CN215219872U - Sulfur hexafluoride gas leakage intelligent monitoring alarm system - Google Patents
Sulfur hexafluoride gas leakage intelligent monitoring alarm system Download PDFInfo
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- CN215219872U CN215219872U CN202120667544.9U CN202120667544U CN215219872U CN 215219872 U CN215219872 U CN 215219872U CN 202120667544 U CN202120667544 U CN 202120667544U CN 215219872 U CN215219872 U CN 215219872U
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Abstract
The embodiment of the utility model provides a sulfur hexafluoride gas leakage intelligent monitoring alarm system belongs to the fortune dimension technical field in transformer room. The system comprises: SF6A sensor arranged in the power transformation room and used for acquiring SF in the power transformation room6The gas concentration; an oxygen sensor arranged in the power transformation room for acquiring the stationThe oxygen concentration in the power transformation room; the alarm is arranged outside the power transformation room and used for starting to send out an alarm; controller, and said SF6Sensor, oxygen sensor and alarm connection for sensing said SF6Gas concentration, oxygen concentration determine whether to activate the alarm. The utility model provides a pair of sulfur hexafluoride gas leakage intelligent monitoring alarm system is through setting up SF _6 sensor and oxygen sensor in the transformer room, realizes SF in to the transformer room through the controller6And the concentration of gas and oxygen is monitored, so that the life safety of workers in the power transformation room is guaranteed.
Description
Technical Field
The utility model relates to an operation and maintenance technical field in transformer room specifically relates to a sulfur hexafluoride gas leakage intelligent monitoring alarm system.
Background
The transformer room is an important component in a power transmission system, and has the tasks of receiving electric energy, converting the voltage of the electric energy, reducing high-voltage electric energy of 35kv, 10kv or 6kv transmitted by a power grid into 380v/220v voltage which can be used by common machine equipment and lighting bulbs, and distributing the voltage to a required place. In the power transformation room, power equipment including a power transformer, a switching device, a transformer, a measuring instrument, a protective electric appliance and the like are stored. In these installations, high pressure SF6Switching devices are most common.
High pressure SF6The interior of the switchgear is filled with SF6Gas, SF6The gas is successfully applied to high-voltage switches and equipment thereof in the power industry mainly as an excellent insulating and arc extinguishing medium, and is SF in the fields of high voltage, ultrahigh voltage and extra-high voltage6The gas is almost the only insulating and extinguishing medium for circuit breakers and GIS.
But during the switch breaking operation, under the action of electric arc, corona, spark discharge and partial discharge, high temperature and other factors, SF6The gas undergoes decomposition, and its decomposition, upon encountering moisture, becomes a corrosive electrolyte, some of which are highly toxic decomposers, such as SF4、S2F2、S2F10、SOF2HF and SO2They can irritate the skin and mucous membranes, and if inhaled in large quantities, they can cause dizziness and emphysema, and even death. Is filled with SF6The gas equipment is mostly installed indoors, and the air circulation speed is relatively slow if SF6Once gas leaks, the gas is deposited in the chamber and is not easy to diffuse, SF6The gas itself is colorless and odorless, and is not easily detectable after leakage. In addition, due to SF6The gas has a higher specific gravity than oxygen and tends to be deposited at a lower levelIn the interlayer space, local oxygen deficiency is easily caused, so that people are suffocated. Thus, great potential safety hazard is caused to field workers.
On the one hand due to SF6With excellent insulating and arc-extinguishing properties, gradually SF6The apparatus is widely used in the high and medium voltage field, while, on the other hand, SF6The possibility that the gas itself may cause harm to equipment, the environment, and especially the life health and safety of field workers is also increasing. In order to ensure the normal and safe operation of the equipment and fully ensure the physical health and personal safety of field personnel, effective measures must be taken to carry out SF in the equipment area6And gas leakage is monitored, and accidents are prevented.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a sulfur hexafluoride gas leakage intelligent monitoring alarm system, this sulfur hexafluoride gas leakage intelligent monitoring alarm system can ensure personnel's safety in the transformer room.
In order to achieve the above object, the embodiment of the utility model provides a gas leakage intelligent monitoring alarm system, the system includes:
SF6a sensor arranged in the power transformation room and used for acquiring SF in the power transformation room6The gas concentration;
the oxygen sensor is arranged in the power transformation room and used for acquiring the oxygen concentration in the power transformation room;
the alarm is arranged outside the power transformation room and used for starting to send out an alarm;
controller, and said SF6Sensor, oxygen sensor and alarm connection for sensing said SF6Gas concentration, oxygen concentration determine whether to activate the alarm.
Optionally, the system includes a position sensor disposed near an entrance of the power transformation room, and the position sensor is connected to the controller for determining whether a person is about to enter the power transformation room.
Optionally, the system includes a first indicator light and a second indicator light, and the first indicator light and the second indicator light are connected to the controller and used for indicating whether a person is at an entrance of the substation.
Optionally, the system includes a temperature and humidity sensor connected to the controller for acquiring the temperature and humidity in the power transformation room.
