CN101634308A - Draught fan of cooling tower - Google Patents
Draught fan of cooling tower Download PDFInfo
- Publication number
- CN101634308A CN101634308A CN200910305441A CN200910305441A CN101634308A CN 101634308 A CN101634308 A CN 101634308A CN 200910305441 A CN200910305441 A CN 200910305441A CN 200910305441 A CN200910305441 A CN 200910305441A CN 101634308 A CN101634308 A CN 101634308A
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- runner
- outlet
- cooling tower
- water inlet
- blower fan
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Abstract
The invention relates to a draught fan of a cooling tower, comprising a flow passage shell and a speed reducer, wherein the end head of an input shaft of the speed reducer extending into the flow passage shell is provided with an impeller, and shaft lines of the input shaft and an output shaft of the speed reducer are coincided; a fluid outlet of the flow passage shell is provided with an outlet in a circular pipe shape; and the impeller arranged on the input shaft is positioned in the outlet in the circular pipe shape. The input shaft of the speed reducer, which is provided with the impeller, and the output shaft of the speed reducer, which is provided with fan blades, are arranged on a same shaft line, thereby the invention realizes that the rotating speed of the impeller is matched with the rotating speed of a fan and is also convenient to install the draught fan of the cooling tower.
Description
Technical field
The present invention relates to a kind of blower fan of cooling tower.
Background technique
At present, most of blower fan of cooling tower all is with motor-driven, and on the one hand, motor expends a large amount of electric energy, on the other hand, has wasted a large amount of energy owing to provide the recycle pump of power to have about 30% lift more than needed for recirculated cooling water in the cooling tower.In order to utilize the lift more than needed of recycle pump, application number is that 200810033030.9 Chinese patent specification discloses a kind of hydro-power cooling draught fan for high-efficiency and energy-saving type cooling tower, this invention is a scroll casing shape with water inlet flow channel, the cross section of water inlet flow channel is less gradually ellipticity of area or trapezoid shaped structure, has reduced the size of water turbine.The inboard of scroll casing shape water inlet flow channel is provided with ring seat, be pressed with pressing plate on the ring seat and on the inner ring of scroll casing shape water inlet flow channel, runner is arranged in the ring seat, there is the mouth of a river to communicate between ring seat and the water inlet flow channel, be provided with annular stator in the ring seat, the tail end of annular stator is provided with cuts the water outlet of striking waters of cutting that hits runner bucket.Annular stator technical ability plays guide functions, can bear thrust load again.The bottom of runner is provided with to collect cuts the straight-tapered tail pipe that hits falling water flow behind the runner.The runner shaft of this invention is passed to fan shaft by the one-level reduction gearing with power, the different axis with fan shaft of runner shaft.The application of reducing gear both improved the rotating speed of water turbine guaranteed fan do not exceed the speed limit, thereby improved efficient.But the circulating water of this invention is promptly cut behind the stator water conservancy diversion from water inlet flow channel and is hit runner bucket acting, hydraulic losses very greatly, the order of current is also destroyed, the circulating water pressure that enters draft tube after the acting is very low, causes the water distribution underpressure.In addition, the different axis with fan shaft of runner shaft can cause blower fan that difficulty is installed.
Summary of the invention
In order to overcome runner shaft and the next difficult problem of blower fan installation of fan shaft disalignment tape in the prior art, the invention provides a kind of blower fan of cooling tower.
For addressing the above problem, the present invention adopts following technological scheme: a kind of blower fan of cooling tower, comprise runner housing and retarder, described reducer input shaft stretches on the interior termination of runner housing impeller is installed, the dead in line of reducer input shaft and output shaft, the fluid outlet of described runner housing is provided with a pipe shape outlet, and the impeller of installing on the input shaft is in this pipe shape outlet.
Described runner housing is the half round runner housing, and the axis of reducer input shaft is positioned at the tangent position of half round runner housing axis.
Described runner housing is a scroll casing shape runner housing, and scroll casing shape runner housing comprises the water inlet flow channel in the outside and the inboard runner of turning back, described water inlet flow channel and turn back and have the mouth of a river to communicate between the runner.
The described mouth of a river by be arranged on water inlet flow channel and the stator that is uniformly distributed along the circumference between the runner of turning back in per two adjacent guide vane form, described stator all tilts to the water inlet direction.
Be provided with fluid director in the described runner of turning back, described fluid director is the frustum with arc guide face, the bottom surface that the diameter of arc guide face and frustum is bigger is tangent, the described fluid director vertex of a cone is fixed on being positioned at of runner housing downwards and turns back on the cover plate on runner top, the fluid director center is provided with porose, and described input shaft of speed reducer is passed from the center hole of fluid director.
