CN1320258C - Application of Nd-Fe-B in purifying steam turbine oil and oil circulating system in steam turbine set - Google Patents
Application of Nd-Fe-B in purifying steam turbine oil and oil circulating system in steam turbine set Download PDFInfo
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- CN1320258C CN1320258C CNB031113273A CN03111327A CN1320258C CN 1320258 C CN1320258 C CN 1320258C CN B031113273 A CNB031113273 A CN B031113273A CN 03111327 A CN03111327 A CN 03111327A CN 1320258 C CN1320258 C CN 1320258C
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- steam turbine
- permanent magnetic
- oil
- iron boron
- neodymium iron
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Abstract
The present invention relates to the application of neodymium, ferrum and boron and a novel circulating device for the oil systems of steam turbines, particularly the application of neodymium, ferrum and boron to purify steam turbine oil and a circulating device for the oil systems of steam turbine sets. The application is characterized in that the permanent magnetic materials of the neodymium, the ferrum and the boron are used as purifying materials for the oil system of a steam turbine and are arranged on a bottom in a bearing box, a front box or a main oil tank of the oil system of the steam turbine. The magnetic field direction of the permanent magnetic materials of the neodymium, the ferrum and the boron is in a vertical state. The device comprises the bearing box, the front box and the main oil tank of a steam turbine set, an oil inlet pipeline and an oil return pipeline connected among the main oil tank, the bearing box and the front box, and a neodymium, ferrum and boron high strength permanent magnetic purifying body. The neodymium, ferrum and boron high strength permanent magnetic purifying body is arranged on the bottom of the main oil tank and the magnetic field direction of the neodymium, ferrum and boron high strength permanent magnetic purifying body is vertical to the bottom surface of the main oil tank. The present invention can remove micro particles and foreign matter that can not be filtered by a filter screen, solves the difficult problems that people are always eager to solve, and has the advantages of good purifying performance and simple installation.
Description
Technical field: the circulation means that the present invention relates to a kind of novel turbine oil system.
Background technique: will inevitably there be the hard impurity particle of iron content in bearing box of steam turbine, main fuel tank and pipeline on its surface after welding, machining, installation and maintenance, can only utilize the method for circulation oil strain progressively to remove usually.But the required time is long, and can not stablize thoroughly and remove.Because the part particle rests in the oil reservoir flow blind angle place or sticks on the tube wall, when unit puts operating mode medium circulation oil temperature into operation when changing, these impurity also can enter bearing with lubricant oil, cause the wearing and tearing of bearing shell, axle journal.The molecule that can not see 20～60 μ m naked eyes particularly, common oil filtering unit is difficult to remove, and this part particle is continuously to the wearing and tearing of bearing shell, axle journal just, and the particle that axle journal and bearing wear produce brings further aggravation wearing and tearing in the oil again into, causes vicious circle.The research of the purified treatment of steam turbine oil at present is only limited to the mode of strainer filtering, and removing problem for minute impurities in the oil has become people and thirst for the difficult problem that solves always.The rare earth permanent-magnetic material neodymium iron boron is called as the permanent magnetism king, and it has high energy product, high-coercive force, is the best high-strength permanent magnet of present performance.The application of Nd-Fe-Bo permanent magnet material at present is only limited in the fields such as electronics, electric power, machinery, medical apparatus, is used to make magneto, loudspeaker, magnetic separator, computer disc driver, magnetic resonance imaging apparatus, watt hour meter etc.
