Integrated compensation box-type transformer substation
The mechanical linkage valve enables millisecond-level synchronous response of the explosion venting and fire extinguishing devices in the box-type substation, solving the problem of response lag in the existing technology, ensuring the synchronization of explosion venting and fire extinguishing actions, and optimizing the energy release channel and system maintainability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HONLE ELECTRIC CO LTD
- Filing Date
- 2026-02-27
- Publication Date
- 2026-04-17
AI Technical Summary
Existing explosion venting and fire extinguishing devices in prefabricated substations cannot achieve millisecond-level synchronous response. They are easily affected by electrical signal delays and interference, resulting in delayed response and an inability to effectively suppress the spread of flames and high-temperature gases.
It adopts a single-point triggering, dual-path synchronous execution architecture with a mechanical linkage valve as the core. The mechanical linkage valve senses pressure changes and synchronously drives the explosion relief plate and the fire extinguishing agent release component, achieving millisecond-level zero-delay mechanical conversion and ensuring the time synchronization and power source of explosion relief and fire extinguishing actions.
It achieves millisecond-level sensing and zero-delay mechanical conversion of signals from sudden pressure rises in the compensation chamber, ensuring strict time synchronization of explosion venting and fire extinguishing actions, constructing an efficient directional energy release channel, avoiding lateral spread of flames and high-temperature particles, and enhancing the system's maintainability and status visualization capabilities.
Smart Images
Figure CN121886157A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power equipment technology, and in particular to an integrated substation with compensation box. Background Technology
[0002] In the field of electrical equipment technology, the development of prefabricated substations has played a crucial role in improving the stability and reliability of power supply. With the continuous growth of industrial and residential electricity demand, the performance and safety requirements for prefabricated substations are also increasing. An integrated prefabricated substation with compensation can effectively improve the power factor of the entire electrical system, playing a key role in power transmission and distribution. It is widely used in various factories, residential areas, and other locations, making a significant contribution to ensuring efficient power supply.
[0003] In prefabricated substations using related technologies, various methods are typically employed to address potential faults within the compensation chamber. A common approach is to install simple pressure relief vents. When the pressure inside the compensation chamber rises, the pressure is released through these vents to prevent damage to the enclosure due to excessive pressure. Some substations are equipped with independent fire extinguishing systems that activate manually or automatically upon detection of a fire to extinguish the hazard. Others combine pressure sensors with electrical control systems; when the pressure sensor detects abnormal pressure, an electrical signal controls the opening of the pressure relief panel and the release of extinguishing agent.
[0004] However, simple explosion vents can only provide basic pressure relief and cannot be synchronized with fire extinguishing operations, nor can they effectively suppress the spread of flames and high-temperature gases. Independent fire extinguishing devices often require manual intervention or complex electrical control systems for triggering, resulting in slow response times and difficulty in extinguishing fires instantly upon a malfunction. Methods using pressure sensors and electrical control systems are susceptible to electrical signal delays and interference, leading to a lack of strict synchronization between explosion relief and fire extinguishing actions, and an inability to effectively control malfunctions within milliseconds. Summary of the Invention
[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide an integrated compensated box-type substation.
[0006] An integrated compensated box-type substation includes a box, the box being divided into a compensation chamber, a low-voltage dynamic reactive power compensation device being installed in the compensation chamber, and an explosion relief and fire extinguishing device. Explosion venting and fire extinguishing devices include: The mechanical linkage valve has its valve body fixed in the compensation chamber. The valve body has a sensing chamber, and a trigger slider is slidably set in the sensing chamber and pre-tightened by an elastic element. One end of the trigger slider extends into the compensation chamber to sense pressure changes, and the other end has an inclined surface. The explosion relief assembly includes an explosion relief plate that seals the pressure relief port of the compensation chamber and a flow guide that covers the pressure relief port. The extinguishing agent release assembly includes an extinguishing agent storage tank located at the top of the compensation chamber and a nozzle connected to the compensation chamber; The mechanical linkage valve also includes a first transmission mechanism and a second transmission mechanism; The first transmission mechanism includes a first drive rod, one end of which engages with the inclined surface of the trigger slider, and the other end extends into the flow guide and is connected to the explosion relief plate through a first output linkage mechanism, for pulling the explosion relief plate outward when the trigger slider slides. The second transmission mechanism includes a second drive rod. One end of the second drive rod engages with the inclined surface of the trigger slider, and the other end is connected to the release trigger of the extinguishing agent release assembly through a transmission mechanism, for triggering the release of the extinguishing agent when the trigger slider slides.
