Electric fire protection equipment for pipe gallery

Abstract

The utility model relates to the technical field of pipe gallery protection equipment, in particular to pipe gallery electric power fireproof protection equipment which comprises a power cable, a fan and a heat exchange assembly, a lower bin shell is arranged at the bottom of the power cable, an upper bin shell is arranged above the lower bin shell, and a lower sealing edge and an upper sealing edge are arranged on the two sides of the lower bin shell and the two sides of the upper bin shell respectively. A heat exchange assembly is arranged on one side of the lower bin shell and one side of the upper bin shell, and a fan is arranged on one side of the heat exchange assembly. The lower bin shell, the upper bin shell, the lower sealing edge and the upper sealing edge are arranged on the outer side of the power cable to form the closed cavity, the carbon dioxide gas is filled to isolate oxygen, the power cable is prevented from catching fire due to high temperature or other factors, meanwhile, the fan is arranged to drive the carbon dioxide gas to circularly flow in the closed cavity and the heat exchange assembly, and the heat exchange efficiency is improved. The heat generated by the power cable is taken away, the carbon dioxide gas is cooled to guarantee the heat dissipation capability, and the power cable is further prevented from being on fire at high temperature.

Description

Technical Field

[0001] This utility model relates to the technical field of utility tunnel protection equipment, and in particular to utility tunnel electrical fire protection equipment. Background Technology

[0002] A pipe gallery is a corridor for pipelines. In chemical and related plants, many pipelines are concentrated together and laid out along the outside of the equipment or plant. They are usually in the air, supported by brackets, forming a corridor-like shape. It is the main place for centralized laying of pipelines in large equipment. It is composed of steel or reinforced concrete columns, beams and trusses.

[0003] The utility tunnel contains a large number of pipes, which are stacked on top of mounting frames supported by columns and trusses. To improve space utilization, multiple layers are installed vertically. A passageway for personnel to walk through is left in the middle of the utility tunnel.

[0004] In power cable conduits, multiple cable conduits are piled up together, and the space in the conduit is often quite small, which makes it impossible for the heat generated by the cables to dissipate in time. The accumulation of heat not only increases the resistance of the cables, leading to power loss, but the increased resistance also further increases the heat generation, causing the cables to catch fire. In addition, there are often no automatic fire extinguishing devices in the conduit. Utility Model Content

[0005] To overcome the problem that in power cable corridors, multiple cable ducts are piled up together, and the corridor space is often relatively small, which makes it impossible for the heat generated by the cables to dissipate in time. The heat accumulation not only increases the resistance of the cables, leading to power loss, but the increased resistance also further increases the heat generation, causing the cables to catch fire. In addition, there are often no automatic fire extinguishing devices in the corridors.

[0006] The technical solution of this utility model is as follows: a fire protection device for power lines in a utility tunnel, comprising a power cable, a fan, and a heat exchange component. A lower housing is provided at the bottom of the power cable, and an upper housing is provided above the lower housing. Lower and upper housings are provided on both sides of the lower and upper housings. The lower and upper housings, the lower housing, and the upper housing are assembled and fixed with bolts and nuts to form a sealed chamber with the power cable. The sealed chamber is filled with carbon dioxide gas at the same pressure as the outside air. A heat exchange component is provided on one side of the lower and upper housings, and a fan is provided on one side of the heat exchange component to drive the carbon dioxide gas to circulate between the sealed chamber and the heat exchange component.

[0007] Preferably, a mounting groove is provided at the connection between the lower and upper housing shells, and a rubber sealing strip is provided in the mounting groove to enhance the sealing of the connection.

[0008] Preferably, a base is provided at the bottom of the lower compartment, and a placement platform is provided on the top of the lower compartment.

[0009] Preferably, the lower and upper housings are provided with mounting arc-shaped grooves on both sides, and rubber sealing rings for enhancing sealing are provided in the mounting arc-shaped grooves.

[0010] Preferably, the lower edge is provided with a vent, which is connected to a fan or heat exchange component via a pipe.

[0011] Preferably, the heat exchange assembly includes a heat exchange box, a fan, and heat pipes. The heat exchange box is located on one side of the fan, and heat pipes are located inside the heat exchange box. The heat pipes extend from the top of the heat exchange box and fins are located on the outside of the heat pipes.

[0012] Preferably, an installation frame is provided in the gap between the fins, and a fan is provided on the inside of the installation frame. All fans have the same airflow direction, and air guide plates are provided on the inside of the heat exchange box. The air guide plates are arranged in an alternating manner.

