Intelligent early warning and fire extinguishing system for cable trench of transformer substation

Abstract

The utility model provides a transformer substation cable trench intelligence early warning fire extinguishing system, include: cabinet, install a plurality of fire extinguishing agent and early warning signal junction box, mechanical temperature sensing magnetic power generation device, install in the side wall of cable trench, and be linked with early warning signal junction box, a plurality of fire detection tube, install in the cable support of cable trench side wall, and arrange in the top of cable, a plurality of fire detection tube correspond with a plurality of fire extinguishing agent link respectively, when the temperature reaches first set temperature in cable trench, mechanical temperature sensing magnetic power generation device sends signal to early warning signal junction box, and early warning signal junction box sends early warning signal, thereby provides the precious early warning, lets the operation and maintenance personnel have time to check, confirm or take the preliminary measure, when continue to heat up reaches the melting point temperature of rising to fire detection tube, and fire detection tube will form the hole, and the fire extinguishing gas of fire extinguishing agent is discharged through the hole of fire detection tube and carries out the fire extinguishing, and the fire extinguishing corresponding speed is very fast, and the safety performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of power system protection technology, specifically to an intelligent early warning and fire extinguishing system for substation cable trenches. Background Technology

[0002] Cable trenches are a crucial component of power systems, and their safety and stability directly impact the normal operation of the power system. However, because cable trenches typically house a large number of cable lines, these lines may ignite due to aging, overload, or short circuits during operation. A fire in a cable trench can cause not only significant economic losses but also pose a serious threat to personnel safety.

[0003] Traditional fire suppression methods for cable trenches mainly rely on manual inspections and manual extinguishing. These methods suffer from slow response times and low efficiency, often failing to effectively control the fire in its early stages. Therefore, developing a cable trench fire suppression system capable of automatically detecting and rapidly responding to fires is of paramount importance. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a substation cable trench intelligent early warning and fire extinguishing system with high safety performance and fast response.

[0005] Therefore, this utility model provides an intelligent early warning and fire extinguishing system for substation cable trenches, including a cabinet, a mechanical temperature-sensing magnetic generator, and multiple fire detection tubes. The cabinet is equipped with multiple fire extinguishing agents and an early warning signal junction box. The mechanical temperature-sensing magnetic generator is installed on the side wall of the cable trench and connected to the early warning signal junction box. The multiple fire detection tubes are installed on the cable supports on the side wall of the cable trench and arranged above the cables. Each of the multiple fire detection tubes is connected to a corresponding fire extinguishing agent. When the temperature rises to a first set temperature, the mechanical temperature-sensing magnetic generator sends a signal to the early warning signal junction box, and the early warning signal junction box issues an early warning signal. When the temperature continues to rise to the melting point temperature of the fire detection tubes, the fire detection tubes activate the fire extinguishing agents to extinguish the fire.

[0006] The first set temperature is 80-110℃.

[0007] The cabinet is equipped with a fire extinguishing signal junction box and an alarm. The fire extinguishing signal junction box is connected to the fire extinguishing agent and controls the alarm to emit an alarm signal when the fire extinguishing agent is activated.

[0008] A pressure gauge is installed above the extinguishing agent, and an observation window corresponding to the pressure gauge is installed on the cabinet.

[0009] It also includes a conduit, one end of which is connected to the cabinet and the other end extends into the cable trench.

[0010] The fire detection tube is connected to the fire extinguishing agent through a connecting pipe, and the connecting pipe and each feedback signal line are located inside the conduit.

[0011] The cable support includes: a support plate, which is fixed vertically to the side wall of the cable trench; and multiple support arms, which are spaced apart along the height direction of the support plate, and each of the support arms extends horizontally, with the cable disposed on the support arm.

[0012] The fire detection tube is arranged in an S-shape on the cable.

