CN211144850U - Diversion type jet fan for spiral tunnel - Google Patents
Diversion type jet fan for spiral tunnel Download PDFInfo
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- CN211144850U CN211144850U CN201922182393.3U CN201922182393U CN211144850U CN 211144850 U CN211144850 U CN 211144850U CN 201922182393 U CN201922182393 U CN 201922182393U CN 211144850 U CN211144850 U CN 211144850U
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Abstract
The utility model discloses a water conservancy diversion formula efflux fan for spiral tunnel belongs to tunnel ventilation equipment technical field. The device comprises a jet fan, a silencer and a curved guide cylinder; the jet fan consists of a fan cylinder, a motor bracket and fan blades; the silencer consists of a silencing barrel and a sound absorption material; the curved guide shell is composed of a curved shell and a direction adjusting screw. The mufflers are arranged at the two ends of the jet fan, so that the noise can be greatly reduced, and the equipment can be kept to operate quietly; the outer end of the silencer is provided with the curved guide cylinder, so that the air inlet and outlet direction of the jet fan can be kept consistent with the driving direction of the spiral tunnel, fire smoke in the tunnel can be smoothly discharged out of the tunnel, and rescue under the fire working condition of the tunnel is facilitated; the connecting ring of the curved barrel is provided with a plurality of adjusting screw holes, and the opening orientation of the curved barrel can be adjusted to be matched with the driving direction of the spiral tunnel by rotating the curved barrel according to the gears of the adjusting screw holes.
Description
Technical Field
The utility model relates to a water conservancy diversion formula efflux fan for spiral tunnel belongs to tunnel ventilation equipment technical field.
Background
The spiral tunnel is a driving tunnel which is built in a mountain and ascends or descends in a spiral manner, so that the function of winding up the mountain to drive the vehicle in the mountain is realized. The spiral tunnel structure comprises a curve structure and a structure with the longitudinal gradient changing from an up slope to a down slope, and the line continuously spirals in a clockwise or anticlockwise direction to change the height by length. The spiral tunnel is an ideal scheme for reducing the driving gradient of the tunnel, avoiding tunnel faults, reducing the fall between the entrance of the tunnel and the exit of the tunnel and ensuring the climbing safety of a driving route.
The major structure of spiral tunnel is the curve, and the vehicle is along tunnel curve driving in the tunnel always, and there is the slope change on the road surface all the time, and to the tunnel that goes up a slope, automobile exhaust emission is big than sharp tunnel, and distributes along the tunnel dispersion, and the dilution degree of difficulty is big, and along with the extension in tunnel, it becomes very difficult to ventilate to discharge fume. For the plateau high-altitude spiral tunnel, the atmospheric pressure in the uphill tunnel is gradually reduced along the vehicle driving direction, the total small air volume requirement in the tunnel is increased, the longer the tunnel is, the larger the ventilation resistance of the curve pipe network is, the larger the ventilation and smoke exhaust difficulty is, and the running time of the operation ventilation system needs to be prolonged.
Aiming at the spiral tunnel, the jet fan used by the linear tunnel cannot meet the requirements of ventilation and smoke exhaust. The vehicle always drives along the curve of the tunnel in the tunnel, and the air flowing direction in the tunnel is also a curve; the air inlet direction and the air outlet direction of a jet fan arranged in the tunnel are completely consistent with the traveling direction, so that the jet fan can be kept to operate at the highest efficiency point, and the optimal ventilation effect is ensured during the operation of the tunnel; especially under the conflagration operating mode, the business turn over wind direction and the driving direction of efflux fan keep the complete unanimity, and be exactly unanimous with the whole circuit trend in tunnel completely, just so can discharge the conflagration smog in the tunnel outside the tunnel hole smoothly, can not form smog swirl in the tunnel, be favorable to the rescue of tunnel conflagration operating mode. The existing jet fan is linear in air inlet and outlet direction, and ventilation efficiency is low in the spiral tunnel, so that the flow guide type jet fan for the spiral tunnel is designed, and the ventilation efficiency of the jet fan can be further improved according to the structural characteristics of the spiral tunnel.
Disclosure of Invention
The utility model discloses the technical problem that will solve lies in: the utility model provides a water conservancy diversion formula efflux fan for spiral tunnel, it has solved present efflux fan business turn over wind direction and is the linear type, in spiral tunnel, and ventilation efficiency is lower problem.
