Electric power tunnel ventilation system

Abstract

The utility model discloses an electric power tunnel ventilation system which comprises a ventilation channel arranged under the ground and located above an electric power tunnel and a ventilation pavilion arranged on the ground and communicated with the external environment, an air inlet of the ventilation channel is communicated with the top of the electric power tunnel, and an air outlet of the ventilation channel is communicated with the bottom of the ventilation pavilion. A packaging supporting assembly is arranged at an air inlet of the ventilation channel, the outer edge of the packaging supporting assembly is tightly attached to and fixedly connected with the inner wall of the ventilation channel, a ventilation hole allowing gas to pass through is formed in the middle of the packaging supporting assembly, an axial flow fan is arranged on the packaging supporting assembly, and the air inlet end of the axial flow fan is communicated with the top of the ventilation hole in an aligned mode. And the exhaust end of the axial flow fan is communicated with the ventilation channel. The electric power tunnel ventilation system is flexible in structural layout, can meet the equipment arrangement requirements under various conditions, and is high in working condition adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of underground tunnel supporting ventilation systems, in particular to a power tunnel ventilation system. Background Art

[0002] In today's urban planning and infrastructure construction, underground tunnels are a widely used type of supporting pipeline facilities, and power tunnels are a particularly widespread application. Specifically, power tunnels are often constructed beneath urban roads. They can be used to lay supporting transmission lines, replacing the existing overhead cable layout, significantly optimizing the layout of urban surface facilities. Furthermore, these power tunnels offer high space utilization, large carrying capacity, and convenient cable routing and maintenance, significantly supporting overall urban planning and layout, as well as power infrastructure construction.

[0003] Generally, when tunnel facilities such as power tunnels are laid out, a ventilation system is arranged in conjunction with them. Conventional ventilation systems usually include an underground working shaft and an air duct installed in the working shaft. The air inlet end of the air duct is connected to the power tunnel, while the air outlet end of the air duct is usually connected to a wind pavilion. The wind pavilion is usually a small pavilion arranged on the surface with ventilation windows, which serves as the exhaust terminal facility of the ventilation system.

[0004] For the above-mentioned conventional power tunnel supporting ventilation system, its wind pavilion, fan and air duct need to be arranged in conjunction with the working shaft, which means that these supporting devices must be arranged near the main structure of the working shaft. However, in the current road construction layout, the road surface is relatively wide, and the working shaft is arranged correspondingly below the road surface. If the supporting arrangement of the wind pavilion is to be guaranteed, the wind pavilion needs to be arranged on the road surface, which will obviously cause interference and safety hazards to road construction and vehicle traffic. If the wind pavilion is to be arranged at a position far away from the road surface, the distance between the wind pavilion and the main structure of the working shaft will be too large, and the arrangement of related supporting facilities such as air ducts is extremely difficult, which is not easy to achieve in actual construction. This not only increases the difficulty of related tunnel supporting construction, but also increases the labor intensity of construction workers.

[0005] In addition, the above-mentioned existing ventilation system working shafts and their supporting wind pavilions have poor layout flexibility and low adaptability to the working environment, which seriously restricts the design and construction of related facilities and has caused many adverse effects on the related urban planning layout and the supporting construction of public facilities such as roads.

[0006] In view of this, how to optimize the structural layout of the ventilation system of the power tunnel to make its structural layout more flexible and more adaptable to working conditions is an important technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0007] The utility model aims to provide a power tunnel ventilation system, which has a flexible structural layout, can adapt to the equipment layout needs under various conditions, and has strong adaptability to working conditions.

[0008] To solve the above technical problems, the present invention provides a power tunnel ventilation system, comprising a ventilation duct arranged underground and above the power tunnel, and a wind pavilion arranged above the ground and connected to the external environment, wherein the air inlet of the ventilation duct is connected to the top of the power tunnel, and the air outlet of the ventilation duct is connected to the bottom of the wind pavilion;

[0009] A packaging support assembly is provided at the air inlet of the ventilation channel, the outer edge of the packaging support assembly is tightly fitted and fixedly connected to the inner wall of the ventilation channel, the middle part of the packaging support assembly has a ventilation hole for gas to pass through, and an axial flow fan is provided on the packaging support assembly, the air inlet end of the axial flow fan is aligned and connected to the top of the ventilation hole, and the exhaust end of the axial flow fan is connected to the ventilation channel.

