Measurement type pyrolysis particle fire detector for power system

Abstract

The utility model discloses a measurement type pyrolysis particle fire hazard detector for an electric power system. The measurement type pyrolysis particle fire hazard detector comprises a sampling pipe mechanism, a detection main body mechanism and at least one self-cleaning filtering mechanism. The measurement type pyrolysis particle fire detector for the electric power system has an excellent detection effect aiming at the situation that the electric power system is blocked or is hidden in position, and open fire or smoke is difficult to recognize or detect, the external sampling pipe mechanism is more accurate in smoke recognition, and multi-branch detection is more efficient. By means of the arrangement of the two-way fan, active air suction type extremely-early-stage accurate detection can be achieved, the filtering effect can be achieved by means of the arrangement of the self-cleaning filtering mechanism, and impurity interference is avoided. Through cooperation of the bidirectional fan and the self-cleaning filtering mechanism, the self-cleaning effect of the self-cleaning filtering mechanism can be achieved, the service life of the fire detector is prolonged, the maintenance cost is saved, and the fire detector is reasonable in structure, convenient to install and easy to use.

Description

Technical Field

[0001] This utility model relates to the field of electrical fire monitoring, and in particular to a measurement-type pyrolysis particle fire detector for power systems. Background Technology

[0002] The motor system consists of the motor body, insulation cotton covering the motor body, and an outer casing. When the motor is running, the lubricating oil inside the casing will seep into the insulation cotton. The frictional heat generated by long-term operation can easily cause the oil and cotton to burn, leading to a fire and endangering equipment safety.

[0003] Existing flame and temperature detection equipment cannot fully cover the detection range of motor fires, and the detection is delayed, making it impossible to provide early warning in the very early stages of a fire. Conventional pyrolysis particle fire detectors are easily interfered with by the components of insulation cotton, affecting the detector's detection performance and leading to missed alarms and malfunctions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a measurement-type pyrolysis particle fire detector for power systems.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a measurement-type pyrolysis particle fire detector for power systems, which includes a sampling tube mechanism, a detection body mechanism and at least one self-cleaning filter mechanism.

[0006] The sampling tube mechanism is used to collect the sampling gas;

[0007] The detection main body is connected to the output end of the sampling tube mechanism. The detection main body includes a detection component, a control component, and a bidirectional fan. The detection component is used to detect the sampled gas. The control component is electrically connected to the detection component and the bidirectional fan. The bidirectional fan is used to control the intake and exhaust of the sampling tube mechanism.

[0008] The self-cleaning filter mechanism is connected to the input end of the sampling tube mechanism. When the sampling tube mechanism draws in air, the self-cleaning filter mechanism filters the sampled gas. When the sampling tube mechanism releases air, the self-cleaning filter mechanism cleans itself using the airflow provided by the bidirectional fan.

[0009] In some embodiments, the detection body further includes a housing and a ventilation duct, the housing being provided with a sampling interface, an electrical socket, and an exhaust interface;

[0010] The two ends of the ventilation duct are respectively connected to the sampling interface and the bidirectional fan, one end of the bidirectional fan is connected to the exhaust interface, and the detection component is installed on the ventilation duct;

[0011] The sampling interface is equipped with a filter.

[0012] In some embodiments, the detection assembly includes a wind speed detector and a sensor assembly, the sensor assembly including a temperature sensor, an electrochemical sensor, and a laser particle sensor.

[0013] In some embodiments, the control component includes a control circuit, a running indicator light, a fault indicator light, an alarm indicator light, and a display screen, wherein the running indicator light, the fault indicator light, the alarm indicator light, and the display screen are all electrically connected to the control circuit.

[0014] In some embodiments, the sampling tube mechanism includes an inlet adapter, an intermediate adapter, and a sampling tube body;

[0015] The two ends of the sampling tube body are respectively connected to the inlet adapter and the intermediate adapter. One end of the inlet adapter is connected to the sampling interface, and one end of the intermediate adapter is connected to the self-cleaning filter mechanism.

[0016] In some embodiments, the self-cleaning filtration mechanism includes an air hose adapter, an outer cover, and a filter screen;

[0017] The tracheal adapter is used to connect with the intermediate adapter, the outer cover is connected to the bottom of the tracheal adapter, the filter screen is connected to the inside of the outer cover, and the sampling tube body is connected to the filter screen.

