Tunnel cooling system

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a tunnel cooling system which is movably arranged in a tunnel and comprises a barrel body and a cooling barrel, the cooling barrel is arranged in the barrel body, a plurality of cooling holes are formed in the periphery of the cooling barrel, a fan is arranged in the cooling barrel, and the fan is arranged in the cooling barrel. A rotating cylinder is rotationally arranged on the side, close to the air outlet end, of the cooling cylinder, a flowing cavity is formed between the cooling cylinder and the cylinder body, and the flowing cavity communicates with the inner wall of the rotating cylinder and the cooling pipe; when the cooling pipe conveys flowing water flow to the flowing cavity, the flowing water flow passes through the inner wall of the rotary drum and moves to the air outlet portion through the cooling holes, water mist is formed along with airflow blown by the fan and sprayed into the tunnel, in addition, due to the existence of the flowing water flow in the flowing cavity, the fan is cooled in real time, and the cooling efficiency is improved. Therefore, wind airflow and water mist formed by the fan are always kept in a relatively low range, the problem that cooling efficiency is reduced due to the fact that cooling equipment is affected by heat radiation after working for a long time in the prior art is solved, and efficient cooling of the tunnel is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field especially relates to a tunnel cooling system. BACKGROUND

[0002] Tunnel construction process will encounter all sorts of problems, one of the bigger problems is the high temperature in the tunnel, due to the increase of tunnel depth and the effect of other heat sources (such as construction machinery, blasting, etc.), high temperature has become the main factor restricting tunnel construction safety, schedule.

[0003] The existing cooling equipment mainly adopts the form of axial flow fan and wind belt, and the ventilation equipment in this form is difficult to effectively reduce the tunnel face temperature, and most construction teams increase the number of axial flow fans to reduce the temperature, but pure ventilation cannot reduce the ambient temperature.

[0004] In addition, a variety of products for cooling through water mist have been proposed in the prior art, but most of the products generate fine water mist through the fog cannon and blow it out, which is very inconvenient to use because the fog cannon is large in size and needs to be manually carried. At the same time, the water mist particles of the fog cannon are relatively coarse and the water consumption is large, which can easily cause the construction site to be muddy, which is not conducive to the popularization and application of such products. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a tunnel cooling system, which aims to solve the problem of reduced cooling efficiency due to heat radiation after long-term operation of the cooling equipment in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides a tunnel cooling system, which is movably arranged in a tunnel, and comprises a cylinder and a cooling cylinder, the cooling cylinder is arranged in the inside of the cylinder, a plurality of cooling holes are formed in the outer periphery of the cooling cylinder, a fan is arranged in the cooling cylinder, a rotating drum is rotatably arranged on one side of the cooling cylinder close to the air outlet end, a flow cavity is formed between the cooling cylinder and the cylinder, and the flow cavity is in communication with the inner wall of the rotating drum and the cooling pipe.

[0007] Optionally, the inner wall of the rotating drum is fixedly connected with a plurality of cooling leaves, and the cooling leaves are arranged on the inner side of the cooling cylinder.

[0008] Optionally, a plurality of cooling grooves are spirally formed in the inner wall of the rotating drum.

[0009] Optionally, the end of the cooling groove is in communication with the flow cavity.

[0010] Optionally, a plurality of adjusting members are arranged on the outer periphery of the cylinder, and the free end of the adjusting member is arranged on the moving plate.

[0011] Optionally, a plurality of cooling leaves are arranged on the inner wall of the cooling cylinder in an inclined manner, and the rotation direction of the cooling leaves is opposite to the rotation direction of the fan.

[0012] Optionally, the bottom of the barrel is provided with a heat exchanger.

[0013] Optionally, the inside of the heat exchanger is provided with an S-shaped flow channel, which is communicated with the cooling pipe.

[0014] Optionally, the moving plate is slidingly arranged on the track in the tunnel.

[0015] Optionally, the barrel is further provided with a spray pipe, the barrel is provided with a plurality of beating rods on the side close to the fan, a spraying member is movably penetrated through the barrel, one end of the spraying member is intermittently abutted with the beating rod, and the other end is arranged outside the outlet of the spray pipe.

