Automatic fire-fighting alarm fire extinguishing system and method used in box transformer substation

Abstract

The invention belongs to the technical field of transformers, and provides an automatic fire alarm and fire extinguishing system and method used in a box transformer substation. Comprising a control system, a temperature sensor, a smoke sensor, a camera, an image processing device, a cooling fan, a heat exchanger, an air conditioner and a fire extinguishing device. The states in the box transformer substation are divided into a first-level fire early warning event, a second-level fire early warning event and a third-level fire early warning event, and the control system controls different parts to act according to the early warning events of different levels. Different conditions in the transformer chamber are identified according to different signals sent by the three detection devices, fire hazards are found in time, the comprehensive judgment of the three detection signals can improve the judgment of the environment in the box to be more accurate, and fire early warning can be accurately carried out.

Description

Technical Field

[0001] The present application relates to the field of transformers, and in particular to an automatic fire alarm and fire extinguishing system and method for a box-type transformer. Background Art

[0002] Box transformers are widely used in new energy industries such as wind, solar and storage. The box transformers of large power stations are prone to overheating and burning when they are subjected to current loads exceeding their rated capacity for a long time. Some short-circuit faults inside box transformers can also cause equipment to burn. At present, some new energy box transformers are equipped with fire alarm systems, which can promptly alarm when a fire occurs in the box transformer, and remind the operation and maintenance personnel to cut off the fault point in time to prevent the disaster from expanding. The commonly used fire alarm systems in box transformers now include smoke detectors, temperature detectors, and alarm hosts. When a fire disaster occurs, the smoke detector can transmit a signal to the alarm host. After receiving the signal from the detector, it will determine whether it is a fire alarm and process it according to the preset logical rules. If it is an alarm signal, it will send out an audible and visual alarm to remind relevant personnel or the fire department.

[0003] The current technology has the following problems:

[0004] 1. Emergency response can only be carried out when fire disasters occur in box-type transformers, but fire hazards cannot be discovered in time and fire prediction and warning cannot be carried out;

[0005] 2. The functions are limited and cannot be linked with other protection systems in the box-type transformer;

[0006] 3. Judging whether a fire has occurred solely through the detection results of smoke detectors or temperature detectors may result in misjudgment and fail to provide accurate and timely warning of fires;

[0007] 4. After a fire is detected, only an alarm is issued to alert relevant personnel or the fire department, but the fire point cannot be dealt with in a timely and targeted manner. Summary of the invention

[0008] The purpose of this application is to provide an automatic fire alarm and fire extinguishing system and method for a box-type transformer to solve the above technical problems existing in the prior art, mainly including the following aspects:

[0009] The first aspect of the present application provides an automatic fire alarm and fire extinguishing system for a box transformer, including a control system, a temperature sensor, a smoke sensor, a camera, an image processing device, a cooling fan, a heat exchanger, an air conditioner, and a fire extinguishing device, wherein the image processing device is used to process an image captured by the camera:

[0010] The control system divides the status in the box-type transformer into: a first-level fire warning event, a second-level fire warning event and a third-level fire warning event according to the different statuses of the signal of the temperature sensor, the signal of the smoke sensor and the image signal processed by the image processing device.

[0011] When the control system detects the first-level fire warning event, it controls the cooling fan to be turned on; when the control system detects the second-level fire warning event, it controls the heat exchanger and the air conditioner to be turned on; when the control system detects the third-level fire warning event, it controls the non-fire power supply to be cut off and the fire extinguishing device to be started, and when the control detects the third-level fire warning event, it controls the image processing device to determine the coordinates of the fire point according to the image captured by the camera, and the control system controls the fire extinguishing device to automatically move and rotate to the position closest to the coordinates of the fire point to extinguish the fire according to the coordinates of the fire point.

[0012] Furthermore, the first-level fire warning event is: the temperature value detected by the temperature sensor reaches 70%-89% of a preset threshold, the smoke sensor signal is 0, and the image processing device recognizes that there is no fire signal.