[0018] In some embodiments, the self-cleaning filter mechanism further includes a support frame, an elastic element, and a brush plate, and the inner wall of the outer cover is provided with a sliding groove;

[0019] The support frame is connected to the inner wall of the outer cover, and the two ends of the elastic element are respectively connected to the support frame and the brush plate. The brush plate is mounted on the slide groove and can move along the height direction of the outer cover.

[0020] In some embodiments, the brush plate is provided with an inner brush and an outer brush, the inner brush being used to clean the filter screen and the outer brush being used to clean the outer cover.

[0021] In some embodiments, the outer cover is provided with a passage hole, and the filter screen is provided with a filter hole.

[0022] In some embodiments, the power system measurement pyrolysis particle fire detector further includes a mounting mechanism, which includes fasteners, an adapter plate, and a mounting rail.

[0023] The housing is connected to the adapter plate via the fasteners, the adapter plate is connected to the mounting rail, and the mounting rail is used to connect to an external fixing mechanism.

[0024] The present invention offers the following advantages: This power system measurement-type pyrolysis particle fire detector is highly effective in detecting open flames or smoke in situations where power systems are obstructed or concealed, making detection difficult. The external sampling tube mechanism provides more accurate smoke identification, and the multi-path detection is more efficient. Utilizing a bidirectional fan, it achieves early and accurate detection through active air intake. The self-cleaning filter mechanism effectively filters out impurities. The combination of the bidirectional fan and the self-cleaning filter mechanism enables self-cleaning, extending the detector's lifespan, reducing maintenance costs, and providing a reasonable structure for easy installation and use. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of a measurement-type pyrolysis particle fire detector for power systems in some embodiments of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the self-cleaning filter mechanism in some embodiments of this utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the self-cleaning filter mechanism in some embodiments of this utility model;

[0029] Figure 4 This is a schematic diagram of the outer cover in some embodiments of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the filter screen in some embodiments of this utility model;

[0031] Figure 6 This is a schematic diagram of the installation mechanism in some embodiments of this utility model. Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0033] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] Please see Figures 1 to 6 This utility model discloses a measurement-type pyrolysis particle fire detector for power systems. The pyrolysis particle fire detector is mainly used to detect fires caused by oil leaks and insulation material-like accessories in various motors within power systems. It provides early warning of fires through threshold judgment. When oil leaks occur in turbine-type power equipment, the oil reacts with combustibles and evaporates upon heating, decomposing into smoke particles and gas molecules. Using this detector, an alarm can be triggered before visually visible smoke is generated, achieving very early monitoring of equipment oil leaks and preventing fires before they occur.

[0035] like Figure 1As shown, the power system's measurement-type pyrolysis particle fire detector includes a sampling tube mechanism 1, a detection body mechanism 2, and at least one self-cleaning filter mechanism 3. The sampling tube mechanism 1 is used to collect sampled gas; the detection body mechanism 2 is connected to the output end of the sampling tube mechanism 1, and includes a detection component 21, a control component 22, and a bidirectional fan 23. The detection component 21 is used to detect the sampled gas, and the control component 22 is electrically connected to both the detection component 21 and the bidirectional fan 23. The bidirectional fan 23 is used to control the intake and exhaust of the sampling tube mechanism 1; the self-cleaning filter mechanism 3 is connected to the input end of the sampling tube mechanism 1. When the sampling tube mechanism 1 is intake, the self-cleaning filter mechanism 3 filters the sampled gas; when the sampling tube mechanism 1 is exhausting gas, the self-cleaning filter mechanism 3 uses the airflow provided by the bidirectional fan 23 to clean itself.

