CN105090346A - Adapter connector of walking beam auxiliary balancing device of pumping unit - Google Patents
Adapter connector of walking beam auxiliary balancing device of pumping unit Download PDFInfo
- Publication number
- CN105090346A CN105090346A CN201510516721.2A CN201510516721A CN105090346A CN 105090346 A CN105090346 A CN 105090346A CN 201510516721 A CN201510516721 A CN 201510516721A CN 105090346 A CN105090346 A CN 105090346A
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- China
- Prior art keywords
- walking beam
- crossover sub
- end plate
- auxiliary balance
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005086 pumping Methods 0.000 title claims abstract description 44
- 241001023788 Cyttus traversi Species 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manipulator (AREA)
Abstract
The invention discloses an adapter connector of a walking beam auxiliary balancing device of a pumping unit. The walking beam tail portion is sleeved with a shell, and the shell comprises a top plate and two side plates; the top plate and the two side plates are fixedly connected with an adapter connector end plate, an end plate through hole corresponding to a through hole of the walking beam tail portion is formed in the adapter connector end plate, and a compressing device is arranged in the end plate through hole; installing fastening strips are fixedly arranged on the adapter connector end plate; and each installing fastening strip is provided with a plurality of threaded holes used for being connected with the auxiliary balancing device. The adapter connector of the walking beam auxiliary balancing device of the pumping unit has the beneficial effects that on the premise that the structure of an existing pumping unit is not changed, no holes are formed in a walking beam, and no welding operation is conducted on the walking beam, the requirement for installing the auxiliary balancing device at the walking beam tail portion can be achieved. In addition, the connection is reliable, detachment and maintenance are convenient, and reutilization can be achieved.
Description
Technical field
The present invention relates to pumping unit field, particularly a kind of walking beam on pumping units auxiliary balance device crossover sub.
Background technique
At present, beam pumping unit is in upper and lower stroke movement process, the change that the load change of polished rod can directly cause motor power (output) to export, electric energy is slatterned with the form of heat loss to a great extent, therefore being improved the balanced ratio of pumping unit in prior art by various mode, is the key of oil pump energy-saving technology.
In order to reach the object of oil pump energy-saving, the overwhelming majority is that install auxiliary balance additional, especially walking beam assists dynamic poise device, reaches the object of balance of well pumping unit in the mechanism such as crank, walking beam consistent with polished rod pumping campaign.The installation method that walking beam on pumping units assists dynamic poise device traditional be by walking beam and balanced controls by welding, the mode such as bolton installs, need to carry out perforate and weld job on walking beam, change the structure of original walking beam, do not meet the requirement as far as possible not changing Pumping Unit.And once after installing, dismounting difficulty, brings extreme difficulties to the maintenance of auxiliary balance device.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of walking beam on pumping units auxiliary balance device crossover sub, can under the condition not changing pumping unit original structure, need not perforate on walking beam, any welding operation is not carried out to walking beam, just can realize walking beam afterbody and needs are installed, auxiliary balance device is reliably connected with walking beam afterbody, and is easy to remove and repair, can reuse.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of walking beam on pumping units auxiliary balance device crossover sub, housing is socketed on walking beam afterbody, housing comprises a top board and two side plates, a top board is fixedly connected with crossover sub end plate with two side plates, crossover sub end plate is provided with the end plate through hole corresponding with the walking beam afterbody through hole of walking beam afterbody, in end plate through hole, is provided with hold down gag;
Crossover sub end plate is also installed with installation bracket, bracket is installed and is provided with multiple tapped hole for being connected with auxiliary balance device.
At the top of housing, be also provided with the auxiliary balance locating stud for locating auxiliary balance device near the position of crossover sub end plate.
In described hold down gag, outer plate is connected with inner clip plate by hold down gag lock bolt, and the length of outer plate and inner clip plate is greater than the internal diameter of end plate through hole, and the width of inner clip plate is less than the internal diameter of end plate through hole.
Inner clip plate is provided with the positioning boss for being placed in walking beam afterbody through hole.
Also be provided with multiple walking beam afterbody positioning hole corresponding with the walking beam afterbody locating stud on walking beam afterbody at the top board of housing, walking beam afterbody positioning hole is slotted hole.
Crossover sub end plate is also provided with the horizontal location hole corresponding with the walking beam afterbody horizontal pin of walking beam afterbody.