[0013] Furthermore, the second-level fire warning event is: the temperature value detected by the temperature sensor reaches 70%-89% of the preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is no fire signal; or the temperature value detected by the temperature sensor reaches 90%-99% of the preset threshold, the smoke sensor signal is 0, and the image processing device recognizes that there is no fire signal.

[0014] Furthermore, the third-level fire warning event is: the temperature value detected by the temperature sensor reaches 90%-99% of the preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is no fire signal; or the temperature value detected by the temperature sensor is greater than or equal to the preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is a fire signal.

[0015] Furthermore, the fire extinguishing device includes a fire extinguisher, a pipe, a nozzle, a nozzle base, and a fastening sleeve. The nozzle is installed on the pipe through the nozzle base and the fastening sleeve. The nozzle moves along the pipe through a linear motion device and rotates through a rotating device.

[0016] Furthermore, the linear motion device includes a first motor and a pulley transmission device, the first motor can drive the pulley transmission device to rotate, the pulley transmission device is arranged on the surface of the pipeline, and the pulley transmission device is connected to the nozzle base.

[0017] Furthermore, the rotating device includes a rotating chassis, a second motor, a second gear, a first gear, and a third motor, the output shaft of the second motor is connected to the second gear, the second gear is meshed with the first gear, the output shaft of the first gear is connected to the nozzle, the rotating chassis includes two left and right mounting seats, the third motor is installed in the mounting seat, and the third motor is connected to the nozzle.

[0018] Furthermore, after the control system identifies the ignition point coordinates according to the image, it controls the nozzle to move linearly along the pipeline to the pipeline closest to the ignition point coordinates, and further controls the rotating device to rotate the nozzle to align with the ignition point coordinates.

[0019] Furthermore, it also includes electric shutters, which are arranged on the transformer box.

[0020] A second aspect of the present application provides an automatic fire alarm and fire extinguishing method in a box-type transformer, which adopts the automatic fire alarm and fire extinguishing system in a box-type transformer.

[0021] Compared with the prior art, this application has at least the following technical effects:

[0022] (1) The present application sets a temperature sensor, a smoke sensor and a camera. The control system combines the signals of the temperature sensor, the smoke sensor and the different states of the signals obtained after the image captured by the camera is processed to make a comprehensive judgment on the indoor conditions of the transformer. Different conditions in the transformer room are identified according to the different signals emitted by the three detection devices, and fire hazards are discovered in time. The comprehensive judgment of the three detection signals can reduce the error caused by the inaccuracy of one detection method, making the judgment of the environment inside the box more accurate, preventing huge losses or unnecessary alarms, and enabling accurate fire warnings.

[0023] (2) The present application is also provided with a fire extinguishing device, a cooling fan, a heat exchanger, and an air-conditioning electric shutter. According to the different states of the temperature sensor, the smoke sensor, and the images captured by the camera, the control system controls the operation of the cooling fan, the heat exchanger, the air-conditioning, or the fire extinguishing device, and selects different processing methods according to the different conditions detected by the detection device, so as to eliminate the fire hazard in time and effectively protect the box transformer. At the same time, the image processing device can accurately identify the fire point, and the control system can control the fire extinguishing device to extinguish the fire in a targeted and accurate manner, which not only ensures safety but also minimizes the damage to the equipment.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram showing the automatic fire alarm and fire extinguishing system in the box-type transformer in the present application is shown;

[0027] Figure 2 A schematic diagram showing a fire extinguishing device in the transformer room in the present application is shown;

[0028] Figure 3 The structural schematic diagram of the fire extinguisher in this application is shown;

[0029] Figure 4 The schematic diagram of the structure of the linear motion device and the rotational motion device in the present application is shown;

[0030] Figure 5 A schematic diagram showing the installation of the electric blinds in the transformer box in the present application is shown;

[0031] Figure 6 A schematic structural diagram of the electric blinds in the present application is shown.

