CN103438343B - Vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method - Google Patents
Vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method Download PDFInfo
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- CN103438343B CN103438343B CN201310367887.3A CN201310367887A CN103438343B CN 103438343 B CN103438343 B CN 103438343B CN 201310367887 A CN201310367887 A CN 201310367887A CN 103438343 B CN103438343 B CN 103438343B
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- vacuum
- valve body
- spool
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Abstract
The present invention relates to oiling apparatus field, be specifically related to a kind of vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method.The hollow cavity of vacuum oil nozzle valve core of the present invention is evacuation passageway, oil inlet passage is opened on valve body, when vacuumizing, oil inlet passage is in closed state, can not by oily suction vacuum pump pipeline, when keeping vacuum state oiling, because evacuation passageway and oiling passage deviate from mutually, also can not by oily suction vacuum pump pipeline; Vacuum oil system architecture of the present invention is simple, easy to operate.
Description
Technical field
The present invention relates to oiling apparatus field, be specifically related to a kind of vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method.
Background technique
At present, mining cone bit is in use in order to improve its life-span, need to lubricate the bearing of rock bit, mode oil being injected cone bit bearing inner chamber is adopted in prior art, vacuum oil can better avoid moisture and impurity to enter bearing cavity, first vacuum oiling device of the prior art vacuumizes bearing cavity with vacuum pump when oiling, and then under vacuum state, carry out oiling, when vacuumizing, oil residual in oil filler pipe is easily drawn into the pipeline of vacuum pump, when keeping vacuum state oiling, the oil injected easily is inhaled into vacuum pump pipeline, use the vacuum oil system of conventional fuel mouth in order to avoid the problems referred to above, be provided with vacuum control valve and oil-feed control valve in systems in which, make whole system complex structure, complex operation.Therefore, a kind of vacuum impregnating oil nozzle reasonable in design is provided to become problem demanding prompt solution.
Summary of the invention
The object of the invention is to the above-mentioned defect for prior art, a kind of vacuum impregnating oil nozzle be provided, can avoid when vacuumizing and keep vacuum state oiling time, all can not by oily suction vacuum pump pipeline.
Object of the present invention realizes by following technical measures:
The invention provides a kind of vacuum impregnating oil nozzle, comprising:
Have the valve body of hollow cavity, hollow cavity comprises the epicoele and cavity of resorption that are connected, and the internal diameter of described epicoele is greater than the internal diameter of described cavity of resorption, and the bottom of described valve body is the connecting head for connecting oil filler pipe;
Be arranged in the spool of valve body hollow cavity, described spool is hollow shape, and top is provided with the upper connection for connecting vacuum pumping device, and bottom is provided with lower contact;
Position-limit mechanism, comprises the limited part being located at spool, the limiting board being located at body top, and described limiting board offers restraining groove, and described limited part is kept out mutually with the madial wall of restraining groove;
Described valve body offers the oil inlet passage being communicated with hollow cavity, and the entrance of described oil inlet passage is located at valve body side, and described lower cavity wall is located in the outlet of described oil inlet passage.
Preferably, described vacuum impregnating oil nozzle also comprises oil sealing, and the interior edge of described oil sealing is placed on spool, and the internal chamber wall of described epicoele is fixed in the outer of described oil sealing.
Preferably, described lower contact is provided with seal ring.
Present invention also offers a kind of vacuum impregnating oil nozzle, comprising:
Have the valve body of hollow cavity, hollow cavity comprises the epicoele and cavity of resorption that are connected, and the internal diameter of described epicoele is greater than the internal diameter of described cavity of resorption, and the bottom of described valve body is the connecting head for connecting oil filler pipe;
Be arranged in the spool of valve body hollow cavity, described spool is hollow shape, and top is provided with the upper connection for connecting vacuum pumping device, and bottom is provided with lower contact;
Slip position-limit mechanism, comprise complete and can the slide rail of relative sliding and slide block, described slide rail be vertical at the top of described valve body, and described slide rail is provided with limiting stopper, and spool is fixed in described slide block one end, and the other end is along described slide rail linear slide;
Described valve body offers the oil inlet passage being communicated with hollow cavity, and the entrance of described oil inlet passage is located at valve body side, and described lower cavity wall is located in the outlet of described oil inlet passage.