[0036] In this embodiment, the self-cleaning filter mechanism 3, the sampling tube mechanism 1, and the detection body mechanism 2 are connected in sequence. The self-cleaning filter mechanism 3 and the sampling tube mechanism 1 are placed in the oil-prone parts of the motor, buried in the gap between the motor body and the insulation cotton. The detection body mechanism 2 is placed around the motor system to display the temperature, oil particle concentration, running status, fault status, and fire alarm status of the motor in real time. The number of self-cleaning filter mechanisms 3 can be one or more. When only one sampling gas needs to be collected from a single location, only one self-cleaning filter mechanism 3 is used. When sampling gas needs to be collected from multiple locations, multiple self-cleaning filter mechanisms 3 are required. Furthermore, the bidirectional fan 23 is a bidirectional flow forward and reverse fan, which can operate in both forward and reverse modes to control the intake and exhaust of the sampling tube mechanism 1. When the sampling tube mechanism 1 is in the intake state, the sampling gas enters the detection body mechanism 2 from the sampling tube mechanism 1 for detection. The bidirectional fan 23 can adjust the suction power according to the sampling conditions to maintain the wind speed and ensure the accuracy of the sampling.

[0037] Understandably, this power system-based pyrolysis particle fire detector is highly effective in detecting situations where power systems are obstructed or located in concealed areas, making it difficult to identify or detect open flames or smoke. The external sampling tube mechanism 1 provides more accurate smoke identification, and the multi-path detection is more efficient. Utilizing the bidirectional fan 23, it achieves active, early-stage, and accurate detection. The self-cleaning filter mechanism 3 ensures effective filtration, preventing interference from impurities. The combination of the bidirectional fan 23 and the self-cleaning filter mechanism 3 enables the self-cleaning function of the filter mechanism, extending the fire detector's lifespan, reducing maintenance costs, and providing a reasonable structure for easy installation and use.

[0038] For example Figure 1As shown, the detection main body 2 also includes a housing 24 and a ventilation duct 25. The housing 24 is provided with a sampling interface 241, an electrical socket 242, and an exhaust interface 243. The housing 24 can be made of metal or flame-retardant ABS material. The two ends of the ventilation duct 25 are respectively connected to the sampling interface 241 and the bidirectional fan 23, and one end of the bidirectional fan 23 is connected to the exhaust interface 243. The detection component 21 is set on the ventilation duct 25. In this embodiment, there are two electrical sockets 242, which are a power port and an I / O port, respectively. The electrical sockets 242 can be waterproof connectors or aviation connectors. An external power supply line can supply power to the electrical components inside the housing 24 through the electrical sockets 242, so that the detection component 21, the control component 22, and the bidirectional fan 23 can be powered normally. The exhaust port 243 is located on the outer side of the housing 24. The exhaust port 243 can be a combination of louvers and filter, with the filter inside the exhaust port 243 and the louvers attached to the outer side of the housing 24 by means of clips.

[0039] Furthermore, the sampling interface 241 is provided with a filter element 2411 for filtering the sampled gas. More specifically, the sampling interface 241 is located on the outer side of the housing 24. The filter element 2411 can be a combination of a filter cartridge and a filter cartridge cap. The filter cartridge and the filter cartridge cap can be connected by a snap-fit ​​method. By rotating the cap in different directions, the filter cartridge can be inserted or removed, making it convenient to replace the filter cartridge.

[0040] In addition, the detection component 21 includes a wind speed detector 211 and a sensor component 212. Specifically, the wind speed detector 211 can determine whether the fire detector is faulty by detecting the incoming airflow velocity and send a fault signal to the control component 22 for display. When the incoming airflow velocity of the sampled gas is lower than the first set threshold airflow velocity, the detector reports a fault. The bidirectional fan 23 operates according to the parameters measured by the wind speed detector 211. If the measured parameter is greater than the first set threshold but less than the second set threshold airflow velocity, the bidirectional fan 23 continues to operate. When the measured parameter reaches the second set threshold, the bidirectional fan 23 stops driving, and the sampled gas detection is valid. The sensor component 212 includes a temperature sensor, an electrochemical sensor, and a laser particle sensor, which can detect parameters such as the temperature, gas concentration, and particle concentration of the sampled gas flow. The diversified design of the detection parameters ensures high detection sensitivity. There is a fire risk after the detection equipment leaks oil. When the oil is heated, and the temperature is close to its flash point but far below its ignition point, the particle concentration surges, triggering an alarm. The detection sequence of the sensor component 212 is: temperature sensor, electrochemical sensor, and laser particle sensor.

[0041] The sampled gas enters the sampling interface 241, wind speed detector 211 and sensor assembly 212 in sequence through the sampling tube mechanism 1. Part of the airflow during the detection process and the airflow after detection are discharged from the housing 24 through the bidirectional fan 23 and the exhaust interface 243.