Also controlling device is provided with between two side plates of housing;
In controlling device, load body two ends are connected with two side plates of housing by controlling device clamping bolt, and load body is provided with horizontal adjusting bolt and vertical adjusting bolt.
After controlling device is installed, horizontal adjusting bolt withstands the walking beam afterbody free bearing of walking beam afterbody, and vertical adjusting bolt withstands the bottom surface of walking beam afterbody.
Multiple stiffening rib is provided with between crossover sub end plate and the side plate of housing.
One end of auxiliary balance device is fixedly connected with installation bracket;
Described auxiliary balance device comprise common balancer weight,
Down eccentric barbell balancer weight,
Pendulum bell formula balancer weight,
The rear horse head of double-horsehead pumping unit,
Horse head counterweight, horse head counterweight is connected with hydraulic cylinder type counterweight,
Or slide block swing type counterweight.
A kind of walking beam on pumping units auxiliary balance device crossover sub provided by the invention, can not change the structure of existing pumping unit, not perforate on walking beam, not carry out welding operation to walking beam, just can realize the needs that walking beam afterbody installs auxiliary balance controlling device.And connect reliable, be easy to remove and repair, can reuse.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the overall structure schematic diagram after the present invention installs.
Fig. 2 is stereogram of the present invention.
Fig. 3 is the stereogram of apparent direction after the present invention.
Fig. 4 is the stereogram of hold down gag in the present invention.
Fig. 5 is the stereogram of controlling device in the present invention.
Fig. 6 is the structural representation of walking beam afterbody.
Fig. 7 be in the present invention crossover sub and walking beam afterbody install after stereogram.
Fig. 8 be in the present invention crossover sub and walking beam afterbody install after the stereogram of rear apparent direction.
Fig. 9 be in the present invention auxiliary balance device installed by crossover sub and walking beam afterbody after stereogram.
Figure 10 is the structural representation of common balancer weight in the present invention.
Figure 11 is the structural representation of down eccentric barbell balancer weight in the present invention.
Figure 12 is the structural representation putting bell formula balancer weight in the present invention.
Figure 13 is the structural representation of rear horse head in the present invention.
Figure 14 is the structural representation of horse head counterweight in the present invention.
Figure 15 is the structural representation of slide block swing type counterweight in the present invention
In figure: housing 1, walking beam afterbody positioning hole 101, crossover sub end plate 102, end plate through hole 103, horizontal location hole 104, stiffening rib 2, bracket 3 is installed, hold down gag 4, controlling device 5, auxiliary balance locating stud 6, hold down gag lock bolt 7, outer plate 8, inner clip plate 9, positioning boss 91, controlling device clamping bolt 10, load body 11, horizontal adjusting bolt 12, vertical adjusting bolt 13, walking beam afterbody 14, walking beam afterbody locating stud 141, walking beam afterbody through hole 142, walking beam afterbody free bearing 143, walking beam afterbody horizontal pin 144, auxiliary balance device 15, auxiliary balance free bearing 151, pumping unit 16, common balancer weight 17, down eccentric barbell balancer weight 18, pendulum bell formula balancer weight 19, rear horse head 20, horse head counterweight 21, hydraulic cylinder type counterweight 211, slide block swing type counterweight 22.
Embodiment
As in Fig. 1 ~ 9, a kind of walking beam on pumping units auxiliary balance device crossover sub, housing 1 is socketed on walking beam afterbody 14, housing 1 comprises a top board and two side plates, a top board is fixedly connected with crossover sub end plate 102 with two side plates, crossover sub end plate 102 is provided with the end plate through hole 103 corresponding with the walking beam afterbody through hole 142 of walking beam afterbody 14, in end plate through hole 103, is provided with hold down gag 4;
Crossover sub end plate 102 is also installed with bracket 3 is installed, bracket 3 is installed and is provided with multiple tapped hole for being connected with auxiliary balance device 15.Structure thus, utilizes hold down gag 4 and crossover sub auxiliary balance device 15 and walking beam afterbody 14 to be linked together easily.
Preferred scheme, as in Fig. 2,7 ~ 9, at the top of housing 1, is also provided with the auxiliary balance locating stud 6 for locating auxiliary balance device 15 near the position of crossover sub end plate 102.Structure thus, is convenient to the location of auxiliary balance device 15, is also convenient to the installation of auxiliary balance device 15.