[0010] Preferably, at least one operating window for airflow and materials to pass through is provided on the side wall of the wind pavilion.

[0011] Preferably, the ventilation channel includes a preparation section extending in a vertical direction and having its top end connected to the bottom of the wind pavilion, and an installation section extending in a vertical direction and having its bottom end connected to the top of the power tunnel, and further includes a bearing section connected between the bottom end of the preparation section and the top end of the installation section, the air inlet is located at the bottom end of the installation section, and the air outlet is located at the top end of the preparation section;

[0012] The bearing section extends in a horizontal direction, and the inner cavity height of the bearing section is not less than 1.5 meters.

[0013] Preferably, the side wall of the preparation section is provided with a plurality of step handles evenly arranged in sequence along the vertical direction.

[0014] Preferably, a mounting ring is fixedly provided on the top inner wall of the bearing section, and the mounting ring is arranged above the mounting section in a vertical direction.

[0015] Preferably, a transfer ring is fixedly provided on the top inner wall of the wind pavilion, and the transfer ring is arranged above the preparation section in a vertical direction.

[0016] Preferably, the packaging support assembly includes an anti-vibration bracket fixedly arranged at the air inlet, and also includes a plurality of sealing plates detachably arranged on the anti-vibration bracket, the outer ends of the sealing plates being snugly matched with the inner walls of the ventilation channel, and the inner ends of the sealing plates circumferentially enclosing to form the ventilation hole;

[0017] The axial flow fan is detachably mounted on the anti-seismic bracket.

[0018] Preferably, a positioning seat is provided on the top of the anti-seismic bracket, the axial flow fan is installed on the positioning seat, and the anti-seismic bracket is detachably provided with a number of limiting angle steels that can be snap-fitted with the top corners and outer edges of the positioning seat.

[0019] Preferably, the limiting angle steel is provided with a shock-absorbing gasket arranged in alignment with the bottom of the positioning seat.

[0020] Preferably, the ventilation channel is made of concrete.

[0021] Compared with the above-mentioned background technology, the power tunnel ventilation system provided by the present invention utilizes ventilation channels as air flow channels for ventilation and air exchange in the power tunnel during its assembly, arrangement and application, and is combined with axial flow fans as air flow guides and drive devices, thereby eliminating the need for additional air ducts and other air flow auxiliary guides and accommodating devices. In addition, the wind pavilion serves as the connection terminal between the entire power tunnel ventilation system and the external atmospheric environment. Only ventilation channels are required between it and the power tunnel to complete the arrangement of the air flow conduction structure. Therefore, the wind pavilion can be arranged at a location required by the working conditions or allowed by environmental planning according to different working environment requirements. The structure of the ventilation channel connecting the wind pavilion and the power tunnel can be flexibly adjusted and arranged according to the corresponding working conditions. There is no need to arrange the wind pavilion close to the core underground facilities of the ventilation system such as the working shaft as is generally done in the prior art. This greatly optimizes the supporting settings and equipment layout structure of the power tunnel ventilation system, significantly improves the adaptation effect of the power tunnel ventilation system to the actual assembly space layout, and effectively improves the working condition adaptability and corresponding equipment layout convenience of the power tunnel ventilation system.

[0022] In another preferred embodiment of the present invention, at least one operating window for airflow and material to pass through is provided on the side wall of the wind pavilion. When the general ventilation system is in operation, the operating window can serve as a terminal facility for connecting the power tunnel ventilation system with the surface atmospheric environment, so as to ensure the connection between the ventilation channel and the gas environment inside the power tunnel and the atmospheric environment outside the surface, and the corresponding ventilation operation effect. When it is necessary to transport a fan or other equipment from the surface to the inside of the ventilation channel, or to transfer the equipment in the ventilation channel to the surface, or when personnel are required to enter and exit the ventilation channel from the surface in order to carry out relevant equipment disassembly, transportation or maintenance operations, the relevant equipment and instruments can be delivered or taken out between the surface and the ventilation channel through the operating window, and the relevant staff can also enter and exit the ventilation channel from the surface smoothly and conveniently through the operating window. In this way, the power tunnel ventilation system does not need to set up additional working entrances and exits such as working pits. The corresponding construction work can be completed by using the working windows arranged on the main structure of the wind pavilion. The working windows are integrated and arranged on the side walls of the wind pavilion, which can make full use of the layout space on the side of the main structure of the wind pavilion, so that the size of the working windows can be designed to be larger, which can fully meet the operational needs of related equipment and personnel entering and exiting the ventilation channel, and can further improve the component structure integration of the power tunnel ventilation system, optimize its equipment structure layout and assembly space utilization, and further improve its adaptability to working conditions and environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A structural perspective view of a power tunnel ventilation system and a power tunnel provided in a specific embodiment of the present invention;

