Substation indoor fire hazard early warning device based on air ions

Abstract

The invention relates to the technical field of electric power operation and maintenance, and particularly discloses a substation indoor fire hazard early warning device based on air ions, which comprises an air sampling pipe network used for collecting air samples from a protected area in real time; the filtering system comprises a plurality of filtering layers and is used for removing interfering substances in the air sample; the mixing pretreatment chamber is used for adjusting the temperature and / or humidity of the air sample; the cloud chamber is used for detecting the number of cloud-state water drops formed by pyroelectric ions in the air of the pretreated air sample; the data analysis system is used for analyzing the quantity of the received cloud-state water drops and judging whether an alarm needs to be given or not according to a preset threshold value; and the alarm system is used for automatically sending out a sound-light alarm signal when the data analysis system detects the fire hazard. According to the air ion-based substation indoor fire hazard early warning device provided by the invention, the fire hazard can be recognized earlier and more accurately, the false alarm rate is reduced, and the fire safety level of a substation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to an air ion-based early warning device for fire hazards in a transformer substation. Background Art

[0002] With the continuous development of the power system, the safe operation of equipment in substations has become one of the key factors to ensure the safety of electricity use in social production and life. However, due to low sensitivity, late alarm time, and susceptibility to environmental factors, traditional smoke detectors and temperature measuring equipment are unable to detect electrical fire hazards in a timely manner, and there are false alarms, which increases the workload of operation and maintenance personnel. In addition, these traditional methods cannot accurately distinguish between dust and other non-fire factors, resulting in inaccurate fire warnings. Therefore, there is an urgent need to develop a new fire warning device that can identify fire hazards earlier and more accurately, reduce false alarm rates, and improve the fire safety level of substations.

[0003] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Summary of the invention

[0004] An object of the present invention is to provide an indoor fire hazard warning device for a substation based on air ions, which can identify fire hazards earlier and more accurately, reduce false alarm rates, and improve the fire safety level of the substation.

[0005] To achieve the above purpose, the present invention provides a substation indoor fire hazard early warning device based on air ions, comprising:

[0006] An air sampling network for collecting real-time air samples from the protected area;

[0007] A filtration system, including multiple filter layers, is used to remove interfering substances from the air sample;

[0008] a mixing pre-conditioning chamber for temperature and / or humidity conditioning of the filtered air sample;

[0009] A cloud chamber is used to detect the number of cloud droplets formed by pyrolyzed ions in the pre-treated air sample;

[0010] A data analysis system is used to analyze the number of cloud droplets received and determine whether an alarm needs to be issued based on a preset threshold;

[0011] The alarm system is used to automatically send out sound and light alarm signals when the data analysis system detects fire hazards.

[0012] Optionally, the interfering substance includes dust and / or water mist.

[0013] Optionally, the filtration system includes a filtration chamber connecting the outlet of the air sampling pipe network to the inlet of the mixing pretreatment chamber, and a plurality of filtration layers located in the filtration chamber.

[0014] Optionally, the filter layers are sequentially a first filter layer, a second filter layer, and a third filter layer in a direction away from the outlet of the air sampling pipe network;

[0015] Among them, the filter pore size a of the first filter layer>the filter pore size b of the second filter layer≥the filter pore size c of the third filter layer.

[0016] Optionally, the filter pore diameter a=3 microns, the filter pore diameter b=1 micron, and the filter pore diameter c<1 micron.

[0017] Optionally, a heating module and a humidifying module are provided inside the mixing pretreatment chamber.

[0018] Optionally, a first sliding switch is provided between the outlet of the mixing pretreatment chamber and the inlet of the cloud chamber;

[0019] When the temperature and humidity of the air sample in the mixing pretreatment chamber reach a preset range, the first sliding switch is turned on to connect the mixing pretreatment chamber and the cloud chamber.

[0020] Optionally, the outlet of the cloud chamber is connected to a second sliding switch.

[0021] Optionally, the mixing pretreatment chamber is connected to a spare air chamber.