Optionally, the controller is connected to a fan of the power transformation room, and is configured to control starting and closing of the fan.
Optionally, the system comprises a timer, and the controller is connected with the timer and used for counting the SF at a predetermined time6The sensor and the oxygen sensor execute zero-crossing calibration operation.
Optionally, the alarm comprises an audible alarm means and a light signal alarm means.
Optionally, the system includes a display, and the display is disposed outside the power transformation room, connected to the controller, and configured to display the state of the power transformation room in real time.
Through the technical scheme, the utility model provides a pair of sulfur hexafluoride gas leakage intelligent monitoring alarm system is through setting up SF in the transformer room6The sensor and the oxygen sensor realize the control of SF in the power transformation room through the controller6And the concentration of gas and oxygen is monitored, so that the life safety of workers in the power transformation room is guaranteed.
Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:
fig. 1 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention;
fig. 2 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and alarming system according to an embodiment of the present invention;
fig. 3 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention;
fig. 4 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention;
fig. 5 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention;
fig. 6 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention; and
fig. 7 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.
In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, and bottom" is generally used with respect to the orientation shown in the drawings or the positional relationship between the components in the vertical, or gravitational direction.
In addition, if there is a description in the embodiments of the present invention referring to "first", "second", etc., the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments can be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Fig. 1 is a block diagram of a sulfur hexafluoride gas leakage intelligent monitoring and warning system according to an embodiment of the present invention. In fig. 1, the system may include SF6A (sulfur hexafluoride) sensor 01, an oxygen sensor 02, an alarm 03, and a controller 04. Wherein, SF6The sensor 01 can be arranged in a power transformation room and used for acquiring SF (sulfur hexafluoride) in the power transformation room6The gas concentration. The oxygen sensor 02 may be disposed in a power transformation room, and is configured to obtain an oxygen concentration in the power transformation room. The alarm 03 may be located outside the substation for activation to sound an alarm. The controller 04 may communicate with the SF6Sensor 01, oxygen sensor 02 and alarm 03 connected for SF6The gas concentration, the oxygen concentration determines whether the alarm 03 is activated. Specifically, in this embodiment, the controller 04 may be based on SF6Gas concentration determination of whether SF occurs in current power transformation room6Gas leaks while determining whether staff can be admitted in the current substation based on the oxygen concentration. More specifically, the controller 04 may determine the SF6Whether the gas concentration is greater than a preset value. At SF6When the gas concentration is higher than the preset value, the alarm 03 can be started to warn the staff that SF occurs at the moment6Gas leakage accidents; on the contrary, the time-varying electric room is not in a leakage accident. The controller 04 can also judge the oxygen concentration, and when the oxygen concentration is judged to be lower than the threshold value allowed by the human body, the alarm 03 is controlled to give an alarm, so that the life safety of workers is guaranteed.
Since the controller 04 is to SF6There is a certain lag in the processing of the sensing signals of both the sensor 01 and the oxygen sensor 02, i.e., the controller 04 will determine the gas concentration in the power substation room at intervals. Then, in two time periods, if the staff enters the substation, the controller 04 may not issue the early warning in time. Thus, in this embodiment, as shown in fig. 2, the system may further comprise a position sensor 05. The position sensor 05 can be arranged at the entrance of a power transformation roomAnd is connected to the controller 04 for determining whether a person is about to enter the substation room. Thus, the controller 04 can immediately process the SF when the position sensor 05 finds that a person is about to enter the substation6The sensor 01 and the oxygen sensor 02 are used for detecting the gas concentration in the current power transformation room in time, and judging whether the alarm 03 is started or not according to the detection result so as to avoid threatening the life of workers.
Further, in order to facilitate the worker to determine whether the position sensor 05 is working properly, as shown in fig. 3, the system may include a first indicator lamp 06 and a second indicator lamp 07. The first indicator light 06 and the second indicator light 07 may be connected to the controller 04 to indicate whether a person is present at the entrance of the substation. Specifically, the first indicator light 06 may be used to indicate that someone is at the entrance, while the second indicator light 07 may be used to indicate that someone is not at the entrance. Further, the first indicator light 06 and the second indicator light 07 can be two different display modes of the same indicator light. For example a red status and a green status displayed by the same indicator light.
Considering that there are many power transformation equipments in the power transformation room, the temperature and humidity need to be kept in proper ranges, otherwise the operation of the power transformation equipment will be abnormal. The traditional method is to adopt a fan to ventilate regularly, thereby keeping the stable work of the power transformation equipment. However, this method also has a certain hysteresis, and the timing start of the fan can only adjust the temperature and humidity in the power transformation room at regular intervals. In a period, if the temperature and the humidity in the power transformation room do not meet the conditions of the power transformation equipment, and if the fan cannot be started in time, the work of the power transformation equipment is abnormal. Thus, as shown in fig. 4, in one embodiment of the invention, the system may include a temperature and humidity sensor 08. The temperature and humidity sensor 08 may be connected to the controller 04 and configured to obtain a temperature and a humidity in the power transformation room. The controller 04 may determine whether the current power transformation equipment in the power transformation room can stably operate through the temperature and the humidity. In the event that it is determined that the temperature and humidity do not satisfy the stable operation of the power transformation device, the controller 04 may activate the alarm 03 to inform the operator.
