CN202707339U - Natural air supplement device at axis center of horizontal shaft impulse turbine - Google Patents
Natural air supplement device at axis center of horizontal shaft impulse turbine Download PDFInfo
- Publication number
- CN202707339U CN202707339U CN2012203324441U CN201220332444U CN202707339U CN 202707339 U CN202707339 U CN 202707339U CN 2012203324441 U CN2012203324441 U CN 2012203324441U CN 201220332444 U CN201220332444 U CN 201220332444U CN 202707339 U CN202707339 U CN 202707339U
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- China
- Prior art keywords
- pipe
- blowdown pipe
- casing
- air supplement
- runner
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a natural air supplement device at the axis center of a horizontal shaft impulse turbine. The natural air supplement device comprises a case (1), a nozzle (2) and a rotating wheel (3). A left air inlet pipe (4) is arranged outside the left side wall of the case (1), and a right air inlet pipe (5) is arranged outside the right side wall of the case (1). A left air supplement pipe (6) and a right air supplement pipe (7) are arranged inside the case (1). The left air supplement pipe (6) is communicated with the atmosphere through the left air inlet pipe (4), and the right air supplement pipe (7) is communicated with the atmosphere through the right air inlet pipe (5). The left air supplement pipe (6) and the right air supplement pipe (7) are placed below the rotating wheel (3). The axes of the left air supplement pipe (6) and the right air supplement pipe (7) are perpendicular to a water diversion active face (3a) of a bailer of the rotating wheel (3). According to the vacuum forming principle of the impulse turbine, the thinnest position of a water curtain of the case is found, and the air supplement pipes are arranged on the position. Once a vacuum is formed inside the case, air is supplemented into the case automatically through atmosphere pressure, and additional manual operation such as mechanical operation, electrical power operation and instrument and meter operation is of no need.
Description
Technical field
The utility model relates to the hydroelectric generator technical field, is specifically related to a kind of making-up air device of horizontal axis impulse turbine, is applicable to the horizontal axis impulse turbines such as single nozzle, twin nipple and three nozzles.
Background technique
The horizontal axis impulse turbine is finished the current of merit under the effect of runner centrifugal force when normal operation, major part is thrown on the enclosure wall, and flows downward along enclosure wall, forms cascade.Because general tail water aeration height only has 0.6m～0.8m, therefore along with the increase of unit load (generally exist〉50% aperture after), cascade thickness increases, reach certain thickness cascade and flow down to link to each other with tail water and sealed venting channels.Along with the row of not stopping transport of unit, the casing current ceaselessly outflow, and the current of outflow are constantly taken away the air in the casing, when the air that enters from the tail water cascade is less than the air that tail water takes away, just form gradually vacuum in the casing.The above is the vacuum formation mechanism of impulse turbine.
Along with the air pressure in the casing reduces, the formation of vacuum, the current that can cause on the one hand runner absorption to finish merit form pearl chain around the runner cylindrical, cause the rotational resistance of runner to increase, thereby lower efficiency, and bring huge economic loss; Vacuum can cause the cavitation of runner and nozzle needle to be damaged on the other hand, and can produce larger noise, causes unit vibration etc.
In sum, the runner of impulse turbine must be to rotate in atmosphere, could the most effective kinetic energy with current be converted to mechanical energy and converts electric energy to by generator again.Yet, most of horizontal axis impulse turbines all are not equipped with making-up air device, minority is equipped with the horizontal axis impulse turbine of making-up air device, exist again: a) the making-up air device mounting point is not right, atmosphere can't be filled into, even the current in the casing are drawn, so that current splash, damage other electrical equipments; B) design and manufacture cost of making-up air device is high, need machinery or the manual operations such as electric power and instrument and apparatus; C) arranging of making-up air device affects the interior series of problems such as maintenance of casing.
The model utility content
The purpose of this utility model provide a kind of safe and reliable, make the horizontal axis impulse turbine axis centre nature making-up air device that operating cost is low, be easy to arrange.
For this reason, the technological scheme that the utility model adopts is: a kind of horizontal axis impulse turbine axis centre nature making-up air device, comprise casing, and be arranged on nozzle and runner in the casing, the axis horizontal setting of described runner and about extend, key is: the left side wall of described casing is outside equipped with left suction tude, right side wall is outside equipped with right suction tude, be provided with left blowdown pipe and right blowdown pipe in the casing, described left blowdown pipe communicates with atmosphere after upwards extending by left suction tude, right blowdown pipe communicates with atmosphere after upwards extending by right suction tude; Described left and right blowdown pipe is positioned at runner below, and the axis of left and right blowdown pipe divides water sword face perpendicular to the bucket of runner.