[0025] Figure 2 for Figure 1 A top-down perspective view;

[0026] Figure 3 for Figure 1 A front cross-section of the layout structure of the China Electric Power Tunnel Ventilation System.

[0027] in:

[0028] 11- Ventilation channel; 111- Air inlet; 112- Air outlet; 113- Preparation section; 114- Installation section; 115- Load-bearing section; 116- Step handle; 117- Installation ring;

[0029] 12-wind pavilion; 121-operation window; 122-louver; 123-eaves; 124-transfer ring;

[0030] 13-Packaging support assembly; 131-Ventilation hole; 132-Seismic support; 133-Sealing plate; 134-Anchor plate; 135-Location seat; 136-Limiting angle steel; 137-Shock-absorbing gasket;

[0031] 14-Axial flow fan;

[0032] 20-ground;

[0033] 21-Power Tunnel. DETAILED DESCRIPTION

[0034] The core of the utility model is to provide a power tunnel ventilation system, which has a flexible structural layout, can adapt to the equipment layout needs under various conditions, and has strong adaptability to working conditions.

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0036] It should be noted in advance that, in this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] In addition, in the present invention, unless otherwise clearly stipulated and limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0038] In addition, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] Please refer to Figures 1 to 3 .

[0040] In a specific embodiment, the power tunnel ventilation system provided by the present invention includes a ventilation channel 11 arranged below the ground 20 and above the power tunnel 21, and a wind pavilion 12 arranged on the ground 20 and connected to the external environment. The air inlet 111 of the ventilation channel 11 is connected to the top of the power tunnel 21, and the air outlet 112 of the ventilation channel 11 is connected to the bottom of the wind pavilion 12.

[0041] On this basis, a packaging support component 13 is provided at the air inlet 111 of the ventilation channel 11. The outer edge of the packaging support component 13 is tightly fitted and fixedly connected to the inner wall of the ventilation channel 11. The middle part of the packaging support component 13 has a ventilation hole 131 for gas to pass through. An axial flow fan 14 is provided on the packaging support component 13. The air inlet end of the axial flow fan 14 is aligned and connected to the top of the ventilation hole 131, and the exhaust end of the axial flow fan 14 is connected to the ventilation channel 11.

[0042] During the specific assembly, layout, and application process, the ventilation duct 11 serves as the airflow channel for ventilating the power tunnel 21, and the axial flow fan 14 serves as the airflow guide and drive device. This eliminates the need for additional airflow guides and containment devices, such as air ducts, to complete the entire ventilation duct layout of the power tunnel ventilation system. Furthermore, the wind pavilion 12 serves as the connection terminal between the entire power tunnel ventilation system and the external atmosphere. The airflow conduction structure between the wind pavilion 12 and the power tunnel 21 only requires the ventilation duct 11. This allows the wind pavilion 12 to be positioned where required by the operating conditions or permitted by environmental planning, depending on the specific operating conditions. The ventilation duct 11 connecting the wind pavilion 12 and the power tunnel 21 can be flexibly adjusted and arranged based on the corresponding operating conditions, eliminating the need to place the wind pavilion 12 adjacent to core underground ventilation system facilities such as the working shaft, as is common in the prior art. This significantly optimizes the supporting configuration and equipment layout of the power tunnel ventilation system, significantly improving the adaptability of the power tunnel ventilation system to the actual assembly space layout, and effectively enhancing the power tunnel ventilation system's adaptability to operating conditions and the convenience of corresponding equipment layout.

