Indoor transformer with automatic fire extinguishing system

Abstract

The invention relates to an indoor transformer with an automatic fire extinguishing system, the transformer comprises a bearing frame, a fixing plate, a rotating shaft, a non-stored pressure type buffer fire extinguisher, a connecting pipe, a top frame spraying device and the like, through the design of the non-stored pressure type buffer fire extinguisher, a fire extinguishing agent can be quickly sprayed; in addition, the system is provided with a secondary suction pipe, unused dry powder can be recycled, the resource utilization rate is increased, the operation cost is reduced, the system is further provided with a standby fire extinguisher, when the main fire extinguisher cannot completely extinguish the fire, the standby system is automatically started, and the fire extinguishing efficiency is improved. A non-stored pressure type buffer fire extinguisher is adopted, when a fire occurs, an external power source is not needed, after a gas generator is triggered through a UPS power source, a fire extinguishing agent can be rapidly released, and fire extinguishing dry powder is sprayed to a fire source area through a connecting pipe and a spraying device.

Description

Technical Field

[0001] The invention relates to an indoor transformer with an automatic fire extinguishing system, and in particular to an indoor transformer with an automatic fire extinguishing system applied in the technical field of transformers. Background Art

[0002] In the prior art, transformer fire protection has always been an important issue in the safety of power systems. Traditional fire extinguishing systems mostly rely on power to drive fans or pumping equipment to spray fire extinguishing dry powder into the fire source area. However, such systems are easily affected by power outages when a fire occurs, resulting in unstable fire extinguishing effects. In addition, existing automatic fire extinguishing systems usually require complex mechanical structures, have high maintenance costs, and are inefficient when used in narrow spaces or relatively closed occasions.

[0003] For example, Chinese invention patent CN114191748B discloses a high-altitude transformer with automatic fire warning and fire extinguishing. The system realizes multi-angle fire extinguishing through a mobile mechanism and a folding nozzle mechanism, and is equipped with a dry powder storage tank and a dry powder pump. Although its design realizes automatic warning and fire extinguishing of high-altitude transformers, its power-driven dry powder pump and injection equipment may not be able to continue working when the power is cut off, which is a major limitation in power equipment fires, especially in transformer fires. The power supply is easily destroyed. In addition, the multi-angle mobile mechanism of the system increases the mechanical complexity and has a high maintenance cost. It is suitable for high-altitude occasions, but its fire extinguishing ability in narrow and fixed spaces is relatively limited.

[0004] Chinese invention patent CN112103047B discloses a transformer protection control device that uses a Y-shaped blow pipe to cool down the four sides and transport dry powder through the blow pipe in case of fire. The system can achieve a large coverage area and quickly extinguish the fire with dry powder spray when a fire occurs. However, the device still needs to rely on power to drive the fan and blow pipe for operation, and may not be able to effectively perform fire extinguishing operations in the event of a power outage. In addition, the system design focuses on cooling and heat dissipation, rather than being specifically designed for continuous fire extinguishing of transformer fires. The fire extinguishing efficiency may be insufficient when the fire spreads rapidly.

[0005] The above designs use fans or pumps to spray dry powder or cool down, but there are still certain limitations. For example, they rely on power supply to maintain operation. Once a power outage occurs, the fire extinguishing system will not work properly, which is particularly disadvantageous in transformer fires. In addition, the unconsumed part of the sprayed dry powder cannot be reused. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing transformer fire extinguishing system cannot continuously extinguish fire after power outage and how to recycle unused dry powder and prevent dry powder from being deposited and unable to be effectively sprayed out.

[0007] In order to solve the above problems, the present invention provides an indoor transformer with an automatic fire extinguishing system, including a transformer body, a load-bearing frame fixedly connected to the bottom end of the transformer body, a fixed plate fixedly connected to one end of the load-bearing frame, a rotating shaft rotatably connected to the fixed plate, a clamping ring fixedly connected to one end of the rotating shaft near the center of the load-bearing frame, a non-pressure storage type buffer fire extinguisher fixedly connected to the clamping ring, a connecting pipe fixedly connected to the top of the non-pressure storage type buffer fire extinguisher, a top frame spraying device fixedly connected to the top of the connecting pipe, an explosion-proof shell fixedly connected to the outer end of the load-bearing frame, and the explosion-proof shell connects the transformer body, the load-bearing frame, and the fixed plate. A fixed plate, a rotating shaft, a clamping ring, a non-pressure buffer fire extinguisher, a connecting pipe and an explosion-proof shell are sealed inside the non-pressure buffer fire extinguisher. A bottom cover is fixedly connected to the bottom end of the load-bearing frame. A secondary suction pipe is fixedly connected to one end of the connecting pipe close to the non-pressure buffer fire extinguisher through a three-way pipe. The secondary suction pipe is located at the center of the top of the bottom cover away from the end of the connecting pipe. The bottom cover is a conical structure, and the tip of the conical structure is set downward. A gas generator is fixedly connected to the non-pressure buffer fire extinguisher. The non-pressure buffer fire extinguisher is filled with fire extinguishing dry powder. A controller is fixedly connected to the outer end of the explosion-proof shell, and the gas generator is electrically connected to the controller.