[0032] In the figure:

[0033] 10. Fire extinguishing device; 11. Fire extinguisher; 111. Hook bolt; 112. Pressure gauge; 113. Container valve; 114. Electromagnet; 115. Union; 116. Elbow; 12. Pipeline; 121. Seal; 13. Sprinkler; 131. Sprinkler cover; 14. Sprinkler base; 15. Fastening sleeve; 151. First channel; 16. Fixed housing;

[0034] 20. Electrical cabinet;

[0035] 30. Linear motion device; 31. Pulley transmission device; 311. Pulley; 312. Track; 313. Transmission shaft; 314. First motor; 315. Sliding housing;

[0036] 40. Rotating device; 41. Rotating chassis; 42. Second motor; 43. Second gear; 44. First gear; 441. Second channel; 45. Third motor;

[0037] 50. Electric blinds; 51. Fourth motor; 52. Third gear; 53. Rack; 54. Rotating shaft; 55. Travel switch; 56. Shutter blades; 57. Frame; 58. Side cover; 59. Control switch. DETAILED DESCRIPTION

[0038] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0039] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0040] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0041] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0042] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0043] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be located "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0044] The terms used herein are only used to describe various examples and are not used to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprising" and "having" list the existence of the stated features, quantities, operations, components, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] The present application provides an automatic fire alarm and fire extinguishing system in a box transformer, which is installed in the transformer room, monitors multiple box transformers (hereinafter referred to as box transformers) in the transformer room, and promptly detects fire hazards and dangers, mainly including the following aspects:

[0048] The first aspect of the present application provides an automatic fire alarm and fire extinguishing system for a box transformer, such as Figure 1-Figure 6As shown, it includes a control system, a temperature sensor, a smoke sensor, a camera, an image processing device, a cooling fan, a heat exchanger, an air conditioner, and a fire extinguishing device, and the image processing device is used to process the image captured by the camera. Exemplarily, in the present application, the temperature sensor can be installed on the inner wall of the transformer room, specifically, it can be installed at the corresponding position of the component that is prone to fire, and the temperature of the position is measured. In some optional embodiments, there can be multiple temperature sensors, which are evenly installed on the inner wall of the transformer room, and can also be unevenly installed on the inner wall of the transformer room. For example, multiple temperature sensors can be installed at key positions that need to be monitored, and only one temperature sensor can be installed for other positions. The camera can be installed in the transformer room to facilitate observation of the situation in the entire transformer room, such as timely detection of whether there are fire points in the high-voltage side cable terminal, the low-voltage side cable terminal, the circuit breaker, the high-voltage fuse, etc.; the camera can also be installed on each component to independently monitor the situation of each component in real time. The camera transmits the collected pictures or videos of the transformer room to the image processing device, which can perform image recognition processing on the pictures in real time, and timely obtain whether there is smoke, fire, etc. in the transformer room based on image recognition, timely discover the fire, and give early warning and extinguish the fire. The smoke sensor is installed on the inner wall of the transformer room to monitor whether there is smoke concentration signal generated by smoke in the indoor components, so as to judge the size of the fire in time.

[0049] Exemplarily, the signal of the temperature sensor is the detected temperature value in the transformer room; the signal of the smoke sensor is 0 or 1. When the detected signal of the smoke sensor is 0, it means that no smoke is detected in the transformer room, and when the detected signal of the smoke sensor is 1, it means that a signal is detected in the transformer room; the image signal processed by the image processing device is a fire signal and a no-fire signal. The control system makes a comprehensive judgment on the indoor condition of the transformer according to the different states of the signal of the temperature sensor, the signal of the smoke sensor and the image signal processed by the image processing device, and divides the status of the fire warning event in the box transformer into three levels according to the detected signals, namely: level one fire warning event, level two fire warning event and level three fire warning event.