The cross section of described water inlet flow channel is the diminishing circle of area or trapezoidal, and the upper wall surface of water inlet flow channel is to centroclinal layout and downward along the helix rotation, and the upper wall surface of water inlet flow channel is wholely set in center and cover plate.
Directly be communicated with the outlet pipe, described outlet pipe and the many siphunculus of pipe shape export mixes that link to each other with water-dispensing device of being used for that are provided with axis and pipe shape outlet axis normal on the termination of the pipe shape of the fluid outlet of described runner housing outlet.
Be provided with the taper water knockout drum in the below of impeller in the pipe shape outlet of the fluid outlet of described runner housing, the baffling direction of the described taper water knockout drum conical surface is relative with the mouth of pipe of the outlet pipe of pipe shape outlet end.
Described taper water knockout drum is circular cone or pyramid.
The reducer input shaft that impeller is installed of the present invention is coaxially set with the reducer output shaft that electric fan is installed, and has made things convenient for the installation of blower fan of cooling tower when having realized mating between wheel speed and the rotation speed of the fan.Further, global symmetry of the present invention is good, and the retarder motion is steady, and noise is little, efficient is high.
Runner housing of the present invention comprises the water inlet flow channel and the inboard runner of turning back in the outside, turn back and be provided with fluid director in the runner, enter drives impeller acting in the pipe shape outlet of runner housing under the guiding from water fluid director in the runner of turning back of water inlet flow channel in order, the force rate that acts on the impeller is more even, wheel speed steadily and also water to be converted into turbomachine transformation of energy rate higher.Further, circulating water has had downward speed when process is turned back runner, and this part energy can not lose when drives impeller is done work, and the cloth water pressure is higher.
The cross section of water inlet flow channel of the present invention is the diminishing circle of area or trapezoidal, the upper wall surface of water inlet flow channel can avoid air to enter water channel downwards to centroclinal layout and along helix rotation, along with the water in the scroll casing shape water inlet flow channel enters the runner of turning back by the connection water inlet flow channel of stator composition and the mouth of a river of the runner of turning back, water in the water channel is fewer and feweri, if the water channel sectional area is constant, to in water channel, form degree of vacuum, air enters easily, not only cause cavitation erosion, also can produce impact water channel.
Directly be communicated with the outlet pipe that links to each other with water-dispensing device of being used for that is provided with axis and pipe shape outlet axis normal on the termination of the pipe shape of the fluid outlet of runner housing of the present invention outlet, saved tail pipe, simplify the structure.
Be provided with the taper water knockout drum in the below of impeller in the pipe shape outlet of the fluid outlet of runner housing of the present invention, the conical surface of taper water knockout drum is relative with the mouth of pipe of the outlet pipe of pipe shape outlet termination, and the water that the taper water knockout drum is justified the pipe-type outlet end in the future by oneself separately makes it steadily enter each outlet pipe.
Description of drawings
Fig. 1 is the sectional view of the plan view of the embodiment of the invention 1;
Fig. 2 is the plan view (removing fan, transmission device and cover plate) of Fig. 1;
Fig. 3 is the plan view (removing fan, transmission device) of Fig. 1;
Fig. 4 is the sectional view of the plan view of the embodiment of the invention 2.
Embodiment
Embodiment 1:
At Fig. 1, Fig. 2, among Fig. 3, scroll casing shape runner housing comprises the water inlet flow channel 3 in the outside, the cross section of water inlet flow channel 3 is that area is diminishing trapezoidal, the upper wall surface of water inlet flow channel 3 is to centroclinal layout and downward along helix rotation, the inboard of water inlet flow channel 3 evenly is provided with stator 16 along the circumference of circle 20, circle 20 is provided with the profile circle off-centre of water inlet flow channel 3, stator 16 surround with water inlet flow channel between have the mouth of a river to communicate the runner of turning back, stator 16 all tilts to the water inlet direction, per two adjacent guide vane 16 are formed a mouth of a river that is communicated with the water inlet flow channel 3 and the runner of turning back, the turn back top of runner is provided with cover plate 15, and cover plate 15 is wholely set with the upper wall surface of water inlet flow channel 3.The runner lower part of frame is provided with the pipe shape outlet that impeller 1 is installed, and the outlet of pipe shape is communicated with the runner of turning back.Turn back and be provided with cone table shape fluid director 17 in the runner with arc guide face, the bottom surface that the arc guide face of stream device 17 and its diameter are bigger is tangent, fluid director 17 is installed on the reducer input shaft 13 that impeller 1 is installed downwards by the hole vertex of a cone that is arranged on its center, fluid director 17 is a Spielpassung with reducer input shaft 13, and the upper bottom surface of fluid director 17 is that the lower surface of bigger bottom surface of its diameter and cover plate 15 is fixed together.