[0008] In the indoor transformer with automatic fire extinguishing system, a non-pressure storage buffer fire extinguisher is used. The fire extinguishing agent can be continuously released by triggering the gas generator through the UPS backup power supply. Compared with the prior art method of spraying dry powder by driving the fan through the power supply, the present invention does not need to rely on an external power supply to maintain the fire extinguishing process. Therefore, it is more suitable for the automatic fire extinguishing scenario of transformer fire. The secondary suction tube can suck the unused dry powder back into the fire extinguishing system to participate in the subsequent fire extinguishing process, thereby realizing the recycling of the fire extinguishing agent.

[0009] As a further improvement of the present application, the end of the secondary suction tube away from the connecting tube is fixedly connected to the load-bearing frame through a bracket. The connecting tube and the secondary suction tube are both high-pressure hoses. The end of the rotating shaft away from the load-bearing frame passes through the explosion-proof shell, and the penetrating part is fixedly connected with a handle.

[0010] As a further improvement of the present application, the non-pressure storage buffer fire extinguisher is composed of a shell, a spray head, a diaphragm and an inhibitor, and the bottom end of the inner part of the shell is fixedly connected to the gas generator.

[0011] As a further improvement of the present application, the top frame spraying device includes a square spray frame composed of multiple stainless steel tubes, and the spray frame is provided with multiple Venturi nozzles and detectors. The number of detectors corresponds one-to-one to the Venturi nozzles. The number of Venturi nozzles corresponds one-to-one to the possible high-temperature points of the transformer body, and the number is not less than seven, and these seven Venturi nozzles correspond one-to-one to the wiring ports at the top of the transformer body.

[0012] As another improvement of the present application, a one-way control valve is provided between the connecting pipe and the spray rack, the length and width of the spray rack can be adjusted as needed, and the spray rack is fixedly connected to the explosion-proof shell through a bracket.

[0013] As another improved supplement of the present application, each Venturi nozzle is provided with a solenoid valve, and each Venturi nozzle is connected to the spray frame through a ball head.

[0014] As another improved supplement to the present application, the controller includes an explosion-proof control box, and the explosion-proof control box integrates a spare non-pressure storage buffer fire extinguisher, a control system, and a UPS backup power supply. The operating panel on the top of the control box is equipped with switches, indicator lights, alarms, emergency start buttons, and 4G / GPS (Beidou) antennas. The control box is designed with an explosion-proof structure in accordance with national standards, all interfaces and panels are effectively sealed, and the internal components are isolated from the external environment, ensuring the safety, corrosion resistance and long-term use of the equipment in an oil and gas environment. The spare non-pressure storage buffer fire extinguisher is fixedly connected to the bottom end of the connecting pipe through a pipeline.

[0015] As another improvement of the present application, the operation panel consists of an AC indicator light, a standby power indicator light, a self-test indicator light, an audible and visual alarm, a 4G / GPS antenna, an emergency manual start button, and an explosion-proof illuminated switch.

[0016] An indoor transformer with an automatic fire extinguishing system, the use method of which comprises the following steps; S1: Regularly inspect the equipment and check whether the equipment is abnormal by observing the self-test indicator light. When the self-test indicator light is on, it indicates that the equipment is abnormal and needs immediate maintenance. S2: If the equipment is operating normally, manually or by turning the handle of the equipment, the non-pressure storage buffer fire extinguisher is driven to rotate through the shaft to shake the dry powder inside the fire extinguisher to prevent the dry powder from being left stationary for a long time, resulting in a decrease in the spraying effect; S3: When the transformer body is overheated, the detector detects the high temperature signal, and the controller automatically opens the corresponding Venturi nozzle, starts the non-pressure storage buffer fire extinguisher, and sprays dry powder to the high temperature area of ​​the transformer through the connecting pipe and the top frame spraying device to extinguish the fire; S4: When the sprayed dry powder is not completely used, part of the dry powder falls to the top of the bottom cover under the action of gravity. Through the low-pressure area generated by the connecting pipe, the secondary suction pipe sucks the dry powder gathered on the top of the bottom cover back to the fire extinguishing system and re-participates in the fire extinguishing process; S5: When a fire occurs in the transformer body and the first fire extinguishing attempt fails, the controller starts the spare non-pressure storage buffer fire extinguisher and continues to spray the fire extinguishing agent to extinguish the fire.