The utility model discloses the technical problem that will solve takes following technical scheme to realize:
a diversion type jet fan for a spiral tunnel comprises a jet fan, a silencer and a curved guide cylinder;
the jet fan is composed of a fan cylinder, a motor bracket and fan blades, wherein the motor and the fan cylinder are arranged coaxially;
the silencer is composed of a silencing barrel and sound absorption materials, the two ends of the fan barrel are respectively fixed with the silencing barrel, and the inner wall of the silencing barrel is provided with a layer of sound absorption materials;
the curved draft tube is composed of a curved tube body and direction adjusting screws, one end of the curved tube body is provided with a connecting ring which is tightly inserted into one end of the silencing tube body, a plurality of adjusting screw holes distributed along the circumference are formed in the connecting ring at equal intervals, one curved tube body is inserted into the outer end of each silencing tube body, and the direction adjusting screws penetrate through the outer side of the silencing tube body and are screwed into the adjusting screw holes.
As a preferred example, the sound absorption material is centrifugal glass wool sound absorption material. The fibers in the centrifugal glass wool are fluffy and staggered, a large number of tiny pores exist, and the centrifugal glass wool is a typical porous sound absorption material and has good sound absorption characteristics.
As a preferable example, the circumference of the connecting ring is provided with an adjusting screw hole at an interval of 5 degrees, and the curved cylinder and the silencing cylinder are fixed from the periphery by adopting 4 direction adjusting screws.
As a preferable example, a conical air guide sleeve is coaxially fixed at the end part of the fan cylinder body, and the conical air guide sleeve is fixed at the windward end of the motor through a supporting plate.
As a preferred example, the motor adopts a forward and reverse rotating motor.
The utility model has the advantages that:
(1) the mufflers are arranged at the two ends of the jet fan, so that the noise can be greatly reduced, and the equipment can be kept to operate quietly;
(2) the curved guide cylinder is arranged at the outer end of the silencer, the curved cylinder can keep the air inlet and outlet direction of the jet fan consistent with the driving direction of the spiral tunnel, fire smoke in the tunnel can be smoothly discharged out of the tunnel, smoke vortex cannot be formed in the tunnel, and rescue under the fire working condition of the tunnel is facilitated;
(3) a plurality of adjusting screw holes are formed in a connecting ring of the curved barrel, the curved barrel is rotated according to the gear positions of the adjusting screw holes, the opening direction of the curved barrel can be adjusted to be matched with the driving direction of the spiral tunnel, and the plurality of guide flow type jet fans are matched with one another in a front-back mode, so that air flow in the spiral tunnel can be relayed in a front-back mode, and ventilation and smoke exhaust efficiency is improved;
(4) the bidirectional ventilation function is realized by adopting a forward and reverse rotating motor, and the wind resistance can be reduced by arranging the conical air guide sleeve at the windward end of the motor.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a connection structure of a curved cylinder and a silencing cylinder;
fig. 3 is a schematic structural view of the utility model with a conical air guide sleeve.
In the figure: the fan comprises a fan cylinder 1, a motor 2, a motor support 3, fan blades 4, a noise elimination cylinder 5, a sound absorption material 6, a curved cylinder 7, a connecting ring 71, an adjusting screw hole 72, a direction adjusting screw 8, a conical air guide sleeve 9 and a supporting plate 10.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.
As shown in fig. 1-3, a flow-guiding type jet fan for a spiral tunnel comprises a jet fan, a silencer and a curved flow-guiding cylinder;
the jet fan is composed of a fan cylinder 1, a motor 2, a motor support 3 and fan blades 4, wherein the motor 2 and the fan cylinder 1 are coaxially arranged, the motor 2 is fixed in the fan cylinder 1 through the motor support 3, and the fan blades 4 are fixed on a rotating shaft of the motor 2;
the silencer consists of a silencing barrel 5 and sound absorption materials 6, wherein the silencing barrel 5 is fixed at each of two ends of the fan barrel 1 in a threaded manner, and a layer of sound absorption materials 6 is arranged on the inner wall of the silencing barrel 5;
the curved guide cylinder is composed of a curved cylinder body 7 and direction adjusting screws 8, one end of the curved cylinder body 7 is provided with a connecting ring 71 which is tightly inserted into one end of the silencing cylinder body 5, the connecting ring 71 is provided with a plurality of adjusting screw holes 72 which are distributed along the circumference at equal intervals, the outer end of each silencing cylinder body 5 is inserted into one curved cylinder body 7, and the direction adjusting screws 8 penetrate through the silencing cylinder body 5 from the outer side and are screwed into the adjusting screw holes 72.
The sound absorption material 6 is made of centrifugal glass wool sound absorption material. The fibers in the centrifugal glass wool are fluffy and staggered, a large number of tiny pores exist, and the centrifugal glass wool is a typical porous sound absorption material and has good sound absorption characteristics.
