Air supply structure of tunnel fan

Abstract

The utility model belongs to the technical field of tunnel fans, and particularly relates to an air supply structure of a tunnel fan, which comprises a hollow shell mounted at the top of a tunnel and a fan component mounted on the ground of the tunnel, and an air guide component connected with the fan component is arranged outside the hollow shell. A plurality of air guide channels obliquely extending into the hollow shell are formed in the air guide assembly, when airflow enters the hollow shell through the air guide channels, a negative pressure area used for airflow circulation is formed in the hollow shell, and the air guide assembly comprises a first air guide piece and a second air guide piece which are the same in structure. According to the utility model, the fan assembly and the gas guide assembly which are externally arranged are additionally arranged, so that the fan assembly can be prevented from being in direct contact with high-temperature gas in the hollow shell, the service life of equipment is prolonged, and the equipment is prevented from being shut down in the smoke exhaust process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tunnel fan, concretely relates to a kind of air supply structure of tunnel fan. BACKGROUND

[0002] Tunnel fan is mainly composed of shell, air inlet, impeller, motor, air outlet and so on, wherein impeller and motor are integratedly installed in the inside of shell.

[0003] When fire occurs in tunnel, smoke with high temperature is concentrated in the top of tunnel, when tunnel fan starts, gas with high temperature is discharged outward, in this process, high-temperature gas can cause damage to motor and impeller, when motor operates in high-temperature gas for a long time, motor can be damaged, thereby affecting the discharge of high-temperature smoke. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of air supply structure of tunnel fan, to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of air supply structure of tunnel fan, comprising: hollow shell installed in the top of tunnel and fan assembly installed on the ground of tunnel, the outside of hollow shell is equipped with the air guide component connected with fan assembly, and multiple air guide channels are formed on the air guide component and inclined to extend into hollow shell, when airflow enters hollow shell by multiple air guide channels, negative pressure area for airflow circulation is formed in the hollow shell.

[0006] Preferably, the air guide component includes two first air guide pieces and second air guide pieces of same structure, the first air guide piece and second air guide piece both include an air guide ring pipe and multiple air guide branch pipes arranged in annular array on the air guide ring pipe, multiple air guide branch pipes on two air guide ring pipes are both inclined to be installed at two ends of hollow shell facing away, and adjusting mechanism for airflow direction adjustment is arranged between fan assembly and two air guide ring pipes.

[0007] Preferably, the air guide channel is formed between same side air guide ring pipe, multiple air guide branch pipes and hollow shell.

[0008] Preferably, the adjusting mechanism includes air guide pipe communicatedly installed between two air guide ring pipes and three-way valve installed on air guide pipe, and one end of fan assembly is installed at one end of three-way valve facing away from two air guide ring pipes.

[0009] Preferably, the fan assembly includes rack and fan body installed in rack, the bottom of rack is equipped with air inlet communicated with fan body, and the top of rack is equipped with air inlet pipe communicated with three-way valve and fan body. Preferably, the adjusting mechanism includes air guide pipe communicatedly installed between two air guide ring pipes and three-way valve installed on air guide pipe, and one end of fan assembly is installed at one end of three-way valve facing away from two air guide ring pipes.

[0010] Preferably, both ends of the top of the hollow shell are welded with mounting racks for mounting.

[0011] Preferably, the inside of both ends of the hollow shell is provided with dust covers for dust prevention.

[0012] Preferably, the middle of the hollow shell is further provided with an internal threaded joint and an external threaded interface for disassembly and assembly, and the internal threaded joint and the external threaded interface are arranged between the two air guide ring pipes.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model discloses a fan assembly and an air guide assembly are additionally arranged, which can avoid the direct contact of the fan assembly with high-temperature gas in the hollow shell, improve the service life of the equipment and avoid the shutdown of the equipment during the smoke exhaust process.