[0043] It is easy to understand that, under normal circumstances, the airflow is discharged from the inner cavity of the power tunnel 21 through the ventilation channel 11 and the wind pavilion 12 to the surface atmosphere under the action of the axial flow fan 14, completing the basic ventilation operation of the power tunnel 21.

[0044] In actual applications, the ventilation channel 11 is usually a prefabricated concrete part or a concrete structure cast at the construction site to meet the load-bearing requirements of underground equipment and environmental tolerance for long-term burial.

[0045] Specifically, the sidewalls of wind pavilion 12 are provided with at least one operating window 121 for airflow and material to pass through. During normal ventilation system operation, operating window 121 serves as a terminal connecting the power tunnel ventilation system with the surface atmosphere, ensuring that ventilation duct 11 maintains connectivity between the internal gaseous environment of power tunnel 21 and the external surface atmosphere, ensuring effective ventilation.

[0046] When it is necessary to transport a fan or other equipment from the surface to the inside of the ventilation channel 11, or to transfer the equipment in the ventilation channel 11 to the surface, or when personnel need to enter and exit the ventilation channel 11 from the surface in order to carry out relevant equipment disassembly, transportation or maintenance operations, the relevant equipment and instruments can be delivered or taken out between the surface and the ventilation channel 11 through the operation window 121, and the relevant staff can also enter and exit the ventilation channel 11 from the surface smoothly and conveniently through the operation window 121. In this way, the power tunnel ventilation system does not need to set up additional working entrances and exits such as working pits, and can complete the corresponding construction work by using the working window 121 arranged on the main structure of the wind pavilion 12. The working window 121 is integrated and arranged on the side wall of the wind pavilion 12, which can make full use of the layout space on the side of the main structure of the wind pavilion 12, so that the size of the working window 121 can be designed to be larger, which can fully meet the operational needs of related equipment and personnel entering and exiting the ventilation channel 11, and can further improve the component structure integration of the power tunnel ventilation system, optimize its equipment structure layout and assembly space utilization, and further improve its adaptability to the working environment.

[0047] During actual assembly and arrangement, the number of operation windows 121 can be two or even more. Considering that the wind pavilion 12 is usually designed as a building structure with a square cross-section, at least one operation window 121 can be arranged on each of the four side walls of the wind pavilion 12 to further improve the convenience of equipment and personnel entering and exiting the ventilation channel 11 from the ground, and shielding equipment such as insect nets and blinds 122 can be disassembled and arranged on the operation window 121 to prevent external mosquitoes and small animals from entering the ventilation channel 11 and damaging internal equipment such as fans and cables, and to prevent rain and snow from entering the ventilation channel 11 and corroding and damaging related power equipment and facilities, thereby ensuring the long-term and stable operation of the power tunnel ventilation system and the equipment and cables inside the power tunnel 21.

[0048] In addition, the lower edge of the operating window 121 should be at least 500 mm above the ground 20 to prevent surface water from flowing back into the ventilation channel 11 through the operating window 121, thereby preventing the accumulated water from damaging related electrical equipment and cables.

[0049] Of course, the wind pavilion 12 can also be a building structure with a circular or other shaped cross-section, and the operating window 121 can also be arranged at different positions on the side wall of the wind pavilion 12. In principle, as long as it can match the specific working conditions and meet the actual installation and layout requirements of the power tunnel ventilation system, it can be used.

[0050] In addition, eaves 123 structures or boss structures can be protruded horizontally at each edge of the top of the wind pavilion 12 to further block wind and rain, prevent rain, snow and wind and sand from invading the internal environment of the ventilation channel 11, and further prevent the internal equipment and cables of the ventilation channel 11 from being damaged by erosion by rain, snow and wind and sand.

[0051] More specifically, the ventilation duct 11 includes a preparation section 113 extending vertically, its top end connected to the bottom of the wind pavilion 12, and an installation section 114 extending vertically, its bottom end connected to the top of the power tunnel 21. It also includes a support section 115 connecting the bottom end of the preparation section 113 and the top end of the installation section 114. The air inlet 111 is located at the bottom end of the installation section 114, and the air outlet 112 is located at the top end of the preparation section 113. In actual use, the length and orientation of the support section 115 can be flexibly adjusted according to the relative position of the wind pavilion 12 and the power tunnel 21 to match the layout of the installation section 114 and the preparation section 113, ensuring smooth ventilation of the ventilation duct 11 and reliable installation and arrangement of related equipment.