[0050] In some optional embodiments, when the control system detects the first-level fire warning event, the control system controls to turn on the cooling fan. Exemplarily, when the temperature value detected by the temperature sensor is the first-level temperature, the signal of the smoke sensor is 0, and the image signal processed by the image processing device is no fire, the control system determines that the transformer room is a first-level fire warning event, indicating that there is a possibility of fire. At this time, the possibility of fire can be reduced by cooling the transformer room or the components with higher temperature only by using the cooling fan.

[0051] In some optional embodiments, when the control system detects the second-level fire warning event, the heat exchanger and the air conditioner are controlled to be turned on.

[0052] Exemplarily, when the temperature value detected by the temperature sensor is the second-level temperature, the signal of the smoke sensor is 0, and the image signal processed by the image processing device is no fire, the control system determines that the transformer room is a second-level fire warning event, indicating that there is a high possibility of fire. At this time, it is necessary to turn on the controller and the air conditioner at the same time to quickly cool down the transformer room and reduce the possibility of fire.

[0053] In some optional embodiments, when the control system detects the level 3 fire warning event. Exemplarily, when the temperature value detected by the temperature sensor is level 3 temperature, the signal of the smoke sensor is 1, and the image signal processed by the image processing device is a fire, the control system determines that the transformer room is a level 3 fire warning event, which means that a fire has occurred. The control system controls to cut off the non-fire power supply in the transformer room, starts the fire extinguishing device, and when the control detects the level 3 fire warning event, controls the image processing device to determine the coordinates of the fire point according to the image captured by the camera, and the control system controls the fire extinguishing device to automatically move and rotate to the position closest to the fire point coordinates according to the fire point coordinates to extinguish the target object to avoid further expansion of the fire.

[0054] Therefore, the automatic fire alarm and fire extinguishing system in the box transformer provided by the present application, by setting up a temperature sensor, a smoke sensor and a camera, the control system combines the signal of the temperature sensor, the signal of the smoke sensor and the different states of the signal obtained after processing the image taken by the camera to make a comprehensive judgment on the indoor condition of the transformer, and identifies the different conditions in the transformer room according to the different signals emitted by the three detection devices, and promptly discovers fire hazards. The comprehensive judgment of the three detection signals can reduce the error caused by the inaccuracy of one detection method, make the judgment of the environment inside the box more accurate, prevent huge losses or unnecessary alarms, and accurately provide fire warnings.

[0055] Furthermore, the first-level fire warning event is: the temperature value detected by the temperature sensor at any position in the transformer room reaches 70%-89% of the preset threshold, the smoke sensor signal is 0, and the image processing device recognizes that there is no fire signal. In the above scheme, when the temperature value detected by the temperature sensor reaches 70%-89% of the preset threshold, it means that the temperature in the transformer room is high, and the temperature of a certain component exceeding this temperature value may cause fire or explosion. However, at this time, it is necessary to further determine whether there is smoke and whether there is fire. After comprehensive judgment, it can be known that the current temperature in the transformer room is too high and there is no fire. Therefore, the control system only needs to turn on the cooling fan to cool down the transformer room, and does not need to turn on other fire extinguishing components, avoiding unnecessary waste.

[0056] It should be noted that the preset temperature threshold in the present application may be obtained based on historical empirical values, or may be an average value of the temperature values ​​reached when a fire may have occurred in a transformer room in the past.

[0057] Furthermore, the second-level fire warning event is: the temperature sensor detects that the temperature value at any position in the transformer room reaches 70%-89% of the preset threshold, and the smoke sensor signal is 1, and the image processing device recognizes that there is no fire signal, indicating that the current transformer temperature is high and smoke has begun to appear, which may be a sign of fire. At this time, in order to avoid fire, it is necessary to turn on the heat exchanger and air conditioner, extract the smoke in time, and increase the cooling of the transformer.