[0022] Optionally, also include:

[0023] The communication module is used to transmit the detection results to the monitoring center or a designated mobile device.

[0024] The beneficial effect of the present invention is that it provides a substation indoor fire hazard early warning device based on air ions, and the working process is as follows: the device first collects air samples in real time through the air sampling pipe network arranged at the key position of the substation room, and then passes through the multi-layer filtration system to remove interfering substances such as dust, oil mist, and harmful gases therein to ensure the purity of the sample. Then, the filtered air sample enters the mixed pretreatment chamber, where the temperature and humidity are adjusted to adapt to the detection conditions of the cloud chamber. The adjusted sample is introduced into the cloud chamber, and the pyrolytic ions in the cloud chamber contact with the coolant to form cloud droplets. The number of cloud droplets is related to the concentration of pyrolytic ions in the air, thereby reflecting the degree of fire hazard. Finally, the number of cloud droplets is detected by the sensor in the cloud chamber and transmitted to the data analysis system. The system analyzes according to the preset threshold and algorithm. If the number of detected droplets exceeds the threshold, an alarm is immediately issued to notify the operation and maintenance personnel to take corresponding measures. This coherent process realizes the timely monitoring and early warning of fire hazards in the substation room.

[0025] Therefore, the air ion-based substation indoor fire hazard early warning device provided by the present invention can identify fire hazards earlier and more accurately, reduce the false alarm rate, and improve the fire safety level of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic structural diagram of an indoor fire hazard warning device for a substation based on air ions provided in an embodiment.

[0028] In the figure:

[0029] 1. Air sampling network;

[0030] 2. Filtration system; 201. first filter layer; 202. second filter layer; 203. third filter layer;

[0031] 3. Mixing pretreatment chamber;

[0032] 4. Cloud chamber;

[0033] 5. First slide switch;

[0034] 6. Second slide switch;

[0035] 7. Spare air chamber. DETAILED DESCRIPTION

[0036] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0037] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0038] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0039] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0040] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0041] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0042] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0043] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms such as "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the technical field to which the present invention belongs, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0044] See also Figure 1 The present invention provides a substation indoor fire hazard early warning device based on air ions, comprising:

[0045] An air sampling pipe network 1, used for collecting air samples from the protected area in real time;

[0046] A filter system 2, comprising multiple filter layers, for removing interfering substances from the air sample;

[0047] A mixing pre-treatment chamber 3, used for adjusting the temperature and / or humidity of the filtered air sample;

[0048] Cloud chamber 4, used to detect the number of cloud droplets formed by thermally released ions in the pre-treated air sample;

[0049] A data analysis system is used to analyze the number of cloud droplets received and determine whether an alarm needs to be issued based on a preset threshold;

[0050] The alarm system is used to automatically send out sound and light alarm signals when the data analysis system detects fire hazards.

[0051] The substation indoor fire hazard early warning device based on air ions provided in this embodiment has the following working process: the device first collects air samples in real time through the air sampling pipe network 1 arranged at the key position of the substation indoor, and these samples are then passed through the multi-layer filtration system 2 to remove interfering substances such as dust, oil mist, and harmful gases to ensure the purity of the samples. Then, the filtered air samples enter the mixed pretreatment chamber 3, where the temperature and humidity are adjusted to adapt to the detection conditions of the cloud chamber 4. The adjusted samples are introduced into the cloud chamber 4, and the pyrolytic ions in the cloud chamber 4 contact with the coolant to form cloud droplets. The number of cloud droplets is related to the concentration of pyrolytic ions in the air, thereby reflecting the degree of fire hazard. Finally, the number of cloud droplets is detected by the sensor in the cloud chamber 4 and transmitted to the data analysis system. The system analyzes according to the preset threshold and algorithm. If the number of water droplets detected exceeds the threshold, an alarm is immediately issued to notify the operation and maintenance personnel to take corresponding measures. This coherent process realizes the timely monitoring and early warning of fire hazards in the substation indoor.

[0052] Therefore, the air ion-based substation indoor fire hazard early warning device provided by the present invention can identify fire hazards earlier and more accurately, reduce the false alarm rate, and improve the fire safety level of the substation.