Further, considering that the worker may not be able to go to the process in time, as shown in fig. 5, the system may further include a fan 09. This fan 09 can be connected with controller 04, and controller 04 can directly start fan 09 under the condition of judging that this temperature and humidity do not satisfy transformer equipment steady operation like this to in time carry out the ventilation operation to the transformer room. In addition, for SF6The gas concentration and the oxygen concentration, if the controller 04 judges that the preset condition is not met, the fan 09 can be directly started to perform the ventilation operation, and the control logic of the part is similar to that described above, so that the description is omitted here.
In this embodiment, due to SF6The problems of zero drift of the sensor 01 and the oxygen sensor 02 occur after long-term use. In the face of this technical problem, the conventional treatment method is manual correction or direct replacement, and obviously, the method causes the increase of the manual maintenance cost. Thus, in this embodiment, the system may include a timer 10, as shown in fig. 6. The controller 04 may be connected to the timer 10 for counting SF at a predetermined time (e.g., zero point of day)6The sensor 01 and the oxygen sensor 02 perform zero-crossing calibration operation, so that the timed maintenance work of workers is avoided. In addition, the controller 04 is often made of a single chip, and the single chip itself has the function of the timer 10. Thus, the timer 10 may also be integrated into the controller 04, thereby reducing the cost of design and production.
In one embodiment of the present invention, in order to improve the alarm effect of the alarm 03, the alarm 03 may be used for an audio alarm device for emitting an audio signal and a light signal alarm device for emitting a light signal.
In one embodiment of the present invention, in order to facilitate the staff to view the current environmental conditions in the power transformation room, as shown in fig. 7, the system includes a display 11. The display 11 may be disposed outside the power transformation room, connected to the controller 04, and configured to display a status of the power transformation room in real time.
Through the technical scheme, the utility model provides a pair of sulfur hexafluoride gas leakage intelligent monitoring alarm system is through setting up SF in the transformer room6The sensor and the oxygen sensor realize the control of SF in the power transformation room through the controller6And the concentration of gas and oxygen is monitored, so that the life safety of workers in the power transformation room is guaranteed.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. An intelligent monitoring and alarming system for gas leakage, which is characterized in that the system comprises:
SF6a sensor arranged in the power transformation room and used for acquiring SF in the power transformation room6The gas concentration;
the oxygen sensor is arranged in the power transformation room and used for acquiring the oxygen concentration in the power transformation room;
the alarm is arranged outside the power transformation room and used for starting to send out an alarm;
controller, and said SF6Sensor, oxygen sensor and alarm connection for sensing said SF6Gas concentration, oxygen concentration determine whether to activate the alarm.
2. The system of claim 1, comprising a location sensor disposed near an entrance of the power transformation room, the location sensor being coupled to the controller for determining whether a person is about to enter the power transformation room.
3. The system of claim 2, comprising a first indicator light and a second indicator light, the first indicator light and the second indicator light being connected to the controller for indicating whether a person is present at the entrance of the substation.
4. The system of claim 1, comprising a temperature and humidity sensor connected to the controller for obtaining temperature and humidity within the power substation room.
5. The system of claim 1, wherein the controller is coupled to a fan of the power substation for controlling the fan to turn on and off.
6. The system of claim 1, comprising a timer, wherein the controller is coupled to the timer and configured to activate the SF at a predetermined time6The sensor and the oxygen sensor execute zero-crossing calibration operation.
7. The system of claim 1, wherein the alarm comprises an audible alarm device and a light signal alarm device.
8. The system of claim 1, comprising a display, wherein the display is disposed outside the power transformation room and connected to the controller for displaying the status of the power transformation room in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667544.9U CN215219872U (en) | 2021-03-31 | 2021-03-31 | Sulfur hexafluoride gas leakage intelligent monitoring alarm system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120667544.9U CN215219872U (en) | 2021-03-31 | 2021-03-31 | Sulfur hexafluoride gas leakage intelligent monitoring alarm system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323451A (en) * | 2021-12-27 | 2022-04-12 | 广东电网有限责任公司 | Gas leakage monitoring device and electrical equipment box |
| CN114876333A (en) * | 2022-04-25 | 2022-08-09 | 国网河北省电力有限公司雄安新区供电公司 | Intelligent fireproof door capable of monitoring |
-
2021
- 2021-03-31 CN CN202120667544.9U patent/CN215219872U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323451A (en) * | 2021-12-27 | 2022-04-12 | 广东电网有限责任公司 | Gas leakage monitoring device and electrical equipment box |
| CN114876333A (en) * | 2022-04-25 | 2022-08-09 | 国网河北省电力有限公司雄安新区供电公司 | Intelligent fireproof door capable of monitoring |
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