CN202955181U - Electric submersible heavy oil screw pump series-type planetary speed reducer - Google Patents
Electric submersible heavy oil screw pump series-type planetary speed reducer Download PDFInfo
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- CN202955181U CN202955181U CN 201220401151 CN201220401151U CN202955181U CN 202955181 U CN202955181 U CN 202955181U CN 201220401151 CN201220401151 CN 201220401151 CN 201220401151 U CN201220401151 U CN 201220401151U CN 202955181 U CN202955181 U CN 202955181U
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 34
- 239000000295 fuel oil Substances 0.000 title abstract 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000005611 electricity Effects 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 230000009189 diving Effects 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 8
- 239000000969 carrier Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model discloses an electric submersible heavy oil screw pump series-type planetary speed reducer. The electric submersible heavy oil screw pump series-type planetary speed reducer comprises a box body, wherein a solar wheel shaft and more than two groups of planetary wheel transmission components arranged along the axial direction of the solar wheel shaft are arranged in the box body, each planetary wheel transmission component comprises a solar wheel fixedly arranged on the solar wheel shaft, an inner gear fixedly arranged on the box body, a planetary wheel arranged between the solar wheel and the inner gear, and a planetary wheel frame used for supporting the planetary wheel, the planetary wheel frames of two adjacent planetary wheel transmission components are connected through a planetary wheel frame connector, and a speed reducer output shaft is arranged at the top end of the planetary wheel frame located at the topmost end. The electric submersible heavy oil screw pump series-type planetary speed reducer is capable of achieving torsion power transmission commonly shared by a plurality of planetary gear trains , enables the torsion power to be loaded evenly, and prolongs the service life.
Description
Technical field
The utility model involvement aspect, to the retarder of petroleum industry, relates in particular to the latent viscous crude screw pump string data planetary reducer of electricity.
Background technique
Along with domestic many oil gas fields enter the exploitation middle and later periods, the shared ratio of mechanical oil recovery is increasing.Domestic petroleum enterprise is in order further to improve oil production rate and manufacturing efficiency, saving ground space, Cost reduction, mostly adopt the submersible screw pumping unit to replace traditional beam pumping unit recover petroleum, the situation that particularly for offshore oil and gas field extended reach well and horizontal well, can't place traditional pumping unit, the electric oil submerged screw pump oil production system is widely used.The advantage of screw pump is to process high viscosity and the high crude oil containing sand, and along with viscosity increases, and screw pump must effectively work under the slow-speed of revolution, and its best rotational speed is generally in the 100-500r/min left and right.But the huge speed reducer that in down-hole, due to the diameter space restriction, can not use again ground to drive.Therefore studying electric oil submerged screw pump, at first to need the problem solved be exactly to try every possible means the rotating speed of screw pump is lowered, to meet the requirement of the screw pump slow-speed of revolution, high pulling torque.Because screw pump is worked under deep-well, screw pump exhaust end and suction side hydraulic pressure have produced the thrust load of tens tons, and be accompanied by powerful impact force in oil recovery process, screw pump is worked in high viscosity and high sand containing crude oil simultaneously, temperature is high especially, environmental conditions is very severe, and the screw pump retarder faces huge test.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of and can realize that a plurality of planetary gear train are shared jointly and reverse the power transmission, makes to reverse power and all carry the electricity that the extend working life viscous crude screw pump string data planetary reducer of diving.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of electricity viscous crude screw pump string data planetary reducer of diving, comprise casing, the planet gear transmission assembly more than two groups that is provided with sun wheel shaft in described casing and axially sets up separately along described sun wheel shaft, described planet gear transmission assembly comprises the sun gear be fixedly arranged on sun wheel shaft, be fixedly arranged on the ring gear on described casing, be located at the planet wheel between sun gear and ring gear, and for supporting the planetary wheel carrier of planet wheel, planetary wheel carrier in two adjacent groups planet gear transmission assembly connects by a planetary wheel carrier link, the top that is positioned at the top line star wheel frame is made as reducer output shaft.
Described sun wheel shaft is elastic axis.
