CN108591085B - High temperature resistant fire control smoke exhaust fan - Google Patents
High temperature resistant fire control smoke exhaust fan Download PDFInfo
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- CN108591085B CN108591085B CN201810392050.7A CN201810392050A CN108591085B CN 108591085 B CN108591085 B CN 108591085B CN 201810392050 A CN201810392050 A CN 201810392050A CN 108591085 B CN108591085 B CN 108591085B
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- 239000000779 smoke Substances 0.000 title claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 75
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 13
- 239000003595 mist Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
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- 239000010959 steel Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 4
- 230000009545 invasion Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 238000007599 discharging Methods 0.000 description 7
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a novel high-temperature-resistant fire-fighting smoke exhaust fan, which comprises an outer barrel, an inner barrel, a plurality of flow guide supporting pieces, a through shaft motor, a smoke exhaust fan blade, an exhaust channel, an air inlet channel, an exhaust guide ring, a reversing transmission mechanism and an air cooling mechanism, wherein the inner barrel is coaxially arranged in the outer barrel and is in a closed shape, the flow guide supporting pieces are used for fixing the inner barrel, the through shaft motor is coaxially arranged in the inner barrel, the smoke exhaust fan blade is connected with a rotating shaft of the through shaft motor, the exhaust channel and the air inlet channel are communicated with the inner space of the inner barrel and the outer space of the outer barrel, the air exhaust guide ring is arranged at the front end of the. The invention improves the temperature of the motor running environment by the closed design of the inner cylinder, avoids the invasion of high-temperature smoke, simultaneously arranges a ventilation channel communicated with outside fresh air and an air cooling mechanism synchronously driven by the motor of the fan, realizes the independent circulation of the heat dissipation in the inner cylinder, replaces the traditional water cooling mode with the air cooling mode, and improves the stability of the motor running from multiple aspects.
Description
Technical Field
The invention relates to the field of fire control and smoke exhaust, in particular to a high-temperature-resistant fire control and smoke exhaust fan.
Background
With the development of the construction industry, the fire protection problem of buildings becomes increasingly important. Modern buildings built in recent years need to be provided with a fire-fighting smoke exhaust system to exhaust smoke generated in a building fire in time so as to reduce personal and property losses such as personal burns caused by high-temperature smoke in the fire. The existing fire-fighting and smoke-discharging system of the building mostly adopts devices such as a smoke-discharging fan and a smoke-discharging valve to construct a smoke-discharging system which is suitable for different environments, and underground system engineering such as a tunnel has the characteristics of small space, high ventilation requirement and the like. Therefore, higher requirements are provided for the smoke exhaust fan, and the smoke exhaust fan not only needs to meet the normal operation in a fire fighting state (normal operation at 280 ℃ for 0.5 hour and normal operation at 250 ℃ for 1 hour), but also needs to meet the normal operation of ordinary-time ventilation.
The current fire protection smoke exhaust fan mainly adopts interior urceolus bilayer structure, the urceolus is used for the transport of high temperature flue gas, the inner tube is used for protecting the motor and keeps apart the contact of high temperature flue gas and motor, and mainly carry out the nature heat dissipation to inner tube and motor through louvre or heat dissipation channel that sets up on the inner tube, the air runner that produces the inner tube surface when the impeller operates in the urceolus simultaneously can take away the heat, realize initiative heat dissipation, in order to ensure that the fan can normal heat dissipation operation, and can normally operate a period under the high temperature of fire control state. But if it is hydrocarbon fire that takes place in long tunnel, because the conflagration duration is long, the flue gas detention time of gathering in the tunnel is long, even high temperature flue gas also can not in time distribute under fire control smoke exhaust fan's effect for the heat that its inner tube motor itself produced also can not in time distribute, inside the flue gas also can get into the inner tube by the louvre, influence the stability of fire control smoke exhaust fan long-time running very easily on the whole. In contrast, the applicant has made some improvements to the fire and smoke exhaust fan, for example, in chinese patent No. 201420082552.7 entitled "self-cooling type and spray type high temperature fire and smoke exhaust fan", the water cooling method is adopted to protect the inner cylinder, so as to improve the heat dissipation performance of the inner cylinder and the motor, prevent the smoke from entering the inner cylinder, spray the water mist after absorbing heat, assist in dust fall and fire extinguishing, and achieve a certain effect in practical application. The applicant finds that a plurality of smoke exhaust fans can operate well in the early period when the smoke exhaust fans are researched, but some smoke exhaust fans always have faults when encountering sudden fire-fighting accidents or after operating for a long time, and the ideal expected fire-fighting smoke exhaust effect and the requirement on long-term stable operation life cannot be achieved. The reason is that the performance of the fire-fighting smoke exhaust fan can be improved from the angle of heat dissipation and temperature reduction by the water-cooling structure of the inner cylinder, but the requirement on the tightness of the water channel pipelines of the whole inner cylinder and the motor is high, fire-fighting cooling water must not leak under the condition of ensuring normal circulation, the practical situation is that slight jitter is generated when the motor runs for a long time, the running power is improved in the fire-fighting state, the generated running jitter is increased, the inevitable running jitter easily causes the connection looseness of the water channel pipelines and the shell at each position, so that the problem of cooling water leakage occurs, and the water-cooling mode needs to contain more water, and the leaked cooling water is easily and directly leaked into the inner cylinder and the motor to influence the normal running of the motor.