Preferred scheme is as in Fig. 4,7,8, in described hold down gag 4, outer plate 8 is connected with inner clip plate 9 by hold down gag lock bolt 7, and the length of outer plate 8 and inner clip plate 9 is greater than the internal diameter of end plate through hole 103, and the width of inner clip plate 9 is less than the internal diameter of end plate through hole 103.Structure thus, is convenient to inner clip plate 9 to pass end plate through hole 103 and walking beam afterbody through hole 142, is then connected with outer plate 8 by hold down gag lock bolt 7, thus by the crossover sub end plate 102 of crossover sub together with the end plate connection of walking beam afterbody 14.
Preferred scheme is as in Fig. 4, and inner clip plate 9 is provided with the positioning boss 91 for being placed in walking beam afterbody through hole 142.Structure thus, be convenient to the accurate location of the end plate realizing crossover sub end plate 102 and walking beam afterbody 14, also make stressed more reliable, namely on positioning boss 91, shearing force is produced between crossover sub and walking beam afterbody 14, without using the friction structure of crossover sub and walking beam afterbody 14 end face, be convenient to the accurate location realizing auxiliary balance device 15.
Preferred scheme, as in Fig. 2,4,7, is also provided with controlling device 5 between two side plates of housing 1;
In controlling device 5, load body 11 two ends are connected with two side plates of housing 1 by controlling device clamping bolt 10, and load body 11 is provided with horizontal adjusting bolt 12 and vertical adjusting bolt 13.Structure thus, horizontal adjusting bolt 12 and vertical adjusting bolt 13 are adjacent to walking beam and prevent from loosening, and prevent housing 1 from overturning, and realize the reliable location of crossover sub.
After controlling device 5 is installed, horizontal adjusting bolt 12 withstands the walking beam afterbody free bearing 143 of walking beam afterbody 14, and vertical adjusting bolt 13 withstands the bottom surface of walking beam afterbody 14.Structure thus, is convenient to the position adjusting whole auxiliary balance device 15, improves installation precision, and makes fixing more reliable.
Multiple stiffening rib 2 is provided with between the side plate of crossover sub end plate 102 and housing 1.Structure thus, that improves total is subject to force intensity.
One end of auxiliary balance device 15 is fixedly connected with installation bracket 3;
Described auxiliary balance device 15 comprises common balancer weight 17, and common balancer weight is the counterweight of horizontal-extending, can balance the swing stress of horse head,
Down eccentric barbell balancer weight 18,
Pendulum bell formula balancer weight 19, down eccentric barbell balancer weight 18 and pendulum bell formula balancer weight 19, adopt the design of offset, when front horse head is in low level, down eccentric barbell balancer weight 18 and pendulum bell formula balancer weight 19 are horizontal, also be just in time now front horse head polished rod load maximum moment, therefore balance quality better,
Rear horse head 20, rear horse head 20 connecting with pumping rod and front horse head formed dynamic balancing,
Horse head counterweight 21, horse head counterweight 21 is connected with hydraulic cylinder type counterweight 211, dynamic balancing is formed by hydraulic cylinder type counterweight 211 counterweight, the structure of hydraulic cylinder type counterweight 211 is that oil hydraulic cylinder is connected with fuel tank by pipeline, and pipeline is provided with solenoid valve, and current horse head is when lowest order, namely injection liquid force feed in oil hydraulic cylinder is given, to balance the crude oil extracted in sucker rod, along with the discharge extracting crude oil, the corresponding discharge under the Action of Gravity Field of oil hydraulic cylinder cylinder sleeve of the hydraulic oil in oil hydraulic cylinder,
Or slide block swing type counterweight 22, slide block swing type counterweight 22 is hinged with auxiliary balance free bearing 151, by the slip of screw-nut body band movable slider, thus drives swing type counterweight to be in different inclination angles, to regulate the size of counterweight.
When using installation, crossover sub housing 1 is enclosed within the walking beam afterbody 14 of pumping unit 16, and afterbody is adjacent to.By the inner clip plate 9 of hold down gag 4 horizontally through the end plate through hole 103 of end and walking beam afterbody through hole 142, be deep into the inside of walking beam on pumping units afterbody 14, in inside, inner clip plate 9 touched end face and place.Use the hold down gag lock bolt 7 of hold down gag 4 to connect the outer plate 8 being close to crossover sub end plate 102, thus the crossover sub end plate 102 of walking beam on pumping units afterbody 14 and crossover sub housing 1 is bound together.Below housing 1, the load body 11 of controlling device 5 is locked on crossover sub housing 1 side plate by the controlling device clamping bolt 10 at two ends.Use horizontal adjusting bolt 12 to withstand walking beam on pumping units afterbody 14 lower bearing seat, vertical adjusting bolt 13, screw and upwards withstand walking beam on pumping units afterbody 14 bottom surface, thus by crossover sub and walking beam locking binding.