[0015] (2) The utility model discloses that two first air guide members and second air guide members are additionally arranged, which can make the equipment have bidirectional ventilation under the switching of the adjusting mechanism, so that the equipment can select different ventilation directions according to different on-site conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a front view of the hollow shell, the air guide ring pipe and the air guide branch pipe in the utility model;

[0018] Figure 3 It is a sectional view of the hollow shell, the air guide ring pipe and the air guide branch pipe in the utility model;

[0019] In the drawing: 1, hollow shell; 2, first air guide member; 3, second air guide member; 4, air guide pipe; 5, three-way valve; 6, air inlet pipe; 7, rack; 8, fan body; 9, dust cover; 10, air guide ring pipe; 11, air guide branch pipe; 12, mounting rack; 13, air inlet; 14, internal threaded joint; 15, external threaded interface. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] REFERENCE Figure 1As shown, the utility model provides a kind of air supply structure of tunnel fan, comprising: hollow shell 1 being installed in the top of tunnel and fan assembly being installed on the ground of tunnel, the outside of hollow shell 1 is equipped with the air guide component being connected with fan assembly, and multiple air guide channels are formed in air guide component and extend to hollow shell 1, when airflow enters hollow shell 1 by multiple air guide channels, negative pressure area for airflow circulation is formed in hollow shell 1.

[0022] Above, using the hollow shell 1, fan assembly and air guide component provided by the utility model, hollow shell 1 is tubular structure, when fan assembly starts, gas in tunnel enters tunnel by air guide component, so that negative pressure is formed in hollow shell 1 when gas circulates in hollow shell 1, then gas outside the end of hollow shell 1 is inhaled inward, and is discharged outward by another end, to realize the function of automatic air supply of equipment.

[0023] Further, in order to facilitate the equipment to be installed on the top of tunnel, refer to Figure 1 As shown, mounting rack 12 for installation is welded on both ends of the top of hollow shell 1.The equipment is suspendedly installed on the top of tunnel by mounting rack 12.

[0024] Further, in order to avoid dust accumulation in hollow shell 1, refer to Figures 2-3 As shown, dust cover 9 for dust prevention is arranged in the inside of both ends of hollow shell 1.Dust outside is prevented from entering hollow shell 1 by dust cover 9.

[0025] Further, in order to facilitate the equipment to be assembled, refer to Figure 1 And Figure 3 As shown, inner thread joint 14 and outer thread interface 15 for disassembly and assembly are further arranged in the middle of hollow shell 1, and inner thread joint 14 and outer thread interface 15 are arranged between two air guide ring pipes 10.Two hollow shells 1 are spliced by outer thread interface 15 and inner thread joint 14, so that the equipment can have bidirectional airflow circulation, and after one is removed, the equipment only has unidirectional circulation, meanwhile, the equipment can be split by outer thread interface 15 and inner thread joint 14, to facilitate disassembly and transportation of the equipment.

[0026] In the utility model, in combination with Figure 1 And Figure 3 As shown, the air guide component of the embodiment includes two first air guide pieces 2 and second air guide pieces 3 which are same in structure, the first air guide piece 2 and the second air guide piece 3 each include an air guide ring pipe 10 and multiple air guide branch pipes 11 arranged in annular array on the air guide ring pipe 10, the multiple air guide branch pipes 11 on the two air guide ring pipes 10 are obliquely installed on the two ends of the hollow shell 1 away from each other, and the fan assembly is provided with an adjusting mechanism for airflow direction adjustment between the two air guide ring pipes 10.

[0027] Combination Figure 3 As shown in the figure, the air guide channel is formed between the same side air guide ring pipe 10, the plurality of air guide branch pipes 11 and the hollow shell 1.

[0028] The above, in the use of the air guide assembly provided by the utility model, the gas in the fan assembly is switched between the first air guide piece 2 and the second air guide piece 3 through the adjusting mechanism, so that the airflow is guided into the plurality of air guide branch pipes 11 through the air guide ring pipe 10, and enters the hollow shell 1 through the air guide branch pipe 11, since the air guide branch pipe 11 is in an inclined state, so that the airflow is driven to flow in the hollow shell 1 after entering the hollow shell 1.