[0058] In some optional embodiments, the second-level fire warning event is: the temperature sensor detects that the temperature value at any position in the transformer room reaches 90%-99% of the preset threshold, and the smoke sensor signal is 0, and the image processing device recognizes that there is no fire signal. Although there is no smoke and fire at this time, the temperature is too high and a fire may occur relatively quickly. However, it is necessary to turn on the heat exchanger and air conditioner at the same time to increase the cooling of the transformer so that the temperature value can be quickly reduced to avoid the occurrence of fire.

[0059] In some optional embodiments, the third-level fire warning event is: the temperature sensor detects that the temperature value at any position in the transformer room reaches 90%-99% of the preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is no fire signal. At this time, the temperature in the transformer room is close to the preset temperature threshold, and smoke begins to be generated. Although there is no fire, a small flame may have been generated inside a component, which in turn causes smoke to be generated. Next, the flame may spread to the outside of the component, which may further cause a larger fire or explosion. Therefore, it is necessary to quickly cut off the non-fire power supply and start the fire extinguishing system to avoid the occurrence of fire.

[0060] In some optional embodiments, the third-level fire warning event is: the temperature sensor detects that the temperature value at any position in the transformer room is greater than or equal to a preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is a fire signal. At this time, the temperature in the transformer room is equal to or greater than the preset temperature threshold, and is accompanied by the generation of smoke and fire, indicating that a fire has occurred and needs to be extinguished quickly. The control system controls the cutting off of non-fire power supplies and starts the fire extinguishing system to avoid the occurrence of fire.

[0061] Furthermore, the fire extinguishing device 10 includes a fire extinguisher 11, a pipe 12, a nozzle 13, a nozzle base 14, and a fastening sleeve 15. The nozzle 13 is installed on the pipe 12 through the nozzle base 14 and the fastening sleeve 15. The nozzle 13 moves along the pipe 12 through a linear motion device 30 and rotates through a rotating device 40.

[0062] In the above scheme, the fire extinguishing device 10 also includes a fixed shell 16, which is located at the bottom of the transformer room. The fixed shell 16 can be placed at the bottom of the transformer room, or fixed to the bottom of the transformer room by gluing, welding, etc. The fixed shell 16 is a hollow structure, and the fire extinguisher 11 is placed in the hollow structure of the fixed shell 16. The outer wall of the fire extinguisher 11 is fixedly connected to the inner wall of the fixed shell 16 by hook-shaped bolts 111 and clamps, and the outlet end of the fire extinguisher 11 is connected to the pipeline 12.

[0063] Further, the outlet of the fire extinguisher 11 is connected with a container valve 113, and the container valve 113 can control the fire extinguishing material in the fire extinguisher 11 to enter the pipeline 12. A pressure gauge 112 is installed on the right side of the container valve 113, and the pressure gauge 112 can measure the pressure value of the outlet of the fire extinguisher 11, so as to obtain the pressure value of the outlet of the fire extinguisher 11 in time and control the pressure value of the outlet of the fire extinguisher 11 in time. An electromagnet 114 is installed on the top of the container valve 113, and the opening and closing of the container valve 113 can be controlled by the electromagnet 114, so that the fire extinguishing material in the fire extinguisher 11 can enter the pipeline 12. A flexible joint 115 is installed on the left side of the container valve 113, and the other end of the flexible joint 115 is connected to an elbow 116, and the elbow 116 is connected to the pipeline 12. The pipeline 12 can achieve a detachable connection with the container valve 113 through the flexible joint 115 and the elbow 116, so as to facilitate the replacement and inspection of the fire extinguisher 11.

[0064] One end of the pipe 12 extends into the fixed housing 16 and is connected to the fire extinguisher 11 , and the other end of the pipe 12 is provided with a nozzle 13 .