Therefore, the main problems that the applicant needs to solve at present are to improve the long-time working stability of the fire-fighting smoke exhaust fan system and the sustainable working performance under the high temperature of the fire-fighting state and to reduce the maintenance difficulty of the fan so as to deal with the fire problem of long duration in the underground system engineering, especially in the tunnel.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the novel high-temperature-resistant fire-fighting smoke exhaust fan based on fresh air heat dissipation, which is ingenious in design, good in heat dissipation, stable in work and convenient to maintain.
In order to achieve the purpose, the technical scheme is as follows:
a novel high-temperature-resistant fire-fighting smoke-discharging fan comprises an outer barrel for discharging smoke, an inner barrel which is coaxially arranged in the outer barrel and is in a closed shape, a plurality of diversion support pieces which are connected between the outer barrel and the inner barrel and fix the inner barrel, a through shaft motor which is coaxially arranged in the inner barrel and keeps a certain heat dissipation gap with the inner wall of the inner barrel, smoke-discharging fan blades which are arranged in the outer barrel and are positioned at the front end of the inner barrel and connected with a rotating shaft of the through shaft motor, an exhaust passage which is arranged in the front part of the diversion support pieces and communicated with the inner space of the inner barrel and the outer space of the outer barrel, a conical exhaust guide ring which is arranged at the front end of the inner wall of the inner barrel and has a conical surface obliquely facing the exhaust passage, an air inlet passage which is arranged in the rear part of the diversion support pieces and communicated with the inner space of the inner barrel, the air cooling mechanism is arranged in the inner cylinder and driven by the reversing transmission mechanism, the water spraying channel penetrates through the rotating shaft in the axial direction, the impact type water mist spray head is connected to the front end of the rotating shaft, and the water supply pipeline is connected to the rear end of the rotating shaft through a rotary sealing bearing, wherein the air inlet of the air cooling mechanism is communicated with the air inlet channel, the air outlet of the air cooling mechanism faces the front end of the inner cylinder from the rear end of the through shaft motor, the number of the air cooling mechanisms is 2, the air cooling mechanisms are respectively positioned on opposite sides of the inner wall of the inner cylinder, and the cooling air blown out of the air cooling mechanisms.
Specifically, the air cooling mechanism comprises a hollow casing in a flat cylinder shape, a casing seat arranged outside the hollow casing and connected with the inner cylinder, an air outlet in a rectangular horn shape formed in the side face of the flat cylinder of the hollow casing along the tangential direction, an air inlet arranged at one axial end of the hollow casing and butted with the air inlet channel, a crankshaft arranged at the axial center of the hollow casing and butted with the reversing transmission mechanism, and an impeller arranged on the crankshaft in the hollow casing.
Furthermore, the walls of the inner cylinder and the outer cylinder are both configured into a closed double-layer structure, and flame-retardant heat-insulation materials with low heat conductivity or air are filled between layers.
Further, the outer surface of the inner barrel, the inner and outer surfaces of the outer barrel and the surface of the flow guide support piece are coated with steel structure fireproof paint or high temperature resistant coating.
The invention further provides two reversing transmission mechanisms, wherein one reversing transmission mechanism comprises a worm rod part arranged on the rotating shaft, a transmission support arranged at the rear part in the inner cylinder, a transversely arranged transmission main shaft which is in a staggered vertical relation with the rotating shaft and is connected with the transmission support through a bearing, and a worm wheel which is arranged on the transmission main shaft and is meshed with the worm, wherein the transmission main shaft is connected with the air cooling mechanism to transmit driving force for the transmission main shaft.