[0013] The beneficial effects of this utility model are:

[0014] By setting up a lower enclosure, an upper enclosure, a lower sealing edge, and an upper sealing edge on the outside of the power cable to form a sealed chamber, and filling it with carbon dioxide gas to isolate oxygen, the power cable is prevented from catching fire due to high temperature or other factors. At the same time, a fan is set up to drive the carbon dioxide gas to circulate in the sealed chamber and heat exchange components, carrying away the heat generated by the power cable and cooling the carbon dioxide gas to ensure heat dissipation capacity, further preventing the power cable from catching fire at high temperature. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0016] Figure 2 The diagram shown is a three-dimensional structural diagram of the lower compartment shell of this utility model;

[0017] Figure 3 The diagram shown is a three-dimensional structural diagram of the lower edge sealing of this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the fan of this utility model.

[0019] Figure 5 The diagram shown is a three-dimensional structural schematic of the heat exchange box of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Power cable; 201. Lower casing; 202. Upper casing; 203. Base; 204. Placement platform; 301. Lower edge sealing; 302. Upper edge sealing; 303. Vent; 4. Heat exchange box; 401. Air guide plate; 5. Fan; 601. Rubber sealing strip; 602. Rubber sealing ring; 603. Mounting straight groove; 604. Mounting arc groove; 7. Fan; 701. Mounting frame; 8. Heat pipe; 801. Fin. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-5 This utility model provides an embodiment of a fire protection device for power lines in a utility tunnel, comprising a power cable 1, a fan 5, and a heat exchange assembly. A lower housing 201 is located at the bottom of the power cable 1, and an upper housing 202 is located above the lower housing 201. Lower sealing edges 301 and upper sealing edges 302 are located on both sides of the lower housing 201 and upper housing 202. The lower sealing edges 301, upper sealing edges 302, lower housing 201, and upper housing 202 are assembled and fixed together with bolts and nuts to form a sealed chamber with the power cable 1. The sealed chamber is filled with carbon dioxide gas at the same pressure as the outside air. The lower housing 201 and upper housing 202... A heat exchange component is provided on one side of the 2, and a fan 5 is provided on one side of the heat exchange component to drive carbon dioxide gas to circulate between the sealed chamber and the heat exchange component. By setting a lower chamber 201, an upper chamber 202, a lower sealing edge 301 and an upper sealing edge 302 on the outside of the power cable 1 to form a sealed chamber, and filling it with carbon dioxide gas to isolate oxygen, the power cable 1 is prevented from catching fire due to high temperature or other factors. At the same time, the fan 5 drives the carbon dioxide gas to circulate in the sealed chamber and the heat exchange component to carry away the heat generated by the power cable 1 and cool the carbon dioxide gas to ensure heat dissipation capacity, further preventing the power cable 1 from catching fire at high temperature.

[0023] Please see Figures 2-3In this embodiment, a mounting groove 603 is provided at the connection between the lower housing 201 and the upper housing 202, and between the lower sealing edge 301 and the upper sealing edge 302. A rubber sealing strip 601 for enhancing the connection sealing is provided in the mounting groove 603. A base 203 is provided at the bottom of the lower housing 201, and a placement platform 204 is provided above the lower housing 201. An arc-shaped mounting groove 604 is provided on both sides of the lower housing 201 and the upper housing 202. A rubber sealing ring 602 for enhancing the sealing is provided in the arc-shaped mounting groove 604. The lower sealing edge 301 has a vent 303, which is connected to the fan 5 or heat exchange components via a pipe; the rubber sealing strip 601 is squeezed and deformed under the limit of the mounting straight groove 603 to fill the gap and enhance the sealing performance; the rubber sealing ring 602 is squeezed and deformed under the limit of the mounting arc groove 604 to fill the gap and enhance the sealing performance; the placement platform 204 is used to raise the placement of the power cable 1 to prevent the power cable 1 from contacting the lower housing 201; the base 203 supports the lower housing 201 and prevents the lower housing 201 from rolling.

[0024] Please see Figures 4-5 In this embodiment, the heat exchange assembly includes a heat exchange box 4, a fan 7, and heat pipes 8. The heat exchange box 4 is located on one side of the fan 5. A heat pipe 8 is located inside the heat exchange box 4, extending from the top of the heat exchange box 4. Fins 801 are located on the outside of the heat pipes 8. A mounting frame 701 is installed in the gaps between the fins 801. A fan 7 is located inside the mounting frame 701, with all fans 7 pointing in the same direction. Air guide plates 401 are staggered inside the heat exchange box 4. Carbon dioxide gas enters... After passing through the heat exchange box 4, the gas meanders forward inside the heat exchange box 4 under the guidance of the air guide plate 401, thereby reducing the residence time of the gas in the heat exchange box 4 and reducing the flow rate. The mounting frame 701 installs and fixes the fan 7. Under the blowing action of the fan 7, the temperature of the upper end of the heat pipe 8 is lower than that of the lower end of the heat pipe 8, so that the heat pipe 8 absorbs the heat of the carbon dioxide gas in the heat exchange box 4 and directs the heat to the upper end of the heat pipe 8, thereby cooling the carbon dioxide gas. The fins 801 are used to increase the contact area with the carbon dioxide gas and air to improve the heat exchange efficiency.