[0065] Furthermore, the end of the nozzle 13 is rotatably connected to the nozzle base 14, and the nozzle base 14 is installed on the pipeline 12 through the fastening sleeve 15. A linear motion device 30 is installed on the pipeline 12, and the linear motion device 30 is fixedly connected to the nozzle base 14, which can drive the nozzle 13 to move relatively along the pipeline 12, so that the nozzle 13 can extinguish fires at different locations of fire points, and has a wide range of applications.

[0066] Furthermore, the pipe 12 has an opening along its axial direction, and the fastening sleeve 15 is installed in the pipe 12 through the opening. The fastening sleeve 15 is provided with a first channel 151 , one end of the first channel 151 is connected to the opening of the pipe 12 , and the other end is connected to the nozzle 13 .

[0067] Furthermore, the fastening sleeve 15 can slide along the opening of the pipe 12, and a seal 121 is provided between the opening of the pipe 12 and the fastening sleeve 15, and the seal 121 is used to seal the opening of the pipe 12. When the fastening sleeve 15 slides along the opening of the pipe 12, the fire extinguishing material in the pipe 12 can enter the nozzle 13 through the first channel 151 of the fastening sleeve 15, and be sprayed to the fire location through the nozzle 13.

[0068] Furthermore, a rotating device 40 is provided between the nozzle 13 and the nozzle base 14, and the rotating device 40 can drive the nozzle 13 to rotate relative to the nozzle base 14, so that the nozzle 13 can expand the fire extinguishing range during the rotation process, spray evenly, avoid the spread of fire, and extinguish the fire quickly.

[0069] Furthermore, the linear motion device 30 includes a first motor 314 and a pulley transmission device 31 . The first motor 314 can drive the pulley transmission device 31 to rotate. The pulley transmission device 31 is arranged on the surface of the pipeline 12 , and the pulley transmission device 31 is fixedly connected to the nozzle base 14 .

[0070] Exemplarily, the linear motion device 30 includes a first motor 314 and a pulley transmission device 31. The pulley transmission device 31 is partially installed on the surface of the pipe 12, and its lower end is fixedly connected to the nozzle base 14. When the first motor 314 drives the pulley transmission device 31 to work, it drives the nozzle 13 to move linearly along the pipe 12 and move to a preset position.

[0071] In some optional embodiments, the pulley transmission device 31 includes a sliding housing 315 , which is slidably mounted on the surface of the pipe 12 , and the lower end of the sliding housing 315 is fixedly connected to the nozzle base 14 .

[0072] Furthermore, the first motor 314 is fixedly installed in the sliding housing 315, and the number of pulleys 311 is at least two, which are symmetrically arranged on both sides of the pipeline 12. The pulleys 311 are connected to the output shaft of the first motor 314 through the transmission shaft 313, and the track 312 is installed on the pulley 311. The first motor 314 drives the transmission shaft 313 to rotate, and the transmission shaft 313 drives the pulley 311 and the track 312 to rotate on the surface of the pipeline 12, thereby realizing that the linear motion device 30 can move linearly along the surface of the pipeline 12, driving the nozzle base 14 and the nozzle 13 to move linearly on the pipeline 12 in the transformer room.

[0073] Furthermore, the rotating device 40 includes a rotating chassis 41, a second motor 42, a second gear 43, a first gear 44, a third motor 45, and a nozzle cover 131, the output shaft of the second motor 42 is connected to the second gear 43, the second gear 43 is in driving engagement with the first gear 44, the output shaft of the first gear 44 is connected to the rotating chassis 41, and the end of the output shaft of the first gear 44 passes through the nozzle cover 131, the nozzle cover 131 includes two left and right mounting seats, the third motor 45 is installed in the mounting seat, and the third motor 45 is connected to the nozzle 13.