[0017] In summary, this application has the following beneficial effects: First of all, this patent adopts a non-pressure storage buffer fire extinguisher, combined with the structural design of the shell, spray head, diaphragm and inhibitor, which can quickly and effectively spray fire extinguishing agent when a fire occurs. This design not only improves the fire extinguishing speed, but also avoids the problem of internal fire extinguishing agent deposition after long-term use of traditional fire extinguishers, ensuring the long-term reliability and stability of the fire extinguishing system.

[0018] Secondly, the top frame spraying device achieves accurate positioning and targeted fire extinguishing through precise matching of the Venturi nozzle and the detector. The detector can detect the high-temperature points of the transformer body in real time, and automatically start the corresponding Venturi nozzle for fire extinguishing through the controller, which greatly improves the efficiency of fire extinguishing, reduces the waste of fire extinguishing agent, and ensures the high efficiency of the system.

[0019] Thirdly, a secondary suction tube is provided in this patent, which can suck the unused dry powder back into the fire extinguishing system to participate in the subsequent fire extinguishing process, thereby realizing the recycling of the fire extinguishing agent. This design not only saves resources, but also reduces operating costs, making the entire system more environmentally friendly and economical.

[0020] In addition, the system is equipped with a backup non-pressure storage buffer fire extinguisher. When the main fire extinguisher cannot completely extinguish the fire, the backup system can be activated in time to ensure that the fire can be completely controlled, providing double insurance. This design improves the safety and reliability of the system, especially for scenarios where it is unattended for a long time.

[0021] The present invention adopts a non-pressure storage buffer fire extinguisher, which is triggered by a gas generator through a UPS backup power supply. It can continue to spray dry powder to extinguish the fire even in the event of a power outage, solving the technical defect that the traditional fire extinguishing system cannot be maintained after a power outage. This design is not only more suitable for automatic fire extinguishing of transformer fires, especially when the power supply is easily damaged, but also ensures the continuity and stability of the fire extinguishing process.

[0022] The design of the operation panel is simple and clear. Through the power indicator light, self-test indicator light, standby power indicator light and sound and light alarm, the user can easily grasp the working status of the equipment and ensure the safety of the equipment during use. The design of the emergency start button, combined with the protective cover and fuse, effectively prevents misoperation and provides a means of quick start in an emergency, further enhancing the operability and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall structure diagram of this application; Figure 2 The local structure of this application Figure 1 ; Figure 3 The local structure of this application Figure 2 ; Figure 4 The local structure of this application Figure 3 ; Figure 5 The local structure of this application Figure 4 ; Figure 6 A top view of the application; Figure 7 For this application Figure 6 Middle AA section view; Figure 8 For this application Figure 7 Middle BB section view; Fig. 9 For this application Figure 8 Middle CC section view; Fig.10 For this application Figure 8 Enlarged view of point D in the middle; Fig.11 This is the appearance structure diagram of this application.

[0024] Description of the numbers in the figure: 1. Transformer body; 2. Load-bearing frame; 3. Fixed plate; 4. Rotating shaft; 5. Clamp; 6. Non-pressure storage buffer fire extinguisher; 7. Connecting pipe; 8. Top frame spraying device; 9. Explosion-proof shell; 10. Bottom cover; 11. Secondary suction pipe; 12. Gas generator; 13. Controller; 14. Handle; 15. Shell; 16. Spray head; 17. Diaphragm; 18. Inhibitor; 19. Spray rack; 20. Venturi nozzle; 21. Detector. DETAILED DESCRIPTION

[0025] Three embodiments of the present application are described in detail below with reference to the accompanying drawings. Example

[0026] like Figures 1 to 11As shown, this embodiment provides an indoor transformer with an automatic fire extinguishing system, the transformer includes a transformer body 1, the bottom end of the transformer body 1 is fixedly connected to a load-bearing frame 2 by welding, one end of the load-bearing frame 2 is fixedly connected to a fixing plate 3 by bolt connection, a rotating shaft 4 is rotatably connected to the fixing plate 3, one end of the rotating shaft 4 close to the center of the load-bearing frame 2 is fixedly connected to a clamping ring 5 by threaded connection, a non-pressure storage type buffer fire extinguisher 6 is fixed in the clamping ring 5, the non-pressure storage type buffer fire extinguisher 6 is filled with fire extinguishing dry powder, and the top end of the non-pressure storage type buffer fire extinguisher 6 is fixedly connected to a connecting pipe 7 by threaded connection, the other end of the connecting pipe 7 is fixedly connected to a top frame spraying device 8 by welding, the top frame spraying device 8 is connected by a pipeline, and can spray the fire extinguishing dry powder to a designated position when a fire is detected.

