A device for preventing over-temperature inside a fire protection cover

Abstract

This utility model relates to the field of fire protection equipment, and more particularly to a device for preventing the internal temperature of a fireproof protective cover from overheating. The device includes a support frame; a fireproof protective cover is installed on the outer side of the support frame; an inspection door is provided on the front surface of the fireproof protective cover; heat dissipation grilles are provided on both sides of the fireproof protective cover; and a drain outlet is installed at the bottom of the fireproof protective cover. The device for preventing the internal temperature of a fireproof protective cover provided by this utility model uses a fusible plug on a precision nozzle. Utilizing the fusible plug's fusible property, it achieves real-time monitoring and trigger control of the internal temperature of the cover, ensuring that a cooling program can be quickly initiated when the temperature exceeds the limit. The response is timely and accurate. Furthermore, the umbrella-shaped gas ejected from the precision nozzle can increase the contact area with the protected equipment, directly reducing the surface temperature of the equipment and quickly displacing and expelling the high-temperature air inside the cover. This dual effect significantly improves cooling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment, and in particular to a device for preventing the internal temperature of a fire protection cover from exceeding the limit. Background Technology

[0002] In numerous industrial settings and environments with high safety requirements, fireproof protective covers are widely used to protect critical equipment from the high temperatures of fires. Especially for equipment such as high-temperature medium valve actuators, fireproof protective covers must not only possess fire-resistant properties but also effectively control internal temperature to ensure the normal operation of the protected equipment. Existing fireproof protective covers, such as those for high-temperature medium valve actuators, while conventionally equipped with ventilation and heat dissipation grilles to meet the daily heat dissipation needs of the actuators and ensure ventilation and heat dissipation both inside and outside the cover, and capable of rapidly expanding to block heat source propagation in the event of a fire, can still experience overheating inside the fireproof protective cover under extreme conditions. These conditions include extremely high ambient temperatures, abnormally high heat generation from the equipment itself, or malfunctioning ventilation and heat dissipation grilles. Once the internal temperature becomes excessively high, it will severely interfere with the normal operation of the protected equipment such as actuators, and may even lead to equipment damage, thereby affecting the safe and stable operation of the entire system.

[0003] Therefore, it is necessary to provide a new device to prevent the internal temperature of the fireproof protective cover from exceeding the limit and solve the above-mentioned technical problems. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a device for preventing the internal temperature of a fireproof protective cover from overheating is provided to solve the above-mentioned problems.

[0005] The device for preventing overheating inside a fireproof protective cover provided by this utility model includes: a support frame; a fireproof protective cover is installed on the outside of the support frame, an inspection door is provided on the front surface of the fireproof protective cover, heat dissipation grilles are provided on both sides of the fireproof protective cover, and a drain outlet is installed at the bottom of the fireproof protective cover; wherein, a cooling component is provided inside the fireproof protective cover, and the cooling component can cool the device inside the fireproof protective cover; the inner and outer surface materials of the fireproof protective cover are silicone-coated glass fiber.

[0006] Preferably, the cooling component includes a precision nozzle installed inside a fireproof protective cover, with an external air pipe installed on the top of the precision nozzle. The end of the external air pipe away from the precision nozzle passes through the fireproof protective cover and is connected to an external air source.

[0007] Preferably, the precision nozzle is equipped with a fusible plug.

[0008] Preferably, the fusible plug melts when the temperature inside the fireproof protective cover reaches 65 degrees Celsius, causing the precision nozzle to eject gas.

[0009] Preferably, the gas ejected from the precision nozzle is sprayed in an umbrella shape onto the surface of the protected equipment.

[0010] Preferably, the external air tube is made of a material that is resistant to high temperature and high pressure and has flexibility.

[0011] Compared with related technologies, the device for preventing overheating inside the fireproof protective cover provided by this utility model has the following beneficial effects: This invention utilizes the fusible plug on a precision nozzle to achieve real-time monitoring and trigger control of the temperature inside the enclosure, ensuring that the cooling program can be quickly initiated when the temperature exceeds the limit. The response is timely and accurate. Furthermore, the umbrella-shaped gas ejected from the precision nozzle can expand the contact area with the protected equipment, which can directly reduce the surface temperature of the equipment and quickly replace and expel the high-temperature air inside the enclosure. This dual effect significantly improves the cooling efficiency. Attached Figure Description

[0012] Figure 1 A schematic diagram of a preferred embodiment of the device for preventing overheating inside a fireproof protective cover provided by this utility model; Figure 2 for Figure 1 The diagram shows the structural schematic of the support frame. Figure 3 for Figure 1 The diagram shows the structure of the cooling component.