The lower end of pipe shape outlet directly is communicated with the outlet pipe that links to each other with water-dispensing device 2 of being used for that is provided with axis and pipe shape outlet axis normal, and the pipe shape is provided with taper water knockout drum 18 in the below of impeller 1 in exporting.The baffling direction of the conical surface of taper water knockout drum 18 is relative with the mouth of pipe of the outlet pipe of pipe shape outlet end.The rib number of taper water knockout drum 18 is corresponding with the number of water-dispensing device, can select rectangular pyramid, hexagonal pyramid, eight pyramids or circular cone according to the number of water-dispensing device.
Be provided with the bearing 4 that supports leaf reducer input shaft 13 above the cover plate 15, bearing 4 outer rings are fixed on the cover plate 15, the top of bearing 4 is provided with the gear reduction transmission device, and the gear reduction transmission device is arranged in the speed reducer 14, and speed reducer 14 is supported on the cover plate 15 by supporting part 19.The gear reduction transmission device comprises adaptive shaft 6, first driving gear 12, second driving gear 5, the 3rd driving gear 7, the 4th driving gear 11, adaptive shaft 6 by Bearing Installation on speed reducer 14, second driving gear 5 and the 3rd driving gear 7 fixedly mount respectively on the adaptive shaft 6, first driving gear 12 is fixedly mounted on the reducer input shaft 13, the 4th driving gear 11 is fixedly mounted on the reducer output shaft 10, first driving gear 12 and 5 engagements of second driving gear, the 3rd driving gear 7 and 11 engagements of the 4th driving gear, reducer input shaft 13 and reducer output shaft 10 coaxial settings, the upper end of speed reducer 14 is provided with the bearing 8 that supports reducer output shaft 10, bearing 8 outer rings are fixed on the speed reducer 14, and the upper end of reducer output shaft 10 is provided with flabellum 9.
Embodiment 2:
In Fig. 4, the inlet of arc water inlet flow channel 3 is connected with intake pipe 21, the bottom of water inlet flow channel 3 is provided with the pipe shape outlet that impeller 1 is installed, impeller 1 is installed on the termination of reducer input shaft 13, the lower end that the axis of reducer input shaft 13 is positioned at the tangent position pipe shape outlet of half round runner housing axis directly is communicated with the outlet pipe that links to each other with water-dispensing device 2 of being used for that is provided with axis and pipe shape outlet axis normal, and the pipe shape is provided with taper water knockout drum 18 in the below of impeller 1 in exporting.The baffling direction of the conical surface of taper water knockout drum 18 is relative with the mouth of pipe of the outlet pipe of pipe shape outlet end.The rib number of taper water knockout drum 18 is corresponding with the number of water-dispensing device, can select rectangular pyramid, hexagonal pyramid, eight pyramids or circular cone according to the number of water-dispensing device.
Be provided with back shaft 20 above the water inlet flow channel 3, the upper support of back shaft 20 is provided with support device 19, one end of support device 19 is supported on the back shaft 20, the other end is supported on the arc water inlet flow channel 3, support device 19 comprises horizontally disposed dunnage, be provided with vertical dunnage around the horizontal supporting plate, horizontal supporting plate is provided with the bearing 4 that supports reducer input shaft 13, the vertical dunnage of the top of bearing 4 and support device 19 is provided with the gear reduction transmission device, the gear reduction transmission device is arranged in the speed reducer 14, and speed reducer 14 is supported on the cover plate 15 by support device 19.The gear reduction transmission device comprises adaptive shaft 6, first driving gear 12, second driving gear 5, the 3rd driving gear 7, the 4th driving gear 11, adaptive shaft 6 by Bearing Installation on speed reducer 14, second driving gear 5 and the 3rd driving gear 7 fixedly mount respectively on the adaptive shaft 6, first driving gear 12 is fixedly mounted on the reducer input shaft 13, the 4th driving gear 11 is fixedly mounted on the reducer output shaft 10, first driving gear 12 and 5 engagements of second driving gear, the 3rd driving gear 7 and 11 engagements of the 4th driving gear, reducer input shaft 13 and reducer output shaft 10 coaxial settings, the upper end of speed reducer 14 is provided with the bearing 8 that supports reducer output shaft 10, bearing 8 outer rings are fixed on the speed reducer 14, and the upper end of reducer output shaft 10 is provided with flabellum 9.
Claims (9)
1. blower fan of cooling tower, comprise runner housing and retarder, described reducer input shaft stretches on the interior termination of runner housing impeller is installed, it is characterized in that: the dead in line of reducer input shaft and output shaft, the fluid outlet of described runner housing is provided with a pipe shape outlet, and the impeller of installing on the input shaft is in this pipe shape outlet.
