CN100362244C - All welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, and manufacturing method thereof - Google Patents
All welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, and manufacturing method thereof Download PDFInfo
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- CN100362244C CN100362244C CNB2005100208119A CN200510020811A CN100362244C CN 100362244 C CN100362244 C CN 100362244C CN B2005100208119 A CNB2005100208119 A CN B2005100208119A CN 200510020811 A CN200510020811 A CN 200510020811A CN 100362244 C CN100362244 C CN 100362244C
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Abstract
The present invention discloses an all welded steel structure large-sized water cooling type bearing seat for a blower of an electric station and a making method thereof. The present invention is characterized in that Q235A type steel with excellent welding performance is adopted to be processed into separate components, and then, the separate components are combined. All the separate components are welded into an upper cover and a lower seat of the bearing seat by carbon dioxide gas protective welding. A cooling water passage, a lubrication oil tank and a temperature detection passage are arranged in the bearing seat. First, rough gold processing is carried out after welding and annealing; second, annealing is carried out again after the rough gold processing; third, fine gold processing is carried out; finally, hydraulic tests are carried out on the cooling water passage and the lubrication oil tank. The present invention has the advantages that the unavoidable casting defects of a casting are eliminated and the waste product rate is greatly lowered; used materials can be reduced by more than 25%; the cooling water passage has a large diameter and a good cooling effect; the bearing seat of the prevent invention has good brittle failure resistant capability, difficult damage in use, short production period, no need of casting mould, and low product cost.
Description
Technical field
The present invention relates to the blower fan that large-scale power station uses, specifically, is the bearing support and the manufacture method thereof of this blower fan.
Background technique
The blower fan that large-scale power station uses, it is a kind of visual plant that runs without interruption for a long time, during blower fan work, the reaction force acts that produces during its main rotor axle transmitting torque is on bearing, bearing support is the matrix of carrying boss rod, this just requires bearing support must have enough rigidity, and therefore, existing bearing fan adopts iron casting to form.But then, blower fan is in the acting process, because the compression of air, the casing temperature can reach about 100 ℃ generally more than 80 ℃ summer, therefore, in the bearing support cooling unit must be set; Simultaneously, because bearing need lubricate, also lubricating fitting must be set in the seat, this just makes that the structure of bearing support is very complicated.Blower fan has two kinds of patterns, a kind of is the common blower fan that supports respectively at the rotating shaft two ends, and another kind is a cantilever type blower fan at rotating shaft one end bearing, and cantilever type bearing fan inherence is axially arranged with two cover bearings, all need to be provided with cooling unit, the structure of bearing support is more complicated.Therefore, the casting technique difficulty of bearing support is very big, and is loaded down with trivial details unusually, and casting defect also is difficult to avoid, quality can not guarantee that blank up-to-standard rate lower always (about 50%) causes the product cost height, economic benefit is low, also delays delivery date sometimes, has a strong impact on goodwill.
As seen, enough rigidity and complicated structure become the contradiction of a pair of bad processing of bearing support design.
Summary of the invention
The purpose of this invention is to provide a kind of all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station and processing method thereof, solved above-mentioned contradiction effectively, this bearing support not only has the rigidity and the fundamental function structure of designing requirement, and the performance of each functional structure is better than the existing bearing seat, processing technology is reliable, constant product quality, cost is low.
Realize that the object of the invention adopts following technological scheme:
A kind of all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, comprise loam cake with cooling water channel and temperature detection passage, have following of cooling water channel, with loam cake, following lubricating oil tank that is connected as a single entity, the two ends of bearing support are provided with end cap, loam cake, following are respectively equipped with bolt hole and the positioning pin hole that corresponds to each other, and following seat is provided with anchor (bolt) hole.
Described loam cake comprises that the port of back-off layout has " U " female cap plate of flange, the bearing supporting ring that is connected with the cover plate flange first, two blocks of liner plates vertically arranging between first at cover plate, bearing supporting ring, described cover plate, bearing supporting ring first, two cavitys that liner plate surrounded constitute cooling water channels, are respectively equipped with the entery and delivery port that is communicated with cooling water channel on two sidewalls of cover plate.