And the reversing transmission mechanism comprises a first bevel gear arranged on the rotating shaft, a transmission support arranged at the rear part in the inner cylinder, a transmission main shaft which is in a staggered vertical relation with the rotating shaft and is connected with the transmission support through a bearing and is transversely arranged, and a second bevel gear which is arranged on the transmission main shaft and is meshed and matched with the first bevel gear, wherein the transmission main shaft is connected with the air cooling mechanism and transmits driving force for the air cooling mechanism.
Furthermore, the exhaust guide ring is provided with an air guide gathering concave part corresponding to the exhaust channel in position, and the edge of the air guide gathering concave part is in smooth transition with the surface of the exhaust guide ring so as to improve the smoothness of exhaust.
Furthermore, the air inlet channel and the air outlet channel are internally provided with a separation net to prevent external slag from falling into the inner cylinder.
Furthermore, the diversion support piece is in a shape with a small front part and a big back part so as to improve the emission diversion effect of the flue gas in the outer barrel. The flow guide support is generally configured in a circumferentially uniform manner, so that the inner cylinder is stably fixed in the outer cylinder. The shape of the diversion support can be arranged in various forms, such as a sheet form, namely, the diversion support extends from the front part of the inner cylinder to the rear part of the inner cylinder, and a rod form, namely, at least one group of rods which are uniformly distributed in the circumference are respectively arranged at the front part and the rear part of the inner cylinder, and the exhaust channel and the air inlet channel are opened in the rods at corresponding positions.
Furthermore, the rotating shaft is also provided with a separation disc, the separation disc is positioned between the front end of the inner cylinder and the smoke exhaust impeller or/and between the rear end of the rotating shaft and the air cooling mechanism, and the separation disc is used for preventing water which possibly leaks from the front end or the rear end of the rotating shaft from gradually seeping into the shaft-through motor along the rotating shaft so as to ensure that the motor can operate without being affected under the condition of water leakage.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention improves the heat dissipation mode of the existing fire-fighting smoke exhaust fan, avoids high-temperature smoke from invading the inner cylinder from the outer cylinder to improve the temperature of the running environment of the motor by the closed design of the inner cylinder, simultaneously arranges a ventilation channel communicated with outside fresh air and an air cooling mechanism synchronously driven by the motor of the fan in the inner cylinder to realize the independent circulation of the heat dissipation in the inner cylinder, and replaces the early designed water cooling mode by the air cooling mode of the inner cylinder to reduce the risk of cooling water leakage, thereby improving the running stability of the fan motor from multiple aspects, and combines the effect of spraying water mist by an impact type water mist nozzle to ensure that the smoke exhaust fan can continuously and stably work for more than 1h in the high-temperature environment of more than 350 ℃.
(2) The invention skillfully integrates the channel for ventilating the inside of the inner cylinder into the flow guide support piece, thereby not only ensuring the stable connection and fixation of the inner cylinder, but also skillfully realizing the effective air circulation between the space in the inner cylinder and the external fresh air, leading the introduced fresh air not to be influenced by the high-temperature smoke in the outer cylinder, and effectively improving the heat dissipation effect of the inside of the inner cylinder, particularly under the fire fighting state.
(3) The two air cooling mechanisms are arranged at the rear part of the motor, so that the sucked cooling fresh air can completely cover the motor from back to front, the heat emitted by the motor during operation can be timely taken away, the heat dissipation performance of the motor is greatly improved, and meanwhile, the air cooling mechanisms are synchronously driven by the motor through the reversing transmission mechanism, so that the use efficiency of the motor is improved, the additional energy source configuration for the air cooling mechanisms is not needed, the structure of a built-in part of the inner cylinder is simplified, and the design of the size of the inner cylinder is facilitated.
(4) The air cooling mechanism adopts the form of axial air inlet and radial air outlet, and is more matched with an air inlet channel arranged at the position of the inner cylinder wall and the air flowing direction in the inner cylinder, so that the whole air cooling circulation is more efficient.
(5) The conical exhaust guide ring is arranged near the inlet of the exhaust channel at the front end of the inner cylinder, and guides airflow flowing from the rear part of the motor to the front part, so that the airflow can more easily enter the exhaust channel and is convenient to discharge heat dissipation airflow.
(6) The inner cylinder and the outer cylinder are both configured into a double-layer structure, so that the heat insulation performance of the inner cylinder and the outer cylinder, particularly the inner cylinder, is improved, the transmission and invasion of the temperature of high-temperature smoke in the outer cylinder to the inner part of the inner cylinder are effectively reduced, the temperature of the operation space of the motor is reduced by improving the heat insulation performance of the inner cylinder, the heat dissipation difficulty is reduced, the service life of the motor in operation can be effectively prolonged by matching the action of a cooling system, particularly, the stable operation time of the motor in a fire fighting state is prolonged, and meanwhile, a fireproof material or a high-temperature-resistant coating is coated on the surface of the inner cylinder and the outer cylinder, so that the continuity of the structure.