Preferably, described vacuum impregnating oil nozzle also comprises oil sealing, and the interior edge of described oil sealing is placed on spool, and the internal chamber wall of described epicoele is fixed in the outer of described oil sealing.
Preferably, described lower contact is provided with seal ring.
Invention additionally provides a kind of vacuum oil system, described system comprises: vacuum pump, oil filler pipe, Lubricators and above-mentioned vacuum impregnating oil nozzle, described vacuum pump is connected with the upper connection of described vacuum impregnating oil nozzle, described oil filler pipe is connected with described vacuum impregnating oil nozzle valve body attachment, and described Lubricators is connected with the entrance of described vacuum impregnating oil nozzle oil inlet passage.
Preferably, described vacuum pump is connected with vacuum gauge.
Preferably, described oil filler pipe and described vacuum impregnating oil nozzle valve body attachment are for being threaded.
The present invention still further provides a kind of vacuum oil method, use above-mentioned vacuum oil system, before comprising the steps: a, vacuum oil, the surface of contact of the oil sealing first confirmed between valve body and spool seals intact, checks the surface of contact sealing of seal ring in spool lower contact simultaneously; B, to be connected with oil filler pipe by the connecting head of vacuum impregnating oil nozzle, and spool is adjusted to extreme lower position, the hollow cavity of spool is communicated with oil filler pipe, and the outlet of oil inlet passage is in closed state; C, the upper connection of vacuum impregnating oil nozzle to be connected with vacuum pump, Lubricators to be connected to the entrance of valve body oil inlet passage; D, unlatching vacuum pump, vacuumize, and after degree of vacuum reaches the requirement of regulation, closes vacuum pump, continues to keep vacuum state 10-15min; E, spool is adjusted to extreme higher position, the outlet of oil inlet passage is in open state, and evacuation passageway is not communicated with oil filler pipe, opens Lubricators, by vacuum impregnating oil nozzle to oiling in oil filler pipe; After f, oil level reach the requirement of regulation, close Lubricators, dismantle vacuum pump, Lubricators, oil filler pipe successively, spool is adjusted to extreme lower position, the oil in valve body oil inlet passage is discharged.
Preferably, in described steps d, degree of vacuum is-1 × 10
5~-0.97 × 10
5pa.
Preferably, the Lubricators in described step e is pressure Lubricators, and fill cup hydraulic is 965-2500Pa.
Beneficial effect of the present invention is, the hollow cavity of vacuum oil nozzle valve core of the present invention is evacuation passageway, oil inlet passage is opened on valve body, when vacuumizing, oil inlet passage is in closed state, can not by oily suction vacuum pump pipeline, when keeping vacuum state oiling, because evacuation passageway and oiling passage deviate from mutually, also can not by oily suction vacuum pump pipeline; Vacuum oil system architecture of the present invention is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of vacuum impregnating oil nozzle of the present invention.
Fig. 2 is the structural representation of the valve body of vacuum impregnating oil nozzle of the present invention.
Fig. 3 is the structural representation of the position-limit mechanism of vacuum impregnating oil nozzle of the present invention.
Fig. 4 is the structured flowchart of vacuum oil system of the present invention.
Fig. 5 is the flow chart of vacuum oil method of the present invention.
Icon illustrates:
1 valve body, 11 epicoeles,
12 cavity of resorptions, 13 oil inlet passages,
13a entrance, 13b exports,
14 connecting heads, 2 spools,
21 upper connections, 22 lower contacts,
2a vacuum passage, 3 position-limit mechanisms,
31 limited parts, 32 limiting boards,
33 restraining grooves, 4 oil sealings,
5 seal rings.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of vacuum impregnating oil nozzle, comprising:
Have the valve body of hollow cavity, hollow cavity comprises the epicoele and cavity of resorption that are connected, and the internal diameter of described epicoele is greater than the internal diameter of described cavity of resorption, and the bottom of described valve body is the connecting head for connecting oil filler pipe;
Be arranged in the spool of valve body hollow cavity, described spool is hollow shape, and top is provided with the upper connection for connecting vacuum pumping device, and bottom is provided with lower contact;
Position-limit mechanism, comprises the limited part being located at spool, the limiting board being located at body top, and described limiting board offers restraining groove, and described limited part is kept out mutually with the madial wall of restraining groove;
Described valve body offers the oil inlet passage being communicated with hollow cavity, and the entrance of described oil inlet passage is located at valve body side, and described lower cavity wall is located in the outlet of described oil inlet passage.