[0052] Generally speaking, when equipment needs to be repaired, maintained, or transported, the relevant equipment will be temporarily placed in the load-bearing section 115, and the relevant staff will also stay in the load-bearing section 115 and perform most of the related operations. Therefore, in specific applications, the load-bearing section 115 should be arranged to extend generally in the horizontal direction. In order to ensure the quality of work and the personal safety of the staff, and to prevent the equipment from slipping, rolling, or even being damaged, the load-bearing section 115 should preferably be arranged to extend in the horizontal direction. In addition, the inner cavity height of the load-bearing section 115 should be no less than 1.5 meters to accommodate the storage, transportation, and arrangement of equipment and materials such as axial fans 14 and cables in the ventilation duct 11, and to ensure that the relevant staff has a relatively ample space for movement in the ventilation duct 11, thereby improving the convenience and efficiency of the disassembly, storage, transportation, and repair and maintenance of the relevant equipment.

[0053] Accordingly, the load-bearing section 115 can be a conventional duct structure with a circular or elliptical cross-section, or an irregular duct structure with a horizontal bottom inner wall. In practical applications, the structural form and dimensional parameters such as the inner cavity height of the load-bearing section 115 can be flexibly selected and adjusted based on specific operating requirements and environmental conditions. In principle, any design that meets the specific layout and application requirements of the power tunnel ventilation system is acceptable.

[0054] Furthermore, the sidewalls of the preparation section 113 are provided with a plurality of step handles 116 evenly spaced in the vertical direction. When entering the ventilation duct 11 from the ground, or exiting the ventilation duct 11 to reach the ground, the worker can cling to each step handle with his or her hands and feet to gradually and smoothly descend from the working window 121 to the bottom inner wall of the ventilation duct 11 and stand steadily, or gradually and smoothly ascend from the ventilation duct 11 to the working window 121 and drill out of the wind pavilion 12 through the working window 121 to reach the ground.

[0055] Considering that the ventilation duct 11 is usually a prefabricated concrete part or a concrete structure cast on site, the step handle 116 is usually a square or circular frame structure formed by bending steel bars. According to the actual working conditions and construction methods, each step handle 116 can be pre-buried in the concrete structure of the ventilation duct 11, or the step handle 116 can be securely installed on the side wall of the preparation section 113 on site through bolts or other connecting parts to ensure the connection strength and the personal safety of workers when climbing during subsequent operations.

[0056] In addition, a mounting ring 117 is fixedly provided on the inner wall of the top of the supporting section 115. The mounting ring 117 is arranged vertically above the mounting section 114. When the axial fan 14 or other equipment needs to be hoisted and transferred to a device or location such as the packaging support assembly 13 or the air inlet 111 that cooperates with the mounting section 114, the corresponding equipment can be hoisted to the target workstation using a rope or other mechanism in conjunction with the mounting ring 117. This reduces the labor intensity of the workers, avoids bumps and damage to the equipment during movement and installation, and significantly improves the safety and efficiency of the workers when performing related operations in the ventilation duct 11.

[0057] Furthermore, a transfer ring 124 is fixedly provided on the top inner wall of the wind pavilion 12, and the transfer ring 124 is arranged vertically above the preparation section 113. When equipment or materials need to be transferred from the surface to the inside of the ventilation duct 11, or when equipment or materials need to be transferred from the inside of the ventilation duct 11 to the surface, the corresponding equipment can be hoisted to the target workstation by using a selection mechanism such as a rope in conjunction with the transfer ring 124, thereby reducing the labor intensity of the staff, avoiding bumps and damages during the equipment movement and installation operations, and significantly improving the operational safety and efficiency of the staff when performing related operations in the ventilation duct 11.

[0058] It is not difficult to see that the installation structure and usage of the transfer lifting ring 124 are basically the same as the installation lifting ring 117 mentioned above. Accordingly, the transfer lifting ring 124 and the installation lifting ring 117 can also be installed to the corresponding positions of the wind pavilion 12 or the ventilation channel 11 by pre-embedded integrated installation or bolt fastening, just like the step handle 116 mentioned above, to ensure the installation strength and the load-bearing capacity during subsequent lifting operations, thereby improving the reliability of related lifting operations and the safety of workers and related equipment.