(7) The reversing transmission mechanism mainly adopts a worm and gear transmission form or a bevel gear transmission form, and can also adopt other reversing transmission structures, so that the matching of the rotation direction of the motor and the rotation direction of the air cooling mechanism is skillfully realized, the structure of the transmission mechanism is simple and stable, the air cooling mechanism can be ensured to be stably driven by the motor of the fan, and the long-time stable operation of a heat dissipation system is ensured.
(8) The invention also skillfully arranges the isolation disc on the rotating shaft to effectively isolate the liquid possibly leaked from the end part of the rotating shaft, thereby avoiding the liquid from entering the motor along the shaft and fully ensuring that the running state of the motor is not influenced by the leaked liquid.
Drawings
Fig. 1 is a side sectional structural schematic view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention in an internal top view.
Fig. 3 is a schematic end structure diagram (the smoke exhaust fan blade is not shown) of the present invention.
Fig. 4 is a schematic structural view of an air cooling mechanism according to the present invention.
Fig. 5 is a schematic structural diagram of the reversing transmission mechanism in the form of worm and gear transmission.
Fig. 6 is a schematic structural diagram of the reversing transmission mechanism adopting a bevel gear transmission form in the invention.
FIG. 7 is a schematic view of the exhaust guide ring according to the present invention.
Fig. 8 is a schematic structural view of another arrangement of the fluid-guiding support member according to the present invention.
FIG. 9 is a schematic structural view of an air inlet channel with an annular air guide groove (inner barrel component is not shown) in the invention.
Fig. 10 is a sectional view taken in the direction a-a in fig. 9 (inner cylinder inner member not shown).
Wherein, the names corresponding to the reference numbers are:
1-outer cylinder, 2-inner cylinder, 3-flow guide support, 4-through shaft motor, 5-smoke exhaust fan blade, 6-rotating shaft, 7-exhaust channel, 8-air inlet channel, 9-exhaust guide ring, 10-fresh air inlet pipe, 11-impact type water mist spray head, 12-water supply pipeline, 13-separation net, 14-air guide convergence concave part, 15-separation disc, 16-transition channel and 17-rod;
20-an air cooling mechanism, 21-a hollow shell, 22-a shell seat, 23-an air outlet, 24-an air inlet, 25-a crankshaft and 26-an impeller; 30-reversing transmission mechanism, 31-worm part, 32-worm wheel, 33-transmission bracket, 34-transmission main shaft, 35-first bevel gear and 36-second bevel gear.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include, but are not limited to, the following examples.
As shown in figures 1-10, the novel high temperature resistant fire-fighting smoke exhaust fan comprises an outer cylinder 1 for exhausting smoke, a closed inner cylinder 2 coaxially arranged in the outer cylinder, a plurality of diversion support members 3 connected between the outer cylinder and the inner cylinder and fixing the inner cylinder, a through shaft motor 4 coaxially arranged in the inner cylinder and keeping a certain heat dissipation gap with the inner wall of the inner cylinder, smoke exhaust fan blades 5 arranged in the outer cylinder and positioned at the front end of the inner cylinder and connected with a rotating shaft 6 of the through shaft motor extending out of the inner cylinder, an exhaust passage 7 arranged in the front part of the diversion support members and communicated with the inner space of the inner cylinder and the outer space of the outer cylinder, a conical exhaust guide ring 9 arranged at the front end of the inner wall of the inner cylinder and with the conical surface facing the exhaust passage, an air inlet passage 8 arranged in the rear part of the diversion support members and communicated with the inner space of the inner cylinder and, the device comprises a reversing transmission mechanism 30, an air cooling mechanism 20, a water spraying channel, an impact type water mist spray head 11 and a water supply pipeline 12, wherein the reversing transmission mechanism 30 is arranged in the inner cylinder and connected with a rotating shaft at the rear end of a through shaft motor, the air cooling mechanism 20 is arranged in the inner cylinder and driven by the reversing transmission mechanism, the water spraying channel penetrates through the rotating shaft in the axial direction, the impact type water mist spray head 11 is connected to the front end of the rotating shaft, the rear end of the rotating shaft is connected with the water supply pipeline 12 through a rotary sealing bearing, an air inlet of the air cooling mechanism is communicated with the air inlet channel, an air outlet of the air cooling mechanism faces the front end of the inner cylinder from the rear end of the through shaft. Correspondingly, openings respectively matched with the exhaust channel and the air inlet channel are formed in the inner cylinder wall and the outer cylinder wall in a penetrating mode, the outer cylinder is provided with a fresh air inlet pipe, corresponding air circulation pipelines can be configured according to actual requirements, air used for air cooling