Summary of the invention: the present invention is a steam turbine set oil system circulation means.The invention solves the problem that the hard impurity of iron content in the steam turbine oil is difficult to remove, the present invention has also opened up a new way for the application of Nd-Fe-Bo permanent magnet material.The application that neodymium iron boron of the present invention purifies steam turbine oil is that Nd-Fe-Bo permanent magnet material is used as the scavenging material of turbine oil system, be used for adsorbing the metal impurities of steam turbine oil, its usage is the bottom in the bearing housing that places it in turbine oil system, preceding case or the main fuel tank, and makes the magnetic direction of Nd-Fe-Bo permanent magnet material be vertical state.Above-mentioned Nd-Fe-Bo permanent magnet material can be the NdFeB material of following each trade mark: N35 or N38.The experiment proved that the Nd-Fe-B permanent magnet of above-mentioned two kinds of trades mark is keeping not having influence under the situation of 200mm mounting distance with equipment thermal technology element, and absorption impurity is respond well.The present invention is with iron, cobalt, nickel, chromium, stilba matter in the Nd-Fe-Bo permanent magnet material absorption steam turbine oil, do not break away from after the impurity absorption, thereby ideal purification effect, and can remove the molecule impurity that filter screen can't filtering, it has solved people and has thirsted for the difficult problem that solves always.Steam turbine set oil system circulation means of the present invention comprises the bearing housing 1 of steam turbine set, preceding case 2, main fuel tank 3, and be connected main fuel tank 3 and bearing housing 1, in-line 4 and return line 5 between the preceding case 2, the present invention also includes the high strong permanent magnetic of neodymium iron boron and purifies body 6, the high strong permanent magnetic of neodymium iron boron purifies the bottom that body 6 is arranged on main fuel tank 3, the magnetic direction of the high strong permanent magnetic purification of neodymium iron boron body 6 and the bottom surface of main fuel tank 3 are perpendicular, the high strong permanent magnetic of neodymium iron boron purifies body 6 and is and is horizontally disposed with, and be arranged in the multirow structure, the high strong permanent magnetic of neodymium iron boron that faces two row mutually purifies body 6 and staggers mutually, the head and the tail spacing m that the high strong permanent magnetic of the neodymium iron boron of every row purifies body 6 is 80～100mm, and the line space n that the high strong permanent magnetic of neodymium iron boron purifies body 6 is 80～100mm.
The high strong permanent magnetic of neodymium iron boron of the present invention purifies body 6 and the impurity of the iron content in the steam turbine machine oil, cobalt, nickel, chromium, antimony can be adsorbed downwards, makes it be deposited on the bottom of main fuel tank.Impurity be difficult for to break away from after by magnet absorption, thus purify thoroughly, efficient is high, not only shorten oil filtration time, and at every moment play the effect that purifies lubricant oil.The present invention is not subjected to the restriction of unit size, can extensive use in power generating equipment steam turbine set lubricating oil system.The present invention also can use at the rotating machinery bearing housing of other industry heavy machinery.Clean oil impurity of the present invention is rapid, can make after the overhaul or corresponding shortening cycle time of unit oil newly is installed, owing to effectively removed the impurity in the oil, has therefore prolonged the working life of steam turbine bearing and each parts.The present invention has the advantage that purifying ability is big, installation is simple, service life is long.
Description of drawings: Fig. 1 is a structural representation of the present invention, and Fig. 2 is the A-A cutaway view Amplified image of Fig. 1, and Fig. 3 is the B-B cutaway view Amplified image of Fig. 2.
Embodiment one: the application that the neodymium iron boron of present embodiment purifies steam turbine oil is that Nd-Fe-Bo permanent magnet material made bar shaped and is positioned over bottom in the main fuel tank of turbine oil system, makes the magnetic direction of Nd-Fe-Bo permanent magnet material be vertical state.Used Nd-Fe-Bo permanent magnet material is N35.Consult Fig. 1, Fig. 2, Fig. 3, the steam turbine set oil system circulation means of present embodiment is made up of the high strong permanent magnetic purification of bearing housing 1, preceding case 2, main fuel tank 3, in-line 4, return line 5, the neodymium iron boron body 6 of steam turbine set, the high strong permanent magnetic of neodymium iron boron purifies the strip structure of body 6 for long 280～300mm, wide 12～16mm, high 12～16mm, magnetic direction and its length direction of the high strong permanent magnetic purification of neodymium iron boron body 6 are perpendicular, and promptly the high strong permanent magnetic of neodymium iron boron purifies the upper and lower N utmost point and the S utmost point of being respectively of body 6 short transverses.Being arranged on the high strong permanent magnetic of the neodymium iron boron of main fuel tank 3 bottoms purifies body 6 and is and is horizontally disposed with, and be arranged in the multirow structure, the high strong permanent magnetic of neodymium iron boron that faces two row mutually purifies body 6 and staggers mutually, the head and the tail spacing m that the high strong permanent magnetic of the neodymium iron boron of every row purifies body 6 is 80～100mm, and the line space n that the high strong permanent magnetic of neodymium iron boron purifies body 6 is 80～100mm.