[0016] The tunnel cooling system provided in the embodiment of the utility model realizes the evaporation and heat absorption of water mist at the same time of wind cooling by combining and improving the traditional fan and the fog gun machine, specifically by arranging a barrel outside the fan cooling cylinder, rotating a rotating cylinder at the air outlet end of the cooling cylinder, arranging the space between the barrel and the cooling cylinder as a flow cavity, communicating the flow cavity with the inside of the rotating cylinder, arranging a plurality of cooling holes on the side of the cooling cylinder close to the air outlet, based on the above structure, when the cooling pipe transports the flowing water to the flow cavity, under the action of water pressure, the flowing water moves to the air outlet part through the inner wall of the rotating cylinder via the cooling holes, and the water mist is sprayed into the tunnel along with the airflow blown by the fan, in addition, the existence of the flowing water in the flow cavity can cool the fan in real time while cooling, so that the airflow and the water mist formed by the fan always remain in a relatively low range, solve the problem that the cooling efficiency of the cooling equipment in the prior art is reduced due to the influence of heat radiation after long time work, and realize the efficient cooling of the tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the cross section structure schematic diagram of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the rotating cylinder of the utility model;

[0020] Figure 4 It is the structure schematic diagram of the embodiment 4 of the utility model;

[0021] Reference signs:

[0022] 1-barrel, 2-cooling cylinder, 3-cooling hole, 4-fan, 5-rotating cylinder, 6-flow cavity, 7-cooling pipe, 8-cooling blade, 9-cooling groove, 10-adjusting member, 11-heat exchanger, 12-spray pipe, 13-beating rod, 14-spraying member, 15-moving plate.

[0023] The purposes, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0026] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, if the embodiments of the utility model involve "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0028] Embodiment 1:

[0029] Please refer to the drawings Figure 1 to the drawings Figure 3In the embodiment, a tunnel cooling system is provided, which is arranged in the tunnel, and comprises a barrel 1 and a cooling barrel 2. The cooling barrel 2 is arranged in the barrel 1, and a plurality of cooling holes 3 are arranged on the outer periphery of the cooling barrel 2. A fan 4 is arranged in the cooling barrel 2. A rotating barrel 5 is rotatably arranged on the side of the cooling barrel 2 close to the air outlet end. A flow cavity 6 is formed between the cooling barrel 2 and the barrel 1. The flow cavity 6 is in communication with the inner wall of the rotating barrel 5 and a cooling pipe 7.

[0030] It should be noted that in the prior art, the existing cooling equipment mainly adopts the form of axial flow fan 4 and air belt. The ventilation equipment in this form is difficult to effectively reduce the temperature of the tunnel face. Taking a fog cannon machine as an example, the water mist particles of the fog cannon machine are relatively thick and the water consumption is large, which can easily cause the construction site to be muddy.

[0031] Based on the above problems, the embodiment provides a tunnel cooling system. The traditional fan 4 and the fog cannon machine are combined and improved to realize the wind cooling and the evaporation and heat absorption of the water mist at the same time. Specifically, the barrel 1 is arranged outside the fan 4 cooling barrel 2. A rotating barrel 5 is rotatably arranged on the air outlet end of the cooling barrel 2. The space between the barrel 1 and the cooling barrel 2 is arranged as a flow cavity 6. The flow cavity 6 is in communication with the inner wall of the rotating barrel 5. A plurality of cooling holes 3 are arranged on the side of the cooling barrel 2 close to the air outlet. Based on the above structure, it can be understood that when the cooling pipe 7 transports the flowing water to the flow cavity 6, under the action of water pressure, the water mist is moved to the air outlet part through the inner wall of the rotating barrel 5 through the cooling holes 3, and is sprayed into the tunnel together with the air flow blown by the fan 4.

[0032] It should be noted that since the tunnel is a relatively closed space, the traditional fan 4 or fog cannon machine will have a certain temperature after working for a long time under the action of heat radiation. The wind power airflow and water mist generated thereby will also have a certain temperature, which seriously reduces the subsequent cooling efficiency. For the cooling structure in the embodiment, the flowing water in the flow cavity 6 can cool the fan 4 in real time while cooling, so that the wind power airflow and water mist formed by the fan 4 always remain in a relatively low range, thereby increasing the cooling effect.

[0033] In the embodiment, the inner wall of the rotating barrel 5 is fixedly connected with a plurality of cooling leaves 8, and the cooling leaves 8 are arranged on the inner side of the cooling barrel 2.

[0034] In some embodiments, the plurality of cooling leaves 8 are inclinedly arranged on the inner wall of the cooling barrel 2, and the rotation direction of the cooling leaves 8 is opposite to the rotation direction of the fan 4.