[0007] By adopting the above technical solution, a single-point triggering and dual-path synchronous execution architecture with mechanical linkage valve as the core was established, realizing millisecond-level perception and zero-delay mechanical conversion of the signal of sudden pressure rise in the compensation room. This ensures that the two output actions generated by the single valve body (driving explosion relief and driving fire extinguishing release) have strict time synchronization and power homogeneity, eliminating the response lag problem caused by electrical signal delay or step-by-step execution from the system principle.
[0008] Optionally, the explosion relief plate is an umbrella-shaped structure protruding to the outside of the compensation room, and a drive pull ring is provided at the center of its back side; the first output linkage mechanism includes a first output rod hinged to the first drive rod, the first output rod is installed in the flow guide through a rotating shaft, and one end of it is connected to the drive pull ring through a connecting rod.
[0009] By adopting the above technical solution, a single-point triggering, dual-path synchronous execution architecture with a mechanical linkage valve as the core was established. This architecture achieves millisecond-level perception and zero-delay mechanical conversion of the signal for a sudden increase in compensation chamber pressure, ensuring that the two output actions generated by the single valve body have strict time synchronization and power homogeneity. This eliminates the response lag problem caused by electrical signal delay or step-by-step execution from the system principle. At the same time, the opening dynamics of the explosion relief plate were optimized. The umbrella-shaped structure gives the plate surface better pressure resistance and guidance. The drive pull ring at the center of the back side efficiently converts the linear motion of the first drive rod into a lifting force with a tangential component that is perpendicular to the center of the explosion relief plate through the leverage of the first output rod. This can more effectively overcome the initial static friction of the seal and make the groove tear more smoothly from the center to the outer edge.
[0010] Optionally, the vent plate has multiple intersecting pre-made grooves on its protruding surface, dividing the plate into multiple pressure relief plates; the drive pull ring has a preset easy break.
[0011] By adopting the above technical solutions, the explosion relief plate can withstand the specified pressure under normal working conditions. Under the action of fault lifting force and internal pressure, it can undergo low-stress, controllable brittle tearing along the pre-made grooves to achieve precise rupture. The easy-break point on the drive pull ring can break under extreme overload, protecting the subsequent linkage mechanism from damage.
[0012] Optionally, the deflector has a conical deflector cavity that opens toward the explosion relief plate and converges upward, and the outlet of the deflector cavity is connected to a pressure relief pipe that extends upward to the top of the housing.
[0013] By adopting the above technical solution, a single-point triggering, dual-path synchronous execution architecture with a mechanical linkage valve as the core was established. This architecture enables millisecond-level sensing and zero-delay mechanical conversion of the signal of sudden pressure rise in the compensation chamber, ensuring that the two output actions generated by the single valve body have strict time synchronization and power homogeneity. This eliminates the response lag problem caused by electrical signal delay or step-by-step execution from the system principle. An efficient and directional energy release channel was constructed. The conical guide cavity can achieve the lowest resistance to guide the high-speed ejected gas and the maximum kinetic energy recovery. Combined with the pressure relief pipe, it can achieve vertical upward, unobstructed, and backfire-free emission of flames and high-temperature particles, absolutely preventing their lateral diffusion from endangering adjacent equipment or personnel.
[0014] Optionally, the extinguishing agent release assembly also includes a pressure drive chamber disposed on the extinguishing agent storage tank. The pressure drive chamber is connected to the pressure relief pipe through a pressure dividing pipe, and the angle between the connection direction and the airflow direction in the pressure relief pipe is less than 90 degrees. The output end of the pressure drive chamber is linked to the release trigger.
[0015] By adopting the above technical solutions, a single-point triggering, dual-path synchronous execution architecture with a mechanical linkage valve as the core was established. This architecture achieves millisecond-level perception and zero-delay mechanical conversion of the signal for a sudden increase in compensation room pressure, ensuring that the two output actions generated by this single valve body have strict time synchronization and power homogeneity. This eliminates the response lag problem caused by electrical signal delay or step-by-step execution from the system principle. An efficient and directional energy release channel was constructed to achieve vertical, unobstructed, and backfire-free emission of flames and high-temperature particles, absolutely preventing their lateral diffusion from endangering adjacent equipment or personnel. A passive, self-supplied linkage power source was created. Utilizing the ejection effect of high-speed airflow, a portion of the gas is efficiently extracted into the pressure drive chamber, and the gas pressure energy is smoothly and quickly converted into mechanical energy to drive the needle. This allows the "energy generated by pressure relief" to be directly used to "drive fire extinguishing," making the system self-sufficient and highly integrated.