[0053] In this embodiment, the cloud chamber 4 is a Wilson cloud chamber. The Wilson cloud chamber 4 needs to have condensation nuclei and gasified liquid substances in order to detect particles, and liquids such as ionized water or alcohol need to be added to the cloud chamber 4.

[0054] With the development, it is now possible to add no liquid consumables in the cloud chamber 4, and the advantages of no consumables and full adaptability of the cloud chamber 4 detection are achieved by combining saturated air humidity technology with modern electronic circuit technology. Specifically, the working principle and specific structure of the cloud chamber 4 belong to the prior art, and this embodiment will not be described in detail.

[0055] Specifically, the interfering substances include dust and / or water mist.

[0056] In this embodiment, the filtering system 2 includes a filtering chamber connecting the outlet of the air sampling pipe network 1 to the inlet of the mixing pretreatment chamber 3, and a plurality of filtering layers located in the filtering chamber.

[0057] By specifically describing the structure of the filter system 2, including the filter chamber and the multiple filter layers, it is helpful to improve the processing efficiency and quality of the air sample, ensure that the air sample received by the pretreatment chamber meets the detection requirements, and thus improve the performance of the entire early warning device.

[0058] Optionally, the filter layers are, in order, a first filter layer 201, a second filter layer 202, and a third filter layer 203 in a direction away from the outlet of the air sampling pipe network 1;

[0059] The pore size a of the first filter layer 201 > the pore size b of the second filter layer 202 ≥ the pore size c of the third filter layer 203 .

[0060] By designing filter layers with different pore sizes, we can achieve step-by-step filtration of particles of different sizes in air samples, effectively improving the filtration efficiency, reducing the interference of large particles on subsequent detection, and ensuring the accuracy of the test results.

[0061] Furthermore, the filter pore diameter a=3 microns, the filter pore diameter b=1 micron, and the filter pore diameter c<1 micron.

[0062] The filter pore size is specified to help precisely control the filtration effect and ensure that even tiny particles can be effectively filtered, thereby further improving the purity of air samples and enhancing the sensitivity of fire hazard detection.

[0063] In this embodiment, a heating module and a humidifying module are provided inside the mixing pretreatment chamber 3. By providing the heating module and the humidifying module in the mixing pretreatment chamber 3, the temperature and humidity of the air sample can be more accurately controlled, providing stable sample conditions for the cloud chamber 4 detection, and improving the repeatability and reliability of the detection results.

[0064] Optionally, a first sliding switch 5 is provided between the outlet of the mixing pretreatment chamber 3 and the inlet of the cloud chamber 4; the outlet of the cloud chamber 4 is connected to a second sliding switch 6. When the temperature and humidity of the air sample in the mixing pretreatment chamber 3 reach a preset range, the first sliding switch 5 is turned on to connect the mixing pretreatment chamber 3 and the cloud chamber 4.

[0065] By setting the first sliding switch 5, it is ensured that the sample will enter the cloud chamber 4 for detection only when the temperature and humidity of the air sample reach the preset range, thereby avoiding false detection due to sample condition failure and improving the accuracy of the early warning system.

[0066] A second sliding switch 6 is provided at the outlet of the cloud chamber 4 to help control the detection process, prevent the direct discharge of untreated air samples, protect the experimental environment, and also facilitate the maintenance and cleaning of the cloud chamber 4.

[0067] In this embodiment, the mixing pretreatment chamber 3 is connected to a spare air chamber 7. By connecting the spare air chamber 7, the ability to continue to supply processed air samples is provided when the pretreatment chamber needs maintenance or fails, ensuring the continuous operation of the early warning system without interruption due to problems with a single component.

[0068] Optionally, the air ion-based substation indoor fire hazard warning device also includes a communication module, which is used to transmit the detection results to a monitoring center or a designated mobile device (such as a mobile phone or a work handheld device, etc.).