When described planet gear transmission assembly is two groups, if the moment of torsion of the sun gear transmission of close retarder input end is M1, the moment of torsion of the sun gear transmission of close retarder output terminal is M2, the torsional stiffness of the part of described sun wheel shaft between two sun gears is C12, the torsional stiffness of described planetary wheel carrier link is B12, and the velocity ratio of planet gear transmission assembly is i; Work as C12:B12=1:i
2The time, M1=M2.
When described planet gear transmission assembly is three groups, from the retarder input end to the retarder output terminal, if the moment of torsion of each sun gear transmission is followed successively by M1, M2, M3, between adjacent two sun gears, the torsional stiffness of sun wheel shaft is followed successively by C12, C23, between adjacent two planetary wheel carriers, the torsional stiffness of planetary wheel carrier link is followed successively by B12, B23, the velocity ratio of planet gear transmission assembly is i, works as C12:B12=2:i
2, and C23:B23=1:2i
2The time, M1=M2=M3.
When described planet gear transmission assembly is four groups, from the retarder input end to the retarder output terminal, if the moment of torsion of each sun gear transmission is followed successively by M1, M2, M3, M4, between adjacent two sun gears, the torsional stiffness of sun wheel shaft is followed successively by C12, C23, C34, between adjacent two planetary wheel carriers, the torsional stiffness of planetary wheel carrier link is followed successively by B12, B23, B34, the velocity ratio of planet gear transmission assembly is i, works as C12:B12=3:i
2, and C23:B23=1:i
2, and C34:B34=1:3i
2The time, M1=M2=M3=M4.
Each is organized between planet wheel in the planet gear transmission assembly and planetary wheel carrier and is provided with angular contact bearing.
Described reducer output shaft is connected with thrust and all carries on a shoulder pole device, described thrust is all carried on a shoulder pole device and is comprised housing, thrust is all carried on a shoulder pole output shaft, radial bearing and on average share the thrust bearing assembly of end thrust more than two, described housing is connected on described casing, described thrust is all carried on a shoulder pole output shaft and is supported in housing by radial bearing, and be connected with described reducer output shaft by the first coupling, described two above thrust bearing assemblies are set in continuously vertically thrust and all carry on a shoulder pole on output shaft, and an end pushes in thrust and all carries on a shoulder pole on the thrust shaft shoulder of output shaft, the other end pushes on housing, described thrust bearing assembly comprises bearing support, thrust-bearing, all carry spring and spring seat, described bearing sleeve is loaded on thrust and all carries on a shoulder pole on output shaft, described spring socket sleeve is loaded in housing, described thrust-bearing upper end pushes on bearing support, the thrust-bearing lower end pushes on spring seat by all carrying spring.
Two mutual butts of bearing support of adjacent thrust bearing assembly, be positioned at bearing support topmost and push in the lower end of the thrust shaft shoulder, two mutual butts of spring seat of adjacent thrust bearing assembly, and the spring seat be positioned at bottom pushes on housing.
Described thrust is all carried on a shoulder pole on output shaft and is equiped with for thrust bearing assembly being loaded to the thrust pretension assembly of axial pre tightening force, described thrust pretension assembly comprises pretension seat, preloading spring and pretension thrust-bearing, described pretension cover for seat is loaded in housing, and be positioned at thrust shaft shoulder top, described pretension thrust-bearing lower end pushes in the upper end of the thrust shaft shoulder, and pretension thrust-bearing upper end pushes on the pretension seat by preloading spring.
Described housing comprises sleeve and is divided into the connecting sleeve at described sleeve two ends, described radial bearing is provided with two, the inner ring of two radial bearings is supported on thrust and all carries on a shoulder pole on output shaft, the outer ring of two radial bearings is supported on respectively on a connecting sleeve, and described thrust bearing assembly and thrust pretension assembly are between two radial bearings.
