CN216133495U - Dry air charging interruption alarm device for transformer - Google Patents
Dry air charging interruption alarm device for transformer Download PDFInfo
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- CN216133495U CN216133495U CN202121762006.4U CN202121762006U CN216133495U CN 216133495 U CN216133495 U CN 216133495U CN 202121762006 U CN202121762006 U CN 202121762006U CN 216133495 U CN216133495 U CN 216133495U
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- 238000001514 detection method Methods 0.000 claims abstract description 74
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
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Abstract
The utility model discloses a discontinuous alarm device for dry air filling of a transformer, which comprises a transformer detection unit, an alarm detection controller and an alarm, wherein the transformer detection unit comprises a speed measurement head for detecting the air filling speed of the transformer when dry air is filled and a micro-positive pressure detection assembly for detecting the micro-positive pressure of the transformer when the dry air is filled, the output ends of the speed measurement head and the micro-positive pressure detection assembly are connected with the input end of the alarm detection controller, and the output end of the alarm detection controller is connected with the alarm. The utility model can realize real-time monitoring of the charging continuity of the dry air of the transformer to timely send out an alarm for the intermittent condition of the dry air charging, remind the operator of the current charging interruption fault, realize the timely inspection of the charging device and each connecting position, avoid the exposure of the interior of the transformer to the environment with unqualified humidity, reduce the labor intensity of manual inspection, improve the maintenance quality of the transformer, and has simple structure, convenient operation and low cost.
Description
Technical Field
The utility model relates to monitoring equipment in a process of filling dry air into a transformer, in particular to a discontinuous alarm device for filling dry air into a transformer.
Background
With the continuous development of industry and agriculture, the number of transformers in a power system is more and more, and the accident rate of the transformers is also more and more. When serious faults occur in the transformer body, such as winding burning loss, serious oil body pollution and the like, the transformer needs to be subjected to oil discharge maintenance. According to the storage environment requirement of the gauge pressure internal assembly, the transformer needs to be guaranteed to be kept in a dry environment after oil is discharged from the transformer, so that the internal assembly of the transformer is prevented from being exposed to an unqualified environment with humidity for a long time, and equipment damage is prevented. Therefore, at present, the dry environment inside the body is always maintained by filling dry air into the transformer during the maintenance of the transformer.
However, the following problems often occur during the process of filling the dry air into the transformer: (1) the dry air inflator frequently fails to stop, resulting in interruption of the process of filling the dry air; (2) the connecting piece of the dry air inflation pipeline is loosened, so that the process of inflating dry air is interrupted or the effect is poor; (3) the technical means for manually checking the dry air inflation effect of the transformer is insufficient, and the labor is consumed; (4) at present, no device product for detecting the continuity of the dry air inflation process of the transformer in real time exists in the market.
SUMMERY OF THE UTILITY MODEL
The technical problems to be solved by the utility model are as follows: aiming at the problems in the prior art, the utility model provides a discontinuity alarm device for dry air charged in a transformer, which can realize real-time monitoring of the charging continuity of the dry air of the transformer, timely alarm is given when the discontinuity of the dry air charged in the transformer occurs, further, an operator is reminded of the current charging interruption fault, the charging device and each connecting position are timely checked, the situation that the interior of the transformer is exposed to an environment with unqualified humidity is avoided, the labor intensity of manual checking can be reduced, the transformer overhauling quality is improved, the structure is simple, the operation is convenient, and the cost is low.
In order to solve the technical problems, the utility model adopts the technical scheme that:
the utility model provides a transformer fills dry air and is interrupted alarm device, includes transformer detecting element, alarm detection control ware and alarm, transformer detecting element is including the pressure-fired detection module that is used for detecting the speed head that aerifys the wind speed when the transformer fills dry air and is used for detecting the pressure-fired when the transformer fills dry air, speed-fired head, pressure-fired detection module's output link to each other with alarm detection control ware's input respectively, alarm detection control ware's output links to each other with the alarm.
Optionally, the speed measuring head is an airflow speed sensor, and the airflow speed sensor is mounted in a body pipeline for charging dry air on the transformer and is used for detecting the charging wind speed when the transformer is charged with dry air.
Optionally, the pressure-fired detection subassembly includes connecting tube and pressure-fired sensor, the pressure-fired sensor passes through the inner chamber intercommunication of connecting tube and transformer, pressure-fired sensor's output links to each other with the input of warning detection control ware.