[0042] For example Figure 1 As shown, the control component 22 includes a control circuit 221, a running indicator light 222, a fault indicator light 223, an alarm indicator light 224, and a display screen 225. The running indicator light 222, fault indicator light 223, alarm indicator light 224, and display screen 225 are all electrically connected to the control circuit 221. Specifically, the alarm detection logic of this fire detector is as follows: if any detection value of any sensor reaches the set alarm threshold, a fire alarm signal is sent to the control circuit 221, and then displayed on the display screen 225, indicating that the fire detector has reported a fire alarm; if the detection values ​​of any sensor do not reach the set alarm threshold, the parameters are allocated according to the detection order, and the weights of each parameter are merged from smallest to largest to generate a new corresponding parameter. If any parameter exceeds the aforementioned set alarm threshold, a fire alarm signal is issued.

[0043] The wind speed detector 211, sensor assembly 212, and control circuit 221 are located in a separate chamber, while the bidirectional fan 23 and exhaust port 243 are located in another chamber.

[0044] In addition, the control circuit 221 is located inside the housing 24. Its power supply port and signal acquisition port are connected to the electrical socket 242 via leads. The power supply terminals of the wind speed detector 211 and the bidirectional fan 23 are both electrically connected to the control circuit 221. The display screen 225 displays operating parameters, alarms, faults, and settings. The operation indicator 222, fault indicator 223, and alarm indicator 224 respectively display the operating, fault, and alarm statuses, providing indications through lighting methods such as constant illumination or intermittent flashing. Furthermore, the control circuit 221 is equipped with a power drive module and an information setting module. The power drive module can supply power to the components inside the housing 24 via an external power supply, and the information setting module can configure the displayed information, sensor-acquired parameters, alarm information, and the operating status of the fire detectors.

[0045] The sampling tube mechanism 1 includes an inlet adapter 11, an intermediate adapter 12, and a sampling tube body 13. The two ends of the sampling tube body 13 are connected to the inlet adapter 11 and the intermediate adapter 12, respectively. One end of the inlet adapter 11 is connected to the sampling interface 241, and one end of the intermediate adapter 12 is connected to the self-cleaning filter mechanism 3. Both the inlet adapter 11 and the intermediate adapter 12 can be made of metal and can have a variable diameter structure, allowing for the fitting of sampling tube bodies 13 with multiple diameters. The sampling tube body 13 is a hollow tube with high polymer heat resistance and a certain strength. Furthermore, the intermediate adapter 12 can be a straight-through adapter or a three-way adapter. When only one location needs to be sampled, only one self-cleaning filter mechanism 3 is used, and in this case, the intermediate adapter 12 is a straight-through adapter. When multiple locations need to be sampled, multiple self-cleaning filter mechanisms 3 are required, and in this case, the intermediate adapter 12 is a three-way adapter.

[0046] like Figure 2 As shown, the self-cleaning filter mechanism 3 includes a tubing adapter 31, an outer cover 32, and a filter screen 33. The tubing adapter 31 is used to connect to the intermediate adapter 12. The outer cover 32 is connected to the bottom of the tubing adapter 31, and the filter screen 33 is connected inside the outer cover 32. The sampling tube body 13 communicates with the filter screen 33. The tubing adapter 31 and the intermediate adapter 12 can be threaded together to ensure a tight seal. The outer cover 32 has a through hole 322, and the filter screen 33 has a filter hole 331. The through hole 322 allows the sampling gas to pass through, and the filter hole 331 performs preliminary filtration of the sampling gas.