[0059] On the other hand, the packaging support assembly 13 includes a seismic-resistant bracket 132 fixedly mounted at the air inlet 111, and a plurality of sealing plates 133 detachably mounted on the seismic-resistant bracket 132. The outer ends of the sealing plates 133 are in close contact with the inner wall of the ventilation channel 11, and the inner ends of the sealing plates 133 circumferentially enclose the ventilation holes 131. The axial fan 14 is detachably mounted on the seismic-resistant bracket 132. The seismic-resistant bracket 132 provides stable and reliable structural support and ample installation space for the axial fan 14, ensuring smooth and continuous operation of the axial fan 14. Furthermore, the sealing plates 133 ensure airtightness at locations other than the ventilation holes 131 at the air inlet 111, ensuring that gas exchange between the interior of the power tunnel 21 and the ventilation channel 11 is completed through the ventilation holes 131 and the axial fan 14, thereby ensuring the corresponding airflow conduction effect and ventilation efficiency.

[0060] Generally speaking, the seismic bracket 132 can be a beam-type structural component assembled by welding steel sections, or it can be other metal material components formed in one piece or assembled. In addition, an anchor plate 134 can be arranged on the inner cavity side wall of the ventilation channel 11 to serve as the installation fulcrum and reference structure of the seismic bracket 132. The seismic bracket 132 is reliably connected to the anchor plate 134 and the side wall of the ventilation channel 11 by bolts to ensure the installation strength and assembly structure reliability between the seismic bracket 132 and the ventilation channel 11.

[0061] Accordingly, the sealing plate 133 can be made of aluminum or engineering plastic, or other materials that ensure a certain level of structural strength and can be securely pressed against the inner wall of the ventilation duct 11. In fact, after the anti-seismic bracket 132 is securely mounted on the inner wall of the ventilation duct 11 using high-strength bolts, epoxy resin can be poured into the structural gap between the edge of the anti-seismic bracket 132 and the inner wall of the ventilation duct 11 to fill the gap and ensure a basic sealing effect at the joint between the package support assembly 13 and the ventilation duct 11. Combined with the alignment of the sealing plate 133, this can effectively ensure the operating efficiency of the axial flow fan 14 and optimize the ventilation effect of the power tunnel ventilation system.

[0062] Specifically, a positioning seat 135 is provided at the top of the anti-seismic bracket 132, and the axial flow fan 14 is mounted on the positioning seat 135. In addition, a number of limiting angle steels 136 that can be snap-fitted with the top corners and outer edges of the positioning seat 135 are detachably provided on the anti-seismic bracket 132. The positioning seat 135 can serve as a direct assembly connection member for the axial flow fan 14, and is used as a transition connection member between the anti-seismic bracket 132 and the axial flow fan 14, thereby improving the assembly structure stability and installation accuracy between the anti-seismic bracket 132 and the axial flow fan 14. In addition, the detachable connection structure between the axial flow fan 14 and the anti-seismic bracket 132 can also be realized through the detachable matching structure between the positioning seat 135 and the axial flow fan 14 and the anti-seismic bracket 132.

[0063] On this basis, each limiting angle steel 136 can form a moderate limiting lock on the assembly position of the positioning seat 135 on the seismic bracket 132, so as to prevent loosening or dislocation between the positioning seat 135 and the seismic bracket 132 during the operation of the equipment, thereby further improving the installation strength and structural stability between the axial flow fan 14 and the seismic bracket 132.

[0064] In addition, the limiting angle steel 136 is provided with a shock-absorbing gasket 137 positioned in alignment with the bottom of the positioning seat 135. The shock-absorbing gasket 137 is typically a rubber gasket or a silicone gasket, and a metal gasket with a certain degree of elastic deformation can also be used to further alleviate the structural vibration generated during the operation of the axial flow fan 14, thereby preventing such structural vibration from adversely affecting the mounting structure of the main support components such as the anti-seismic bracket 132. This further improves the structural reliability of the mounting structure between the axial flow fan 14 and the package support assembly 13, and the operational stability of the axial flow fan 14. It also moderately reduces the noise generated during the operation of the power tunnel ventilation system, reducing adverse effects on the surrounding environment.