[0025] During operation, the fan 5 drives the carbon dioxide gas to circulate in the sealed chamber and heat exchange box 4. After entering the heat exchange box 4, the carbon dioxide gas meanders forward under the guidance of the air guide plate 401, thereby reducing the residence time of the gas in the heat exchange box 4 and reducing the flow rate. The mounting frame 701 installs and fixes the fan 7. Under the blowing action of the fan 7, the temperature of the upper end of the heat pipe 8 is lower than that of the lower end of the heat pipe 8, so that the heat pipe 8 absorbs the heat of the carbon dioxide gas in the heat exchange box 4 and directs the heat to the upper end of the heat pipe 8, thereby cooling the carbon dioxide gas. The fins 801 are used to increase the contact area with the carbon dioxide gas and air to improve the heat exchange efficiency. After cooling, the carbon dioxide gas enters the sealed chamber to dissipate heat and cool the power cable 1, preventing the power cable 1 from catching fire due to high temperature. At the same time, the carbon dioxide concentration in the sealed chamber is very high, and the burning flame cannot obtain an oxidant, thereby quickly extinguishing the fire and preventing it from spreading.

[0026] Through the above steps, a sealed chamber is formed by setting a lower casing 201, an upper casing 202, a lower sealing edge 301, and an upper sealing edge 302 on the outside of the power cable 1, and filling it with carbon dioxide gas to isolate oxygen, so as to prevent the power cable 1 from catching fire due to high temperature or other factors. At the same time, a fan 5 is set up to drive the carbon dioxide gas to circulate in the sealed chamber and heat exchange components, so as to carry away the heat generated by the power cable 1 and cool the carbon dioxide gas to ensure heat dissipation capacity, further preventing the power cable 1 from catching fire at high temperature.

Claims

1. A fire protection device for electrical systems in a utility tunnel, comprising power cables (1); characterized in that: It also includes a fan (5) and a heat exchange assembly. A lower housing (201) is provided at the bottom of the power cable (1), and an upper housing (202) is provided above the lower housing (201). Lower sealing edge (301) and upper sealing edge (302) are provided on both sides of the lower housing (201) and the upper housing (202). The lower sealing edge (301), the upper sealing edge (302), the lower housing (201) and the upper housing (202) are assembled and fixed with bolts and nuts and form a sealed chamber with the power cable (1). The sealed chamber is filled with carbon dioxide gas with the same pressure as the outside air. A heat exchange assembly is provided on one side of the lower housing (201) and the upper housing (202). A fan (5) is provided on one side of the heat exchange assembly to drive the carbon dioxide gas to circulate between the sealed chamber and the heat exchange assembly.

2. The utility tunnel electrical fire protection equipment according to claim 1, characterized in that: A mounting groove (603) is provided at the connection between the lower housing (201) and the upper housing (202) and the lower sealing edge (301) and the upper sealing edge (302). A rubber sealing strip (601) for enhancing the sealing of the connection is provided in the mounting groove (603).

3. The utility tunnel electrical fire protection equipment according to claim 1, characterized in that: A base (203) is provided at the bottom of the lower compartment (201), and a placement platform (204) is provided above the lower compartment (201).

4. The utility tunnel electrical fire protection equipment according to claim 1, characterized in that: The lower housing (201) and the upper housing (202) are provided with mounting arc grooves (604) on both sides, and rubber sealing rings (602) for enhancing sealing are provided in the mounting arc grooves (604).

5. The utility tunnel electrical fire protection equipment according to claim 1, characterized in that: The lower edge sealing (301) is provided with a vent (303), which is connected to the fan (5) or heat exchange component by means of a pipe.

6. The utility tunnel electrical fire protection equipment according to claim 1, characterized in that: The heat exchange assembly includes a heat exchange box (4), a fan (7) and a heat pipe (8). The heat exchange box (4) is located on one side of the fan (5). The heat pipe (8) is located inside the heat exchange box (4). The heat pipe (8) extends out from the top of the heat exchange box (4). Fins (801) are located on the outside of the heat pipe (8).

7. The utility tunnel electrical fire protection equipment according to claim 6, characterized in that: An installation frame (701) is provided in the gap between the fins (801), and a fan (7) is provided on the inner side of the installation frame (701). All fans (7) have the same air direction. An air guide plate (401) is provided on the inner side of the heat exchange box (4), and the air guide plates (401) are arranged alternately.

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