[0047] like Figures 2 to 5As shown, the self-cleaning filter mechanism 3 also includes a support frame 34, an elastic element 35, and a brush disc 36. A groove 321 is provided on the inner wall of the outer cover 32. The support frame 34 is connected to the inner wall of the outer cover 32. The two ends of the elastic element 35 are respectively connected to the support frame 34 and the brush disc 36. The brush disc 36 is mounted on the groove 321 and can move along the height direction of the outer cover 32. The brush disc 36 is provided with an inner brush 361 and an outer brush 362. The inner brush 361 is used to clean the filter screen 33, and the outer brush 362 is used to clean the outer cover 32. The elastic element 35 can be a spring. Specifically, the support frame 34 can be welded to the inner wall of the outer cover 32, and the brush disc 36 can move within the groove 321. The filter screen 33 can be made of metal, and the bottom of the filter screen 33 is welded to the outer cover 32 or locked with screws. Understandably, to isolate interfering substances such as insulation cotton, dust, and moisture at the inlet end of the sampling tube body 13, a self-cleaning filter mechanism 3 is installed for filtration. When the self-cleaning filter mechanism 3 is in the blowing state, the brush disc 36 is subjected to the air force from the bidirectional fan 23, causing the elastic element 35 to move downward. At this time, the inner brush 361 contacts the outer wall surface of the filter screen 33 to clean the filter screen 33, and the outer brush 362 contacts the inner wall surface of the outer cover 32 to clean the outer cover 32. When the blowing stops, the brush disc 36 rebounds under the elastic action of the elastic element 35. When the self-cleaning filter mechanism 3 is in the suction state, the elastic element 35 is in the contracted state, and the sampling gas enters the sampling tube body 13 through the filter screen 33. The self-cleaning filter mechanism 3, in the blowing state, has a self-cleaning function, avoiding frequent disassembly and assembly caused by replacing the filter screen 33, saving manpower and extending the service life of the fire detector.

[0048] like Figure 6As shown, the power system measurement-type pyrolysis particle fire detector also includes a mounting mechanism 4, which includes fasteners 41, an adapter plate 42, and a mounting rail 43. The housing 24 is connected to the adapter plate 42 via fasteners 41, and the adapter plate 42 is connected to the mounting rail 43. The mounting rail 43 is used to connect to an external fixing mechanism 5. This power system measurement-type pyrolysis particle fire detector can be fixed to the external fixing mechanism 5 via the mounting mechanism 4, where the fasteners 41 can be bolts. Specifically, the installation and use method of this fire detector is as follows: the housing 24 is connected to the adapter plate 42 via fasteners 41, and then the adapter plate 42 is connected to the mounting rail 43, which is mounted on the external fixing mechanism 5. Then, the sampling tube mechanism 1 is used to connect the self-cleaning filter mechanism 3 and the detection body mechanism 2, and a power cord is connected to the electrical socket 242 for power supply. At this point, the host computer is used to set the display information and alarm thresholds of the fire detector. After setting, the host computer is removed, and the fire detector enters independent working mode, setting the bidirectional fan 23 to intake mode. After the fire detector has been running for a period of time, the bidirectional fan 23 is set to exhaust mode, allowing the self-cleaning filter mechanism 3 to perform self-cleaning.

[0049] The working principle of the measurement-type pyrolysis particle fire detector used in this power system is as follows: The sampling tube body 13 collects gas from inside the electrical equipment cabinet. This gas contains interfering particles such as dust and water vapor. Therefore, these interfering particles must be filtered multiple times before entering the detection body 2 to remove impurities. The bidirectional fan 23 first draws the sampled gas into the self-cleaning filter mechanism 3, where it undergoes a first filtration through the outer cover 32 and filter screen 33. The filtered gas then undergoes a second filtration through the filter element 2411 on the sampling interface 241. After the second filtration, the sampled gas enters the wind speed detector 211 and sensor assembly 212 inside the housing 24 for detection. After detection, it is discharged outside the housing 24 through the exhaust interface 243. To prevent passive intake and interference from external smoke and dust, the exhaust interface 243 is designed as a combination of louvers and filters. This structure effectively reduces interference and allows for the removal and replacement of the filters, ensuring detection accuracy and preventing false alarms. This fire detector can accurately measure changes in particle concentration before an oil fire and, through a certain algorithm, provide early warning of oil fires while eliminating the influence of the surrounding environment.

[0050] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present utility model should fall within the scope of the claims of the present utility model.