Present invention also offers a kind of vacuum oil system, described system comprises: vacuum pump, oil filler pipe, Lubricators and above-mentioned vacuum impregnating oil nozzle, described vacuum pump is connected with the upper connection of described vacuum impregnating oil nozzle, described oil filler pipe is connected with described vacuum impregnating oil nozzle valve body attachment, and described Lubricators is connected with the entrance of described vacuum impregnating oil nozzle oil inlet passage.
The invention provides a kind of vacuum oil method, use above-mentioned vacuum oil system, before comprising the steps: a, vacuum oil, the surface of contact of the oil sealing first confirmed between valve body and spool seals intact, checks the surface of contact sealing of seal ring in spool lower contact simultaneously; B, to be connected with oil filler pipe by the connecting head of vacuum impregnating oil nozzle, and spool is adjusted to extreme lower position, the hollow cavity of spool is communicated with oil filler pipe, and the outlet of oil inlet passage is in closed state; C, the upper connection of vacuum impregnating oil nozzle to be connected with vacuum pump, Lubricators to be connected to the entrance of valve body oil inlet passage; D, unlatching vacuum pump, vacuumize, and after degree of vacuum reaches the requirement of regulation, closes vacuum pump, continues to keep vacuum state 10-15min; E, spool is adjusted to extreme higher position, the outlet of oil inlet passage is in open state, and evacuation passageway is not communicated with oil filler pipe, opens Lubricators, by vacuum impregnating oil nozzle to oiling in oil filler pipe; After f, oil level reach the requirement of regulation, close Lubricators, dismantle vacuum pump, Lubricators, oil filler pipe successively, spool is adjusted to extreme lower position, the oil in valve body oil inlet passage is discharged.
Particularly, the hollow cavity of vacuum oil nozzle valve core provided by the invention is evacuation passageway, oil inlet passage is opened on valve body, when vacuumizing, oil inlet passage is in closed state, can not by oily suction vacuum pump pipeline, when keeping vacuum state oiling, because evacuation passageway and oiling passage deviate from mutually, also can not by oily suction vacuum pump pipeline; Vacuum oil system architecture of the present invention is simple, easy to operate.
The invention provides a kind of vacuum impregnating oil nozzle, refer to shown in Fig. 1, this vacuum impregnating oil nozzle comprises: valve body 1, spool 2 and position-limit mechanism 3.
Please refer to Fig. 1 and Fig. 2, valve body 1 has hollow cavity, described vacuum chamber comprises epicoele 11 and cavity of resorption 12, and epicoele 11 is connected with cavity of resorption 12, and the internal diameter of epicoele 11 is greater than the internal diameter of cavity of resorption 12, valve body 1 also offers the oil inlet passage 13 being communicated with hollow cavity, the entrance 13a of oil inlet passage 13 is located at valve body 1 side, and the outlet 13b of oil inlet passage 13 is located at cavity of resorption 12 inwall, and the bottom of valve body 1 is connecting head 14, in vacuum oil process, connecting head 14 is connected with the oil filler pipe of rock bit;
Please again consult Fig. 1, spool 2 is arranged in the hollow cavity of valve body 1, and spool 2 is in hollow shape, and the hollow cavity of spool 2 is evacuation passageway 2a, and spool 2 top is provided with upper connection 21, and bottom is provided with lower contact 22;
Shown in Fig. 1 and Fig. 3, position-limit mechanism 3 comprises limited part 31 and limiting board 32, limited part 31 is located at spool 2, limiting board 32 is located at valve body 1 top, limiting board 32 offers restraining groove 33, wherein, limited part 31 is kept out mutually with the madial wall of restraining groove 33, limits the scope of spool 2 axial motion.The scope of spool 2 axial motion: spool 2 upper connection 21 connects vacuum pumping device, lower contact 22 exposes to valve body 1 when spool 2 is in extreme lower position, evacuation passageway 2a is communicated with the oil filler pipe of rock bit, and the outlet 13b of oil inlet passage 13 is blocked by spool 2 and is in closed state; When spool 2 is in extreme higher position, the lower contact 22 of spool 2 moves in the cavity of resorption of valve body 1, and is positioned at the top of the outlet 13b of oil inlet passage 13, evacuation passageway 2a with disconnect being communicated with of oil filler pipe of rock bit, oil inlet passage 13 is communicated with oil filler pipe.