Described following base that comprises horizontal arrangement, vertically be arranged in upper end on the base and have two blocks of side plates of flange, the bearing supporting ring that is connected with the side plate flange second, two blocks of liner plates vertically arranging between second at base, bearing supporting ring, described base, bearing supporting ring second, the cavity that surrounds of two blocks of liner plates and two blocks of side plates constitutes cooling water channels, is respectively equipped with the entery and delivery port that is communicated with cooling water channel on two blocks of side plates.
All above-mentioned parts all adopt the Q235A steel with superior weldability energy, all are welded to connect each other.
Be provided with in the described cooling water channel and connect first thermometric tunnel tube of cover plate and bearing supporting ring flat-plate.
The top of described " U " female cap plate is provided with the piece that hangs of welding with it, and hanging has the hanging bolt hole on the piece.
Be provided with the stiffening rib of welding with it between described following base and the side plate.
Because blower fan has two kinds of patterns, a kind of is the common blower fan that supports respectively at the rotating shaft two ends, and another kind is a cantilever type blower fan at rotating shaft one end bearing.For this reason, this bearing support also has two kinds of structures correspondingly:
Described cantilever type bearing fan has two supporting positions, and bearing supporting ring, cooling water channel, the base at place, two supporting positions are symmetrically distributed in the two ends of bearing support; Be provided with lubricating oil tank between two supporting positions, oil tank wall is provided with oil ga(u)ge.
Described common bearing fan has only a supporting position; Bearing support one end is provided with lubricating oil tank, and oil tank wall is provided with oil ga(u)ge.
The processing method of above-mentioned all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station comprises the steps:
1.. press the production engineering specifications blanking, process each part;
2.. select the H08Ma2Si welding rod for use, adopt carbon dioxide gas arc welding, each part is welded into loam cake, following integral body;
3.. post-weld annealed eliminates stress; Heat 550-650 ℃, time 1-2 hour, naturally cool to normal temperature then;
4.. roughing;
5.. double annealing eliminates stress; Heat 550-650 ℃, time 1-2 hour, naturally cool to normal temperature then;
6.. fine finishing adheres to specification its precision, roughness;
7.. cooling water channel is carried out the hydrostatic test, pressure 4 * 10
5Pa, constant voltage time 1 hour;
8.. cooling water channel and lubricating oil tank are carried out leak test;
9.. Checking of finished products.
Compare with existing cast-iron chock, on the basis that guarantees rigidity and fundamental function structure, this all welded steel structured bearing support has following advantage:
1. eliminated the inevitable casting defect of foundry goods, reject rate descends significantly;
2. because the Young's modulus of steel almost is two times of cast iron, product materials can reduce more than 25%;
3. all welded steel structured anti-brittle failure energy force rate cast iron is good, and is not fragile in the use;
4. add man-hour in small lot, have very big flexibility, with short production cycle; And need not make casting mould, reduce product cost significantly;
5. compare with the cast-iron chock of same specification, the latus rectum of cooling water channel is bigger, good cooling results.
Certainly, on the other hand, less when workpiece, complex structure is special-shaped, when in batches very big, foundry goods still has superiority economically, and bearing fan is very little in batches parts in blower fan manufacturing enterprise, and the employing foundry goods does not only have superiority economically, has aforementioned many shortcomings on the contrary; Though welded structure also exists welding deformation and stress, stress problem such as to concentrate, select and integrated treatment is carried out in the processing technology aspect from product structure design, material according to the present invention, can fine solution and control.
Description of drawings
Fig. 1 is a following plan view of cantilever type bearing fan;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the A-A view of Fig. 2;
Fig. 4 is that the C of Fig. 1 is to view.
Fig. 5 is the loam cake plan view of cantilever type bearing fan;
Fig. 6 is the plan view of Fig. 5;
Fig. 7 is the A-A view of Fig. 6;
Fig. 8 is that the C of Fig. 5 is to view.
Fig. 9 is a following plan view of common bearing fan;
Figure 10 is the plan view of Fig. 9;
Figure 11 is that the C of Fig. 9 is to view;
Figure 12 is the A-A view of Figure 10.
Figure 13 is the loam cake plan view of common bearing fan;
Figure 14 is the plan view of Figure 13;
Figure 15 is that the C of Figure 13 is to view;
Figure 16 is the A-A view of Figure 13.