Embodiment two: consult Fig. 1, what present embodiment and embodiment one were different is, also is provided with the high strong permanent magnetic of neodymium iron boron and purifies body 6 in preceding case 2, and its arrangement mode is identical with embodiment one.
Embodiment three: consult Fig. 1, what present embodiment and embodiment one, two were different is, also is provided with the high strong permanent magnetic of neodymium iron boron and purifies body 6 in bearing housing 1, and its arrangement mode is identical with embodiment one.
Claims (5)
1, steam turbine set oil system circulation means, it comprises the bearing housing (1) of steam turbine set, preceding case (2), main fuel tank (3), and be connected main fuel tank (3) and bearing housing (1), in-line (4) and return line (5) between the preceding case (2), it is characterized in that it also includes the high strong permanent magnetic of neodymium iron boron and purifies body (6), the high strong permanent magnetic of neodymium iron boron purifies the bottom that body (6) is arranged on main fuel tank (3), the magnetic direction of the high strong permanent magnetic purification body of neodymium iron boron (6) and the bottom surface of main fuel tank (3) are perpendicular, the high strong permanent magnetic of neodymium iron boron purifies body (6) and is and is horizontally disposed with, and be arranged in the multirow structure, the high strong permanent magnetic of neodymium iron boron that faces two row mutually purifies body (6) and staggers mutually, the head and the tail spacing m that the high strong permanent magnetic of the neodymium iron boron of every row purifies body (6) is 80～100mm, and the line space n that the high strong permanent magnetic of neodymium iron boron purifies body (6) is 80～100mm.
2, steam turbine set oil system circulation means according to claim 1 is characterized in that also being provided with the high strong permanent magnetic of neodymium iron boron and purifies body (6) in preceding case (2).
3, steam turbine set oil system circulation means according to claim 1 is characterized in that also being provided with the high strong permanent magnetic of neodymium iron boron and purifies body (6) in bearing housing (1).
4,, it is characterized in that the high strong permanent magnetic of neodymium iron boron purifies the strip structure of body (6) for long 280～300mm, wide 12～16mm, high 12～16mm according to claim 2 or 3 described steam turbine set oil system circulation meanss.
5, steam turbine set oil system circulation means according to claim 4 is characterized in that magnetic direction and its length direction of the high strong permanent magnetic purification body of neodymium iron boron (6) is perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031113273A CN1320258C (en) | 2003-03-28 | 2003-03-28 | Application of Nd-Fe-B in purifying steam turbine oil and oil circulating system in steam turbine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031113273A CN1320258C (en) | 2003-03-28 | 2003-03-28 | Application of Nd-Fe-B in purifying steam turbine oil and oil circulating system in steam turbine set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1441150A CN1441150A (en) | 2003-09-10 |
| CN1320258C true CN1320258C (en) | 2007-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031113273A Expired - Fee Related CN1320258C (en) | 2003-03-28 | 2003-03-28 | Application of Nd-Fe-B in purifying steam turbine oil and oil circulating system in steam turbine set |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594494A (en) * | 2015-10-16 | 2017-04-26 | 熵零控股股份有限公司 | Lubrication loop fluid mechanism |
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2003
- 2003-03-28 CN CNB031113273A patent/CN1320258C/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| 机械工程手册 第3部分55页，机械工业出版社 1997 * |
| 机械工程手册 第3部分55页，机械工业出版社 1997;煤炭科学技术 付孟若等，39-41 1998 * |
| 煤炭科学技术 付孟若等，39-41 1998 * |
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| CN1441150A (en) | 2003-09-10 |
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