Compared with prior art, the utility model has the advantage of:
The electricity of the present utility model viscous crude screw pump string data planetary reducer of diving, by planet gear transmission assembly more than two groups being set and with same sun wheel shaft transmission, can realize that a plurality of planetary gear train are shared jointly and reverse the power transmission, make torsion power all carry, thereby can greatly improve the torsion power transmission capacity of retarder, the working life of prolonged deceleration device.Each is organized between planet wheel in the planet gear transmission assembly and planetary wheel carrier and is provided with angular contact bearing, substituted the wear-resistant pad adopted in existing general planetary gear train with this angular contact bearing, improved on the one hand its axial carrying capacity, reduce the deflection that planet wheel produces under powerful responsive to axial force, improve its smoothness of operation, reduce on the other hand the generation of abrasive dust, avoided the wearing and tearing of the driving parts such as abrasive dust aggravation gear, bearing.The sun wheel shaft lower end is by coupling connection reducer input shaft, coupling is crown gear coupling, the diaxon relative displacement that adopts crown gear coupling can effective compensation to be caused by factors such as alignment error, axial impact, part deformations, thereby make that reducer structure is compact, utilization efficiency is high, bearing and gear not easy to wear, long service life.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structure for amplifying schematic diagram of planetary gear train in the utility model.
Fig. 3 is the structure for amplifying schematic diagram that in the utility model, thrust is all carried on a shoulder pole device.
In figure, each label means:
1, casing; 2, sun wheel shaft; 3, planetary wheel carrier link; 4, reducer output shaft; 5, the second coupling; 6, reducer input shaft; 7, thrust is all carried on a shoulder pole device; 8, the first coupling; 21, sun gear; 22, planet wheel; 23, ring gear; 24, planetary wheel carrier; 25, angular contact bearing; 71, housing; 72, thrust is all carried on a shoulder pole output shaft; 73, radial bearing; 74, thrust bearing assembly; 75, thrust pretension assembly; 711, sleeve; 712, connecting sleeve; 721, the thrust shaft shoulder; 741, bearing support; 742, thrust-bearing; 743, all carry spring; 744, spring seat; 751, pretension seat; 752, preloading spring; 753, pretension thrust-bearing.
Embodiment
Fig. 1 to Fig. 3 shows the latent viscous crude screw pump string data planetary reducer embodiment of a kind of electricity of the present utility model, this retarder comprises casing 1, the planet gear transmission assembly more than two groups that is provided with sun wheel shaft 2 in casing 1 and axially sets up separately along sun wheel shaft 2, the planet gear transmission assembly comprises the sun gear 21 be fixedly arranged on sun wheel shaft 2, be fixedly arranged on the ring gear 23 on casing 1, be located at the planet wheel 22 between sun gear 21 and ring gear 23, and the planetary wheel carrier 24 for supporting planet wheel 22, planetary wheel carrier 24 in two adjacent groups planet gear transmission assembly connects by a planetary wheel carrier link 3, the top that is positioned at top line star wheel frame 24 is made as reducer output shaft 4, in the present embodiment, the planet gear transmission assembly is provided with two groups, by planet gear transmission assembly more than two groups or two groups being set and with same sun wheel shaft 2 transmissions, can realize that a plurality of planetary gear train are shared jointly and reverse the power transmission, make torsion power all carry, thereby can greatly improve the torsion power transmission capacity of retarder, the working life of prolonged deceleration device.
In the present embodiment, sun wheel shaft 2 is elastic axis, if the moment of torsion that the sun gear of close retarder input end 21 transmits is M1, the moment of torsion that the sun gear 21 of close retarder output terminal transmits is M2, the torsional stiffness of the part of sun wheel shaft 2 between two sun gears 21 is C12, the torsional stiffness of planetary wheel carrier link 3 is B12, and the velocity ratio of planet gear transmission assembly is i; Work as C12:B12=1:i
2The time, M1=M2.
In the present embodiment, each is organized between planet wheel 22 in the planet gear transmission assembly and planetary wheel carrier 24 and is provided with angular contact bearing 25, substituted the wear-resistant pad adopted in existing general planetary gear train with this angular contact bearing 25, improved on the one hand its axial carrying capacity, reduce the deflection that planet wheel 22 produces under powerful responsive to axial force, improve its smoothness of operation, reduced on the other hand the generation of abrasive dust, avoid the wearing and tearing of the driving parts such as abrasive dust aggravation gear, bearing.