Optionally, a valve is arranged on the connecting pipeline.
Optionally, the alarm detection controller includes AC/DC module and relay switch KA 1-KA 3, the direct current side of connecting in parallel to the AC/DC module after the contact of speed measuring head and the coil of relay switch KA1 are established ties, the direct current side of connecting in parallel to the AC/DC module after the contact of pressure-fired detection subassembly and the coil of relay switch KA2 are established ties, the main contact of relay switch KA1, the main contact of relay switch KA2 are connected in parallel first, then connect in series with the coil of relay switch KA3, connect in parallel to the direct current side of AC/DC module at last, the main contact of relay switch KA3, the direct current side of connecting with the AC/DC module after the alarm is established ties form the alarm return circuit.
Optionally, the alarm detection controller further comprises an air switch, and the AC side of the AC/DC module is connected to an external AC power source through the air switch.
Optionally, the alarm detection controller further comprises a relay switch KA10, a start alarm button switch and a stop alarm button switch, the main contact of the relay switch KA10 is connected in series on the alarm loop, and the start alarm button switch and the stop alarm button switch connected in series with the main contact of the relay switch KA10 are connected in parallel first, then connected in series with the coil of the relay switch KA10, and finally connected in parallel to the DC side of the AC/DC module.
Optionally, a control cabinet is arranged outside the alarm detection controller, the alarm is an audible and visual alarm, and the audible and visual alarm is mounted at the top of the control cabinet.
In addition, the utility model also provides a dry air charging device for the transformer, which comprises an air source assembly and an air charging pipe with a connecting flange, and also comprises a dry air charging interruption alarm device for the transformer.
In addition, the utility model also provides a transformer, which comprises a transformer body and the intermittent alarm device for the dry air filling of the transformer.
Compared with the prior art, the utility model has the following advantages:
1. the oil discharge and gas filling monitoring system is simple in structure, convenient to operate and strong in expansibility, and combines the characteristics and requirements of oil discharge and gas filling maintenance of a transformer of a power system, so that an alarm can be given in time when the interruption condition occurs in the process of filling dry air into the transformer, the condition that the interior of the transformer is exposed to an environment with unqualified humidity is effectively avoided, the labor intensity of manual inspection is reduced, and the maintenance quality of the transformer is improved.
2. The inflation rate and the slight positive pressure of the transformer during the process of filling dry air are detected through the speed measuring head and the slight positive pressure node detection assembly, alarm control can be performed according to needs, for example, if one of the speed measuring head and the slight positive pressure node detection assembly does not meet the requirements, the intermittent condition of the transformer during the process of filling dry air is represented, and the real-time monitoring reliability is high.
3. The alarm detection controller can judge the discontinuous condition of the dry air filling process of the transformer and send an action instruction to the alarm part, and has the advantages of good universality and strong expandability.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the present invention.
FIG. 2 is a schematic diagram of the circuit of the alarm detection controller according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of the circuit interface of the alarm detection controller in an embodiment of the present invention.
Illustration of the drawings: 1. a transformer detection unit; 11. a speed measuring head; 12. a micro positive pressure detection assembly; 121. connecting a pipeline; 122. a micro positive pressure sensor; 123. a valve; 2. an alarm detection controller; 21. an AC/DC module; 22. an air switch; 23. starting an alarm button switch; 24. stopping the alarm button switch; 3. an alarm; 4. a control cabinet.
