL is selected from the following models: a leak monitor for JRLD-216;
the inlet end and the outlet end of the oil flow indicator YL are respectively connected to the oil discharge pipeline of the transformer body so as to detect the flowing condition of discharged oil and assist a background person to judge the oil discharge action completion time;
the oil flow indicator YL is selected as the model: an oil flow indicator of YJ-150;
the fire alarm unit is arranged on the periphery of the transformer body to monitor the state of the transformer body, and is respectively connected with the transformer body and the PLC; the PLC is respectively connected with the control display screen and the integrated monitoring terminal;
a fire alarm unit comprising: the gas relay and the fire monitoring equipment are arranged on the transformer body; and are all connected with the PLC; the gas relay is selected from the following types: a gas relay of QJ 33B; the fire monitoring equipment is a flame probe and is arranged at the top of the transformer body.
The power supply input end of the power supply box is connected with two paths of alternating current power supplies, and the output end of the power supply box is connected with a starting control circuit and is connected with the oil discharge electric valve through the starting control circuit so as to control the starting and stopping of the oil discharge electric valve;
the oil discharge electric valve is arranged on an oil discharge pipeline of the transformer body and is connected with the PLC so as to monitor the state of the oil discharge electric valve in real time through the PLC.
As shown in fig. 2, an electrical schematic diagram of a starting circuit of an oil discharge electric valve according to the present utility model, wherein a starting control circuit includes: a power switch QA, a control handle ST, a high-voltage circuit breaker, a medium-voltage circuit breaker, a tripping signal unlocking handle S and a power monitoring indicator lamp L;
the power input end of the power switch QA is connected with a live wire and a zero wire respectively, and the live wire output end of the power switch QA is connected with a valve opening signal end of an oil discharge electric valve sequentially through a branch node, a control handle ST, a high-voltage circuit breaker and a medium-voltage circuit breaker;
the live wire output end of the power switch QA is connected with a valve closing signal end of the oil discharge electric valve through a branch node and a control handle ST;
the input end of the tripping signal unlocking handle S is connected with the control handle ST, the output end of the tripping signal unlocking handle S is connected with the valve opening signal end of the oil discharge electric valve, and the tripping signal unlocking handle S is respectively connected with the high-voltage circuit breaker and the medium-voltage circuit breaker in parallel;
the zero line output end of the power switch QA is connected with the N line of the oil discharge electric valve; a power supply monitoring indicator lamp L is arranged in parallel at the live wire output end and the zero wire output end of the power supply switch QA;
in the present utility model, a power switch QA and a control handle ST are provided as double confirmation of the operation of the electric valve, and the level of malfunction prevention is raised.
The power switch QA is directly commercially available and is an ABB brand device, and the model is S202-C6.
The control handle ST and the trip signal unlocking handle S are both rotary knobs.
As described in fig. 1 and 2, both the high voltage circuit breaker and the medium voltage circuit breaker are connected to the PLC to enable the transmission of trip signals to the PLC.
Fig. 3 is a schematic view of an operation panel of the display control screen according to the present utility model. The control display screen is provided with an oil discharge electric valve full-open indicator lamp LG and an oil discharge electric valve full-closed indicator lamp LR;
the full-open indicator light LG of the oil discharge electric valve is connected with a valve opening signal end of the oil discharge electric valve;
the oil discharge electric valve full-closing indicator lamp LR is connected with a valve closing signal end of the oil discharge electric valve.
The working principle of the utility model is as follows:
as shown in fig. 1, a PLC as an intelligent terminal is configured in a display control screen, and receives a heavy gas signal of a transformer body collected by a gas relay from a fire alarm system, and a fire alarm signal detected by fire monitoring equipment, and simultaneously receives an oil flow indicator YL signal and a leakage monitor XL signal, and displays the signals on a display screen HMI;
when the high-voltage circuit breaker and the medium-voltage circuit breaker in the starting control circuit are broken, a tripping signal of the transformer circuit breaker is sent to the PLC; the PLC will then transmit all the signals collected above to the integrated monitoring terminal.
The power supply box is internally connected with 2 paths of alternating current power supplies in total, after redundant control, the power supplies are transmitted to the oil discharge remote control screen to provide the alternating current power supplies for the transformer oil discharge electric valve, and the alternating current power supply 1 path switch QS1 and the alternating current power supply 2 path switch QS2 are in a closed state during operation.
As shown in fig. 2, a power switch QA, a control handle ST, a high-voltage breaker trip signal K1, and a medium-voltage breaker trip signal K2 are provided in the control circuit as a precondition for the start and close operations of the oil discharge motor valve. And is provided with a power monitoring indicator light L, and a breaker trip signal unlocks the handle S. During the use, the power switch QA is in an off state at ordinary times, the control handle ST is positioned at a stop position, the high-voltage circuit breaker tripping signal K1 and the medium-voltage circuit breaker tripping signal K2 are in an off state, and the circuit breaker tripping signal unlocking handle S is positioned at an 'interlocking' position, so that a control loop is completely disconnected, the oil discharge electric valve is ensured not to malfunction, and the malfunction prevention level is improved.
An operation panel on a control display screen is used, an oil discharge electric valve is ready to be started through a PLC, an alternating current power supply switch QS1 or QS2 in a power supply box is confirmed to be closed before operation, at the moment, if a high-voltage circuit breaker K1 and a medium-voltage circuit breaker K2 are in a tripping state, a power supply switch QA is operated to be closed, a power supply monitoring indicator lamp L is observed and confirmed to be on, and a control handle S is rotated to an on position.
At this time, if the high-voltage circuit breaker K1 and the medium-voltage circuit breaker K2 are not in the trip state, the trip signal unlocking handle S of the circuit breaker may be rotated to the unlocking position, and the ac power enters the valve opening functional positions of the oil discharging electric valves M1 and M2 along the circuit, so that the oil discharging electric valves M1 and M2 are slowly opened, as shown in fig. 2.
After the oil discharge electric valve is completely opened, the oil discharge electric valve can be observed on an operation panel of the oil discharge remote control screen, a full-open indicator light LG of the oil discharge electric valve is lightened (as shown in figure 3), and a leakage monitor XL generates an alarm signal. At this time, the oil flow indicator YL is operated, and the normally open contact corresponding to the inside is turned to the closed state.
When the oil discharge operation is completed, the control handle ST is operated to the closed position so that the oil discharge electric valve obtains the closed power supply, and the oil discharge electric valves M1 and M2 are slowly closed. After the oil drain motor valve is completely closed, the oil drain motor valve full-closing indicator lamp LR is observed on the oil drain remote control screen operation panel to be lightened, as shown in fig. 3.
The oil discharge motor-operated valves M1 and M2, the leakage monitor XL and the oil flow indicator YL are sequentially transmitted to a PLC in a control display screen, and the signal actions are displayed on the display screen HMI. The PLC synchronously transmits the action signals to the receiving end of the integrated monitoring platform in a communication mode, so that real-time synchronous sharing of the action signals with the data signals of the background is realized, and the requirements of background personnel on signal monitoring are met, as shown in figure 1.
In the aspect of oil discharge misoperation horizontal lifting, the utility model extends around automatic oil discharge logic optimization and electric valve power supply power taking scheme optimization, changes collected transformer fire alarm signals, heavy gas signals and tripping signals of a starting control circuit from automatic oil discharge control conditions to auxiliary prompt functions, and improves misoperation prevention horizontal performance; meanwhile, a power supply box is added, and when the dual-power switching device is used in the box, elements such as a circuit breaker and the like are added, so that when the transformer runs, a power loop of the electric valve is not electrified, and the power supply box is a key measure for improving the misoperation prevention level of the system.
And adding a fuel flow indicator and other elements at the tail end of the fuel outlet of the fuel discharge pipeline, and uploading signals to a control system to be used as a reference judgment basis for the completion time of the fuel discharge operation.
The extra-high voltage alternating current transformer oil storage tank has less transformer oil, can flow to the body oil tank in a short time, and the oil storage tank can not independently take emergency oil discharge measures. Therefore, aiming at the extra-high voltage alternating current transformer, a body oil discharging system is designed in an optimized mode, a power supply loop is integrated into the control screen cabinet, and oil discharging operation is simplified;
meanwhile, in other embodiments, transformers with different phases can be distinguished by using the yellow panel, the green panel and the red panel, and according to the uploading condition of high and medium voltage switch signals, a locking loop is designed, so that the risk of misoperation is comprehensively reduced.
Claims (8)
1. A transformer accident oil drainage control monitoring system, comprising: the system comprises a control display screen, a power supply box, an oil discharge electric valve, a starting control circuit, a PLC, a fire alarm unit, a monitoring device and an integrated monitoring terminal;
the monitoring device is arranged on the transformer body and is connected with the PLC to transmit monitoring signals in real time; the fire alarm unit is arranged on the periphery of the transformer body to monitor the state of the transformer body, and is respectively connected with the transformer body and the PLC;
the PLC is respectively connected with the control display screen and the integrated monitoring terminal;
the power supply input end of the power supply box is connected with two paths of alternating current power supplies, and the output end of the power supply box is connected with a starting control circuit and is connected with the oil discharge electric valve through the starting control circuit so as to control the starting and stopping of the oil discharge electric valve;
the oil discharge electric valve is arranged on an oil discharge pipeline of the transformer body and is connected with the PLC so as to monitor the state of the oil discharge electric valve in real time through the PLC.
2. The transformer accident oil drainage control monitoring system of claim 1, wherein the monitoring device comprises: a leakage monitor XL and an oil flow indicator YL which are respectively connected with the PLC;
the leakage monitor XL is arranged at the outlet of the oil discharge electric valve and generates a leakage signal;
the inlet end and the outlet end of the oil flow indicator YL are respectively connected to the oil discharge pipeline of the transformer body so as to detect the flowing condition of discharged oil.
3. The transformer accident oil drain control monitoring system of claim 1, wherein the start control circuit comprises: a power switch QA, a control handle ST, a high-voltage circuit breaker, a medium-voltage circuit breaker, a tripping signal unlocking handle S and a power monitoring indicator lamp L;
the power input end of the power switch QA is connected with a live wire and a zero wire respectively, and the live wire output end of the power switch QA is connected with a valve opening signal end of the oil discharge electric valve sequentially through a branch node, a control handle ST, a high-voltage circuit breaker and a medium-voltage circuit breaker;
the live wire output end of the power switch QA is connected with a valve closing signal end of the oil discharge electric valve through a branch node and a control handle ST;
the input end of the tripping signal unlocking handle S is connected with the control handle ST, the output end of the tripping signal unlocking handle S is connected with the valve opening signal end of the oil discharge electric valve, and the tripping signal unlocking handle S is respectively connected with the high-voltage circuit breaker and the medium-voltage circuit breaker in parallel;
the zero line output end of the power switch QA is connected with the N line of the oil discharge electric valve;
and a power supply monitoring indicator lamp L is arranged in parallel at the live wire output end and the zero line output end of the power supply switch QA.
4. A transformer accident oil drain control monitoring system according to claim 3, wherein the high voltage circuit breaker and the medium voltage circuit breaker are connected to the PLC to enable transmission of trip signals to the PLC.
5. A transformer accident oil drain control monitoring system according to claim 3, wherein the control handle ST and the trip signal unlocking handle S are both rotary knobs.
6. The transformer accident oil discharge control and monitoring system according to claim 1, wherein the control display screen is provided with an oil discharge electric valve full-open indicator lamp LG and an oil discharge electric valve full-closed indicator lamp LR;
the full-open indicator light LG of the oil discharge electric valve is connected with a valve opening signal end of the oil discharge electric valve;
and the oil discharge electric valve total-closing indicator lamp LR is connected with a valve closing signal end of the oil discharge electric valve.
7. The transformer accident oil drainage control monitoring system according to claim 1, wherein the integrated monitoring terminal is a TEC intelligent terminal.
8. The transformer accident oil drain control monitoring system of claim 1, wherein the fire alarm unit comprises: the gas relay and the fire monitoring equipment are arranged on the transformer body;
the gas relay is a gas relay and is connected with the PLC;
the fire monitoring equipment is a flame probe, is arranged at the top of the transformer body, and is connected with the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322335276.2U CN220753221U (en) | 2023-08-28 | 2023-08-28 | Transformer accident oil discharge control monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322335276.2U CN220753221U (en) | 2023-08-28 | 2023-08-28 | Transformer accident oil discharge control monitoring system |
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| Publication Number | Publication Date |
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| CN220753221U true CN220753221U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322335276.2U Active CN220753221U (en) | 2023-08-28 | 2023-08-28 | Transformer accident oil discharge control monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753221U (en) |
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2023
- 2023-08-28 CN CN202322335276.2U patent/CN220753221U/en active Active
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