The circumference of the connecting ring 71 is provided with an adjusting screw hole 72 at an interval of 5 degrees, and the curved cylinder 7 and the silencing cylinder 5 are fixed from the periphery by adopting 4 direction adjusting screws 8.
The end part of the fan cylinder 1 is coaxially fixed with a conical air guide sleeve 9, and the conical air guide sleeve 9 is fixed at the windward end of the motor 2 through a support plate 10. The conical air guide sleeve 9 is suspended and fixed at the end part of the fan cylinder 1 and is positioned at the windward end of the motor 2 by adopting an upper supporting plate 10 and a lower supporting plate 10.
The motor 2 adopts a positive and negative rotation motor.
The working principle is as follows:
the mufflers are arranged at the two ends of the jet fan, so that the noise can be greatly reduced, and the equipment can be kept to operate quietly; the curved guide cylinder 7 is arranged at the outer end of the silencer, the curved cylinder 7 can keep the air inlet and outlet direction of the jet fan consistent with the driving direction of the spiral tunnel, fire smoke in the tunnel can be smoothly discharged out of the tunnel, smoke vortex cannot be formed in the tunnel, and rescue under the fire condition of the tunnel is facilitated; a plurality of adjusting screw holes 72 are formed in the connecting ring 71 of the curved cylinder 7, the curved cylinder 7 is rotated according to the gears of the adjusting screw holes 72, the opening direction of the curved cylinder 7 can be adjusted to be matched with the driving direction of the spiral tunnel, and a plurality of flow guide type jet fans are matched with one another in a front-back mode, so that air flow in the spiral tunnel can be relayed in a front-back mode, and ventilation and smoke exhaust efficiency is improved; the bidirectional ventilation function is realized by adopting a forward and reverse rotating motor, and the wind resistance can be reduced by arranging the conical air guide sleeve 9 at the windward end of the motor 2.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A diversion type jet fan for a spiral tunnel is characterized by comprising a jet fan, a silencer and a curved guide cylinder;
the jet fan is composed of a fan cylinder, a motor bracket and fan blades, wherein the motor and the fan cylinder are arranged coaxially;
the silencer is composed of a silencing barrel and sound absorption materials, the two ends of the fan barrel are respectively fixed with the silencing barrel, and the inner wall of the silencing barrel is provided with a layer of sound absorption materials;
the curved draft tube is composed of a curved tube body and direction adjusting screws, one end of the curved tube body is provided with a connecting ring which is tightly inserted into one end of the silencing tube body, a plurality of adjusting screw holes distributed along the circumference are formed in the connecting ring at equal intervals, one curved tube body is inserted into the outer end of each silencing tube body, and the direction adjusting screws penetrate through the outer side of the silencing tube body and are screwed into the adjusting screw holes.
2. The flow-guiding type jet fan for the spiral tunnel according to claim 1, wherein the sound-absorbing material is centrifugal glass wool sound-absorbing material.
3. The flow guide type jet fan for the spiral tunnel according to claim 1, wherein the connecting ring is provided with an adjusting screw hole at an interval of 5 degrees on the circumference, and 4 direction adjusting screws are adopted to fix the curved cylinder and the silencing cylinder from the periphery.
4. The flow-guiding type jet fan for the spiral tunnel according to claim 1, wherein a conical air guide sleeve is coaxially fixed at the end of the fan cylinder, and the conical air guide sleeve is fixed at the windward end of the motor through a support plate.
5. The flow-guiding type jet fan for the spiral tunnel according to claim 1, wherein the motor is a forward and reverse rotating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182393.3U CN211144850U (en) | 2019-12-03 | 2019-12-03 | Diversion type jet fan for spiral tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182393.3U CN211144850U (en) | 2019-12-03 | 2019-12-03 | Diversion type jet fan for spiral tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN211144850U true CN211144850U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922182393.3U Active CN211144850U (en) | 2019-12-03 | 2019-12-03 | Diversion type jet fan for spiral tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022183430A1 (en) * | 2021-03-04 | 2022-09-09 | 贵州省交通规划勘察设计研究院股份有限公司 | Mechanical ventilation pipe capable of adjusting direction of pipe opening, and use method thereof |
-
2019
- 2019-12-03 CN CN201922182393.3U patent/CN211144850U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022183430A1 (en) * | 2021-03-04 | 2022-09-09 | 贵州省交通规划勘察设计研究院股份有限公司 | Mechanical ventilation pipe capable of adjusting direction of pipe opening, and use method thereof |
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