[0035] It should be noted that the inclined direction of the cooling leaves 8 and the airflow direction of the fan 4 form a counteracting force. When the fan 4 drives the airflow through the cooling cylinder 2, the counter-arranged cooling leaves 8 force the rotating drum 5 to rotate in the opposite direction of the fan 4 under the impact of the airflow; this reverse rotation not only prolongs the contact time of the airflow and the inner wall of the rotating drum 5, but also more evenly distributes the water flow transported in the flow cavity 6 to the cooling holes 3 through the centrifugal force, so that the water mist particles are further refined in the airflow of the fan 4. The refined water mist has a larger surface area, accelerates the evaporation and heat absorption process, and thus significantly improves the cooling efficiency.

[0036] It should also be noted that the spiral inclined structure of the cooling leaves 8 enhances the dynamic coupling of the airflow and the rotating drum 5. The rotation of the rotating drum 5 drives the cooling leaves 8 to form a vortex effect, which promotes the mixing of the water mist and the high-temperature airflow, avoiding the problem of local water accumulation or mud caused by coarse water mist particles in traditional fog cannons. At the same time, the continuous rotation of the rotating drum 5 causes the water mist to be sprayed in a diffused manner, covering a wider range and solving the problem of uneven temperature distribution in the tunnel. In addition, the cooling leaves 8 and the cooling water flow in the flow cavity 6 work together: when the water flow passes through the flow cavity 6, it not only cools the rotating drum 5 and the fan 4 in real time to prevent performance degradation due to heat radiation, but also uniformly transmits the cooling effect to the entire system through the rotation of the cooling leaves 8, ensuring that the airflow temperature output by the fan 4 is always at a low level.

[0037] In this embodiment, the inner wall of the rotating drum 5 is spirally provided with a plurality of cooling grooves 9.

[0038] In some embodiments, the ends of the cooling grooves 9 are in communication with the flow cavity 6.

[0039] It can be understood that the geometric design of the spiral groove significantly prolongs the flow path of the water flow in the inner wall of the rotating drum 5, causing the water flow to be uniformly dispersed to the cooling holes 3 under the action of centrifugal force. When the rotating drum 5 rotates with the airflow of the fan 4, the spiral groove guides the water flow to spread outward along a spiral trajectory, forming a dynamic water throwing effect that cuts the water flow into even smaller droplets.

[0040] Compared with the coarse particle water mist directly sprayed by traditional fog cannons, this atomization mechanism significantly increases the surface area of the water mist, accelerates the evaporation and heat absorption process, and thus enhances the cooling efficiency; the ends of the spiral grooves are in communication with the flow cavity 6, ensuring the continuous supply and circulation of the cooling water flow; the low-temperature water flow in the flow cavity 6 enters the inside of the rotating drum 5 through the cooling grooves 9, not only providing a stable water source for water mist generation, but also achieving real-time heat dissipation through the contact between the water flow and the inner wall of the rotating drum 5.

[0041] Embodiment 2:

[0042] The outer periphery of the cylinder body 1 is provided with a plurality of adjusting members 10, and the free ends of the adjusting members 10 are arranged on the moving plate 15.

[0043] In some embodiments, the moving plate 15 is slidingly arranged on a track in the tunnel.

[0044] It can be understood that the adjusting member 10 realizes precise control of the height of the barrel 1 through mechanical transmission. For example, when the tunnel face is locally high in temperature due to mechanical operation, lifting the height of the barrel 1 can make the water mist directly cover the top heat source, expanding the vertical cooling range. In a narrow area, lowering the height can concentrate the mixing effect of airflow and water mist, avoiding resource waste. The multi-degree-of-freedom design of the adjusting member 10 also supports adjustment of the inclination angle of the barrel 1, so that the water mist spraying path matches the shape of the tunnel cross section, further enhancing the uniformity of cooling.

[0045] In some embodiments, the preferred structure of the adjusting member 10 is a hydraulic rod or a screw rod, etc.

[0046] In addition, through the sliding cooperation of the moving plate 15 and the pre-installed track in the tunnel, the problem of low moving efficiency caused by the dependence of traditional equipment on manual carrying or fixed installation is solved. The track system is laid along the longitudinal depth of the tunnel, so that the cooling system can automatically or semi-automatically move with the construction progress, without the need for repeated disassembly and assembly. For example, in long-distance tunnel construction, the system can be segmented and pushed along the track, ensuring that the cooling coverage is synchronized with the tunneling operation, and avoiding temperature out of control in local areas due to equipment lag.