Vacuum according to the horizontal axis impulse turbine forms mechanism, finds the thinnest position of cascade in casing, i.e. the best position of blowdown pipe in casing.About blowdown pipe is divided into two, be arranged in the sidewall of the casing left and right sides, blowdown pipe is positioned at runner below, and the axis of blowdown pipe divides water sword face perpendicular to the bucket of runner, satisfy the blowdown pipe of above-mentioned installation requirement, its axis is inevitable also to be parallel to the runner axis, perpendicular to the injection stream axis.Blowdown pipe install this position passes cascade thickness, just can successfully atmosphere be filled into casing automatically, thereby eliminates the vacuum in the casing.Rely on the tonifying Qi of atmospheric pressure nature, namely in the casing in case forms vacuum, barometric pressure just fills into air in the casing automatically, does not need the in addition mechanical or manual operations such as electric power and instrument and apparatus.
Preferred as this programme, the end that described left blowdown pipe links to each other with left suction tude is fixed on the left side wall of casing by tonifying Qi flange and screw, the end that right blowdown pipe links to each other with right suction tude is fixed on the right side wall of casing by tonifying Qi flange and screw, and the other end of left and right blowdown pipe is respectively arranged with the tonifying Qi bend pipe; Blowdown pipe links to each other with chassis sidewall with screw by the tonifying Qi flange, when overhauling the parts such as nozzle, runner in casing when needs, can easily left and right blowdown pipe be taken off; In addition, at the end of blowdown pipe the tonifying Qi bend pipe is set, can prevents that the current when runner rotates from directly pouring in the blowdown pipe.
Described left and right suction tude is upwards extended by intake elbow, expansion gas coning pipe and inlet flange near an end of atmosphere and is communicated with atmosphere to factory building wall rear again, also is provided with filter screen between expansion gas coning pipe and inlet flange.Optimize structure when arranging, by filter screen is set, prevents foreign or artificially foreign matter is dropped in the blowdown pipe, suction tude, blowdown pipe are stopped up.
Its beneficial effect is: this nature making-up air device tonifying Qi is effective, cost is low, reliable, installation is changed conveniently, long service life, improved runner efficient, increased the economic benefit in power station, having controlled simultaneously the cavitation of nozzle needle, nozzle damages, reduced the noise of water turbine, improve the reliability of water turbine, guaranteed economic benefit and the security of operation in power station; Be applicable to the horizontal axis impulse turbines such as horizontal axis single nozzle impulse turbine, horizontal axis twin nipple impulse turbine and horizontal axis three nozzle impact type water turbines.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to partial view.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is the another kind of structural type of Fig. 3.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Such as Fig. 1, horizontal axis impulse turbine axis centre shown in Figure 3 nature making-up air device, by casing 1, and be arranged on the compositions such as nozzle 2 in the casing 1 and runner 3.Casing 1 is interior to be provided with two nozzles 2 altogether, two nozzles 2 are around the periphery of runner 3 and all towards runner 3 settings, the jet axis 2a of each nozzle 2 is all tangent with the pitch circle of runner 3, each nozzle 2 correspondence is provided with a nozzle intake pipe 17, the axis horizontal setting of runner 3 and about extend, therefore be called horizontal axis twin nipple impulse turbine.
In the face of the water inlet direction of nozzle 2, determine front and back position.The left side wall of casing 1 is outside equipped with left suction tude 4, right side wall is outside equipped with right suction tude 5, be provided with left blowdown pipe 6 and right blowdown pipe 7 in the casing 1, left blowdown pipe 6 communicates with atmosphere after upwards extending by left suction tude 4, right blowdown pipe 7 communicates with atmosphere after upwards extending by right suction tude 5.Left blowdown pipe 6, right blowdown pipe 7 all are positioned at runner 3 belows, and the axis of left blowdown pipe 6 and right blowdown pipe 7 all divides water sword face 3a perpendicular to the bucket of runner 3.As shown in Figure 3, runner 3 is symmetrical member, and it is the bilateral symmetry separating surface of runner 3 that bucket divides water sword face 3a.The axis of left blowdown pipe 6 and right blowdown pipe 7 divides water sword face 3a perpendicular to the bucket of runner 3, and so, the axis of left blowdown pipe 6 and right blowdown pipe 7 also must be parallel to runner 3 axis, perpendicular to the jet axis 2a of nozzle 2.Runner 3 rotates formed cascade 18, and casing 1 interior cascade 18 the thinnest positions are exactly the best position of blowdown pipe.
As shown in Figure 4, the end that left blowdown pipe 6 links to each other with left suction tude 4 is fixed on the left side wall of casing 1 by tonifying Qi flange 10 and screw 11, the end that right blowdown pipe 7 links to each other with right suction tude 5 is fixed on the right side wall of casing 1 by tonifying Qi flange 10 and screw 11, and the other end of left blowdown pipe 6 and right blowdown pipe 7 is respectively arranged with tonifying Qi bend pipe 8.