Detailed Description
The first embodiment is as follows:
as shown in fig. 1, the intermittent alarm device for dry air charging of a transformer of this embodiment includes a transformer detection unit 1, an alarm detection controller 2 and an alarm 3, the transformer detection unit 1 includes a velocity measurement head 11 for detecting the air charging speed of the transformer when the dry air charging is performed and a micro-positive pressure detection component 12 for detecting the micro-positive pressure of the transformer when the dry air charging is performed, the velocity measurement head 11 and the output end of the micro-positive pressure detection component 12 are respectively connected with the input end of the alarm detection controller 2, and the output end of the alarm detection controller 2 is connected with the alarm 3. The transformer of this embodiment fills dry air and is interrupted alarm device simple structure, convenient operation, expansibility are strong, combine power system transformer oil extraction to aerify and overhaul characteristics and requirement of maintaining, realize that the transformer fills dry air process and can in time report to the police when taking place to be interrupted the condition, effectively avoid the inside environment that exposes at the humidity ineligible of transformer, alleviate the intensity of labour of manual inspection, improve transformer maintenance quality. The intermittent alarm device for dry air filling of the transformer of the embodiment detects the air filling rate and the micro positive pressure when the dry air is filled into the transformer through the speed measuring head 11 and the micro positive pressure detection component 12, can perform alarm control according to needs, for example, if one of the speed measuring head and the micro positive pressure detection component does not meet the requirement, the intermittent condition exists in the dry air filling process of the transformer, and the reliability of real-time monitoring is high. The transformer fills dry air and is interrupted alarm device alarm detection controller of this embodiment can realize filling the dry air process to the transformer and have the judgement of the condition of interrupting to 3 parts of alarm send the action instruction, and have the advantage that the commonality is good, scalability is strong. The transformer of this embodiment fills dry air and is interrupted alarm device simple structure, convenient operation, expansibility are strong, combine power system transformer oil extraction to aerify and overhaul characteristics and requirement of maintaining, realize that the transformer fills dry air process and can in time report to the police when taking place to be interrupted the condition, effectively avoid the inside environment that exposes at the humidity ineligible of transformer, alleviate the intensity of labour of manual inspection, improve transformer maintenance quality.
In this embodiment, the speed measuring head 11 is an airflow speed sensor, and the airflow speed sensor is installed in a main body pipeline for charging dry air on the transformer so as to detect the charging air speed when the transformer charges the dry air. The speed measuring head 11 is communicated with the interior of the transformer through a body pipeline of the transformer, so that the space is saved, and the structure is simple. The speed measuring head 11 can send a wind speed detection result, when the wind speed detection result is lower than a set value or the pressure detection result is lower than the set value, the condition that the process of filling dry air into the transformer is interrupted is indicated, and the continuity of the process of filling dry air into the transformer can be monitored in real time.
In this embodiment, the micro-positive pressure detecting assembly 12 includes a connecting pipe 121 and a micro-positive pressure sensor 122, the micro-positive pressure sensor 122 is communicated with the inner cavity of the transformer through the connecting pipe 121, and the output end of the micro-positive pressure sensor 122 is connected with the input end of the alarm detecting controller 2. The micro-positive pressure sensor 122 is communicated with the interior of the transformer through the connecting pipeline 121, and the connecting pipeline 121 can be a body pipeline or a special pipeline of the transformer, so that the space is saved, and the structure is simple. The micro-positive pressure sensor 122 may send a pressure detection result, and when the pressure detection result is lower than a set value or the pressure detection result is lower than the set value, it indicates that there is a discontinuous condition in the process of filling dry air into the transformer, and may implement real-time monitoring on the continuity of the process of filling dry air into the transformer.
In this embodiment, the valve 123 is disposed on the connection pipeline 121, so as to protect the micro-positive pressure sensor 122 in a non-monitoring state, and to ensure the service life and detection performance of the micro-positive pressure sensor 122.
As shown in fig. 2, the alarm detection controller 2 of this embodiment includes an AC/DC module 21 and relay switches KA 1-KA 3, a contact of the velocity head 11 is connected in series with a coil of the relay switch KA1 and then connected in parallel to a DC side of the AC/DC module 21, a contact of the micro-positive pressure detection component 12 is connected in series with a coil of the relay switch KA2 and then connected in parallel to a DC side of the AC/DC module 21, a main contact of the relay switch KA1 and a main contact of the relay switch KA2 are connected in parallel, then connected in series with a coil of the relay switch KA3 and finally connected in parallel to a DC side of the AC/DC module 21, and a main contact of the relay switch KA3 and the alarm 3 are connected in series and then connected with a DC side of the AC/DC module 21 to form an alarm loop.
In order to realize the control of the working state of the alarm detection controller 2, as shown in fig. 2, the alarm detection controller 2 in this embodiment further includes an air switch 22, and the AC side of the AC/DC module 21 is connected to an external AC power supply through the air switch 22.
In this embodiment, the alarm detection controller 2 further includes a relay switch KA10, a start alarm button switch 23, and a stop alarm button switch 24, the main contact of the relay switch KA10 is connected in series to the alarm loop, and the start alarm button switch 23 and the stop alarm button switch 24 connected in series to the main contact of the relay switch KA10 are connected in parallel first, then connected in series to the coil of the relay switch KA10, and finally connected in parallel to the DC side of the AC/DC module 21. The stop alarm function can be interrupted by using the stop alarm button switch 24, and the alarm function can be started by starting the alarm button switch 23, so that the operation is simple and convenient.
Referring to fig. 2, the alarm detection controller 2 forms an electrical control loop through the relay switch, so that the intermittent condition in the process of filling dry air into the transformer can be judged, and an action instruction is sent to the audible and visual alarm part, and the alarm detection controller has the advantages of good universality, strong expandability and low cost.
Fig. 3 is a schematic diagram of an external interface of the alarm detection controller 2 in this embodiment, and it can be seen from fig. 3 that the alarm detection controller 2 in this embodiment mainly includes a speed measurement head power supply contact, a speed measurement alarm contact, a pressure contact and an alarm contact besides the 24V power supply interface, where the speed measurement head power supply contact, the speed measurement alarm contact and the pressure contact include a positive power supply contact and a negative power supply contact, and the alarm contact is only a positive power supply contact.
Referring to fig. 1, 2 outsides of alarm detection controller are equipped with switch board 4 in this embodiment, alarm 3 is audible-visual annunciator (can send out warning sound and light efficiency when wind speed detection controller judges that the transformer fills the dry air condition of taking place and is interrupted, and then remind operating personnel to have at present and aerify the interrupt failure, realize the timely inspection to aerating device and each hookup location, avoid the inside environment that exposes at the unqualified humidity of transformer, audible-visual annunciator installs the top at switch board 4, the audible-visual annunciator's of being convenient for propagation.
To sum up, the transformer of this embodiment fills dry air and is interrupted alarm device simple structure, convenient operation, expansibility are strong, combine power system transformer oil extraction to aerify and overhaul characteristics and the requirement of maintaining, realize that the transformer fills dry air process and can in time report to the police when taking place to be interrupted the condition, effectively avoid the inside environment that exposes at humidity ineligible of transformer, alleviate the intensity of labour of manual inspection, improve the transformer and overhaul the quality. The transformer of this embodiment fills dry air and is interrupted alarm device can realize real-time supervision transformer dry air's inflation continuity, fill dry air to taking place the transformer and be interrupted the condition and in time send the warning, and then remind operating personnel to have at present and aerify the interrupt failure, realize the timely inspection to aerating device and each hookup location, avoid the inside environment that exposes at the humidity ineligible of transformer, can alleviate the intensity of labour of manual inspection, improve the transformer maintenance quality, moreover, the steam generator is simple in structure, and convenient for operation, and is low in cost.
In addition, this embodiment still provides a dry air charging device of transformer, includes air supply assembly and the gas tube that has flange, still includes aforementioned dry air charging of transformer and is interrupted alarm device. The air source assembly may be a compressed air tank, an air pump or other air source capable of providing dry air, wherein the dry air may be pre-stored or temporarily prepared.
In addition, this embodiment still provides a transformer, including the transformer body, the transformer still includes that aforementioned transformer fills dry air and is interrupted alarm device. It goes without saying that the control cabinet 4 can be optionally mounted on the transformer body, or alternatively can be placed separately.
Example two:
the present embodiment is basically the same as the first embodiment, and the main differences are as follows: in this embodiment, a remote communication module is further connected in series to the alarm loop where the alarm 3 is located, and is configured to send a message to a remote communication target (e.g., a server or a specific object in a network) when the alarm 3 alarms.
Example three:
the present embodiment is basically the same as the first embodiment, and the main differences are as follows: in this embodiment, the alarm detection controller 2 is implemented by using a comparator and a driving circuit, the output ends of the velocity measurement head 11 and the micro-positive pressure detection assembly 12 are respectively connected with the driving circuit through different comparators, and the output end of the driving circuit is connected with the alarm 3. The output ends of the speed measuring head 11 and the micro-positive pressure detection component 12 are respectively connected to one input end of different comparators, the other input end of each comparator is connected to a reference voltage, if the output signal of the speed measuring head 11 or the micro-positive pressure detection component 12 is greater than the reference voltage, the comparator outputs a high-level alarm signal, and the high-level alarm signal drives the alarm 3 to give an alarm through the driving circuit; the driving circuit is a signal amplifying circuit and is used for driving the alarm 3 to work based on a high-level alarm signal.