[0016] Optionally, the release trigger includes a rupture disc disposed within the nozzle and a needle slidably disposed within the nozzle; the end of the second transmission mechanism is connected to the needle via a second output rod; the output end of the pressure drive chamber is used to provide the second output rod with the power to puncture the rupture disc.
[0017] By adopting the above technical solutions, a single-point triggering, dual-path synchronous execution architecture with a mechanical linkage valve as the core was established. This architecture achieves millisecond-level perception and zero-delay mechanical conversion of the signal for a sudden increase in compensation room pressure, ensuring strict time synchronization and power homogeneity between the drive for explosion relief and the drive for fire extinguishing release. This eliminates the response lag caused by electrical signal delays or step-by-step execution. An efficient and directional energy release channel was constructed, enabling the vertical, unobstructed, and backfire-free discharge of flames and high-temperature particles, avoiding lateral diffusion that could endanger adjacent equipment or personnel. A passive, self-supplied linkage power source was created, utilizing the ejection effect of high-speed airflow to draw gas into the pressure drive chamber, converting gas pressure energy into mechanical energy to drive the needle, thus enabling the "energy generated by pressure relief" to be directly used for "fire extinguishing." The final reliable triggering of the extinguishing agent release was achieved, ensuring that the rupture disc is tightly sealed under normal conditions and ruptures instantly upon triggering. The needle transmission mechanism generates sufficient impulse and precision to reliably puncture the rupture disc in one go under composite or sequential drive, and the internal structure of the nozzle ensures that the extinguishing agent can be sprayed out instantly across the entire cross-section after the rupture disc ruptures.
[0018] Optionally, the mechanical linkage valve further includes a status observation and reset mechanism; the status observation and reset mechanism includes a reset rod linked to the first drive rod or the second drive rod, the reset rod extending into an observation box located on the outer wall of the compensation chamber, and connected to a sliding indicator block with an indicator scale inside the observation box; the observation box is provided with a reset port for pushing the indicator block from the outside to reset the drive rod.
[0019] By adopting the above technical solution, a single-point triggering, dual-path synchronous execution architecture with a mechanical linkage valve as the core was established. This enables millisecond-level perception and zero-delay mechanical conversion of the signal for compensating for sudden increases in indoor pressure, ensuring strict time synchronization and power homogeneity between the two output actions of driving explosion relief and driving fire extinguishing release. This eliminates the response lag problem caused by electrical signal delay or step-by-step execution. It also increases the maintainability and status visualization function of the system, realizes motion decoupling and bidirectional transmission, solves the status blind spot problem of "whether the safety device has been activated", allows for safe reset from the outside, and improves the user experience and maintenance convenience of the product.
[0020] Optionally, the elastic element is a helical spring, and the trigger pressure threshold of the mechanical linkage valve can be adjusted by replacing the helical spring with one of different stiffness.
[0021] By adopting the above technical solution, the system pressure trigger threshold is made adjustable and adaptable on-site, allowing the same device to be flexibly adapted to the trigger sensitivity requirements of different engineering scenarios by replacing the standard spring, thereby enhancing the product's versatility and market adaptability.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Establish a single-point triggering, dual-path synchronous execution architecture with mechanical linkage valve as the core, realize millisecond-level perception and zero-delay mechanical conversion of the signal of sudden pressure rise in the compensation room, ensure that the driving explosion relief and driving fire extinguishing release have strict time synchronization and power homogeneity, and eliminate the response lag problem caused by electrical signal delay or step-by-step execution. 2. Construct an efficient and directional energy release channel, using a conical guide cavity to achieve the lowest resistance to guide the high-speed ejected gas and the maximum kinetic energy recovery, combined with a pressure relief pipe to achieve vertical, unobstructed, and backfire-free emission of flames and high-temperature particles, avoiding their lateral diffusion that could endanger adjacent equipment or personnel; 3. Enhance system maintainability and status visualization by using a linkage mechanism between the reset rod and the drive rod to achieve motion decoupling and bidirectional transmission, solving the blind spot problem of whether the safety device has been activated, and allowing for safe reset from the outside, thereby improving the user experience and maintenance convenience of the product. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a structural schematic diagram of the present application, mainly illustrating the compensation device; Figure 3 This is a structural schematic diagram of the present application, mainly illustrating the fire extinguishing agent release component; Figure 4 This is a structural schematic diagram of the present application, mainly illustrating the mechanical linkage valve; Figure 5 This is a structural schematic diagram of the present application, mainly showing the mounting bracket; Figure 6 yes Figure 5 A magnified view of part A in the middle; Figure 7 This is a structural schematic diagram of the present application, mainly illustrating the fire extinguishing agent release component; Figure 8 yes Figure 7 A magnified view of part B in the diagram.
[0024] Attached Figure Descriptions: 1. Housing; 2. Partition; 3. Compensation Chamber; 4. Compensation Device; 5. Mechanical Linkage Valve; 501. Valve Body; 502. Trigger Slider; 503. Helical Spring; 504. Umbrella Block; 505. Mounting Pipe; 506. Drive Rod; 507. Reset Rod; 508. Observation Box; 509. Indicator Block; 510. Scale; 6. Explosion Relief Assembly; 601. Explosion Relief Plate; 602. Flow Deflector; 603. Drive... 604. Pull ring; 7. Pressure relief pipe; 8. Extinguishing agent release assembly; 9. Storage tank; 10. Storage bladder; 11. One-way valve; 12. Pressure dividing pipe; 13. Nozzle; 14. Rupture disc; 15. Sensing chamber; 16. Reset port; 17. Mounting bracket; 18. First output rod; 19. Guide chamber; 10. Connecting pipe; 11. Second output rod; 12. Needle; 13. Guide groove; 14. Hinge plate; 15. Connecting shaft. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail below.
[0026] An integrated substation with compensation box, referring to Figure 1 , Figure 2 The system includes a housing 1, which is divided into a high-voltage chamber, a transformer chamber, a low-voltage chamber, and a compensation chamber 3 by partitions 2. The compensation chamber 3 houses a low-voltage dynamic reactive power compensation device 4, used to improve the power factor of the entire electrical system. Simultaneously, the compensation chamber 3 is equipped with an explosion venting and fire extinguishing device, which, in the event of a failure of the low-voltage dynamic reactive power compensation device 4, simultaneously releases pressure and extinguishes the fire, suppressing the spread of flames and high-temperature gases.
[0027] Reference Figure 2 , Figure 3 The explosion venting device includes a mechanical linkage valve 5, an explosion venting component 6, and an extinguishing agent release component 7. The mechanical linkage valve 5 is used to sense pressure changes in the compensation chamber 3 and is triggered when the pressure in the compensation chamber 3 exceeds a set threshold. After being triggered, it synchronously drives the explosion venting component 6 and the extinguishing agent release component 7 to open and act on the compensation device 4 in the compensation chamber 3.
[0028] Reference Figure 3 , Figure 4 The mechanical linkage valve 5 includes a valve body 501, a trigger slider 502 slidably installed in the valve body 501, and a first transmission mechanism and a second transmission mechanism for triggering the explosion relief assembly 6 and the fire extinguishing agent release assembly 7.
[0029] Reference Figure 2 , Figure 3 , Figure 4A fixed flange is integrally formed on one end periphery of the valve body 501, and is fixedly connected to the side wall of the compensation chamber 3 through the fixed flange. After installation, one end face of the valve body 501 faces the compensation device 4. A sensing chamber 8 is provided inside the valve body 501, and the opening of the sensing chamber 8 is opened on the end face of the valve body 501 facing the compensation device 4.
[0030] The trigger slider 502 is inserted and slidably installed inside the sensing cavity 8, with its outer surface abutting against the inner wall of the sensing cavity 8, and a lubricant is applied between them. A helical spring 503 is fixedly connected to one end of the trigger slider 502 inside the sensing cavity 8, allowing for the setting of different trigger thresholds by replacing the helical springs 503 with those of different stiffnesses. An umbrella-shaped block 504 is fixedly connected to the other end of the trigger slider 502 outside the sensing cavity 8, with the arc-shaped surface of the umbrella block 504 protruding arc-shaped away from the compensation device 4.
[0031] Both the first and second transmission mechanisms include a mounting tube 505 communicating with the sensing cavity 8, and the mounting tube 505 is fixedly connected to the outer wall of the housing 1 at the compensation chamber 3 by screws. A drive rod 506 is slidably connected inside the mounting tube 505. The drive rod 506 extends into the sensing cavity 8 through an opening on the side of the valve body 501, and one end of it is set as an inclined surface that cooperates with the trigger slider 502, so that when the trigger slider 502 slides away from the compensation device 4, the drive rod 506 can be pushed away from the valve body 501 by the inclined surface.
[0032] A reset rod 507 is connected to the valve body 501 via a pivot. One end of the reset rod 507 is hinged to the inclined surface of the drive rod 506, and the other end of the reset rod 507 passes through and extends out of the compensation chamber 3. Meanwhile, a light-transmitting observation box 508 is connected to the outer wall of the compensation chamber 3 via screws. The observation box 508 covers the valve body 501 and has a pre-set opening for the installation pipe 505 to pass through.
[0033] The other end of the reset rod 507 extends into the observation box 508, and an indicator block 509 is slidably connected inside the observation box 508. One surface of the indicator block 509 is hinged to the other end of the reset rod 507 via a connector. A scale 510 is provided on the surface of the observation box 508. When the trigger slider 502 slides and drives the drive rod 506 to slide synchronously, the reset rod 507 rotates along the axis of rotation, pushing the indicator block 509 to slide away from the compensation chamber 3 within the observation box 508. The scale 510 facilitates the operator's assessment of the internal condition of the compensation chamber 3. Furthermore, a reset port 9 is provided on the side of the observation box 508 away from the compensation chamber 3. The indicator block 509 can be pressed through the reset port 9, and the sliding of the indicator block 509 causes the reset rod 507 to rotate along the axis of rotation, causing the drive rod 506 to slide back to its initial position.
[0034] Reference Figure 2 , Figure 4 , Figure 5 The explosion relief assembly 6 includes an explosion relief plate 601 and a flow deflector 602. The housing 1 has a pressure relief port at the compensation chamber 3. The flow deflector 602 is fixedly connected to the outer wall of the compensation chamber 3 with screws and covers the pressure relief port. A fixing flange is integrally formed on the periphery of the explosion relief plate 601, which is fixedly connected to the inner wall of the compensation chamber 3 with screws and seals the pressure relief port.
[0035] Reference Figure 5 , Figure 6 The explosion relief plate 601 is umbrella-shaped, with its arc-shaped surface protruding towards the side opposite to the compensation chamber 3. Multiple intersecting pre-made grooves are formed on the arc-shaped surface, with the intersection point of each groove located at the center of the explosion relief plate 601. These grooves divide the arc-shaped surface of the explosion relief plate 601 into multiple pressure relief plates. Furthermore, a drive pull ring 603 is integrally formed at the center of the side of the explosion relief plate 601 facing the flow guide shroud 602, and the drive pull ring 603 has a pre-set easy-break opening.
[0036] Reference Figure 2 , Figure 5 , Figure 6 The mounting tube 505 in the first transmission mechanism is connected to the flow guide 602, and the drive rod 506 in the first transmission mechanism extends into the flow guide 602. A mounting bracket 10 is fixedly connected to the outer wall of the compensation chamber 3 within the flow guide 602, and the mounting bracket 10 is connected to a first output rod 11 via a rotating shaft. One end of the first output rod 11 is hinged to a connecting rod, which is fixedly connected to a drive pull ring 603. The other end of the first output rod 11 is hinged to the drive rod 506, so that after the drive rod 506 slides, the first output rod 11 can be pushed to rotate along the rotating shaft and drive the connecting rod to pull the drive pull ring 603 outward, thereby providing an initial outward expansion force to the explosion relief plate 601.
[0037] The inner wall of the flow guide 602 forms a cone-shaped flow guide cavity 12 that gradually narrows away from the explosion relief plate 601 and the ground. The flow guide 602 is fixedly connected to a pressure relief pipe 604 at the upward opening. The pressure relief pipe 604 extends upward to the top wall of the box 1, thereby guiding the thermal pressure generated in the compensation chamber 3 and discharging it upward.
[0038] Reference Figure 2 , Figure 3 , Figure 7The extinguishing agent release assembly 7 includes a storage tank 701 fixed to the top of the compensation chamber 3 by a fixing bracket. A storage bladder 702 is installed inside the storage tank 701 and filled with extinguishing agent. A one-way valve 703 is fixedly connected to the storage tank 701. The inlet end of the first one-way valve 703 is connected to a pressure relief pipe 604 via a pressure dividing pipe 704, and the angle between the pressure dividing pipe 704 and the pressure relief pipe 604 is less than 90°. A nozzle 705 is fixedly connected to the side of the storage tank 701 facing the compensation chamber 3. The inlet end of the nozzle 705 is connected to the storage bladder 702, and it extends through the top wall of the compensation chamber 3 into the chamber, so that its outlet end is located above the compensation device 4.
[0039] Reference Figure 2 , Figure 7 , Figure 8 A rupture disc 706 is fixedly connected to the inner wall of the nozzle 705, which is used to isolate the extinguishing agent in the storage bladder 702 from the interior of the compensation chamber 3. Additionally, a connecting pipe 12 is fixedly connected to the top of the compensation chamber 3. One end of the connecting pipe 12 is connected to the mounting pipe 505 in the second transmission mechanism, and the other end extends into the nozzle 705. A second output rod 13 is slidably connected inside the connecting pipe 12. One end of the second output rod 13 is hinged to the drive rod 506 in the second transmission mechanism via a hinge piece 16. Furthermore, a guide groove 15 is provided on the mounting pipe 505, and docking shafts 17 are integrally formed on both sides of the hinge piece 16. The docking shafts 17 extend into the guide groove 15, thereby allowing the drive rod 506 to push the second output rod 13 to slide closer to or further away from the rupture disc 706. Meanwhile, a needle 14 is fixedly connected to one end of the second output rod 13 facing the rupture disc 706, so that after the second output rod 13 slides closer to the rupture disc 706, it can puncture the rupture disc 706 to release the fire extinguishing agent in the storage bladder 702.
[0040] The implementation principle of this application embodiment is as follows: When the low-pressure dynamic reactive power compensation device 4 in the compensation chamber 3 malfunctions and generates an electric arc, it will cause the temperature and pressure inside the cabinet to rise sharply within milliseconds. First, the high-pressure gas acts on the trigger slider 502 of the mechanical linkage valve 5, overcoming the preload of the helical spring 503 and pushing the trigger slider 502 to slide.
[0041] Next, the inclined surface of the trigger slider 502 synchronously pushes the first drive rod 506 and the second drive rod 506 to move linearly. On one hand, the first drive rod 506 pulls the drive ring 603 on the back of the explosion relief plate 601 outward through the first output linkage mechanism (first output rod 11, connecting rod). Under the combined action of the pulling force and the internal high-pressure gas, the explosion relief plate 601 is rapidly torn along the pre-made grooves, and multiple pressure relief plates flip outward. The high-temperature and high-pressure gas enters the guide shroud 602 through the opened pressure relief port, is guided by the conical guide cavity 12, and is safely discharged vertically upward through the pressure relief pipe 604.
[0042] On the other hand, the movement of the second drive rod 506, through a transmission mechanism (such as the second output rod 13), stores energy in the needle 14 of the extinguishing agent release assembly 7 or triggers a linkage mechanism. Simultaneously, a portion of the high-pressure gas diverted from the pressure relief pipe 604 flows through the pressure dividing pipe 704 into the pressure drive chamber of the extinguishing agent storage tank 701, pushing its piston or diaphragm and providing additional power for the final action of the needle 14. Under the dual action of mechanical transmission and pneumatic drive, the needle 14 punctures the rupture disc 706 inside the nozzle 705.
[0043] The extinguishing agent (such as ultrafine dry powder) stored in the extinguishing agent storage tank 701 is then sprayed onto the compensation device 4 through the nozzle 705 under the pressure, providing a covering extinguishing effect on the fault point. This achieves millisecond-level synchronization between the rapid opening of the pressure relief channel and the precise release of the extinguishing agent, confining the fault within the compensation chamber 3 and quickly suppressing it. Furthermore, the displacement of the indicator block 509 in the observation box 508 allows for direct observation of whether the system is operating. The indicator block 509 can be manually pressed through the reset port 9, resetting the entire mechanical linkage valve 5 via the reset rod 507, drive rod 506, and other transmission components, facilitating maintenance.
[0044] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.