2. blower fan of cooling tower according to claim 1 is characterized in that: described runner housing is an arc runner housing, and the axis of reducer input shaft is positioned at the tangent position of half round runner housing axis.
3. blower fan of cooling tower according to claim 1, it is characterized in that: described runner housing is a scroll casing shape runner housing, scroll casing shape runner housing comprises the water inlet flow channel in the outside and the inboard runner of turning back, described water inlet flow channel and turn back and have the mouth of a river to communicate between the runner.
4. blower fan of cooling tower according to claim 3 is characterized in that: the described mouth of a river by be arranged on water inlet flow channel and the stator that is uniformly distributed along the circumference between the runner of turning back in per two adjacent guide vane form, described stator all tilts to the water inlet direction.
5. blower fan of cooling tower according to claim 4, it is characterized in that: be provided with fluid director in the described runner of turning back, described fluid director is the frustum with arc guide face, the bottom surface that the diameter of arc guide face and frustum is bigger is tangent, the described fluid director vertex of a cone is fixed on being positioned at of runner housing downwards and turns back on the cover plate on runner top, the fluid director center is provided with porose, and described input shaft of speed reducer is passed from the center hole of fluid director.
6. blower fan of cooling tower according to claim 5, it is characterized in that: the cross section of described water inlet flow channel is the diminishing circle of area or trapezoidal, the upper wall surface of water inlet flow channel is to centroclinal layout and downward along the helix rotation, and the upper wall surface of water inlet flow channel is wholely set in center and cover plate.
7. according to claim 1 or 2 or 3 described blower fan of cooling tower, it is characterized in that: the outlet pipe, described outlet pipe and the many siphunculus of pipe shape export mixes that link to each other with water-dispensing device of being used for that directly are communicated with the axis normal that is provided with axis and the outlet of pipe shape on the termination of the pipe shape of the fluid outlet of described runner housing outlet.
8. blower fan of cooling tower according to claim 7, it is characterized in that: be provided with the taper water knockout drum in the below of impeller in the pipe shape outlet of the fluid outlet of described runner housing, the baffling direction of the described taper water knockout drum conical surface is relative with the mouth of pipe of the outlet pipe of pipe shape outlet end.
9. blower fan of cooling tower according to claim 8 is characterized in that: described taper water knockout drum is circular cone or pyramid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910305441A CN101634308A (en) | 2009-08-10 | 2009-08-10 | Draught fan of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910305441A CN101634308A (en) | 2009-08-10 | 2009-08-10 | Draught fan of cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101634308A true CN101634308A (en) | 2010-01-27 |
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ID=41593604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910305441A Pending CN101634308A (en) | 2009-08-10 | 2009-08-10 | Draught fan of cooling tower |
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| Country | Link |
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| CN (1) | CN101634308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244440B (en) * | 2013-05-27 | 2015-08-26 | 彭振喜 | Hydrodynamic(al) wind power thruster and cooling tower wind power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272508Y (en) * | 1996-04-12 | 1998-01-14 | 重庆市长城减速机厂 | Inverse installed planetary gear speed-reducer for cooling tower |
| CN1272113C (en) * | 2004-01-17 | 2006-08-30 | 威海际高制冷空调设备有限公司 | Water distributing device |
| CN2926563Y (en) * | 2006-05-29 | 2007-07-25 | 陈谦 | Hydraulic turbine of cooling tower |
| CN101382142A (en) * | 2008-10-20 | 2009-03-11 | 河南新飞纪元科技有限公司 | Cooling tower blower fan apparatus driven by reversing water pump |
| CN201250750Y (en) * | 2008-09-16 | 2009-06-03 | 河南新飞纪元科技有限公司 | Mixed-flow type hydraulic turbine specially for driving cooling tower blower |
-
2009
- 2009-08-10 CN CN200910305441A patent/CN101634308A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272508Y (en) * | 1996-04-12 | 1998-01-14 | 重庆市长城减速机厂 | Inverse installed planetary gear speed-reducer for cooling tower |
| CN1272113C (en) * | 2004-01-17 | 2006-08-30 | 威海际高制冷空调设备有限公司 | Water distributing device |
| CN2926563Y (en) * | 2006-05-29 | 2007-07-25 | 陈谦 | Hydraulic turbine of cooling tower |
| CN201250750Y (en) * | 2008-09-16 | 2009-06-03 | 河南新飞纪元科技有限公司 | Mixed-flow type hydraulic turbine specially for driving cooling tower blower |
| CN101382142A (en) * | 2008-10-20 | 2009-03-11 | 河南新飞纪元科技有限公司 | Cooling tower blower fan apparatus driven by reversing water pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244440B (en) * | 2013-05-27 | 2015-08-26 | 彭振喜 | Hydrodynamic(al) wind power thruster and cooling tower wind power system |
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Application publication date: 20100127 |