[0069] The detection results can be transmitted to the monitoring center or mobile device in real time, which improves the timeliness of information transmission and facilitates remote monitoring and management, thereby speeding up the response speed and improving the overall safety management and emergency handling capabilities of the substation.

[0070] In summary, the substation indoor fire hazard early warning device based on air ions provided in this embodiment has the following advantages:

[0071] 1. Early warning capability: Through advanced cloud chamber 4 technology, the device can issue an early warning when an object is overheated but has not yet produced visible smoke, achieving extremely early detection of fire hazards. This greatly increases the time window for fire warning, providing valuable time for timely measures to prevent the spread of fire.

[0072] 2. High sensitivity and low false alarm rate: This device uses a multi-layer filtration system 2 and advanced hybrid pre-treatment technology to ensure that the air entering the cloud chamber 4 is pure and avoids the influence of interfering substances such as dust and water mist. At the same time, through intelligent data analysis algorithms, it can accurately distinguish between pyrolysis ions and non-fire factors, effectively reducing false alarms.

[0073] 3. Data management: This device can digitize the fire hazards detected and transmit them to the monitoring center in real time through the communication module. Through the remote monitoring system, operation and maintenance personnel can understand the status of each monitoring point in the substation in real time, discover and deal with potential fire hazards in a timely manner, and improve management efficiency and response speed.

[0074] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A substation indoor fire hazard early warning device based on air ions, characterized in that: include: An air sampling pipe network (1) for collecting air samples from the protected area in real time; A filtration system (2) comprising multiple filter layers for removing interfering substances from the air sample; A mixing pre-treatment chamber (3) for adjusting the temperature and / or humidity of the filtered air sample; A cloud chamber (4) is used to detect the number of cloud droplets formed by thermally released ions in the pre-treated air sample; A data analysis system is used to analyze the number of cloud droplets received and determine whether an alarm needs to be issued based on a preset threshold; The alarm system is used to automatically send out sound and light alarm signals when the data analysis system detects fire hazards.

2. The substation indoor fire hazard early warning device based on air ions according to claim 1 is characterized in that: The interfering substances include dust and / or water mist.

3. The indoor fire hazard early warning device for a substation based on air ions according to claim 1 is characterized in that: The filtering system (2) comprises a filtering chamber connecting the outlet of the air sampling pipe network (1) to the inlet of the mixing pretreatment chamber (3), and a plurality of filtering layers located in the filtering chamber.

4. The indoor fire hazard early warning device for a substation based on air ions according to claim 3 is characterized in that: The filter layers are, in order, a first filter layer (201), a second filter layer (202), and a third filter layer (203) in a direction away from the outlet of the air sampling pipe network (1); The filter pore size a of the first filter layer (201)>the filter pore size b of the second filter layer (202)≥the filter pore size c of the third filter layer (203).

5. The indoor fire hazard early warning device for a substation based on air ions according to claim 4 is characterized in that: The filter pore size a=3 microns, the filter pore size b=1 micron, and the filter pore size c<1 micron.

6. The air ion-based early warning device for fire hazards in substations according to claim 1 is characterized in that: A heating module and a humidifying module are provided inside the mixing pretreatment chamber (3).

7. The air ion-based early warning device for fire hazards in a transformer substation according to claim 6, characterized in that: A first sliding switch (5) is provided between the outlet of the mixing pretreatment chamber (3) and the inlet of the cloud chamber (4); When the temperature and humidity of the air sample in the mixing pretreatment chamber (3) both reach a preset range, the first sliding switch (5) is turned on to connect the mixing pretreatment chamber (3) and the cloud chamber (4).

8. The air ion-based early warning device for fire hazards in a transformer substation according to claim 7, characterized in that: The outlet of the cloud chamber (4) is connected to a second sliding switch (6).

9. The air ion-based early warning device for fire hazards in a transformer substation according to claim 1, characterized in that: The mixing pretreatment chamber (3) is connected to a spare air chamber (7).

10. The substation indoor fire hazard early warning device based on air ions according to claim 1, characterized in that: Also includes: The communication module is used to transmit the detection results to the monitoring center or a designated mobile device.

Images