Code name implication among Fig. 1 to Fig. 8:
The 1-base; The 2-side plate; 3,6,15,18-flange; 4-bearing supporting ring second; 5,17--liner plate; 7,19-water channel hole; 8,20,23-screw; The 9-stiffening rib; The 10-pollutant exhaust hole; The 11-oil ga(u)ge; The 12-base plate; The 13-oil drainage hole; 14-" U " female cap plate; 16-bearing supporting ring first; The 21-hoist block; 22-temperature detection passage; The 24-tank filler sleeve.
Code name implication among Fig. 9 to Figure 16:
1 '-base; 2 '-side plate; 3 ', 6 ', 15 ', 18 '-flange; 4 '-bearing supporting ring second; 5 ', 17 '-liner plate; 7 ', 19 '-water channel hole; 8 ', 20 ', 23 '-screw; 9 '-stiffening rib; 10 '-pollutant exhaust hole; 11 '-oil ga(u)ge; 12 '-base plate; 13 '-oil drainage hole; 14 '-" U " female cap plate; 16 '-bearing supporting ring first; 21 '-hoist block; 22 '-temperature detection passage; 24 '-tank filler sleeve; 25-fuel tank flange second; 26-fuel tank outside end plate second; 27-fuel tank flange first; 28-fuel tank outside end plate first.
Embodiment
The cantilever type bearing fan is formed with loam cake by following that cooperatively interacts referring to Fig. 1 to Fig. 8.
Following stand structure is referring to Fig. 1 to Fig. 4: it comprises the base 1 of horizontal arrangement, vertically be arranged symmetrically in two blocks of side plates 2 on the base 1, the upper end of side plate 2 has the flange 3 of horizontal arrangement, the bearing supporting ring that is connected with flange 3 second 4, be positioned at base 1, second two blocks of liner plates 5 vertically arranging between 4 of bearing supporting ring, this base 1, the bearing supporting ring second 4, two blocks of liner plates 5 and two cavity formation cooling water channels that side plate 2 surrounds, on two blocks of side plates 2, be respectively equipped with into, water-output flange 6, the hole 7 and the screw 8 that is used to be connected the external water pipe flange that are communicated with cooling water channel are arranged on the flange 6, also be provided with cooling water channel pollutant exhaust hole 10 on the base 1, for making things convenient for blowdown, the opening of pollutant exhaust hole 10 should be drawn from the end face of base 1, and pollutant exhaust hole 10 is blocked with the plug (not shown) usually.Be provided with the base plate 12 of a horizontal arrangement following bottom, weld with biside plate 2 and two interior side plates 5 respectively on its four limit, constitutes lubricating oil tank jointly, is provided with an oil ga(u)ge 11 on side plate 2, is used to observe the oil level height; Base plate 12 is provided with oil drainage hole 13, gets rid of lubricant oil when being used to overhaul, and blocks with the plug (not shown) usually.In order to strengthen the rigidity of bearing support, between base 1 and side plate 2, arranged four stiffening ribs 9, be symmetrically distributed in four jiaos of base 1.
Superstructure is referring to Fig. 5 to Fig. 8: comprise " U " female cap plate 14 that back-off is arranged, the flange 15 that the end opening of " U " female cap plate 14 has horizontal arrangement, the bearing supporting ring that is connected with flange 15 first 16, at first two blocks of liner plates 17 vertically arranging between 16 of cover plate 14, bearing supporting ring, the cavity that this " U " female cap plate 14, first 16, two blocks of liner plates 17 of bearing supporting ring are surrounded constitutes cooling water channel, is respectively equipped with entery and delivery port flange 18 on two sidewalls of " U " female cap plate 14; The hole 19 and the screw 20 that is used to be connected the external water pipe flange that are communicated with cooling water channel are arranged on the flange 18; On the top of " U " female cap plate 14, be provided with the hoist block 21 of two symmetric arrangement, be useful on the screw 23 that connects hoisting ring on the hoist block 21; Go up on " U " female cap plate 14 tops also has lubricant oil tank filler sleeve 24; The temperature detection passage 22 of each bearing is made up of two steel pipes, and it is positioned at cooling water channel, the lower end run through the bearing supporting ring first 16, " U " female cap plate 14 and hoist block 21 are run through in the upper end, the place of passing through welding.Like this, the contact of temperature transducer (also bar thermometer) can directly contact measured bearing, and cooling water channel still keeps sealing, can not leak.
Be loam cake convenient for assembly, contraposition following the time, be preferably in that cover bores the location taper hole on their flange 3, flange 15, locate with adaptive taper pin.