In the present embodiment, reducer output shaft 4 is connected with thrust and all carries on a shoulder pole device 7, thrust is all carried on a shoulder pole device 7 and is comprised housing 71, thrust is all carried on a shoulder pole output shaft 72, radial bearing 73 and on average share the thrust bearing assembly 74 of end thrust more than two, housing 71 is connected on casing 1, thrust is all carried on a shoulder pole output shaft 72 and is supported in housing 71 by radial bearing 73, and be connected with reducer output shaft 4 by the first coupling 8, two above thrust bearing assemblies 74 are set in continuously vertically thrust and all carry on a shoulder pole on output shaft 72, and an end pushes in thrust and all carries on a shoulder pole on the thrust shaft shoulder 721 of output shaft 72, the other end pushes on housing 71, the thrust bearing assembly 74 of the present embodiment is provided with two groups, on average share when electricity is dived the work of viscous crude screw pump end thrust and the axial impact produced by these two groups of thrust bearing assemblies 74, make stressing conditions and the abrasion condition of two groups of thrust bearing assemblies 74 basically identical, avoid single group thrust bearing assembly 74 can't work because of the stressed excessive or frayed whole electricity viscous crude screw pump of diving that too seriously causes, thereby can greatly improve the working life of retarder, and can improve operation stability and the working efficiency of the latent viscous crude screw pump of electricity.Thrust bearing assembly 74 comprises bearing support 741, thrust-bearing 742, all carry spring 743 and spring seat 744, bearing support 741 is set in thrust and all carries on a shoulder pole on output shaft 72, spring seat 744 is set in housing 71, thrust-bearing 742 upper ends push on bearing support 741, thrust-bearing 742 lower ends push on spring seat 744 by all carrying spring 743, the mutual butt of two bearing supports 741 of adjacent thrust bearing assembly 74, being positioned at bearing support 741 topmost pushes in the lower end of the thrust shaft shoulder 721, the mutual butt of two spring seats 744 of adjacent thrust bearing assembly 74, the spring seat 744 be positioned at bottom pushes on housing 71.Can take full advantage of the homogenizing ability that the elastic buffer ability of all carrying spring 743 makes thrust all carry on a shoulder pole 7 pairs of thrust loads of device improves significantly, stressing conditions and the abrasion condition of each thrust bearing assembly 74 are almost identical, thereby stopped the possibility of appearance " short-board effect " fully, further extend the working life of each thrust bearing assembly 74, strengthened the stability of retarder operation.
In the present embodiment, thrust is all carried on a shoulder pole on output shaft 72 and is equiped with for thrust bearing assembly 74 being loaded to the thrust pretension assembly 75 of axial pre tightening force, this thrust pretension assembly 75 comprises pretension seat 751, preloading spring 752 and pretension thrust-bearing 753, pretension seat 751 is set in housing 71, and be positioned at the thrust shaft shoulder 721 tops, pretension thrust-bearing 753 lower ends push in the upper end of the thrust shaft shoulder 721, and pretension thrust-bearing 753 upper ends push on pretension seat 751 by preloading spring 752.By thrust pretension assembly 75 is set, can when assembling, just to thrust bearing assembly 74, load certain axial pre tightening force, and make thrust all carry on a shoulder pole that output shaft 72 is subject to end thrust and while impacting, the relative displacement produced between two adjacent groups thrust bearing assembly 74 reduces, thereby further reduce the wearing and tearing that thrust bearing assembly 74 is subject to, improve the bearing capacity that thrust is all carried on a shoulder pole device 7.
In the present embodiment, housing 71 comprises sleeve 711 and is divided into the connecting sleeve 712 at sleeve 711 two ends, radial bearing 73 is provided with two, the inner ring of two radial bearings 73 is supported on thrust and all carries on a shoulder pole on output shaft 72, the outer ring of two radial bearings 73 is supported on respectively on a connecting sleeve 712, and thrust bearing assembly 74 and thrust pretension assembly 75 are between two radial bearings 73.