[0074] Furthermore, the rotating chassis 41 is rotatably installed in the installation groove of the nozzle base 14, and the first gear 44 and the second gear 43 are installed on the top of the rotating chassis 41, and the first gear 44 and the second gear 43 are meshed; the output shaft of the second gear 43 is installed with a second motor 42, and the second motor 42 can drive the second gear 43 to rotate, thereby driving the first gear 44 to rotate.

[0075] Further, the first gear 44 has an output shaft, one end of which is connected to the fastening sleeve 15, and the other end is connected to the nozzle 13. The output shaft of the first gear 44 has a second channel 441, one end of which is connected to the first channel 151 of the fastening sleeve 15, and the other end of which is connected to the nozzle 13 through the rotating chassis 41.

[0076] Furthermore, a nozzle cover 131 is disposed outside the nozzle 13 , and the top of the nozzle cover 131 is fixedly mounted to the bottom of the rotating chassis 41 .

[0077] Furthermore, the nozzle cover 131 can be made of transparent material.

[0078] Furthermore, mounting seats are symmetrically arranged on the left and right sides of the nozzle cover 131, and a third motor 45 is installed in each mounting seat. The third motor 45 is rotatably connected to the nozzle 13. The third motor 45 can drive the nozzle 13 to rotate around the axis of the pipe 12, so that the spraying range of the nozzle 13 is further expanded and the fire extinguishing effect is better.

[0079] Furthermore, after the control system identifies the ignition point coordinates according to the image, it controls the nozzle to move linearly along the pipeline to the pipeline closest to the ignition point coordinates, and further controls the rotating device to rotate the nozzle to align with the ignition point coordinates.

[0080] In the above scheme, after the image recognizes the coordinates of the fire point, the control system can control the linear motion device 30 to start according to the coordinates, drive the nozzle 13 to move linearly along the surface of the pipe 12 to a preset position, and then control the rotating device 40 to drive the nozzle 13 to rotate, so that the nozzle 13 is aimed at the fire point to extinguish the fire.

[0081] Furthermore, it also includes an electric shutter 50, which is arranged on the transformer box.

[0082] In some optional embodiments, the electric blinds 50 include a frame 57, which is mounted on a transformer box. The frame 57 is movably mounted with multiple blind blades 56, and the rotating shaft 54 ​​of each blind blade 56 is fixedly connected to a third gear 52, and the lower end rack 53 of the third gear 52 is meshed, and one of the third gears 52 is connected to a fourth motor 51, and the start and stop of the fourth motor 51 is controlled by a control switch 59.

[0083] Furthermore, the electric blind 50 further includes a side cover 58, which is mounted on the surface of the transformer box, and the third gear 52, the rack 53, and the fourth motor 51 are mounted in the side cover 58. At the same time, a travel switch 55 is also installed in the side cover 58 to detect the displacement of the rack 53, thereby obtaining the opening degree of the electric blind 50.

[0084] For example, when a fire is detected in the electrical cabinet 20 in the transformer or smoke is generated and the electric blinds 50 need to be opened, the control switch 59 can control the fourth motor 51 to rotate, thereby driving one of the third gears 52 to rotate. The third gear 52 drives the rack 53 to rotate, and at the same time drives the remaining third gears 52 on the rack 53 to rotate. When the travel switch 55 detects that the rack 53 has rotated into place, the control switch 59 stops.

[0085] When a fire occurs, the electric shutters 50 can be remotely controlled to issue a fire warning, thereby reducing the occurrence of fire and casualties.

[0086] The second aspect of the present application provides a method for automatic fire alarm and fire extinguishing in a box-type transformer, which adopts the automatic fire alarm and fire extinguishing system in the box-type transformer, and comprises the following steps:

[0087] Step S100: Acquire the signal of the temperature sensor in the transformer, the signal of the smoke sensor, and the image signal processed by the image processing device;

[0088] Step S200: classifying the transformer into a first-level fire warning event, a second-level fire warning event, and a third-level fire warning event according to the signal of the temperature sensor, the signal of the smoke sensor, and the image signal processed by the image processing device;

[0089] Step S300: The control system controls corresponding components to perform fire extinguishing warning work according to different levels of warning events.