circulation in the inner cylinder and air in the space where the outer cylinder is located are isolated as far as possible, and the heat dissipation reliability of the air cooling circulation in the inner cylinder can be guaranteed as far as possible in a fire fighting state. Impact type water smoke shower nozzle adopts the structure among the prior art, utilizes the structure of shower nozzle itself to atomize rivers under water spray pressure, and the air current that atomizing steam accessible fan blade rotated the production disperses to whole urceolus in, cools down to the urceolus with the outer space between and of inner tube, can also play the effect of subsiding the smog dust and reducing the mars stream and scurring under the fire control state simultaneously. The water supply pipeline can be directly externally connected with a water supply pipeline, water pressure is applied to the spray head by utilizing the self pressure of a water supply source such as the pressure of a municipal pipe network, water mist spraying is realized, the water supply pipeline not only ensures the sealing connection between the rotating shaft and the water supply pipeline through the rotary sealing bearing, but also can adopt flexible pipeline connection at partial sections (particularly bending parts) of the water supply pipeline, thereby further reducing the leakage condition of the water supply pipeline part caused by the operation of the motor, and the water supply pipeline can be arranged along the direction of the flow guide support piece when passing through the inner cylinder and the outer cylinder; in a further improvement, a controllable valve component, such as an electromagnetic valve or a manual valve, can be arranged on the water supply pipeline to control the opening and closing or opening and closing degree of the water supply pipeline, so as to control the opening and closing and the water spraying amount of the impact type water mist spray head, so as to adapt to different environmental states, and can be matched with sensing devices such as a temperature sensor and a smoke sensor to sense the environmental conditions around the outer cylinder, and the valve component is automatically adjusted and controlled by an additionally configured controller.
Specifically, the air cooling mechanism 20 includes a hollow casing 21 in a flat cylindrical shape, a casing seat 22 disposed outside the hollow casing and connected to the inner cylinder, an air outlet 23 in a rectangular horn shape formed in a tangential direction on a side surface of the flat cylindrical shape of the hollow casing, an air inlet 24 disposed at one axial end of the hollow casing and butted with the air inlet channel, a crankshaft 25 disposed at an axial center position of the hollow casing and butted with the reversing transmission mechanism, and an impeller 26 disposed on the crankshaft in the hollow casing. The air cooling mechanism sucks air from the axial direction under the action of the impeller and the casing, continuously replenishes fresh air from the outside through the air inlet channel, then blows air out from the circumferential direction and blows the air to the through-shaft motor, heat emitted during running of the through-shaft motor is taken away by blowing air and is discharged outwards from the exhaust channel at the front part of the inner cylinder, and air cooling circulation inside the inner cylinder is realized. Meanwhile, a crankshaft of the air cooling mechanism takes power from a rotating shaft of the through-shaft motor through the reversing transmission mechanism, so that synchronous operation of the air cooling mechanism and the through-shaft motor can be guaranteed, and good heat dissipation of the motor in the inner cylinder is further guaranteed.
For the reversing transmission mechanism 30, the invention provides two forms, and a shell can be configured to cover the inner structure of the reversing transmission mechanism, so that the transmission stability is ensured:
one of the two reversing transmission mechanisms is in a worm gear and worm transmission mode, namely, the reversing transmission mechanism comprises a worm rod part 31 arranged on the rotating shaft, a transmission support 33 arranged at the rear part in the inner cylinder, a transmission main shaft 34 which is in a staggered vertical relation with the rotating shaft and is connected with the transmission support through a bearing and is transversely arranged, and a worm gear 32 which is arranged on the transmission main shaft and is meshed with the worm, wherein shafts of the two air cooling mechanisms are respectively connected to two ends of the transmission main shaft.
The second is a bevel gear transmission form, that is, the reversing transmission mechanism comprises a first bevel gear 35 arranged on the rotating shaft, a transmission bracket 33 arranged at the rear part in the inner cylinder, a transmission main shaft 34 which is in a staggered vertical relation with the rotating shaft and is connected with the transmission bracket through a bearing and is transversely arranged, and a second bevel gear 36 which is arranged on the transmission main shaft and is meshed with the first bevel gear, wherein shafts of the two air cooling mechanisms are respectively connected with two ends of the transmission main shaft.