In the present embodiment, sun wheel shaft 2 lower ends are by the second coupling 5 connection reducer input shafts 6, the first coupling 8 and the second coupling 5 are crown gear coupling, the diaxon relative displacement that adopts crown gear coupling can effective compensation to be caused by factors such as alignment error, axial impact, part deformations, thereby make that reducer structure is compact, utilization efficiency is high, bearing and gear not easy to wear, long service life.
In other embodiments, the planet gear transmission assembly also can be made as three groups, four groups or more groups.
When the planet gear transmission assembly is three groups, from the retarder input end to the retarder output terminal, if the moment of torsion that each sun gear 21 transmits is followed successively by M1, M2, M3, between adjacent two sun gears 21, the torsional stiffness of sun wheel shaft 2 is followed successively by C12, C23, between adjacent two planetary wheel carriers 24, the torsional stiffness of planetary wheel carrier link 3 is followed successively by B12, B23, the velocity ratio of planet gear transmission assembly is i, works as C12:B12=2:i
2, and C23:B23=1:2i
2The time, M1=M2=M3.
When the planet gear transmission assembly is four groups, from the retarder input end to the retarder output terminal, if the moment of torsion that each sun gear 21 transmits is followed successively by M1, M2, M3, M4, between adjacent two sun gears 21, the torsional stiffness of sun wheel shaft 2 is followed successively by C12, C23, C34, between adjacent two planetary wheel carriers 24, the torsional stiffness of planetary wheel carrier link 3 is followed successively by B12, B23, B34, the velocity ratio of planet gear transmission assembly is i, works as C12:B12=3:i
2, and C23:B23=1:i
2, and C34:B34=1:3i
2The time, M1=M2=M3=M4.
Although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model.Any those of ordinary skill in the art, in the situation that do not break away from the technical solutions of the utility model scope, all can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model,, all should drop in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the utility model technical spirit.
Claims (7)
1. the electricity viscous crude screw pump string data planetary reducer of diving, comprise casing (1), it is characterized in that: the planet gear transmission assembly more than two groups that is provided with sun wheel shaft (2) in described casing (1) and axially sets up separately along described sun wheel shaft (2), described planet gear transmission assembly comprises the sun gear (21) be fixedly arranged on sun wheel shaft (2), be fixedly arranged on the ring gear (23) on described casing (1), be located at the planet wheel (22) between sun gear (21) and ring gear (23), and the planetary wheel carrier (24) for supporting planet wheel (22), planetary wheel carrier (24) in two adjacent groups planet gear transmission assembly connects by a planetary wheel carrier link (3), the top that is positioned at top line star wheel frame (24) is made as reducer output shaft (4).
2. the electricity according to claim 1 viscous crude screw pump string data planetary reducer of diving, it is characterized in that: described sun wheel shaft (2) is elastic axis.
3. the electricity according to claim 1 and 2 viscous crude screw pump string data planetary reducer of diving is characterized in that: each is organized between planet wheel (22) in the planet gear transmission assembly and planetary wheel carrier (24) and is provided with angular contact bearing (25).
4. the electricity according to claim 3 viscous crude screw pump string data planetary reducer of diving, it is characterized in that: described reducer output shaft (4) is connected with thrust and all carries on a shoulder pole device (7), described thrust is all carried on a shoulder pole device (7) and is comprised housing (71), thrust is all carried on a shoulder pole output shaft (72), radial bearing (73) and on average share the thrust bearing assembly (74) of end thrust more than two, described housing (71) is connected on described casing (1), described thrust is all carried on a shoulder pole output shaft (72) and is supported in housing (71) by radial bearing (73), and be connected with described reducer output shaft (4) by the first coupling (8), described two above thrust bearing assemblies (74) are set in continuously vertically thrust and all carry on a shoulder pole on output shaft (72), and an end pushes in thrust and all carries on a shoulder pole on the thrust shaft shoulder (721) of output shaft (72), the other end pushes on housing (71), described thrust bearing assembly (74) comprises bearing support (741), thrust-bearing (742), all carry spring (743) and spring seat (744), described bearing support (741) is set in thrust and all carries on a shoulder pole on output shaft (72), described spring seat (744) is set in housing (71), described thrust-bearing (742) upper end pushes on bearing support (741), thrust-bearing (742) lower end pushes on spring seat (744) by all carrying spring (743).