Claims
1. An integrated compensated prefabricated substation, comprising a prefabricated enclosure (1), wherein the enclosure (1) is divided into a compensation chamber (3), and a low-voltage dynamic reactive power compensation device (4) is installed in the compensation chamber (3), characterized in that, It also includes explosion venting and fire extinguishing devices; The explosion venting and fire extinguishing device includes: The mechanical linkage valve (5) has its valve body (501) fixed in the compensation chamber (3). The valve body (501) is provided with a sensing chamber (8). A trigger slider (502) is slidably disposed in the sensing chamber (8) and pre-tightened by an elastic element. One end of the trigger slider (502) extends into the compensation chamber (3) to sense pressure changes, and the other end is provided with an inclined surface. The explosion relief assembly (6) includes an explosion relief plate (601) that seals the pressure relief port of the compensation chamber (3) and a flow guide (602) that covers the pressure relief port. The extinguishing agent release assembly (7) includes an extinguishing agent storage tank (701) located at the top of the compensation chamber (3) and a nozzle (705) connected to the compensation chamber (3); The mechanical linkage valve (5) also includes a first transmission mechanism and a second transmission mechanism; The first transmission mechanism includes a first drive rod (506), one end of which engages with the inclined surface of the trigger slider (502), and the other end extends into the flow guide (602) and is connected to the explosion relief plate (601) through a first output linkage mechanism, for pulling the explosion relief plate (601) outward when the trigger slider (502) slides; The second transmission mechanism includes a second drive rod (506), one end of which engages with the inclined surface of the trigger slider (502), and the other end is connected to the release trigger of the extinguishing agent release assembly (7) through a transmission mechanism, for triggering the release of the extinguishing agent when the trigger slider (502) slides.
2. The integrated substation with compensation box as described in claim 1, characterized in that, The explosion relief plate (601) is an umbrella-shaped structure protruding outward from the compensation chamber (3), and a drive pull ring (603) is provided at the center of its back side; the first output linkage mechanism includes a first output rod (11) hinged to the first drive rod (506), the first output rod (11) is installed in the flow guide (602) through a rotating shaft, and one end of it is connected to the drive pull ring (603) through a connecting rod.
3. The integrated compensated prefabricated substation according to claim 2, characterized in that, The vent plate (601) has multiple intersecting pre-made grooves on its protruding surface, dividing the plate surface into multiple pressure relief pieces; the drive pull ring (603) has a preset easy break.
4. The integrated substation with compensation box as described in claim 1, characterized in that, The flow deflector (602) has a conical flow deflector cavity (12) that opens toward the explosion relief plate (601) and converges upward, and the outlet of the flow deflector cavity (12) is connected to a pressure relief pipe (604) that extends upward to the top of the housing (1).
5. The integrated substation with compensation box as described in claim 4, characterized in that, The extinguishing agent release assembly (7) further includes a pressure drive chamber disposed on the extinguishing agent storage tank (701). The pressure drive chamber is connected to the pressure relief pipe (604) through a pressure dividing pipe (704), and the angle between the connection direction and the airflow direction in the pressure relief pipe (604) is less than 90 degrees. The output end of the pressure drive chamber is linked with the release trigger.
6. The integrated substation with compensation box as described in claim 5, characterized in that, The release trigger includes a rupture disc (706) disposed in the nozzle (705) and a needle (14) slidably disposed in the nozzle (705); the end of the second transmission mechanism is connected to the needle (14) via a second output rod (13); the output end of the pressure drive chamber is used to provide the second output rod (13) with the power to puncture the rupture disc (706).
7. The integrated compensated prefabricated substation according to claim 1, characterized in that, The mechanical linkage valve (5) also includes a status observation and reset mechanism; The state observation and reset mechanism includes a reset rod (507) that is linked to the first drive rod (506) or the second drive rod (506). The reset rod (507) extends into the observation box (508) located on the outer wall of the compensation chamber (3) and is connected to a sliding indicator block (509) with an indicator scale inside the observation box (508). The observation box (508) is provided with a reset port (9) for pushing the indicator block (509) from the outside to reset the drive rod (506).
8. The integrated substation with compensation box as described in claim 1, characterized in that, The elastic element is a helical spring (503), and the trigger pressure threshold of the mechanical linkage valve (5) can be adjusted by replacing the helical spring (503) with one of different stiffnesses.