Shown in Fig. 1, further, vacuum impregnating oil nozzle of the present invention also comprises oil sealing 4, and the interior edge of oil sealing 4 is placed on spool 2, and the internal chamber wall of epicoele 11 is fixed in the outer of oil sealing 4;
Further, lower contact 22 is provided with seal ring 5.
Vacuum impregnating oil nozzle of the present invention, the connecting head 14 of valve body 1 is connected with the oil filler pipe of rock bit, time in vacuum, the lower contact 22 of spool 2 protrudes from valve body 1 and exposes setting, and the outlet 13b of oil inlet passage 13 is blocked by spool 2, be in closed state, vacuum pump is connected with the upper connection 21 of spool 2, so evacuation passageway 2a is communicated with the bearing cavity of mining cone bit, vacuumize, oil can be avoided like this in vacuum to suck in vaccum-pumping equipment; In oiling process, spool 2 moves, spool 2 otherwise exposed moves in valve body 1 hollow cavity in the lower contact 22 of valve body 1, be positioned at the top of the outlet 13b of oil inlet passage 13, evacuation passageway 2a is not communicated with the bearing cavity of mining cone bit, the outlet 13b of oil inlet passage 13 is in evolution state, is communicated with the bearing cavity of mining cone bit.
Persons of ordinary skill in the art may appreciate that vacuum impregnating oil nozzle of the present invention is except for carrying out, except oiling, also can be used for the vacuum oil of other equipment, as transformer, oil storage system etc. to the bearing of rock bit.
The invention provides another kind of vacuum impregnating oil nozzle, be that the structure of position-limit mechanism is different from the difference of aforesaid vacuum impregnating oil nozzle.Both repeat no more identical part herein, only describe different parts.
This position-limit mechanism is slip position-limit mechanism, and comprise complete and can the slide rail of relative sliding and slide block, described slide rail be vertical at the top of described valve body, and described slide rail is provided with limiting stopper, and spool is fixed in described slide block one end, and the other end is along described slide rail linear slide.
The invention provides a kind of vacuum oil system, as shown in Figure 4, for convenience of description, illustrate only part related to the present invention.This vacuum oil system comprises: vacuum impregnating oil nozzle 100, vacuum pump 200, oil filler pipe 300 and Lubricators 400, wherein, vacuum pump 200 is connected with the upper connection 21 of vacuum impregnating oil nozzle 100, oil filler pipe 300 is connected with the connecting head 14 of the valve body 1 of vacuum impregnating oil nozzle 100, and Lubricators 400 is connected with the entrance of the oil inlet passage 13 of vacuum impregnating oil nozzle 100.
Vacuum oil system of the present invention also comprises vacuum gauge, is connected with vacuum pump 200.
In vacuum oil system of the present invention between oil filler pipe 300 and the connecting head 14 of the valve body 1 of vacuum impregnating oil nozzle 100 for being threaded.