5. the electricity according to claim 4 viscous crude screw pump string data planetary reducer of diving, it is characterized in that: two bearing supports (741) of adjacent thrust bearing assembly (74) are butt mutually, being positioned at bearing support (741) topmost pushes in the lower end of the thrust shaft shoulder (721), two spring seats (744) of adjacent thrust bearing assembly (74) are butt mutually, and the spring seat (744) be positioned at bottom pushes on housing (71).
6. the electricity according to claim 5 viscous crude screw pump string data planetary reducer of diving, it is characterized in that: described thrust is all carried on a shoulder pole on output shaft (72) and is equiped with for thrust bearing assembly (74) being loaded to the thrust pretension assembly (75) of axial pre tightening force, described thrust pretension assembly (75) comprises pretension seat (751), preloading spring (752) and pretension thrust-bearing (753), described pretension seat (751) is set in housing (71), and be positioned at the thrust shaft shoulder (721) top, described pretension thrust-bearing (753) lower end pushes in the upper end of the thrust shaft shoulder (721), pretension thrust-bearing (753) upper end pushes on pretension seat (751) by preloading spring (752).
7. the electricity according to claim 6 viscous crude screw pump string data planetary reducer of diving, it is characterized in that: described housing (71) comprises sleeve (711) and is divided into the connecting sleeve (712) at described sleeve (711) two ends, described radial bearing (73) is provided with two, the inner ring of two radial bearings (73) is supported on thrust and all carries on a shoulder pole on output shaft (72), it is upper that the outer ring of two radial bearings (73) is supported on respectively a connecting sleeve (712), and described thrust bearing assembly (74) and thrust pretension assembly (75) are positioned between two radial bearings (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220401151 CN202955181U (en) | 2012-08-14 | 2012-08-14 | Electric submersible heavy oil screw pump series-type planetary speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220401151 CN202955181U (en) | 2012-08-14 | 2012-08-14 | Electric submersible heavy oil screw pump series-type planetary speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN202955181U true CN202955181U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220401151 Expired - Fee Related CN202955181U (en) | 2012-08-14 | 2012-08-14 | Electric submersible heavy oil screw pump series-type planetary speed reducer |
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| Country | Link |
|---|---|
| CN (1) | CN202955181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788116A (en) * | 2012-08-14 | 2012-11-21 | 长沙中传机械有限公司 | String-type planetary reducer for electric submersible thickened oil screw pump |
| CN115451087A (en) * | 2022-09-06 | 2022-12-09 | 中国船舶集团有限公司第七〇三研究所 | Vertical low-leakage planetary gear transmission case and driving method |
-
2012
- 2012-08-14 CN CN 201220401151 patent/CN202955181U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788116A (en) * | 2012-08-14 | 2012-11-21 | 长沙中传机械有限公司 | String-type planetary reducer for electric submersible thickened oil screw pump |
| CN102788116B (en) * | 2012-08-14 | 2015-11-18 | 长沙中传机械有限公司 | The latent viscous crude screw pump string data planetary reducer of a kind of electricity |
| CN115451087A (en) * | 2022-09-06 | 2022-12-09 | 中国船舶集团有限公司第七〇三研究所 | Vertical low-leakage planetary gear transmission case and driving method |
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Owner name: CHANGSHA YUHUA DISTRICT Free format text: FORMER OWNER: CHANGSHA ZHONGCHUAN TRANSMISSION MACHINERY CO., LTD. Effective date: 20150520 |
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Free format text: CORRECT: ADDRESS; FROM: 410200 CHANGSHA, HUNAN PROVINCE TO: 410000 CHANGSHA, HUNAN PROVINCE |
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Effective date of registration: 20150520 Address after: 410000 No. 248 middle Guo Liang Road, Wangcheng District, Hunan, Changsha Patentee after: CHANGSHA ZHONGCHUAN TRANSMISSION CO., LTD. Address before: 410200 science and technology office, 521 mailbox, Changsha, Hunan Patentee before: AVIC Changsha Zhongchuan Transmission Machinery Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20200814 |
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| CF01 | Termination of patent right due to non-payment of annual fee |