[0027] The outer end of the load-bearing frame 2 is fixedly connected with an explosion-proof shell 9, which completely seals the transformer body 1, the load-bearing frame 2, the fixed plate 3, the rotating shaft 4, the clamping ring 5, the non-pressure storage buffer fire extinguisher 6, the connecting pipe 7 and the explosion-proof shell 9 and other components inside by welding and sealing. The design of the explosion-proof shell 9 complies with relevant national standards and can prevent the risks of explosion and corrosion in the external environment during a fire.

[0028] At the bottom end of the load-bearing frame 2, a bottom cover 10 is fixedly connected. The bottom cover 10 is designed to be a conical structure with the tip of the conical structure facing downward, which can effectively gather the unused fire-extinguishing dry powder sprayed from the sprinkler device 8. One end of the connecting pipe 7 close to the non-pressure storage buffer fire extinguisher 6 is fixedly connected to a secondary suction pipe 11 through a three-way pipe. The end of the secondary suction pipe 11 away from the connecting pipe 7 is fixed at the central position of the top of the bottom cover 10. This design allows the fire-extinguishing dry powder collected by the bottom cover 10 to flow back to the non-pressure storage buffer fire extinguisher 6 through the secondary suction pipe 11 for recycling.

[0029] A gas generator 12 is fixedly connected to the inside of the non-pressure storage buffer fire extinguisher 6, and the gas generator 12 is electrically connected to an external controller 13 through a wire so that the fire extinguishing system can be started in time when a fire or high temperature is detected. The connecting pipe 7 and the secondary suction pipe 11 are both high-pressure hoses to ensure that the pipeline system can withstand high pressure and will not leak during the fire extinguishing process. The other end of the rotating shaft 4 passes through the explosion-proof shell 9, and the end of the rotating shaft 4 away from the load-bearing frame 2 is fixedly connected to a handle 14. The operator can use the handle 14 to shake the dry powder inside the non-pressure storage buffer fire extinguisher 6 during daily inspections to prevent the deposition of dry powder caused by long-term standing.

[0030] Working process: During daily use, the operator regularly manually turns the handle 14 to drive the rotating shaft 4 to rotate, and then drives the non-pressure storage buffer fire extinguisher 6 to rotate through the clamp ring 5, so that the dry powder inside the fire extinguisher can be fully shaken to prevent the dry powder from being deposited due to long-term static state, which affects the fire extinguishing effect.

[0031] When high temperature or fire occurs in the transformer body 1, the detector installed on the top frame spraying device 8 detects the fire signal, and the controller 13 immediately controls the gas generator 12 to start. The fire extinguishing dry powder in the non-pressure storage buffer fire extinguisher 6 is transported to the top frame spraying device 8 through the connecting pipe 7 under the action of the gas generator 12, and then is evenly sprayed by the top frame spraying device 8 to the high temperature or fire area of ​​the transformer body 1, thereby effectively extinguishing the fire.

[0032] During the fire extinguishing process, the unused fire extinguishing dry powder will fall into the conical structure at the top of the bottom cover 10 under the action of gravity. During the continuous ejection of gas, the connecting pipe 7 and the secondary suction pipe 11 form a low-pressure area. The secondary suction pipe 11 re-sucks the dry powder in the bottom cover 10 through the low pressure and re-participates in the fire extinguishing.

[0033] If the fire cannot be completely extinguished by the first fire extinguishing, the controller 13 will start the spare non-pressure storage type buffer fire extinguisher 6 to continue the fire extinguishing to ensure that the fire is completely extinguished.

[0034] Through the design of the rotating shaft 4 and the handle 14, the dry powder inside the non-pressure storage buffer fire extinguisher 6 can be easily shaken during daily inspections to avoid dry powder deposition caused by long-term standing, ensuring that the fire extinguishing agent can be sprayed quickly and evenly in an emergency.

[0035] The design of the secondary suction pipe 11 enables unused fire-extinguishing dry powder to participate in fire extinguishing again through the connecting pipe 7, thereby realizing the recycling of dry powder, reducing resource waste and improving fire extinguishing efficiency.

[0036] The explosion-proof housing 9 can effectively prevent external environment explosion and equipment damage under high temperature or fire conditions by completely sealing the transformer body 1 and related components therein, thereby ensuring long-term safe operation of the equipment.

[0037] The built-in gas generator 12 of the non-pressure storage buffer fire extinguisher 6 can respond to fire signals in time, and combined with the top frame spraying device 8 to achieve rapid fire extinguishing, the arrangement of the Venturi nozzle can accurately aim at the high temperature or fire location, improving the efficiency and accuracy of fire extinguishing.

[0038] The setting of the spare non-pressure storage buffer fire extinguisher 6 provides a secondary fire extinguishing guarantee for the equipment. When the first fire extinguishing is unsuccessful, it can ensure the continued fire extinguishing to avoid the spread of fire, thereby improving the reliability and safety of the fire extinguishing system.