[0090] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An automatic fire alarm and fire extinguishing system for a box-type transformer, comprising a control system, a temperature sensor, a smoke sensor, a camera, an image processing device, a cooling fan, a heat exchanger, an air conditioner, and a fire extinguishing device, wherein the image processing device is used to process the image captured by the camera, and is characterized in that: The control system divides the status in the box-type transformer into: a first-level fire warning event, a second-level fire warning event and a third-level fire warning event according to the different statuses of the signal of the temperature sensor, the signal of the smoke sensor and the image signal processed by the image processing device. When the control system detects the first-level fire warning event, the cooling fan is controlled to be turned on; When the control system detects the second-level fire warning event, the heat exchanger and the air conditioner are controlled to be turned on; When the control system detects the third-level fire warning event, it controls the cutting off of non-fire power supplies and starting the fire extinguishing device. When the control system detects the third-level fire warning event, it controls the image processing device to determine the coordinates of the fire point according to the image taken by the camera. The control system controls the fire extinguishing device to automatically move and rotate to the position closest to the fire point coordinates for extinguishing the fire according to the fire point coordinates.

2. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 1 is characterized in that: The first-level fire warning event is: the temperature value detected by the temperature sensor reaches 70%-89% of the preset threshold, the smoke sensor signal is 0, and the image processing device recognizes that there is no fire signal.

3. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 1 is characterized in that: The second-level fire warning event is: the temperature value detected by the temperature sensor reaches 70%-89% of the preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is no fire signal; Or the temperature value detected by the temperature sensor reaches 90%-99% of the preset threshold value, the smoke sensor signal is 0, and the image processing device recognizes that there is no fire signal.

4. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 1 is characterized in that: The third-level fire warning event is: the temperature value detected by the temperature sensor reaches 90%-99% of the preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is no fire signal; Or the temperature value detected by the temperature sensor is greater than or equal to a preset threshold, the smoke sensor signal is 1, and the image processing device recognizes that there is a fire signal.

5. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 1 is characterized in that: The fire extinguishing device includes a fire extinguisher, a pipeline, a nozzle, a nozzle base, and a fastening sleeve. The fire extinguisher is connected to the pipeline. The nozzle is installed on the pipeline through the nozzle base and the fastening sleeve. The nozzle moves along the pipeline through a linear motion device and rotates through a rotating device.

6. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 5 is characterized in that: The linear motion device includes a first motor and a pulley transmission device. The first motor can drive the pulley transmission device to rotate. The pulley transmission device is arranged on the surface of the pipeline and is connected to the nozzle base.

7. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 5 is characterized in that: The rotating device includes a rotating chassis, a second motor, a second gear, a first gear, a third motor, and a nozzle cover. The output shaft of the second motor is connected to the second gear, and the second gear is meshed with the first gear. The output shaft of the first gear is connected to the rotating chassis, and the end of the output shaft of the first gear passes through the nozzle cover. The nozzle cover includes two left and right mounting seats, and the third motor is installed in the mounting seat. The third motor is connected to the nozzle.

8. The automatic fire alarm and fire extinguishing system in a box-type transformer according to any one of claims 5 to 7, characterized in that: After the control system identifies the ignition point coordinates according to the image, it controls the nozzle to move linearly along the pipeline to the pipeline closest to the ignition point coordinates, and further controls the rotating device to rotate the nozzle to align with the ignition point coordinates.

9. The automatic fire alarm and fire extinguishing system in a box-type transformer according to claim 1 is characterized in that: It also includes electric shutters, which are arranged on the transformer box.

10. An automatic fire alarm and fire extinguishing method in a box-type transformer, characterized in that: An automatic fire alarm and fire extinguishing system in a box-type transformer is adopted as described in any one of claims 1 to 9.

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