[0013] The following are labeled in the diagram: 1. Support frame; 2. Fireproof protective cover; 21. Inspection door; 22. Heat dissipation grille; 23. Drain outlet; 3. Precision nozzle; 31. External gas pipe; 32. Fusible plug. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0016] This utility model provides a device for preventing the internal temperature of a fireproof protective cover from overheating. The device includes: a support frame 1; a fireproof protective cover 2 installed on the outside of the support frame 1; an inspection door 21 provided on the front surface of the fireproof protective cover 2; heat dissipation grilles 22 provided on both sides of the fireproof protective cover 2; and a drain outlet 23 installed at the bottom of the fireproof protective cover 2. A cooling component is provided inside the fireproof protective cover 2, and the cooling component can cool the device inside the fireproof protective cover 2. The inner and outer surface materials of the fireproof protective cover 2 are silicone-coated glass fiber.

[0017] It should be noted that: the support frame 1, as the core load-bearing structure, provides stable support for the entire device. Its six-sided metal frame design effectively resists the continuous impact of fire-fighting water, ensuring the stability of the overall structure in harsh environments. The fireproof protective cover 2 installed on the outside of the support frame 1 has silicone-coated fiberglass on both its inner and outer surfaces, possessing multiple properties such as weather resistance, anti-aging, UV protection, waterproofing, and flame retardancy, providing basic protection for the internal equipment. The inspection door 21 on the front surface of the fireproof protective cover 2 facilitates daily inspections by staff, allowing operation and maintenance of the internal equipment without disassembling the fireproof cover. The heat dissipation grilles 22 on both sides of the fireproof protective cover 2 achieve ventilation and heat dissipation inside and outside the cover at normal temperatures, maintaining a normal temperature balance. In the event of a fire, they rapidly expand to block the spread of heat. The drain outlet 23 at the bottom of the fireproof protective cover 2 can quickly drain accumulated water after fire sprinklers or rain, preventing water accumulation from affecting equipment operation. The cooling components located inside the fireproof protective cover 2 can be activated promptly when the internal temperature exceeds the limit, reducing the internal temperature by spraying gas. Working in conjunction with the above components, they comprehensively ensure the normal operation of the protected equipment.

[0018] In an embodiment of this utility model, the cooling component includes a precision nozzle 3 installed inside a fireproof protective cover 2. An external gas pipe 31 is installed on the top of the precision nozzle 3. The end of the external gas pipe 31 away from the precision nozzle 3 passes through the fireproof protective cover 2 and is connected to an external gas source. A fusible plug 32 is installed on the precision nozzle 3. When the temperature inside the fireproof protective cover 2 reaches 65 degrees, the fusible plug 32 melts, causing the precision nozzle 3 to spray gas. The gas sprayed from the precision nozzle 3 is sprayed in an umbrella shape onto the surface of the protected equipment. The external gas pipe 31 is made of a material that is resistant to high temperature and high pressure and has flexibility.