The invention provides a kind of vacuum oil method, utilize vacuum oil system of the present invention to carry out vacuum oil in the bearing bore of mining cone bit, refer to shown in Fig. 5, this vacuum oil method comprises the following steps:
Step S101: before vacuum oil, the surface of contact of the oil sealing first confirmed between valve body and spool seals intact, checks the surface of contact sealing of seal ring in lower contact simultaneously;
Step S102: the connecting head of vacuum impregnating oil nozzle is connected with oil filler pipe, and spool is adjusted to extreme lower position, the hollow cavity of spool is communicated with oil filler pipe, and the outlet of oil inlet passage is in closed state;
Step S103: the upper connection of vacuum impregnating oil nozzle be connected with vacuum pump, is connected to the entrance of valve body oil inlet passage by Lubricators;
Step S104: open vacuum pump, vacuumize, after degree of vacuum reaches the requirement of regulation, closes vacuum pump, continues to keep vacuum state 10-15min;
When in this step, the regulation of degree of vacuum requires, the reading of vacuum gauge is-1 × 10
5~-0.97 × 10
5pa;
Step S105: spool is adjusted to extreme higher position, the outlet of oil inlet passage is in open state, and evacuation passageway is not communicated with oil filler pipe, opens Lubricators, by vacuum impregnating oil nozzle to oiling in oil filler pipe;
In this step, Lubricators is pressure Lubricators, and fill cup hydraulic is 965-2500Pa;
Step S106: after oil level reaches the requirement of regulation, closes Lubricators, dismantles vacuum pump, Lubricators, oil filler pipe successively, spool is adjusted to extreme lower position, is discharged by the oil in valve body oil inlet passage.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a vacuum impregnating oil nozzle, is characterized in that, comprising:
Have the valve body of hollow cavity, hollow cavity comprises the epicoele and cavity of resorption that are connected, and the internal diameter of described epicoele is greater than the internal diameter of described cavity of resorption, and the bottom of described valve body is the connecting head for connecting oil filler pipe;
Be arranged in the spool of valve body hollow cavity, described spool is hollow shape, and top is provided with the upper connection for connecting vacuum pumping device, and bottom is provided with lower contact;
Position-limit mechanism, comprises the limited part being located at spool, the limiting board being located at body top, and described limiting board offers restraining groove, and described limited part is kept out mutually with the madial wall of restraining groove;
Described valve body offers the oil inlet passage being communicated with hollow cavity, and the entrance of described oil inlet passage is located at valve body side, and described lower cavity wall is located in the outlet of described oil inlet passage.
2. vacuum impregnating oil nozzle according to claim 1, is characterized in that, described vacuum impregnating oil nozzle also comprises oil sealing, and the interior edge of described oil sealing is placed on spool, and the internal chamber wall of described epicoele is fixed in the outer of described oil sealing.
3. vacuum impregnating oil nozzle according to claim 2, is characterized in that, described lower contact is provided with seal ring.
4. a vacuum impregnating oil nozzle, is characterized in that, comprising:
Have the valve body of hollow cavity, hollow cavity comprises the epicoele and cavity of resorption that are connected, and the internal diameter of described epicoele is greater than the internal diameter of described cavity of resorption, and the bottom of described valve body is the connecting head for connecting oil filler pipe;
Be arranged in the spool of valve body hollow cavity, described spool is hollow shape, and top is provided with the upper connection for connecting vacuum pumping device, and bottom is provided with lower contact;
Slip position-limit mechanism, comprise complete and can the slide rail of relative sliding and slide block, described slide rail be vertical at the top of described valve body, and described slide rail is provided with limiting stopper, and spool is fixed in described slide block one end, and the other end is along described slide rail linear slide;
Described valve body offers the oil inlet passage being communicated with hollow cavity, and the entrance of described oil inlet passage is located at valve body side, and described lower cavity wall is located in the outlet of described oil inlet passage.
5. vacuum impregnating oil nozzle according to claim 4, is characterized in that, described vacuum impregnating oil nozzle also comprises oil sealing, and the interior edge of described oil sealing is placed on spool, and the internal chamber wall of described epicoele is fixed in the outer of described oil sealing.
6. vacuum impregnating oil nozzle according to claim 5, is characterized in that, described lower contact is provided with seal ring.
7. a vacuum oil system, it is characterized in that, described system comprises: the vacuum impregnating oil nozzle described in vacuum pump, oil filler pipe, Lubricators and claim 1 or 4, described vacuum pump is connected with the upper connection of described vacuum impregnating oil nozzle, described oil filler pipe is connected with described vacuum impregnating oil nozzle valve body attachment, and described Lubricators is connected with the entrance of described vacuum impregnating oil nozzle oil inlet passage.