[0039] This embodiment provides an efficient and intelligent indoor transformer fire extinguishing system, which can realize automatic fire extinguishing and reuse of fire extinguishing agents through the coordinated work of multiple components, while ensuring the stable operation of the equipment in extreme environments. Example

[0040] like Figures 1 to 11 As shown, based on Example 1, this embodiment provides a more detailed and optimized automatic fire extinguishing system design, which accurately extinguishes the high-temperature points that may occur in the transformer body 1. The fire extinguishing system of this embodiment adopts a non-pressure storage buffer fire extinguisher 6, which is composed of a shell 15, a spray head 16, a diaphragm 17 and an inhibitor 18. The inner bottom end of the shell 15 is fixedly connected to the gas generator 12 to ensure that the fire extinguisher can quickly release the fire extinguishing agent when it is started.

[0041] The top frame spraying device 8 is composed of a square spray frame 19 composed of multiple stainless steel pipes. The spray frame 19 is provided with multiple Venturi nozzles 20 and detectors 21. The number of detectors 21 corresponds to the number of Venturi nozzles 20. In order to ensure that each high-temperature point can be effectively covered, the number of Venturi nozzles 20 is not less than seven, and these seven nozzles correspond to the top wiring ports of the transformer body 1 one by one, respectively, so that accurate fire extinguishing can be performed according to the possible high-temperature points of the transformer body 1.

[0042] In order to ensure the efficient operation of the fire extinguishing system, a one-way control valve is arranged between the connecting pipe 7 and the spray rack 19. The valve controls the one-way flow of the fire extinguishing agent to prevent the backflow from causing adverse effects on the system. The length and width of the spray rack 19 can be adjusted according to actual needs, and it is fixedly connected to the explosion-proof shell 9 through a bracket to ensure the stability of the entire fire extinguishing system.

[0043] Each venturi nozzle 20 is provided with a solenoid valve, which is connected to the spray frame 19 through a ball head. The design of the solenoid valve allows the fire extinguishing system to accurately open or close the nozzle according to the detected high temperature point, ensuring the rational use of the fire extinguishing agent.

[0044] The controller 13 includes an explosion-proof control box, which integrates a spare non-pressure storage buffer fire extinguisher 6, a control system and a UPS backup power supply to ensure that it can continue to work even if the power is cut off in an emergency. An operation panel is provided on the top of the control box. The panel includes an AC indicator light, a backup power indicator light, a self-test indicator light, an audible and visual alarm, a 4G / GPS antenna, an emergency manual start button and an explosion-proof lighted switch. The explosion-proof control box is designed according to national standards. All interfaces and panels are effectively sealed, and the internal components are isolated from the external environment, which can ensure the safety, corrosion resistance and long-term use of the equipment in an oil and gas environment. The spare non-pressure storage buffer fire extinguisher 6 is fixedly connected to the bottom end of the connecting pipe 7 through a pipeline to ensure that the backup system can be immediately activated in an emergency.

[0045] Working process: When high temperature appears in a certain area of ​​the transformer body 1, the detector 21 will immediately detect the high temperature signal and transmit it to the controller 13. The controller 13 controls the corresponding Venturi nozzle 20 to open through the solenoid valve. At this time, the gas generator 12 starts, and the inhibitor 18 in the non-pressure storage buffer fire extinguisher 6 passes through the injection head 16, the connecting pipe 7 and the one-way control valve, and is finally accurately sprayed to the high temperature point through the Venturi nozzle 20 to extinguish the fire.

[0046] The number of the Venturi nozzles 20 is no less than seven, and each nozzle corresponds to a high-temperature point of the transformer body 1. When the detector 21 finds different high-temperature points, the controller 13 can control multiple nozzles 20 to open in sequence or simultaneously, ensuring that the fire extinguishing agent can accurately reach the high-temperature point and quickly extinguish the fire source. At the same time, the design of the one-way control valve ensures that the fire extinguishing agent will not flow back, thereby improving the efficiency and stability of the fire extinguishing system.

[0047] If the first fire extinguishing fails to completely extinguish the fire, the controller 13 will automatically start the spare non-pressure storage buffer fire extinguisher 6 in the explosion-proof control box, and the spare fire extinguisher will continue to transport the fire extinguishing agent to the top frame spraying device 8 through the connecting pipe 7 to ensure that the fire is completely extinguished.

[0048] During the startup of the fire extinguishing system, the indicator lights on the operation panel (such as the AC indicator light, standby power indicator light, and self-test indicator light) can display the current working status of the equipment. When a fire occurs, the sound and light alarm will light up a red light and sound an alarm to remind the operator to respond in time. If the equipment fails to automatically start the fire extinguishing system, authorized personnel can emergency start the fire extinguishing equipment through the manual start button.