Meanwhile, in order to improve the fireproof and heat insulation effect of the mechanism, the walls of the inner cylinder and the outer cylinder are both configured into a closed double-layer structure, and flame-retardant heat insulation materials with low heat conductivity coefficients or air are filled between layers; and steel structure fireproof paint or high temperature resistant coating is coated on the outer surface of the inner barrel, the inner and outer surfaces of the outer barrel and the surface of the flow guide support piece. On the one hand, the heat resistance of the mechanism component under the high temperature in the fire fighting state is improved, the influence of high-temperature smoke on the structural performance of the component is avoided, on the other hand, the high-temperature smoke is completely isolated from the space outside the outer barrel and in the inner barrel, especially, the interference on components such as a motor caused by the high-temperature smoke invading the inner barrel is avoided, and the normal operation stability of the motor is improved. The isolation mode is matched with an air cooling system which independently circulates in the inner cylinder, so that the service life of the motor is effectively prolonged, the running duration of the motor in a single fire fighting state is longer, and the motor can continuously and stably work for more than 1 hour at the high temperature of 350 ℃ compared with the existing smoke exhaust fan which needs to normally work for 0.5 hour at the temperature of 280 ℃ and 1 hour at the temperature of 250 ℃ in a fire fighting state through estimation.
The flow guide support members may be configured in various forms, which are small in front and large in back as a whole to facilitate flow guide discharge of flue gas or air, and are generally configured in a circumferentially uniform manner with the inner cylinder as a center to improve connection stability of the inner cylinder, and the number of the flow guide support members is preferably 3 to 8, and considering a corresponding position relationship between the air cooling mechanism and the air inlet passage, the number of the flow guide support members is more preferably an even number, such as 4 or 6. When the flow guide supporting pieces are arranged into a sheet form, the flow guide supporting pieces extend from the front part of the inner cylinder to the rear part of the inner cylinder along the axial direction, smoke can be better guided, the exhaust channel is arranged in the front part of each flow guide supporting piece, the air inlet channel is preferably directly opposite to the air inlet of the air cooling mechanism, so the air inlet channel is generally only arranged in the rear parts of two flow guide supporting pieces which are horizontally and transversely arranged, the air inlet channel and the air inlet can be directly butted, slag falling is avoided, the sealing performance of the inner cylinder is ensured, the air inlet channels are not required to be arranged at the rear parts of other flow guide supporting pieces, and meanwhile, the air inlet total amount of all the air inlet channels is matched with the exhaust; when the flow guide support is in the form of a rod, at least one set of rods 17 are arranged in the front and the rear of the inner cylinder, the rods are distributed uniformly around the inner cylinder, the number and the axial position of the rods in each set are matched, so that partial material can be saved to a certain extent, the air inlet channel and the air outlet channel are arranged in the rods at corresponding positions, the rods are in the form of hollow rods or tubes, the air inlet channel is generally only arranged in the rods at the rear of the inner cylinder, which are horizontally and transversely arranged, corresponding to the sheet-shaped form, and the rod-shaped front small and rear large forms can be formed by arranging angle irons on the surfaces of the rods. In a further improvement, in order to facilitate matching of the diversion support members with different numbers of arrangement and the built-in air inlet channels thereof with the air inlets of the air cooling mechanism, an annular transition channel 16 can be arranged on the inner cylinder corresponding to the air inlet channels, is communicated with all the air inlet channels, and is opened at the position corresponding to the air inlets of the air cooling mechanism and communicated with the air inlet channels, so that the problem that which diversion support member is provided with the air inlet channels is not limited, and the diversion support members can be more selected in the preferable number to be more matched with the actual application condition.
Furthermore, the air inlet channel and the air outlet channel are internally provided with a separation net 13 so as to prevent external slag from falling into the inner cylinder by mistake.
And in order to improve the air exhaust smoothness, the air guide gathering concave part 14 corresponding to the air exhaust channel is arranged on the air exhaust guide ring, and the edge of the air guide gathering concave part is in smooth transition with the surface of the air exhaust guide ring. The air cooling mechanism blows cooling air forwards from the rear part of the motor to take away heat emitted from the motor, the air reaching the front end inside the inner barrel is guided by the inclined surface of the exhaust guide ring to enable the air direction to face more towards the side part of the inner barrel, and the air is easier to enter the exhaust pipeline by combining the further inclined guiding action of the air guide convergence concave part, so that the condition that the air is directly blown to the front end inside the inner barrel to cause turbulence and is inconvenient to discharge is avoided. The invention accelerates the flow exchange efficiency of the cooling wind in the inner cylinder by improving the exhaust efficiency, so that more cooling wind can enter the inner cylinder in time, thereby further improving the cooling effect of the space in the inner cylinder and the motor.