[0029] Further, in order to facilitate the adjustment of the wind direction of the fan assembly, referring to Figure 1 As shown in the figure, the adjusting mechanism includes the air guide pipe 4 installed in communication between the two air guide ring pipes 10 and the three-way valve 5 installed on the air guide pipe 4, and one end of the fan assembly is installed on the end of the three-way valve 5 away from the two air guide ring pipes 10. When the three-way valve 5 is started, the airflow is switched from entering the first air guide piece 2 to entering the second air guide piece 3, so that the direction of the airflow flowing in the hollow shell 1 can be adjusted.

[0030] In the utility model, in combination with Figure 1 As shown in the figure, the fan assembly of the embodiment includes the rack 7 and the fan body 8 installed in the rack 7, and the bottom of the rack 7 is provided with the air inlet 13 in communication with the fan body 8, and the top of the rack 7 is provided with the air inlet pipe 6 in communication with the three-way valve 5 and the fan body 8.

[0031] The above, in the use of the fan assembly provided by the utility model, the rack 7 in the fan assembly provides the installation position for the fan body 8, at the same time, since the air inlet 13 is arranged below the rack 7, so that when the fire occurs in the tunnel, the high-temperature flue gas will not enter the fan body 8 through the air inlet 13, the fan body 8 will guide the gas into the air guide pipe 4 through the air inlet pipe 6, and into the hollow shell 1 through the air guide ring pipe 10 and the air guide branch pipe 11, when the airflow flows in the hollow shell 1, it will drive the external space to flow from one end of the hollow shell to the other end.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An air supply structure for a tunnel ventilation fan, characterized in that, include: A hollow shell (1) installed at the top of the tunnel and a fan assembly installed on the ground of the tunnel. The hollow shell (1) is provided with an air guide assembly connected to the fan assembly. The air guide assembly has a plurality of inclined air guide channels extending into the hollow shell (1). When the airflow enters the hollow shell (1) through the plurality of air guide channels, a negative pressure area for airflow is formed in the hollow shell (1).

2. The air supply structure of a tunnel ventilation fan according to claim 1, characterized in that: The air guiding assembly includes two identical first air guiding components (2) and second air guiding components (3). Each of the first air guiding components (2) and the second air guiding component (3) includes an air guiding ring pipe (10) and multiple air guiding branch pipes (11) arranged in a ring array on the air guiding ring pipe (10). The multiple air guiding branch pipes (11) on the two air guiding ring pipes (10) are installed at opposite ends of the hollow shell (1). An adjustment mechanism for adjusting the airflow direction is provided between the fan assembly and the two air guiding ring pipes (10).

3. The air supply structure of a tunnel ventilation fan according to claim 2, characterized in that: The air guiding channel is formed between the air guiding ring pipe (10), the plurality of air guiding branch pipes (11) and the hollow shell (1) on the same side.

4. The air supply structure of a tunnel ventilation fan according to claim 2, characterized in that: The regulating mechanism includes an air guide pipe (4) connected between two air guide ring pipes (10) and a three-way valve (5) installed on the air guide pipe (4). One end of the fan assembly is installed on the end of the three-way valve (5) away from the two air guide ring pipes (10).

5. The air supply structure of a tunnel ventilation fan according to claim 4, characterized in that: The fan assembly includes a frame (7) and a fan body (8) installed in the frame (7). The bottom of the frame (7) is provided with an air inlet (13) communicating with the fan body (8), and the top of the frame (7) is provided with an air inlet pipe (6) communicating with a three-way valve (5) and the fan body (8).

6. The air supply structure of a tunnel ventilation fan according to claim 1, characterized in that: The hollow shell (1) has mounting brackets (12) welded to both ends of its top.

7. The air supply structure of a tunnel ventilation fan according to claim 1, characterized in that: The hollow shell (1) is equipped with dust covers (9) at both ends for dust prevention.

8. The air supply structure of a tunnel ventilation fan according to claim 2, characterized in that: The hollow shell (1) is also provided with an internal threaded joint (14) and an external threaded interface (15) for disassembly and assembly in the middle.

9. The air supply structure of a tunnel ventilation fan according to claim 8, characterized in that: The internal threaded connector (14) and the external threaded interface (15) are located between the two air guide rings (10).

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