[0013] The technical solution of this utility model has the following advantages: 1. The intelligent early warning and fire extinguishing system for substation cable trenches provided by this utility model, when the temperature inside the cable trench reaches the first set temperature, the mechanical temperature sensing magnetic generator sends a signal to the early warning signal junction box, and the early warning signal junction box issues an early warning signal, thereby providing valuable early warning, allowing maintenance personnel time to check, confirm or take preliminary measures; when the temperature continues to rise and reaches the melting point temperature of the fire detection tube, the fire detection tube will form a hole, and the extinguishing gas of the fire extinguishing agent will be discharged through the hole to extinguish the fire. In this way, the fire extinguishing response speed is extremely fast, improving safety performance.

[0014] 2. The intelligent early warning and fire extinguishing system for substation cable trenches provided by this utility model can immediately issue a clear audible and visual alarm signal when the fire extinguishing agent is activated by setting up a fire extinguishing signal junction box and an alarm, which is crucial for on-site maintenance personnel.

[0015] 3. The intelligent early warning and fire extinguishing system for substation cable trenches provided by this utility model allows maintenance personnel to check pressure gauge readings through the observation window and conveniently conduct daily inspections without opening the cabinet door.

[0016] 4. The intelligent early warning and fire extinguishing system for substation cable trenches provided by this utility model provides robust physical protection for the connecting pipes and feedback signal lines through the conduit, and makes the wiring neater, more standardized, and easier to install and maintain.

[0017] 5. The intelligent early warning and fire extinguishing system for substation cable trenches provided by this utility model has an S-shaped arrangement that significantly increases the coverage area of ​​a single fire detection tube within a limited length, allowing the fire detection tube to more evenly sense the heat emitted by the cables below and improving the detection sensitivity of local overheating points. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of the intelligent early warning and fire extinguishing system for substation cable trenches according to this utility model; Figure 2 This is a 3D view of the cabinet.

[0020] Explanation of reference numerals in the attached diagram: 1. Cabinet; 2. Extinguishing agent; 3. Warning signal junction box; 4. Mechanical temperature sensing magnetic generator; 5. Cable trench; 6. Fire detection tube; 7. Cable bracket; 8. Alarm; 9. Pressure gauge; 10. Observation window; 11. Conduit; 12. Feedback signal line; 13. Support plate; 14. Support arm; 15. Extinguishing signal junction box. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Example This embodiment provides an intelligent early warning and fire extinguishing system for substation cable trenches, such as... Figure 1 As shown, it includes a cabinet 1, a mechanical temperature-sensing magnetic power generation device 4, and multiple fire detection tubes 6.

[0026] Cabinet 1, such as Figure 1 and Figure 2 As shown, the device is equipped with multiple extinguishing agents 2, a warning signal junction box 3, a fire extinguishing signal junction box 15, an alarm 8, and a pressure gauge 9. The fire extinguishing signal junction box 15 is connected to the extinguishing agent 2 and controls the alarm 8 to emit an alarm signal when the extinguishing agent 2 is activated. The pressure gauge 9 is installed above the extinguishing agent 2, and the cabinet 1 has an observation window 10 corresponding to the pressure gauge 9. It should be noted that in this embodiment, the extinguishing agent 2 is produced by Zhejiang Yidian Electric Co., Ltd., model YF10GW / S-YD. The extinguishing agent 2 is a pressurized perfluorohexanone extinguishing agent. The extinguishing agent 2 can release extinguishing gas at high temperatures, and the released gas is insulating, non-corrosive, and non-toxic, and will not cause any damage to the equipment. No special cleanup is required on site after extinguishing the fire. After replacing the extinguishing agent 2, it can be put into use directly. Since the extinguishing agent 2 is non-toxic and harmless, it will not cause damage to the environment or harm to the human body. It is currently the industry's first new type of environmentally friendly fire extinguishing technology.

[0027] The mechanical temperature-sensing magnetic power generation device 4 is installed on the side wall of the cable trench 5 and is connected to the warning signal junction box 3 through a feedback signal line. The mechanical temperature-sensing magnetic power generation device is manufactured by Zhejiang Yidian Electric Co., Ltd., and its model is YD-ME101. It should be noted that the mechanical temperature-sensing magnetic power generation device is an existing mature technology, so its specific structure and working principle will not be described in detail.