Furthermore, considering that no matter how perfect the design in the structural design is in practical application, certain unexpected situations of inconvenient use may occur due to various conditions, in order to avoid that accidental leakage or small amount of leakage of a pipeline of a water path part affects normal operation of the motor as much as possible, the invention also arranges the separation discs 15 on the rotating shaft, usually one separation disc is arranged between the front end of the inner cylinder and the smoke exhaust impeller and between the rear end of the rotating shaft and the air cooling mechanism respectively, which can be simply understood as that the separation discs are arranged at the front end and the rear end of the rotating shaft respectively and used for preventing water which may leak from the front end or the rear end of the rotating shaft from gradually seeping into the through shaft motor along the rotating shaft, so as to ensure that the motor can operate without being affected under the condition of water leakage. On one hand, when the impact type spray head at the front end of the rotating shaft sprays water mist, a small part of water vapor possibly remains on the spray head and seeps along the shaft, the separation disc at the front end can prevent the part of water from further seeping into the motor to be retained along the disc surface, and the water can be thrown away under the rotating action of the separation disc.
In addition, in order to ensure the normal operation of the whole fan, certain circuit components, such as wires and cables, circuit boards, junction boxes, sensors, etc., are usually configured, and these components are all in the prior art, and can be set as required by a person skilled in the art according to the content explanation of the present invention, and the detailed description of the present invention is omitted.
Through the arrangement, the novel high-temperature-resistant fire-fighting smoke exhaust fan disclosed by the invention can be used for well improving the operation stability, has a good heat dissipation effect, and is particularly suitable for being applied to underground system engineering, particularly tunnels.
The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention, but all the modifications made by the principles of the present invention and the non-inventive efforts based on the above-mentioned embodiments shall fall within the scope of the present invention.
Claims (10)
1. A high-temperature-resistant fire-fighting smoke exhaust fan is characterized by comprising an outer barrel (1) for exhausting smoke, a closed inner barrel (2) coaxially arranged in the outer barrel, a plurality of flow guide supporting pieces (3) connected between the outer barrel and the inner barrel and fixing the inner barrel, a through shaft motor (4) coaxially arranged in the inner barrel and keeping a certain heat dissipation gap with the inner wall of the inner barrel, smoke exhaust fan blades (5) arranged in the outer barrel and positioned at the front end of the inner barrel and connected with a rotating shaft (6) of the through shaft motor extending out of the inner barrel, an exhaust passage (7) arranged in the front of the flow guide supporting pieces and communicated with an inner space of the inner barrel and an outer space of the outer barrel, a conical exhaust guide ring (9) arranged at the front end of the inner wall of the inner barrel and provided with a conical surface obliquely facing the exhaust passage, and an air inlet, the novel air cooling device comprises a fresh air inlet pipe (10) which is arranged outside an outer cylinder and communicated with an air inlet channel, a reversing transmission mechanism (30) which is arranged in the inner cylinder and connected with a rotating shaft at the rear end of a through shaft motor, an air cooling mechanism (20) which is arranged in the inner cylinder and driven by the reversing transmission mechanism, a water spraying channel which penetrates through the inner cylinder along the axial direction of the rotating shaft, an impact type water mist spray head (11) which is connected with the front end of the rotating shaft, and a water supply pipeline (12) which is connected with the rear end of the rotating shaft through a rotary sealing bearing, wherein an air inlet (24) of the air cooling mechanism is communicated with the air inlet channel, an air outlet (23) of the air cooling mechanism faces the front end of the inner cylinder from the rear end of the through shaft motor, the number of the.
2. The high temperature resistant fire-fighting smoke exhaust fan as recited in claim 1, wherein the air cooling mechanism (20) comprises a hollow casing (21) in the shape of a flat cylinder, a casing base (22) disposed outside the hollow casing and connected to the inner cylinder, an air outlet (23) in the shape of a rectangular horn formed in the side of the flat cylinder of the hollow casing in the tangential direction, an air inlet (24) disposed at one axial end of the hollow casing and butted with the air inlet passage (8), a crankshaft (25) disposed at the axial center of the hollow casing and butted with the reversing gear (30), and an impeller (26) disposed on the crankshaft in the hollow casing.
3. The high temperature resistant fire protection smoke exhaust fan according to claim 1, wherein the walls of the inner cylinder and the outer cylinder are configured as a closed double-layer structure, and flame retardant heat insulation materials with low thermal conductivity or air are filled between the layers.