[0065] In summary, the power tunnel ventilation system provided in the present invention utilizes ventilation channels as airflow channels for ventilation and air exchange in the power tunnel during its assembly, arrangement and application, and is combined with axial flow fans as airflow guides and drive devices, thereby eliminating the need for additional airflow auxiliary guides and accommodating devices such as air ducts. Moreover, the wind pavilion serves as the connection terminal between the entire power tunnel ventilation system and the external atmospheric environment, and only ventilation channels are required between it and the power tunnel to complete the arrangement of the airflow conduction structure. Therefore, the wind pavilion can be arranged at a position required by the working conditions or allowed by environmental planning according to different working environment requirements, and the structure of the ventilation channel connecting the wind pavilion and the power tunnel can be flexibly adjusted and arranged according to the corresponding working conditions. There is no need to arrange the wind pavilion close to the core underground facilities of the ventilation system such as the working shaft as is generally done in the prior art, thereby greatly optimizing the supporting settings and equipment layout structure of the power tunnel ventilation system, significantly improving the adaptation effect of the power tunnel ventilation system to the actual assembly space layout, and effectively improving the working condition adaptability and corresponding equipment layout convenience of the power tunnel ventilation system.

[0066] The above describes in detail the power tunnel ventilation system provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A power tunnel ventilation system, characterized in that: The system comprises a ventilation channel arranged underground and above the power tunnel, and a wind pavilion arranged on the ground and connected to the external environment, wherein the air inlet of the ventilation channel is connected to the top of the power tunnel, and the air outlet of the ventilation channel is connected to the bottom of the wind pavilion; A packaging support assembly is provided at the air inlet of the ventilation channel, the outer edge of the packaging support assembly is tightly attached to and fixedly connected to the inner wall of the ventilation channel, the middle portion of the packaging support assembly has a ventilation hole for air to pass through, an axial flow fan is provided on the packaging support assembly, the air inlet end of the axial flow fan is aligned and connected to the top of the ventilation hole, and the air outlet end of the axial flow fan is connected to the ventilation channel; The side wall of the wind pavilion is provided with at least one operating window for airflow and materials to pass through; The ventilation channel includes a preparation section extending in a vertical direction and having its top end connected to the bottom of the wind pavilion, and an installation section extending in a vertical direction and having its bottom end connected to the top of the power tunnel, and also includes a bearing section connected between the bottom end of the preparation section and the top end of the installation section, the air inlet is located at the bottom end of the installation section, and the air outlet is located at the top end of the preparation section; The bearing section extends in a horizontal direction, and the inner cavity height of the bearing section is not less than 1.5 meters.

2. The power tunnel ventilation system according to claim 1, characterized in that: The side wall of the preparation section is provided with a plurality of step handles which are evenly arranged in sequence along the vertical direction.

3. The power tunnel ventilation system according to claim 1, characterized in that: A mounting ring is fixedly provided on the top inner wall of the bearing section, and the mounting ring is arranged above the mounting section in a vertical direction.

4. The power tunnel ventilation system according to claim 3, characterized in that: A transfer ring is fixedly provided on the top inner wall of the wind pavilion, and the transfer ring is arranged above the preparation section in a vertical direction.

5. The power tunnel ventilation system according to claim 1, characterized in that: The packaging support assembly includes an anti-vibration bracket fixedly arranged at the air inlet, and also includes a plurality of sealing plates detachably arranged on the anti-vibration bracket, wherein the outer ends of the sealing plates are closely matched with the inner walls of the ventilation channel, and the inner ends of the sealing plates are circumferentially enclosed to form the ventilation hole; The axial flow fan is detachably mounted on the anti-seismic bracket.

6. The power tunnel ventilation system according to claim 5, characterized in that: A positioning seat is provided on the top of the anti-seismic support, the axial flow fan is installed on the positioning seat, and the anti-seismic support is detachably provided with a plurality of limiting angle steels that can be snap-fitted with the top corners and outer edges of the positioning seat.

7. The power tunnel ventilation system according to claim 6, characterized in that: The limiting angle steel is provided with a shock-absorbing gasket arranged in a corresponding position at the bottom of the positioning seat.

8. The power tunnel ventilation system according to claim 1, characterized in that: The ventilation channel is made of concrete.

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