Claims

1. A measuring pyrolytic particle fire detector for electric power systems, characterized in that, The sampling pipe mechanism (1), the detection main body mechanism (2) and at least one self-cleaning filter mechanism (3) are included. The sampling pipe mechanism (1) is used for collecting sampling gas. The detection main body mechanism (2) is connected to the output end of the sampling pipe mechanism (1), and the detection main body mechanism (2) includes a detection assembly (21), a control assembly (22) and a bidirectional fan (23), the detection assembly (21) is used for detecting sampling gas, the control assembly (22) and the detection assembly (21) and the bidirectional fan (23) are electrically connected, and the bidirectional fan (23) is used for controlling the air suction and air exhaust of the sampling pipe mechanism (1). The self-cleaning filter mechanism (3) is connected to the input end of the sampling pipe mechanism (1), when the sampling pipe mechanism (1) is air-sucked, the self-cleaning filter mechanism (3) is used for filtering the sampling gas, and when the sampling pipe mechanism (1) is air-exhausted, the self-cleaning filter mechanism (3) is cleaned by the wind power provided by the bidirectional fan (23).

2. The measured pyrolytic particle smoke detector for electric power systems according to claim 1, characterized in that, The detection main body mechanism (2) further includes a shell (24) and a ventilation pipeline (25), the shell (24) is provided with a sampling interface (241), an electrical socket (242) and an exhaust interface (243); Both ends of the ventilation pipeline (25) are connected to the sampling interface (241) and the bidirectional fan (23), one end of the bidirectional fan (23) is connected to the exhaust interface (243), and the detection assembly (21) is arranged on the ventilation pipeline (25); The sampling interface (241) is provided with a filter (2411).

3. The measured pyrolytic particle smoke detector for electric power systems according to claim 1, characterized in that, The detection assembly (21) includes a wind speed detector (211) and a sensor assembly (212), and the sensor assembly (212) includes a temperature sensor, an electrochemical sensor and a laser particle sensor.

4. The measured pyrolytic particle smoke detector for electric power systems according to claim 1, characterized in that, The control assembly (22) includes a control circuit (221), a running indicator (222), a fault indicator (223), an alarm indicator (224) and a display screen (225), and the running indicator (222), the fault indicator (223), the alarm indicator (224) and the display screen (225) are electrically connected with the control circuit (221).

5. The measured pyrolytic particle smoke detector for electric power systems according to claim 2, characterized in that, The sampling pipe mechanism (1) includes an inlet adapter (11), an intermediate adapter (12) and a sampling pipe body (13); Both ends of the sampling pipe body (13) are connected to the inlet adapter (11) and the intermediate adapter (12), one end of the inlet adapter (11) is connected to the sampling interface (241), and one end of the intermediate adapter (12) is connected to the self-cleaning filter mechanism (3).

6. The measured pyrolytic particle smoke detector for electric power systems according to claim 5, characterized in that, The self-cleaning filter mechanism (3) includes a trachea adapter (31), an outer cover (32) and a filter screen (33). The trachea adapter (31) is used for connecting with the intermediate adapter (12), the cover (32) is connected at the bottom of the trachea adapter (31), the filter screen (33) is connected inside the cover (32), and the sampling tube body (13) communicates with the filter screen (33).

7. A measured thermal pyrolytic particle fire detector for electrical power systems according to claim 6, characterised in that, The self-cleaning filtering mechanism (3) further comprises a support frame (34), an elastic member (35) and a brush disc (36), and a sliding groove (321) is arranged on the inner wall of the cover (32). The support frame (34) is connected to the inner wall of the cover (32), the two ends of the elastic member (35) are respectively connected to the support frame (34) and the brush disc (36), and the brush disc (36) is installed on the sliding groove (321) and can move along the height direction of the cover (32).

8. The measured pyrolytic particle smoke detector for electric power systems according to claim 7, characterized in that, The brush disc (36) is provided with an inner brush (361) and an outer brush (362), the inner brush (361) is used for cleaning the filter screen (33), and the outer brush (362) is used for cleaning the cover (32).

9. The measured pyrolytic particle smoke detector for electric power systems according to claim 7, characterized in that, The cover (32) is provided with a through hole (322), and the filter screen (33) is provided with a filter hole (331).

10. The measured pyrolytic particle smoke detector for electric power systems according to claim 2, characterized in that, The power system measurement type pyrolysis particle fire detector further comprises a mounting mechanism (4), the mounting mechanism (4) comprises a fastener (41), an adapter plate (42) and a mounting guide rail (43); The shell (24) is connected to the adapter plate (42) through the fastener (41), the adapter plate (42) is connected to the mounting guide rail (43), and the mounting guide rail (43) is used for being connected to an external fixing mechanism (5).

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