[0049] Through the combined design of the shell 15, the injection head 16, the diaphragm 17 and the inhibitor 18, the non-pressure storage buffer fire extinguisher 6 can quickly release the fire extinguishing agent when a fire occurs. The presence of the diaphragm 17 effectively controls the release rate of the fire extinguishing agent to ensure the continuity and stability of the fire extinguishing.

[0050] The number of the Venturi nozzles 20 on the top frame spraying device 8 is not less than seven, and they correspond to the high-temperature points, so that all potential high-temperature points of the transformer body 1 can be effectively covered. The Venturi nozzle 20 cooperates with the detector 21 to make the fire extinguishing process more accurate and reduce the waste of fire extinguishing agent.

[0051] The one-way control valve between the connecting pipe 7 and the spray rack 19 ensures that the fire extinguishing agent will not flow back during the transportation process, thereby improving the safety and service life of the system.

[0052] The explosion-proof control box and UPS backup power supply integrated in the controller 13 ensure that the equipment can work stably even in an emergency. The design of the spare non-pressure storage buffer fire extinguisher 6 increases the reliability of fire extinguishing, avoids the spread of fire, and provides double safety protection.

[0053] The indicator lights, sound and light alarms and emergency start buttons integrated on the operation panel provide users with intuitive equipment status information. The design of the explosion-proof control box complies with national standards and can operate stably for a long time in hazardous environments such as oil and gas, ensuring the safety of equipment and personnel.

[0054] This embodiment improves the intelligence and automation level of the equipment by optimizing the non-pressure storage buffer fire extinguisher 6, the top frame spraying device 8, the Venturi nozzle 20 and the control system, and can extinguish fire quickly and accurately when a fire occurs, and has the advantages of high efficiency, reliability and environmental protection. Example

[0055] like Figures 1 to 11 As shown, based on Example 1 and Example 2, this example describes in detail how to correctly use an indoor transformer with an automatic fire extinguishing system. The method of using this transformer includes regular inspections, manual operation and maintenance, and a fire extinguishing system that automatically starts when a fire occurs, ensuring that the transformer can operate efficiently under normal operation and abnormal conditions, and providing effective fire extinguishing capabilities.

[0056] Regular inspection (S1): Users need to regularly inspect the transformer to check whether the self-test indicator light is normal. When the self-test indicator light is on, it indicates that the equipment is abnormal and needs immediate maintenance. If the self-test indicator light is not on, it indicates that the equipment is operating normally.

[0057] Dry powder shaking (S2): If the equipment operates normally, the operator can manually or through the equipment to rotate the handle 14 to drive the rotating shaft 4, and then drive the non-pressure storage type buffer fire extinguisher 6 to rotate. During the rotation process, the non-pressure storage type buffer fire extinguisher 6 will shake the fire extinguishing dry powder inside to prevent the dry powder from being deposited due to long-term static state, thereby affecting the fire extinguishing effect.

[0058] Fire detection and automatic fire extinguishing (S3): When the transformer body 1 reaches high temperature, multiple detectors 21 installed on the top frame spraying device 8 will detect the fire signal at the same time, and the controller 13 will automatically open the Venturi nozzle 20 corresponding to the high temperature point, and the gas generator 12 will start to push the dry powder in the non-pressure storage buffer fire extinguisher 6 to be sprayed into the high temperature area through the connecting pipe 7 and the top frame spraying device 8 to quickly extinguish the fire.

[0059] Dry powder recovery and reuse (S4): During the fire extinguishing process, some of the dry powder that is not completely used will fall to the top of the bottom cover 10 under the action of gravity. Since the connecting pipe 7 continues to spray dry powder and gas, the end of the secondary suction pipe 11 close to the connecting pipe 7 is in a low-pressure state. This low-pressure state enables the secondary suction pipe 11 to suck in the dry powder collected at the top of the bottom cover 10 and send it back to the fire extinguishing system through the connecting pipe 7 to re-participate in the fire extinguishing process, thereby achieving the effect of recycling the fire extinguishing agent.

[0060] Startup of the backup fire extinguishing system (S5): If the fire in the transformer body 1 is not completely extinguished in the first fire extinguishing, the controller 13 will automatically start the backup non-pressure storage buffer fire extinguisher 6, and the backup fire extinguisher will continue to spray dry powder through the connecting pipe 7 and the top frame spraying device 8 until the fire is completely extinguished.

[0061] The operation panel is equipped with multiple indicator lights and control buttons. Users can use these devices to monitor the operating status of the transformer in real time and take manual operations when necessary. The specific configuration is as follows: Press the power switch (with light) to turn on the device, and the green indicator light on the switch will light up; press it again to turn off the device, and the indicator light will go out.

[0062] AC Indicator When the device is powered by AC power, the AC indicator (green light) lights up, indicating that the device is being powered normally by AC power.

[0063] Backup power indicator When the device switches to the backup power supply, the backup power indicator (yellow light) lights up, indicating that the device is powered by the UPS.