Shown in Fig. 1,3, left blowdown pipe 6, right blowdown pipe 7, tonifying Qi bend pipe 8 are preferably made by seamless steel pipe, and caliber is Φ 50mm～Φ 400mm, and the length of left blowdown pipe 6, right blowdown pipe 7 is greater than 100mm; Left and right blowdown pipe 6,7 axis preferably be positioned at runner 3 axis under, left blowdown pipe 6 is symmetrical arranged in casing 1 with right blowdown pipe 7.
Left suction tude 4 and right suction tude 5 are upwards extended by intake elbow 15, expansion gas coning pipe 14 and inlet flange 13 near an end of atmosphere and are communicated with atmosphere to factory building wall 12 rears again, in conjunction with shown in Figure 2, between expansion gas coning pipe 14 and inlet flange 13, preferably also be provided with filter screen 16.Intake elbow 15 also can be set, expand gas coning pipe 14 and inlet flange 13, and directly be communicated with atmosphere by left suction tude 4, right suction tude 5; The end that left suction tude 4, right suction tude 5 communicate with atmosphere also is arranged on by the support of water turbine.The structural arrangement form of left suction tude 4 and right suction tude 5 is various, as long as atmosphere can be introduced in left blowdown pipe 6 and the right blowdown pipe 7.During installation, left and right blowdown pipe 6,7 axial line distance factory building terrace surface 9 are preferably 0.1m～3m.
The above only is the preferred embodiment of model utility; not with this restriction as model utility; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. horizontal axis impulse turbine axis centre nature making-up air device, comprise casing (1), and be arranged on nozzle (2) and runner (3) in the casing (1), the axis horizontal setting of described runner (3) and about extend, it is characterized in that: the left side wall of described casing (1) is outside equipped with left suction tude (4), right side wall is outside equipped with right suction tude (5), be provided with left blowdown pipe (6) and right blowdown pipe (7) in the casing (1), described left blowdown pipe (6) communicates with atmosphere after upwards extending by left suction tude (4), right blowdown pipe (7) communicates with atmosphere after upwards extending by right suction tude (5); Described left and right blowdown pipe (6,7) is positioned at runner (3) below, and the axis of left and right blowdown pipe (6,7) divides water sword face (3a) perpendicular to the bucket of runner (3).
2. according to horizontal axis impulse turbine axis centre nature making-up air device claimed in claim 1, it is characterized in that: the end that described left blowdown pipe (6) links to each other with left suction tude (4) is fixed on the left side wall of casing (1) by tonifying Qi flange (10) and screw (11), the end that right blowdown pipe (7) links to each other with right suction tude (5) is fixed on the right side wall of casing (1) left side by tonifying Qi flange (10) and screw (11), right blowdown pipe (6,7) the other end is respectively arranged with tonifying Qi bend pipe (8).
3. according to horizontal axis impulse turbine axis centre nature making-up air device claimed in claim 2, it is characterized in that: described left blowdown pipe (6), right blowdown pipe (7), tonifying Qi bend pipe (8) are made by seamless steel pipe, caliber is Φ 50mm～Φ 400mm, and the length of left blowdown pipe (6), right blowdown pipe (7) is greater than 100mm.
4. according to claim 1 or 2 described horizontal axis impulse turbine axis centre nature making-up air devices, it is characterized in that: the axis of described left and right blowdown pipe (6,7) be positioned at runner (3) axis under.
5. according to each described horizontal axis impulse turbine axis centre nature making-up air device in the claim 1-3, it is characterized in that: described left and right suction tude (4,5) is upwards extended by intake elbow (15), expansion gas coning pipe (14) and inlet flange (13) near an end of atmosphere and is communicated with atmosphere to factory building wall (12) rear again, also is provided with filter screen (16) between expansion gas coning pipe (14) and inlet flange (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203324441U CN202707339U (en) | 2012-07-10 | 2012-07-10 | Natural air supplement device at axis center of horizontal shaft impulse turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203324441U CN202707339U (en) | 2012-07-10 | 2012-07-10 | Natural air supplement device at axis center of horizontal shaft impulse turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707339U true CN202707339U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203324441U Expired - Lifetime CN202707339U (en) | 2012-07-10 | 2012-07-10 | Natural air supplement device at axis center of horizontal shaft impulse turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971800A (en) * | 2016-06-16 | 2016-09-28 | 成都聚智工业设计有限公司 | Water turbine |
-
2012
- 2012-07-10 CN CN2012203324441U patent/CN202707339U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971800A (en) * | 2016-06-16 | 2016-09-28 | 成都聚智工业设计有限公司 | Water turbine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |