CN1769714A - Water injection pump with silicon nitride ceramic impeller and guide blade, and making method thereof - Google Patents
Water injection pump with silicon nitride ceramic impeller and guide blade, and making method thereof Download PDFInfo
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- CN1769714A CN1769714A CN 200410052139 CN200410052139A CN1769714A CN 1769714 A CN1769714 A CN 1769714A CN 200410052139 CN200410052139 CN 200410052139 CN 200410052139 A CN200410052139 A CN 200410052139A CN 1769714 A CN1769714 A CN 1769714A
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- impeller
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- water injection
- injection pump
- silicon nitride
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Abstract
The invention discloses a water injection pump and preparing method with silicon nitride ceramic impeller and guide vane, which comprises the following steps: adding temporary adhesive in the silicon powder according to different type structures and dimensions of impeller and guide vane; adapting isostatic compaction method to make high density impeller and vane; nitriding the shaped impeller and vane after degreased; heating the impeller and vane of silicon powder biscuit in the nitrogen at 1150-1200 deg.c; insulating for 1-1.5 h to make the mould possess certain strength and rigidity; obtaining the product through mechanic manufacturing, dynamic balancing test and formal nitriding burning. The invention can accomplish the energy-saving and preservation, which lengthens the lifetime of water injection pump to reduce the motor power and maintenance cost.
Description
Technical field
The present invention relates to water injection pump that has silicon nitride ceramic impeller, stator and preparation method thereof.
Background technique
In land existing 14 oil fields of China, basically all be the old filed of developing in the 60-70 age, crude output descends year by year, decline rate is on average about 5-7%, in order to remedy the crude oil downward trend, each oil field is explored on the one hand and is sought new block, beats new well and improves crude output, or beat infill well and replenish the crude output that descends, keep stable yields.On the other hand, study and adopt new technology, the new process of some raising crude outputs.For example, the chemical assistant to oilbearing stratum injection difference in functionality improves output.To the oilbearing stratum water filling, keep formation pressure.One ton of crude oil of general product will inject the water of 2-3 ton to oilbearing stratum.Each crude oil composite water cut of the whole nation reaches more than the 80-90% at present, the whole nation maximum the oil field---the average composite water cut of Daqing oil field has reached about 90%, this notion means, mix liquid measure for one ton from underground extraction, wherein moisture accounting for more than 90%, oil-containing only accounts for about 10%, can only strengthen the production fluid amount for the constant rate of production oil field, and this increases huge cost for oil production undoubtedly.
More than the underground mixing liquid measure 80-90% that releases is sewage, having only 10-20% is crude oil, through after the oil-water separation, crude oil is transported to multi-purpose station by underground gathering line, the sewage of separating re-injects into oilbearing stratum again, water injection pump plays to oilbearing stratum and constantly injects sewage and additional clear water, to keep the certain pressure effect of oil reservoir.Adopting water injection technology is the efficient ways of China's each oil field widespread usage over more than 20 year, is topmost oil production technology, for huge contribution has been made in domestic old filed stable and high yields.
About about 8000 of the existing water injection pump of whole nation onshore oil field, wherein Daqing oil field has 500, the big discharge capacity water injection pump of D300, D400, motor is 2200KW-2800KW, the water injection pump per minute is 2800 commentaries on classics, generally by 8-9 pump section, 8-9 impeller, 16-18 stator formed, and adopts high pressure (15MPa) toward oil-bearing stratum flooding, big discharge capacity per minute 300-400 cubic meter, every day is incessantly to the oilbearing stratum water filling.
Pumping unit is from the underground oil-water mixture amount that draws up, and after oil-water separation, the sewage of 80-90% re-injects oilbearing stratum again, and circulation contains the number of chemical agent, water injection pump impeller, stator seriously corroded in the sewage so repeatedly.Water injection pump impeller, stator are made with valuable non-ferrous metal stainless steel for over ten years, prevent the corrosion of sewage to impeller, stator, but stainless steel impeller, stator do not have effect to cavitation erosion, cavitation erosion can cause impeller, stator surface to produce the hole point as honeycomb, make water injection pump impeller, stator shortening in working life, cause water injection pump work undesired, discharge capacity, pressure all are subjected to very big influence, annual all have a large amount of stainless steel impellers, stator to scrap because of cavitation erosion, and the corrosion protection problem is not solved completely.In addition, water injection pump has the following disadvantages and urgent problem in the actual use in oil field:
1, highly energy-consuming, waste of energy are very serious.Very surprising with the matching used high capacity motor power consumption of water injection pump.Because of multiple model being arranged, average every 1800KW, every 24 hours power consumption, 43200 degree, annual power consumption 1576.8 ten thousand degree are by 0.50 yuan of calculating of every degree electricity, 788.4 hundred million yuan of year electricity consumptions, about about 8000 of the existing water injection pump in oil field, the whole nation, the whole nation year power consumption is 1419.9,000,000,000 degree, 709.56 hundred million yuan.Wherein Daqing oil field has about 500, Daqing oil field year power consumption be 109.5 hundred million degree, 5,400,000,000 yuan.A water injection pump power consumption is equivalent to the power consumption of 90 pumping units in oil field, and power consumption accounts for 1/3 of the whole power consumptions of Oilfield Company, and this is a huge cost that can't overcome.
2, solve this difficult problem of corrosion protection owing to stainless steel impeller, stator are not basic, in use, cavitation erosion is quite serious to stainless steel impeller, stator corrosion, causes water injection pump work undesired, discharge capacity, pressure all are subjected to very big the influence, have shortened the working life of water injection pump.
3, service cycle is short, cost of repairs height.The water injection pump price is between 250,000-350,000 yuan.Each repairing need be changed most of stainless steel impeller and stator, and every each repairing needs ten thousand yuan of repair expenses of 5-10,90,000 yuan of average every water injection pump costs of repairs.Annual by 8000 calculating, the cost of repairs is 7.2 hundred million yuan.Freight charges, every of installation fee are pressed 3000 yuan of calculating, 3000 yuan * 8000=0.24 hundred million yuan.
Summary of the invention
The purpose of this invention is to provide a kind of water injection pump that has silicon nitride impeller, stator and preparation method thereof.
Above-mentioned purpose of the present invention adopts following technological scheme to be achieved:
The present invention includes water injection pump impeller, impeller eye, impeller outlet and stator, described impeller is provided with positioning spline, it is characterized in that: described impeller and stator thereof are to be made of silicon nitride ceramics.
Furtherly, described impeller and stator thereof be by the silica flour that adds interim Bond through the base substrate impeller of pressure forming casting, stator in advance through degreasing, the silicon nitride ceramics that carries out nitrogenize again constitutes.
The making method of silicon nitride ceramics water injection pump impeller of the present invention, stator is:
1, according to different model water injection pump impeller, guide vane structure, size, in silica flour, add interim Bond earlier, adopt the isostatic compaction method, density height, casting base substrate impeller, stator carry out nitrogenize more in advance through degreasing;
2, used silica flour was generally the fine powder of 200 mesh sieves, and the purity of silica flour has a significant impact nitriding velocity;
3, silica flour biscuit impeller, the stator that will remove interim Bond is heated to 1150-1200 ℃ in nitrogen, is incubated about 1h-1.5h, makes base substrate obtain certain intensity, hardness;
4, through biscuit impeller, the stator of preliminary nitrogenize, process on metal working machine tool, to be exactly that the back Volume Changes is burnt till in nitrogenize minimum for the operational characteristic of a maximum behind the silicon nitride sintering, in ± 0.1-0.5%;
5, the impeller after the processing carries out dynamic balancing measurement.If can not reach balance, shoot off more than outer matrix section with planer, each impeller dynamic balancing measurement all will reach qualified requirement at last;
6, processing back impeller, stator base substrate carry out formal nitrogenize again and burn till, and the control nitrogen pressure is 5-10Mpa, carry out sintering in 1800 ℃-2000 ℃, and the time is 1-1.5 hour.
Because the present invention has adopted technique scheme, processing back impeller, stator can obtain very high density.Do not need machining again after burning till, that silicon nitride ceramics has is wear-resisting, corrosion-resistant, light weight, can carry out characteristics such as machining.Its hardness is more than 6 times of steel material, and weight (quality) is 40% of steel material, utilizes the present invention can realize water injection pump economize on electricity, anticorrosion, prolongs the working life of water injection pump impeller, stator, reduces the purpose of generator power consumption and maintenance expenses.
The present invention has following good effect:
1, with silicon nitride ceramics replace costing an arm and a leg, rare non-ferrous metal stainless steel, with the DF160 water injection pump is example, heavily about 9 kilograms of each impeller of water injection pump, about 6 kilograms of stator, every water injection pump uses 189 kilograms of stainless steels, existing 8000 of the whole nation is exactly 1512 tons, can save 1512 tons of stainless steels for country.
2, silicon nitride ceramics has the advantage corrosion-resistant, high temperature resistant, that hardness is high, and its hardness is stainless more than 6 times.Can prevent acid, caustic corrosion in the liquid, cavitation erosion is had good protective action, solve the hang-up of water injection pump impeller, stator cavitation erosion for many years.Prolong water injection pump 2-3 in working life doubly.
3, energy-saving and cost-reducing, economize on electricity 25-35%.The silicon nitride ceramics light weight is made impeller with silicon nitride ceramics, and weight will alleviate more than one times.Its weight only is equivalent to the 40-50% of stainless steel impeller, weight saving half, under same pressure, discharge capacity, speed conditions, its load will reduce 25-35%, output power for high capacity motor will reduce 25-35%, so just can realize the 25-35% that economizes on electricity, 8000 the motor year electricity consumptions in national oil field, 1,419 hundred million degree, 709.56 hundred million yuan.If all water injection pump motors all use silicon nitride ceramic impeller, will save 30% electric weight for the oil field, so national oil field 42,500,000,000 degree that just economized on electricity in a year, 212.86 hundred million yuan.
4, silicon nitride ceramic impeller, stator fabricating cost are lower than the stainless steel cost, and stainless steel water injection pump impeller price is 4800 yuan, and stainless steel stator price is 3500 yuan.The silicon nitride ceramic impeller price is 1800 yuan, and stator is 1500 yuan.Silicon nitride ceramic impeller, stator price will be hanged down about one times.Reduce water injection pump manufacture cost and maintenance cost.
5, water injection pump is when high speed rotating, and the centrifugal force that is produced is quite big.Impeller weight alleviates half, and this load that water injection pump is born will reduce a lot.Water injection pump bearing shell and working life are of great benefit to, can prolong water injection pump 2-3 in working life doubly.
6, reduce maintenance expenses.Adopt silicon nitride ceramics to make water injection pump impeller, stator, can reduce manufacture cost, the water injection pump price can reduce about 1/3.
7, with silicon nitride ceramic material make the water injection pump impeller, stator is simple for process.It has good mechanical processing characteristic, can satisfy every technical order of water injection pump impeller and stator, and is safe and reliable.Its hardness is similar to alloyed steel, and hardness is higher more than 6 times than stainless steel impeller, and weight saving is more than one times.
Description of drawings
Fig. 1 is the structural representation of a kind of water injection pump impeller of making according to the present invention
Fig. 2 is the left pseudosection along Figure 1A-A line
Among the figure: 1, impeller eye, 2, impeller outlet, 3, keyway, 4, impeller 5, stator.
Embodiment
Below in conjunction with embodiment in detail the present invention is described in detail:
The present invention includes water injection pump impeller, impeller eye 1, impeller outlet 2 and stator 5, described impeller is provided with positioning spline 3, it is characterized in that: described impeller and stator thereof are to be made of silicon nitride ceramics.
Furtherly, described impeller and stator thereof be by the silica flour that adds interim Bond through the base substrate impeller of pressure forming casting, stator in advance through degreasing, the silicon nitride ceramics that carries out nitrogenize again constitutes.
The making method of water injection pump impeller of the present invention, stator is:
1, according to different model water injection pump impeller, guide vane structure, size, in silica flour, add interim Bond earlier, adopt the isostatic compaction method, the density height, casting base substrate impeller, stator want elder generation through degreasing, carry out nitrogenize again;
2, used silica flour was generally the fine powder of 200 mesh sieves, and the purity of silica flour has a significant impact nitriding velocity;
3, silica flour biscuit impeller, the stator that will remove interim Bond is heated to 1150-1200 ℃ in nitrogen, is incubated about 1h-1.5h, makes base substrate obtain certain intensity, hardness;
4, through biscuit impeller, the stator of preliminary nitrogenize, process on metal working machine tool, to be exactly that the back Volume Changes is burnt till in nitrogenize minimum for the operational characteristic of a maximum behind the silicon nitride sintering, in ± 0.1-0.5%;
5, the impeller after the processing carries out dynamic balancing measurement.If can not reach balance, shoot off more than outer matrix section with planer, each impeller dynamic balancing measurement all will reach qualified requirement at last;
6, processing back impeller, stator base substrate carry out formal nitrogenize again and burn till, and consider that temperature has very big influence to the nitrogenization speed of silicon, and the control nitrogen pressure is 5-10Mpa, carry out sintering in 1800 ℃-2000 ℃, and the time is 1-1.5 hour.
Claims (3)
1, the water injection pump that has silicon nitride ceramic impeller, stator comprises water injection pump impeller, impeller eye, impeller outlet and stator, and described impeller is provided with positioning spline, it is characterized in that: described impeller and stator thereof are to be made of silicon nitride ceramics.
2, the water injection pump that has silicon nitride ceramic impeller, stator according to claim 1, it is characterized in that: described impeller and stator thereof be by the silica flour that adds interim Bond through the base substrate impeller of pressure forming casting, stator in advance through degreasing, the silicon nitride ceramics that carries out nitrogenize again constitutes.
3, the making method that has the water injection pump of silicon nitride ceramic impeller, stator according to claim 1 and 2 is characterized in that:
1, according to different model water injection pump impeller, guide vane structure, size, in silica flour, add interim Bond earlier, adopt the isostatic compaction method, casting, base substrate impeller, stator carry out nitrogenize more in advance through degreasing;
2, used silica flour was generally the fine powder of 200 mesh sieves;
3, silica flour biscuit impeller, the stator that will remove interim Bond is heated to 1150-1200 ℃ in nitrogen, is incubated about 1h-1.5h, makes base substrate obtain certain intensity, hardness;
4, through biscuit impeller, the stator of preliminary nitrogenize, process on metal working machine tool, Volume Changes is in ± 0.1-0.5% behind the silicon nitride sintering;
5, the impeller after the processing carries out dynamic balancing measurement, if can not reach balance, shoots off more than outer matrix section with planer, and each impeller dynamic balancing measurement all will reach qualified requirement at last;
6, processing back impeller, stator base substrate carry out formal nitrogenize again and burn till, and the control nitrogen pressure is 5-10Mpa, carry out sintering in 1800 ℃-2000 ℃, and the time is 1-1.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052139 CN1769714A (en) | 2004-11-07 | 2004-11-07 | Water injection pump with silicon nitride ceramic impeller and guide blade, and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052139 CN1769714A (en) | 2004-11-07 | 2004-11-07 | Water injection pump with silicon nitride ceramic impeller and guide blade, and making method thereof |
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| Publication Number | Publication Date |
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| CN1769714A true CN1769714A (en) | 2006-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410052139 Pending CN1769714A (en) | 2004-11-07 | 2004-11-07 | Water injection pump with silicon nitride ceramic impeller and guide blade, and making method thereof |
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| CN (1) | CN1769714A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032210A (en) * | 2010-12-30 | 2011-04-27 | 北京金海虹氮化硅有限公司 | Metal shaft sleeve type ceramic impeller with wing plate |
| CN104847685A (en) * | 2015-05-03 | 2015-08-19 | 陈思 | Corrosion--resisting sea water pump |
| CN107513651A (en) * | 2017-09-08 | 2017-12-26 | 燕山大学 | A kind of preparation method of titanium particle reinforced magnesium base composite material |
-
2004
- 2004-11-07 CN CN 200410052139 patent/CN1769714A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032210A (en) * | 2010-12-30 | 2011-04-27 | 北京金海虹氮化硅有限公司 | Metal shaft sleeve type ceramic impeller with wing plate |
| CN102032210B (en) * | 2010-12-30 | 2012-08-22 | 北京金海虹氮化硅有限公司 | Metal shaft sleeve type ceramic impeller with wing plate |
| CN104847685A (en) * | 2015-05-03 | 2015-08-19 | 陈思 | Corrosion--resisting sea water pump |
| CN107513651A (en) * | 2017-09-08 | 2017-12-26 | 燕山大学 | A kind of preparation method of titanium particle reinforced magnesium base composite material |
| CN107513651B (en) * | 2017-09-08 | 2019-07-26 | 燕山大学 | A kind of preparation method of titanium particle reinforced magnesium base composite material |
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