[0064] Self-check indicator When the device detects an abnormal situation, the self-check indicator (yellow light) will light up to remind the user that the device needs maintenance.

[0065] Sound and light alarm When the detector 21 detects a fire signal, the sound and light alarm will light up a red light and the buzzer will sound an alarm to remind the operator to take immediate action.

[0066] When the equipment fails to automatically start the fire extinguishing system, the user can lift the button protective cover (the fuse or nylon rope seal is pulled off) and manually press the emergency start button to force the fire extinguishing system to start.

[0067] Regular inspection and maintenance According to operation step S1, the user needs to conduct regular inspections to ensure that the equipment is in normal condition. If any abnormality is found, the user needs to manually shake the dry powder of the non-pressure storage buffer fire extinguisher 6 through step S2 to ensure that it can be effectively sprayed in an emergency.

[0068] Fire detection and fire extinguishing When a fire occurs, the control system automatically starts according to step S3. The high temperature signal detected by the detector 21 triggers the venturi nozzle 20 to open, and the non-pressure storage buffer fire extinguisher 6 starts to spray the fire extinguishing agent to quickly extinguish the fire source at the high temperature point.

[0069] Fire extinguishing agent recovery and reuse During the fire extinguishing process, the unused dry powder is sucked into the connecting pipe 7 by the secondary suction pipe 11 according to step S4, recovered and sprayed again, thereby realizing the recycling of the fire extinguishing agent and reducing the waste of dry powder.

[0070] Startup of the backup fire extinguishing system When a fire extinguishing fails, the control system will automatically start the backup non-pressure storage buffer fire extinguisher 6 according to step S5 to ensure that the fire is completely extinguished.

[0071] Through the design of regular inspections and manual dry powder shaking, the dry powder inside the non-pressure storage buffer fire extinguisher 6 is ensured to always remain in good condition, avoiding poor spraying problems caused by long-term static conditions, and improving the reliability of the fire extinguishing system.

[0072] The one-to-one correspondence between the detector 21 and the venturi nozzle 20 ensures that the high-temperature points can be quickly covered by the fire extinguishing agent when a fire occurs, thereby reducing the possibility of fire spreading and improving the fire extinguishing efficiency.

[0073] Through the design of the secondary suction tube 11, unused dry powder can be recovered and reused, which reduces the waste of fire extinguishing agent, improves resource utilization, and reduces operating costs.

[0074] The setting of the backup non-pressure storage buffer fire extinguisher 6 provides double insurance for fire extinguishing. When a fire extinguishing fails, the backup fire extinguishing system can continue to work to ensure that the fire is completely extinguished, thereby improving the safety and stability of the system.

[0075] The indicator lights, alarms and emergency start buttons on the operation panel enable users to understand the equipment status in real time and quickly start the equipment through simple operations in an emergency, ensuring the intelligent operation of the equipment and user experience.

[0076] This embodiment further improves the intelligence, efficiency and resource utilization of the transformer fire extinguishing system through detailed usage methods and operating steps, ensuring that reliable fire extinguishing protection can be provided in various usage situations.

[0077] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An indoor transformer with an automatic fire extinguishing system, comprising a transformer body (1), characterized in that: The bottom end of the transformer body (1) is fixedly connected to a load-bearing frame (2), one end of the load-bearing frame (2) is fixedly connected to a fixing plate (3), a rotating shaft (4) is rotatably connected to the fixing plate (3), one end of the rotating shaft (4) close to the center of the load-bearing frame (2) is fixedly connected to a clamping ring (5), a non-pressure-storage buffer fire extinguisher (6) is fixedly connected inside the clamping ring (5), the top end of the non-pressure-storage buffer fire extinguisher (6) is fixedly connected to a connecting pipe (7), the top end of the connecting pipe (7) is fixedly connected to a top frame spraying device (8), the outer end of the load-bearing frame (2) is fixedly connected to an explosion-proof shell (9), and the explosion-proof shell (9) connects the transformer body (1), the load-bearing frame (2), the fixing plate (3), the rotating shaft (4), the clamping ring (5), the non-pressure-storage buffer fire extinguisher (6) and the explosion-proof shell (9). The non-pressure storage buffer fire extinguisher (6), the connecting pipe (7) and the explosion-proof shell (9) are sealed therein; the bottom end of the load-bearing frame (2) is fixedly connected to a bottom cover (10); the end of the connecting pipe (7) close to the non-pressure storage buffer fire extinguisher (6) is fixedly connected to a secondary suction pipe (11) through a three-way pipe; the end of the secondary suction pipe (11) away from the connecting pipe (7) is located at the center of the top of the bottom cover (10); the bottom cover (10) is a conical structure, and the tip of the conical structure is arranged downward; the non-pressure storage buffer fire extinguisher (6) is fixedly connected to a gas generator (12); the non-pressure storage buffer fire extinguisher (6) is filled with fire extinguishing dry powder; the outer end of the explosion-proof shell (9) is fixedly connected to a controller (13); the gas generator (12) is electrically connected to the controller (13).

2. An indoor transformer with an automatic fire extinguishing system according to claim 1, characterized in that: The end of the secondary suction tube (11) away from the connecting tube (7) is fixedly connected to the load-bearing frame (2) via a bracket; the connecting tube (7) and the secondary suction tube (11) are both high-pressure hoses; the end of the rotating shaft (4) away from the load-bearing frame (2) penetrates the explosion-proof shell (9), and the penetrating portion is fixedly connected to a handle (14).

3. The indoor transformer with automatic fire extinguishing system according to claim 1, characterized in that: The non-pressure storage type buffer fire extinguisher (6) is composed of a shell (15), a spray head (16), a diaphragm (17) and an inhibitor (18), and the bottom end of the shell (15) is fixedly connected to the gas generator (12).

4. The indoor transformer with automatic fire extinguishing system according to claim 1, characterized in that: The top frame spraying device (8) comprises a square spray frame (19) composed of a plurality of stainless steel pipes, and a plurality of Venturi nozzles (20) and detectors (21) are arranged on the spray frame (19). The number of the detectors (21) corresponds one-to-one to the number of the Venturi nozzles (20). The number of the Venturi nozzles (20) is not less than seven according to the one-to-one correspondence with possible high-temperature points of the transformer body (1), and the seven Venturi nozzles (20) correspond one-to-one to the wiring ports at the top of the transformer body (1).

5. The indoor transformer with automatic fire extinguishing system according to claim 1, characterized in that: A one-way control valve is provided between the connecting pipe (7) and the spray rack (19); the length and width of the spray rack (19) can be adjusted as required; and the spray rack (19) is fixedly connected to the explosion-proof housing (9) via a bracket.

6. An indoor transformer with an automatic fire extinguishing system according to claim 4, characterized in that: Each of the Venturi nozzles (20) is provided with a solenoid valve, and each of the Venturi nozzles (20) is connected to the spray frame (19) via a ball head.

7. The indoor transformer with automatic fire extinguishing system according to claim 1, characterized in that: The controller (13) includes an explosion-proof control box, and a spare non-pressure storage buffer fire extinguisher (6), a control system, and a UPS backup power supply are integrated inside the explosion-proof control box. An operation panel is provided on the top of the control box, and the operation panel is equipped with a switch, an indicator light, an alarm, an emergency start button, and a 4G / GPS (Beidou) antenna. The control box is designed with an explosion-proof structure in accordance with national standards, and all interfaces and panels are effectively sealed. The internal components are isolated from the external environment, ensuring the safety, corrosion resistance and long-term use of the equipment in an oil and gas environment. The spare non-pressure storage buffer fire extinguisher (6) is fixedly connected to the bottom end of the connecting pipe (7) through a pipeline.

8. An indoor transformer with an automatic fire extinguishing system according to claim 7, characterized in that: The operation panel consists of an AC indicator light, a standby power indicator light, a self-test indicator light, an audible and visual alarm, a 4G / GPS antenna, an emergency manual start button, and an explosion-proof illuminated switch.

9. An indoor transformer with an automatic fire extinguishing system according to any one of claims 1 to 8, characterized in that: How to use it The steps include: S1: Regularly inspect the equipment and check whether the equipment is abnormal by observing the self-test indicator light. When the self-test indicator light is on, it indicates that the equipment is abnormal and needs immediate maintenance. S2: If the device is operating normally, the handle (14) is turned manually or through the device to drive the non-pressure storage buffer fire extinguisher (6) to rotate through the rotating shaft (4), thereby shaking the dry powder inside the fire extinguisher to prevent the dry powder from being left stationary for a long time, which may cause the spraying effect to decrease; S3: When the transformer body (1) reaches a high temperature, the detector (21) detects a high temperature signal, and the controller (13) automatically opens the corresponding Venturi nozzle (20), starts the non-pressure storage buffer fire extinguisher (6), and sprays dry powder to the high temperature area of ​​the transformer through the connecting pipe (7) and the top frame spraying device (8) to extinguish the fire; S4: When the sprayed dry powder is not completely used, part of the dry powder falls to the top of the bottom cover (10) under the action of gravity, and the secondary suction pipe (11) sucks the dry powder gathered on the top of the bottom cover (10) back to the fire extinguishing system through the low-pressure area generated by the connecting pipe (7), and re-participates in the fire extinguishing process; S5: When a fire occurs in the transformer body (1) and the first fire extinguishing attempt fails, the controller (13) starts the standby non-pressure storage buffer fire extinguisher (6) to continue spraying the fire extinguishing agent to extinguish the fire.

Images