[0047] Embodiment 3:

[0048] In this embodiment, the bottom of the barrel 1 is provided with a heat exchanger 11.

[0049] In this embodiment, the inside of the heat exchanger 11 is provided with an S-shaped flow channel, which is in communication with the cooling pipe 7.

[0050] It can be understood that the heat exchanger 11, as the heat exchange core module, is in direct communication with the flow cavity 6 and the cooling pipe 7, forming a water circulation system. After the cooling water flow in the flow cavity 6 absorbs the waste heat generated by the operation of the fan 4 and the rotating drum 5, the high-temperature water flow is introduced into the inside of the heat exchanger 11 through the cooling pipe 7. The inside adopts an S-shaped flow channel design. The flow channel greatly extends the water flow path through a plurality of continuous bending structures, and utilizes the heat exchange interface between the flow channel wall surface and the external environment to efficiently export the heat in the water flow.

[0051] Embodiment 4:

[0052] As shown in the accompanying drawings, Figure 4 In this embodiment, the barrel 1 is also provided with a spray pipe 12, and the side of the rotating drum 5 close to the fan 4 is provided with a plurality of beating rods 13. A spraying member 14 is movably penetrated through the barrel 1, one end of the spraying member 14 intermittently abuts against the beating rod 13, and the other end is placed outside the outlet of the spray pipe 12.

[0053] It can be understood that when the rotating drum 5 rotates with the airflow of the fan 4, the beaters 13 periodically hit the spray members 14, forcing the spray members 14 to reciprocate, thereby intermittently shielding the water outlets of the spray pipes 12. This mechanical intermittent opening and closing mechanism optimizes the cooling effect in the following ways: first, the reciprocating movement of the spray members 14 cuts the continuous water flow into pulsed jets, and the pulsed water flow is further torn into micron-sized water mist particles in the high-speed airflow, which significantly increases the surface area compared to the traditional continuous spraying of coarse particle water mist, accelerates the evaporation and heat absorption process, and increases the cooling efficiency by about 25%-30%. Second, the intermittent spraying mode dynamically adjusts the water flow per unit time, avoids local water accumulation or mud caused by excessive saturated spraying, and reduces the overall water consumption, saving water resources by 15%-20% under the same cooling effect.

[0054] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A tunnel cooling system, characterized by, The system is arranged in a tunnel, comprising a barrel and a cooling barrel, the cooling barrel is arranged in the barrel, the outer periphery of the cooling barrel is provided with a plurality of cooling holes, a fan is arranged in the cooling barrel, a rotating barrel is rotatably arranged on the side of the cooling barrel close to the air outlet end, a flow cavity is formed between the cooling barrel and the barrel, and the flow cavity is communicated with the inner wall of the rotating barrel and the cooling pipe.

2. A tunnel cooling system as claimed in claim 1, wherein, The inner wall of the rotating barrel is fixedly connected with a plurality of cooling leaves, and the cooling leaves are arranged on the inner side of the cooling barrel.

3. A tunnel cooling system as claimed in claim 1, wherein, The inner wall of the rotating barrel is spirally provided with a plurality of cooling grooves.

4. A tunnel cooling system as claimed in claim 3, wherein, The end of the cooling groove is communicated with the flow cavity.

5. A tunnel cooling system as defined in claim 1, wherein, The outer periphery of the barrel is provided with a plurality of adjusting members, and the free end of the adjusting member is arranged on the moving plate.

6. A tunnel cooling system as defined in claim 2, wherein, A plurality of the cooling leaves are arranged on the inner wall of the cooling barrel in an inclined manner, and the rotation direction of the cooling leaves is opposite to the rotation direction of the fan.

7. A tunnel cooling system as defined in claim 1, wherein, The bottom of the barrel is provided with a heat exchanger.

8. A tunnel cooling system as claimed in claim 7, wherein, The inside of the heat exchanger is provided with an S-shaped flow channel, and the flow channel is communicated with the cooling pipe.

9. A tunnel cooling system as claimed in claim 5, wherein, The moving plate is slidably arranged on the track in the tunnel.

10. A tunnel cooling system as claimed in claim 1, wherein, The barrel is further provided with a spray pipe, the side of the rotating barrel close to the fan is provided with a plurality of beating rods, the spray pipe is movably penetrated on the barrel, one end of the spray pipe is intermittently abutted with the beating rod, and the other end is arranged outside the outlet of the spray pipe.

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