Example four:
the present embodiment is basically the same as the first embodiment, and the main differences are as follows: in this embodiment, the alarm detection controller 2 is implemented by using a microprocessor and a driving circuit, and the microprocessor can also be programmed to drive the alarm 3 to give an alarm by using the driving circuit when the output signal of the velocity measuring head 11 or the micro-positive pressure detection assembly 12 is lower than a preset threshold. It should be noted that the present embodiment provides a hardware device which can drive the alarm 3 to give an alarm according to the output signal of the velocity head 11 or the micro-positive pressure detection assembly 12, but the method of the present embodiment does not depend on a specific alarm method, for example, it may be a basic threshold alarm, or an alarm may be given by other more complex algorithms.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (10)
1. The utility model provides a transformer fills dry air and is interrupted alarm device, a serial communication port, including transformer detecting element (1), alarm detection control ware (2) and alarm (3), transformer detecting element (1) is including being used for detecting the transformer and fills speed measuring head (11) of the air velocity of aerifing when dry air and be used for detecting transformer pressure-fired pressure detection subassembly (12) when filling dry air, the output of speed measuring head (11), pressure-fired pressure detection subassembly (12) links to each other with the input of alarm detection control ware (2) respectively, the output of alarm detection control ware (2) links to each other with alarm (3).
2. The interruption warning device for dry air charging of transformer according to claim 1, characterized in that the speed measuring head (11) is an air flow sensor mounted in the main duct for dry air charging of transformer for detecting the charging air speed when the transformer is charged with dry air.
3. The dry air-filled intermittent alarm device for the transformer according to claim 2, wherein the micro-positive pressure detection assembly (12) comprises a connecting pipeline (121) and a micro-positive pressure sensor (122), the micro-positive pressure sensor (122) is communicated with an inner cavity of the transformer through the connecting pipeline (121), and an output end of the micro-positive pressure sensor (122) is connected with an input end of the alarm detection controller (2).
4. The dry air interruption warning device for transformer according to claim 3, wherein a valve (123) is provided on the connection pipe (121).
5. The dry air filled discontinuity alarm device for transformers according to claim 1, the alarm detection controller (2) comprises an AC/DC module (21) and relay switches KA 1-KA 3, the contact of the speed measuring head (11) is connected with the coil of the relay switch KA1 in series and then connected to the direct current side of the AC/DC module (21) in parallel, the direct current side of parallelly connected AC/DC module (21) is again established ties after the contact of pressure-fired detection subassembly (12) and relay switch KA 2's coil, and relay switch KA 1's main contact, relay switch KA 2's main contact are parallelly connected earlier, establish ties with relay switch KA 3's coil again and connect in parallel to the direct current side of AC/DC module (21) at last, and relay switch KA 3's main contact, alarm (3) establish ties the back and link to each other with the direct current side of AC/DC module (21) and form the warning return circuit.
6. A transformer dry air break alarm device according to claim 5, characterized in that said alarm detection controller (2) further comprises an air switch (22), and the AC side of said AC/DC module (21) is connected to an external AC power source through the air switch (22).
7. The dry air break alarm device for transformer according to claim 1, characterized in that said alarm detection controller (2) further comprises a relay switch KA10, a start alarm button switch (23) and a stop alarm button switch (24), the main contacts of said relay switch KA10 being connected in series on the alarm circuit, said start alarm button switch (23) and said stop alarm button switch (24) connected in series with the main contacts of the relay switch KA10 being both connected in parallel first, then in series with the coil of the relay switch KA10 and finally in parallel to the DC side of the AC/DC module (21).
8. The interruption alarm device for dry air filling of transformer according to claim 1, wherein a control cabinet (4) is arranged outside the alarm detection controller (2), the alarm (3) is an audible and visual alarm, and the audible and visual alarm is mounted on the top of the control cabinet (4).
9. A dry air charging device for a transformer, which is characterized by comprising an air source assembly and an air charging pipe with a connecting flange, and further comprising a dry air charging interruption alarm device for a transformer according to any one of claims 1 to 8.
10. A transformer, comprising a transformer body, characterized in that the transformer further comprises a dry air filled discontinuity alarm device as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762006.4U CN216133495U (en) | 2021-07-30 | 2021-07-30 | Dry air charging interruption alarm device for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762006.4U CN216133495U (en) | 2021-07-30 | 2021-07-30 | Dry air charging interruption alarm device for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216133495U true CN216133495U (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121762006.4U Active CN216133495U (en) | 2021-07-30 | 2021-07-30 | Dry air charging interruption alarm device for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216133495U (en) |
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2021
- 2021-07-30 CN CN202121762006.4U patent/CN216133495U/en active Active
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