4. The high temperature resistant fire-fighting smoke exhaust fan as claimed in claim 1, wherein the outer surface of the inner cylinder (2), the inner and outer surfaces of the outer cylinder (1) and the surface of the flow guide support member (3) are coated with steel structure fire-proof paint or high temperature resistant coating.
5. The high-temperature-resistant fire-fighting smoke exhaust fan as claimed in any one of claims 1 to 4, wherein the reversing transmission mechanism (30) comprises a worm rod part (31) arranged on the rotating shaft (6), a transmission bracket (33) arranged at the rear part in the inner cylinder (2), a transmission main shaft (34) which is arranged transversely and is in a staggered vertical relation with the rotating shaft and connected with the transmission bracket through a bearing, and a worm wheel (32) which is arranged on the transmission main shaft and meshed with the worm, wherein the transmission main shaft is connected with the air cooling mechanism (20) and transmits driving force for the air cooling mechanism.
6. The high-temperature-resistant fire-fighting smoke exhaust fan as claimed in any one of claims 1 to 4, wherein the reversing transmission mechanism (30) comprises a first bevel gear (35) arranged on the rotating shaft (6), a transmission bracket (33) arranged at a rear position in the inner cylinder, a transmission main shaft (34) which is arranged transversely and vertically in a staggered manner with respect to the rotating shaft and is connected with the transmission bracket through a bearing, and a second bevel gear (26) which is arranged on the transmission main shaft and is meshed with the first bevel gear, wherein the transmission main shaft is connected with the air cooling mechanism and transmits driving force for the air cooling mechanism.
7. The high-temperature-resistant fire-fighting smoke exhaust fan as recited in claim 6, wherein the exhaust guide ring (9) is provided with an air guide converging concave part (14) corresponding to the exhaust channel, and the edge of the air guide converging concave part is smoothly transited with the surface of the exhaust guide ring.
8. The high temperature resistant fire-fighting smoke exhaust fan according to claim 6, wherein a separation net (13) is arranged in each of the air inlet channel and the exhaust channel.
9. The high temperature resistant fire protection smoke exhaust fan of claim 6, wherein the flow guide support is small in front and large in back.
10. The high temperature resistant fire-fighting smoke exhaust fan according to claim 6, wherein a separation disc (15) is further arranged on the rotating shaft, and the separation disc is positioned between the front end of the inner cylinder and the smoke exhaust impeller or/and between the rear end of the rotating shaft and the air cooling mechanism.
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| CN110319041B (en) * | 2019-07-12 | 2020-11-17 | 绍兴市上虞金泰风机有限公司 | Air circulation cooling's high temperature fan |
| CN110630564A (en) * | 2019-10-08 | 2019-12-31 | 河南宏伟电气股份有限公司 | Fire control fan electrical control device |
| CN115910689B (en) * | 2023-01-18 | 2023-05-23 | 国网山西省电力公司吕梁供电公司 | Relay protection device for improving power supply reliability of power distribution network |
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| DE102015213006A1 (en) * | 2015-07-10 | 2017-01-12 | Mahle International Gmbh | blower assembly |
| DE102016205690A1 (en) * | 2016-04-06 | 2017-10-12 | Mahle International Gmbh | blower assembly |
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| CN2105580U (en) * | 1991-07-06 | 1992-05-27 | 上海交通大学 | High-temp. axial-flow fan |
| CN103899549A (en) * | 2012-12-26 | 2014-07-02 | 何良智 | Centrifugal type center injection scattering water mist fan |
| CN203399587U (en) * | 2013-08-07 | 2014-01-22 | 李小敏 | Efficient cooling noise-reducing axial flow fan |
| CN104948479A (en) * | 2015-06-02 | 2015-09-30 | 云南红光昭宇科技有限公司 | Intelligent type high temperature fire protection smoke exhaust fan |
| CN206830483U (en) * | 2017-05-31 | 2018-01-02 | 浙江志江风机有限公司 | A kind of smoke exhaust fan of service life length |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015213006A1 (en) * | 2015-07-10 | 2017-01-12 | Mahle International Gmbh | blower assembly |
| DE102016205690A1 (en) * | 2016-04-06 | 2017-10-12 | Mahle International Gmbh | blower assembly |
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Effective date of registration: 20221228 Address after: 610000 Standard Factory of High tech Development Zone, Yongfeng Road, Chengdu, Sichuan Patentee after: Sichuan Tianfu Fire Engineering Co.,Ltd. Address before: 610000 Jinke South Road, Jinniu District, Chengdu, Sichuan 69 Patentee before: SICHUAN FIRE Research Institute OF MINISTRY OF PUBLIC SECURITY |