8. vacuum oil system according to claim 7, is characterized in that, described vacuum pump is connected with vacuum gauge.
9. vacuum oil system according to claim 7, is characterized in that, described oil filler pipe and described vacuum impregnating oil nozzle valve body attachment are for being threaded.
10. a vacuum oil method, it is characterized in that, use the vacuum oil system of claim 7, before comprising the steps: a, vacuum oil, the surface of contact of the oil sealing first confirmed between valve body and spool seals intact, checks the surface of contact sealing of seal ring in spool lower contact simultaneously; B, to be connected with oil filler pipe by the connecting head of vacuum impregnating oil nozzle, and spool is adjusted to extreme lower position, the hollow cavity of spool is communicated with oil filler pipe, and the outlet of oil inlet passage is in closed state; C, the upper connection of vacuum impregnating oil nozzle to be connected with vacuum pump, Lubricators to be connected to the entrance of valve body oil inlet passage; D, unlatching vacuum pump, vacuumize, and after degree of vacuum reaches the requirement of regulation, closes vacuum pump, continues to keep vacuum state 10-15min; E, spool is adjusted to extreme higher position, the outlet of oil inlet passage is in open state, and evacuation passageway is not communicated with oil filler pipe, opens Lubricators, by vacuum impregnating oil nozzle to oiling in oil filler pipe; After f, oil level reach the requirement of regulation, close Lubricators, dismantle vacuum pump, Lubricators, oil filler pipe successively, spool is adjusted to extreme lower position, the oil in valve body oil inlet passage is discharged.
11. vacuum oil methods according to claim 10, is characterized in that, in described steps d, degree of vacuum reaches the reading of vacuum gauge when regulation requires is-1 × 105 ~-0.97 × 105Pa.
12. vacuum oil methods according to claim 10, it is characterized in that, the Lubricators in described step e is pressure Lubricators, fill cup hydraulic is 965-2500Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367887.3A CN103438343B (en) | 2013-08-22 | 2013-08-22 | Vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367887.3A CN103438343B (en) | 2013-08-22 | 2013-08-22 | Vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method |
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| Publication Number | Publication Date |
|---|---|
| CN103438343A CN103438343A (en) | 2013-12-11 |
| CN103438343B true CN103438343B (en) | 2016-04-13 |
Family
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|---|---|---|---|
| CN201310367887.3A Expired - Fee Related CN103438343B (en) | 2013-08-22 | 2013-08-22 | Vacuum impregnating oil nozzle, vacuum oil system and vacuum oil method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332657A (en) * | 2015-12-08 | 2016-02-17 | 苏州新锐合金工具股份有限公司 | Mining tri-cone rock bit capable of conducting vacuumized oil injection |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035004U (en) * | 1988-02-13 | 1989-03-29 | 中国人民解放军87456部队 | Oiling machine |
| CN2529036Y (en) * | 2002-03-19 | 2003-01-01 | 尹连成 | Change valve for multi-pipe water and gas supply |
| CN100335807C (en) * | 2004-02-23 | 2007-09-05 | 日本电产株式会社 | Fluid dispensation method |
| CN201663034U (en) * | 2009-11-12 | 2010-12-01 | 吉林省电力有限公司白山供电公司 | Sleeve vacuum oiling device |
| CN201708008U (en) * | 2010-06-17 | 2011-01-12 | 中国石化集团胜利石油管理局电力管理总公司 | Vacuum oiling device |
| CN101950931A (en) * | 2010-08-25 | 2011-01-19 | 河南省电力公司郑州供电公司 | Field dehumidifying method of transformer 110KV capacitive bushing |
| CN203585789U (en) * | 2013-08-22 | 2014-05-07 | 湖北鸣利来冶金机械科技有限公司 | Vacuum oil injecting nozzle and vacuum oil injecting system |
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2013
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Address after: 438000 No. 188 nanhu road, Nanhu Industrial Park, Hubei, Huanggang Applicant after: HUBEI MILALION METALLURGICAL MACHINERY CO., LTD. Address before: 438000 No. 188 nanhu road, Nanhu Industrial Park, Hubei, Huanggang Applicant before: Hubei Milalion Metallurgical Machinery Technology Co., Ltd. |
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