Above-mentioned bearing support two ends also are provided with the end cap (not shown), are connected with the end of bearing supporting ring 4,16 respectively by bolt.
Common bearing fan is referring to Fig. 9 to Figure 16: it and cantilever type bearing fan are similar, difference is to have only a supporting position, so lubricating oil tank is located at an end of bearing support, the casing of lubricating oil tank is bucket-shaped, it comprises, the extension of following seat side plate 2 ' and flange 3 ' thereof, the base plate 12 ' that is in tilted layout, inboard end plate is used liner plate 5 ', and outside end plate 26 increases newly.The case lid of lubricating oil tank comprises, the extension of loam cake " U " female cap plate 14 ' and flange 15 ' thereof, inboard end plate is used liner plate 17 ', outside end plate 28 increases newly, the outside end plate 26,28 of casing, case lid at grade, common form a complete fuel tank outside end plate, fuel tank outside end plate is provided with the flange that is used to connect the end cap (not shown), this flange by second 25, first 27 constitutes.Base plate 12 ' is in tilted layout, and the casing that makes lubricating oil tank is bucket-shaped, and purpose is to be convenient to base plate 12 ' be connected with base 1 ', in order to avoid amplify the size of base 1 '.In addition, the lubricant oil tank filler sleeve 24 ' on the last caping, the lifting eye of also holding concurrently, the screw 23 ' on it and the hoist block 21 ' is used to lift by crane loam cake jointly.All the other are identical with the cantilever type bearing fan, will not give unnecessary details.
The processing method and the technical requirements of above-mentioned all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station are as follows:
1. select Q235A shaped steel for use, press the production engineering specifications blanking, process each part;
2. weld then, select the H08Ma2Si welding rod for use, adopt carbon dioxide gas arc welding, each part is welded into loam cake, following integral body;
3. the weldment postwelding carries out the annealing first time, to eliminate stress; Be heated to 600 ℃, 1.5 hours time, naturally cool to normal temperature then;
4. with weldment roughing on lathe;
5. annealing for the second time eliminates stress; Be heated to 600 ℃, 1.5 hours time, naturally cool to normal temperature then;
6. fine finishing on lathe adheres to specification its morpheme dimensional accuracy, roughness;
7. cooling water channel is carried out the hydrostatic test, pressure 4 * 10
5Pa, constant voltage time 1 hour, the weld seam ne-leakage is promptly qualified;
8. lubricating oil tank is carried out leak test, add lubricant oil in fuel tank, left standstill under the normal pressure 2 hours, the weld seam ne-leakage is promptly qualified;
9. Checking of finished products.
Claims (8)
1. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, comprise loam cake with cooling water channel and temperature detection passage, have following of cooling water channel, with loam cake, following lubricating oil tank that is connected as a single entity, the two ends of bearing support are provided with end cap, loam cake, following are respectively equipped with bolt hole and the positioning pin hole that corresponds to each other, and following seat is provided with anchor (bolt) hole; It is characterized in that:
Described loam cake comprises that the port of back-off layout has " U " female cap plate of flange, the bearing supporting ring that is connected with the cover plate flange first, two blocks of liner plates vertically arranging between first at cover plate, bearing supporting ring, described cover plate, bearing supporting ring first, two cavitys that liner plate surrounded constitute cooling water channels, are respectively equipped with the entery and delivery port that is communicated with cooling water channel on two sidewalls of cover plate;
Described following base that comprises horizontal arrangement, vertically be arranged in upper end on the base and have two blocks of side plates of flange, the bearing supporting ring that is connected with the side plate flange second, two blocks of liner plates vertically arranging between second at base, bearing supporting ring, described base, bearing supporting ring second, the cavity that surrounds of two blocks of liner plates and two blocks of side plates constitutes cooling water channels, is respectively equipped with the entery and delivery port that is communicated with cooling water channel on two blocks of side plates;
All above-mentioned parts all are welded to connect each other.
2. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station according to claim 1 is characterized in that: all above-mentioned parts all adopt the Q235A steel to process.
3. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station according to claim 1 is characterized in that: be provided with in the described cooling water channel and connect first thermometric tunnel tube of cover plate and bearing supporting ring flat-plate.
4. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station according to claim 1 is characterized in that: the top of described " U " female cap plate is provided with the piece that hangs of welding with it, and hanging has the hanging bolt hole on the piece.
5. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station according to claim 1 is characterized in that: be provided with the stiffening rib of welding with it between described following base and the side plate.
6. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station according to claim 1, it is characterized in that: described bearing support is the bearing support with two supporting positions, and bearing supporting ring, cooling water channel, the base at place, two supporting positions are symmetrically distributed in the two ends of bearing support; Be provided with lubricating oil tank between two supporting positions, oil tank wall is provided with oil ga(u)ge.
7. all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station according to claim 1 is characterized in that: described bearing support is the bearing support that has only a supporting position; Bearing support one end is provided with lubricating oil tank, and oil tank wall is provided with oil ga(u)ge.
8. the processing method of the described all welded steel structured bearing seat of blower fan water-cooling type in large-scale power station of claim 1 comprises the steps:
1.. press the production engineering specifications blanking, process each part;
2.. select the H08Ma2Si welding rod for use, adopt carbon dioxide gas arc welding, each part is welded into loam cake, following integral body;
3.. post-weld annealed eliminates stress; Heating-up temperature 550-650 ℃, time 1-2 hour, naturally cool to normal temperature then;
4.. roughing;
5.. double annealing eliminates stress; 550-650 ℃ of heating-up temperature temperature time 1-2 hour, naturally cools to normal temperature then;
6.. fine finishing adheres to specification its precision, roughness;
7.. cooling water channel is carried out the hydrostatic test;
8.. cooling water channel and lubricating oil tank are carried out leak test;
9.. Checking of finished products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100208119A CN100362244C (en) | 2005-04-29 | 2005-04-29 | All welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100208119A CN100362244C (en) | 2005-04-29 | 2005-04-29 | All welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN1687600A CN1687600A (en) | 2005-10-26 |
| CN100362244C true CN100362244C (en) | 2008-01-16 |
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| CNB2005100208119A Expired - Fee Related CN100362244C (en) | 2005-04-29 | 2005-04-29 | All welded steel structured bearing seat of blower fan water-cooling type in large-scale power station, and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756249A (en) * | 2011-03-18 | 2012-10-31 | 威尔机械江苏有限公司 | Machining method for bearing seat of continuous casting machine |
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| CN101846136A (en) * | 2010-05-27 | 2010-09-29 | 江苏安泰动力机械有限公司 | Main bearing block of low-speed diesel engine |
| CN102756250B (en) * | 2011-03-18 | 2014-04-30 | 威尔机械江苏有限公司 | Machining method for bearing seat of continuous casting machine |
| CN103007829A (en) * | 2012-12-28 | 2013-04-03 | 桂林桂冶重工股份有限公司 | Welding base for cubic hydraulic machine |
| CN103612081B (en) * | 2013-11-27 | 2015-12-02 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of preparation method of runner of injection mold |
| CN103727137A (en) * | 2013-12-13 | 2014-04-16 | 湖北省风机厂有限公司 | Water-cooling self-lubricating slide bearing box |
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| CN108705220B (en) * | 2018-04-27 | 2021-05-11 | 武汉船用机械有限责任公司 | Bearing shell and manufacturing method thereof |
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| US3469063A (en) * | 1967-05-29 | 1969-09-23 | Textron Inc | Projection welding of bearing mounts |
| CN2206852Y (en) * | 1994-08-25 | 1995-09-06 | 郑淑玲 | Bearing base of water pump |
| CN1115012A (en) * | 1995-02-28 | 1996-01-17 | 杨述臣 | Position differential type self-circulation water-cooling bearing box |
| CN2572069Y (en) * | 2002-09-11 | 2003-09-10 | 田聚京 | Upper bearing seat capable of being lubricated |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3469063A (en) * | 1967-05-29 | 1969-09-23 | Textron Inc | Projection welding of bearing mounts |
| CN2206852Y (en) * | 1994-08-25 | 1995-09-06 | 郑淑玲 | Bearing base of water pump |
| CN1115012A (en) * | 1995-02-28 | 1996-01-17 | 杨述臣 | Position differential type self-circulation water-cooling bearing box |
| CN2572069Y (en) * | 2002-09-11 | 2003-09-10 | 田聚京 | Upper bearing seat capable of being lubricated |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756249A (en) * | 2011-03-18 | 2012-10-31 | 威尔机械江苏有限公司 | Machining method for bearing seat of continuous casting machine |
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| CN1687600A (en) | 2005-10-26 |
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