[0028] Multiple fire detection tubes 6 are installed on the cable brackets 7 on the side wall of the cable trench 5, and arranged above the cables. Each of the multiple fire detection tubes 6 is connected to a corresponding number of fire extinguishing agents 2 via connecting pipes (not shown in the figure). Under normal circumstances, the fire detection tubes 6 are in a closed state. When a fire occurs, the fire detection tubes 6 will form holes due to excessive temperature, allowing the fire extinguishing agent gas to escape through the holes to extinguish the fire. In this embodiment, as... Figure 2As shown, the cable bracket 7 includes: a support plate 13, vertically fixed to the side wall of the cable trench 5; multiple support arms 14, spaced apart along the height of the support plate 13, with each support arm 14 extending horizontally; the cable is mounted on the support arm 14; and the fire detection tube 6 is arranged in an S-shape on the cable. It should be noted that the fire detection tube 6 is also connected to the extinguishing agent 2 or the extinguishing signal junction box 15 via a feedback signal line, thereby feeding back the extinguishing signal to the alarm 8 through the extinguishing signal junction box 15.

[0029] When the temperature rises to the first set temperature (80-110℃), the mechanical temperature-sensing magnetic generator 4 sends a signal to the early warning signal junction box 3, which then issues an early warning signal, providing valuable early warning and giving maintenance personnel time to check, confirm, or take preliminary measures. When the temperature continues to rise to the melting point temperature of the fire detection tube 6 (160-180℃), a hole will form in the fire detection tube 6, and the extinguishing gas of the extinguishing agent 3 will be discharged through the hole in the fire detection tube 6 to extinguish the fire. This results in a very fast fire extinguishing response and improves safety performance.

[0030] A conduit 11 is provided between the cabinet 1 and the cable trench 5, and the connecting pipe and each feedback signal line 12 are all located inside the conduit 11.

[0031] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An intelligent early warning and fire extinguishing system for substation cable trenches, characterized in that, include: The cabinet (1) is equipped with multiple fire extinguishing agents (2) and a warning signal junction box (3); The mechanical temperature-sensing magnetic power generation device (4) is installed on the side wall of the cable trench (5) and connected to the warning signal junction box (3); Multiple fire detection tubes (6) are installed on the cable brackets (7) on the side wall of the cable trench (5) and arranged above the cable. The multiple fire detection tubes (6) are respectively connected to multiple fire extinguishing agents (2). When the temperature rises to the first set temperature, the mechanical temperature-sensing magnetic generator (4) sends a signal to the warning signal junction box (3), and the warning signal junction box (3) issues a warning signal. When the temperature continues to rise to the melting point of the fire detection tube (6), the fire detection tube (6) activates the extinguishing agent (2) to extinguish the fire.

2. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 1, characterized in that, The first set temperature is 80-110℃.

3. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 1 or 2, characterized in that, The cabinet (1) is equipped with a fire extinguishing signal junction box (15) and an alarm (8). The fire extinguishing signal junction box (15) is connected to the fire extinguishing agent (2) and controls the alarm (8) to emit an alarm signal when the fire extinguishing agent (2) is activated.

4. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 1, characterized in that, A pressure gauge (9) is provided above the extinguishing agent (2), and an observation window (10) corresponding to the pressure gauge (9) is provided on the cabinet (1).

5. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 1, characterized in that, It also includes a conduit (11), one end of which is connected to the cabinet (1) and the other end extends into the cable trench (5).

6. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 5, characterized in that, The fire detection tube (6) is connected to the fire extinguishing agent (2) through a connecting pipe. The connecting pipe and each feedback signal line (12) are located inside the conduit (11).

7. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 1, characterized in that, The cable support (7) includes: The support plate (13) is fixed vertically to the side wall of the cable trench (5); Multiple support arms (14) are spaced apart along the height direction of the support plate (13), and each support arm (14) extends in the horizontal direction, with the cable disposed on the support arm (14).

8. The intelligent early warning and fire extinguishing system for substation cable trenches according to claim 1, characterized in that, The fire detection tube (6) is arranged in an S-shape on the cable.

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