[0019] It should be noted that: the precision nozzle 3 installed inside the fireproof protective cover 2 is the key actuator for gas injection, which can rapidly spray gas in an umbrella shape onto the surface of the protected equipment, thereby quickly removing heat from the equipment surface and expelling the high-temperature air inside the cover; the external gas pipe 31 installed on the top of the precision nozzle 3 is connected to the precision nozzle 3 at one end and passes through the fireproof protective cover 2 and is connected to an external gas source, responsible for stably delivering gas from the external gas source to the precision nozzle 3, providing a continuous gas source for cooling; the fusible plug 32 installed on the precision nozzle 3 serves as a temperature sensing trigger device. When the temperature inside the fireproof protective cover 2 reaches 65 degrees Celsius, the fusible plug 32 will melt due to heat, thereby opening the gas channel of the precision nozzle 3, allowing the gas to be ejected smoothly to achieve emergency cooling. The three work together to respond quickly when the temperature inside the cover exceeds the limit, ensuring the normal operation of the protected equipment. The gas ejected from the precision nozzle 3 of the cooling component is sprayed in an umbrella shape onto the surface of the protected equipment. This spray pattern can expand the contact area between the gas and the protected equipment, allowing the gas to act on the equipment surface quickly and evenly. This not only helps to efficiently remove heat from the equipment surface, but also promotes the rapid discharge of high-temperature air inside the fireproof protective cover 2, enhancing the cooling effect. The external air pipe 31 is made of a high-temperature resistant, high-pressure resistant, and flexible material. Its high-temperature resistance ensures that it maintains structural stability in the high-temperature environment that may occur inside the fireproof protective cover 2. Its high-pressure resistance ensures the safety of the gas supply from the external air source, avoiding damage to the air pipe due to excessive air pressure. Its flexibility allows the external air pipe 31 to be bent and arranged according to actual installation requirements, enabling it to smoothly connect the external air source and the precision nozzle 3, while also adapting to the spatial layout inside and outside the fireproof protective cover 2.

[0020] The working principle of the device for preventing overheating inside a fireproof protective cover provided by this utility model is as follows: Under normal operating conditions, the support frame 1 provides structural support for the entire device. The fireproof protective cover 2 blocks external heat sources through a silicone-coated glass fiber surface and ceramic fiber filler. The heat dissipation grilles 22 on both sides allow air circulation inside and outside the cover, maintaining the internal temperature within a normal range. The inspection door 21 facilitates regular inspections by staff, and the drain outlet 23 promptly drains accumulated water, ensuring a stable basic operating environment. When the internal temperature of the fireproof protective cover 2 rises to 65 degrees Celsius due to extreme conditions, the fusible plug 32 on the precision nozzle 3 melts upon heating. Gas supplied by an external air source through an external air pipe 31 is sprayed in an umbrella shape onto the surface of the protected equipment through the precision nozzle 3. On one hand, the high-speed flowing gas directly carries away the heat from the equipment surface, reducing its temperature; on the other hand, the gas pushes the high-temperature air inside the cover out through the heat dissipation grilles 22 or other gaps, achieving air replacement inside the cover. After the internal temperature drops to a safe range, the device can be restored to its initial state by replacing the fusible plug 32, ensuring continued overheat protection. The entire process achieves autonomous cooling without relying on electricity through mechanical triggering (melting of the fusible plug). The structure is simple and highly reliable, effectively ensuring the normal operation of the valve actuator under over-temperature conditions.

[0021] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for preventing overheating inside a fireproof protective cover, characterized in that, include: Supporting framework (1); A fireproof protective cover (2) is installed on the outside of the support frame (1). An inspection door (21) is provided on the front surface of the fireproof protective cover (2). Heat dissipation grilles (22) are provided on both sides of the fireproof protective cover (2). A drain outlet (23) is installed at the bottom of the fireproof protective cover (2). A cooling component is provided inside the fireproof protective cover (2), and the device inside the fireproof protective cover (2) can be cooled by the cooling component; The inner and outer surface materials of the fireproof protective cover (2) are silicone-coated glass fiber.

2. The device for preventing overheating inside the fireproof protective cover according to claim 1, characterized in that, The cooling component includes a precision nozzle (3) installed inside a fireproof protective cover (2). An external air pipe (31) is installed on the top of the precision nozzle (3). The end of the external air pipe (31) away from the precision nozzle (3) passes through the fireproof protective cover (2) and is connected to an external air source.

3. The device for preventing overheating inside the fireproof protective cover according to claim 2, characterized in that, The precision nozzle (3) is equipped with a fusible plug (32).

4. The device for preventing overheating inside the fireproof protective cover according to claim 3, characterized in that, The fusible plug (32) melts when the temperature inside the fireproof protective cover (2) reaches 65 degrees, causing the precision nozzle (3) to spray gas.

5. The device for preventing overheating inside the fireproof protective cover according to claim 4, characterized in that, The gas ejected from the precision nozzle (3) is sprayed in an umbrella shape onto the surface of the protected equipment.

6. The device for preventing overheating inside the fireproof protective cover according to claim 5, characterized in that, The external air tube (31) is made of a material that is resistant to high temperature and high pressure and has flexibility.

Images