After walking beam on pumping units auxiliary balance device crossover sub installs, pumping unit auxiliary device 15 to be installed can be made to be positioned at walking beam afterbody by auxiliary balance locating stud 6, by installing the tapped hole on bracket 3, use bolt tightening, the auxiliary balance device 15 making pumping unit to be installed is fixedly mounted on walking beam on pumping units afterbody 14 by crossover sub of the present invention.
The above embodiments are only the preferred technical solution of the present invention, and should not be considered as restriction of the present invention, and the embodiment in the application and the feature in embodiment, can combination in any mutually when not conflicting.The technological scheme that protection scope of the present invention should be recorded with claim, the equivalents comprising technical characteristics in the technological scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection scope of the present invention.
Claims (10)
1. a walking beam on pumping units auxiliary balance device crossover sub, it is characterized in that: housing (1) is socketed on walking beam afterbody (14), housing (1) comprises a top board and two side plates, a top board is fixedly connected with crossover sub end plate (102) with two side plates, crossover sub end plate (102) is provided with the end plate through hole (103) corresponding with the walking beam afterbody through hole (142) of walking beam afterbody (14), in end plate through hole (103), is provided with hold down gag (4);
Crossover sub end plate (102) is also installed with bracket (3) is installed, bracket (3) is installed and is provided with multiple tapped hole for being connected with auxiliary balance device (15).
2. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, it is characterized in that: at the top of housing (1), being also provided with the auxiliary balance locating stud (6) for locating auxiliary balance device (15) near the position of crossover sub end plate (102).
3. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, it is characterized in that: in described hold down gag (4), outer plate (8) is connected with inner clip plate (9) by hold down gag lock bolt (7), the length of outer plate (8) and inner clip plate (9) is greater than the internal diameter of end plate through hole (103), and the width of inner clip plate (9) is less than the internal diameter of end plate through hole (103).
4. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 3, is characterized in that: inner clip plate (9) is provided with the positioning boss (91) for being placed in walking beam afterbody through hole (142).
5. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, it is characterized in that: be also provided with multiple walking beam afterbody positioning hole (101) corresponding with the walking beam afterbody locating stud (141) on walking beam afterbody (14) at the top board of housing (1), walking beam afterbody positioning hole (101) is slotted hole.
6. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, is characterized in that: on crossover sub end plate (102), be also provided with the horizontal location hole (104) corresponding with the walking beam afterbody horizontal pin (144) of walking beam afterbody (14).
7. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, is characterized in that: between two side plates of housing (1), be also provided with controlling device (5);
In controlling device (5), load body (11) two ends are connected with two side plates of housing (1) by controlling device clamping bolt (10), and load body (11) is provided with horizontal adjusting bolt (12) and vertical adjusting bolt (13).
8. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 7, it is characterized in that: after controlling device (5) is installed, horizontal adjusting bolt (12) withstands the walking beam afterbody free bearing (143) of walking beam afterbody (14), and vertical adjusting bolt (13) withstands the bottom surface of walking beam afterbody (14).
9. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, is characterized in that: be provided with multiple stiffening rib (2) between the side plate of crossover sub end plate (102) and housing (1).
10. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, is characterized in that: one end of auxiliary balance device (15) is fixedly connected with installation bracket (3);
Described auxiliary balance device (15) comprise common balancer weight (17),
Down eccentric barbell balancer weight (18),
Pendulum bell formula balancer weight (19),
The rear horse head (20) of double-horsehead pumping unit,
The counterweight (21) of double-horsehead pumping unit, the counterweight (21) of double-horsehead pumping unit is connected with hydraulic cylinder type counterweight (211),
Or slide block swing type counterweight (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516721.2A CN105090346B (en) | 2015-08-21 | 2015-08-21 | Walking beam on pumping units auxiliary balance device crossover sub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516721.2A CN105090346B (en) | 2015-08-21 | 2015-08-21 | Walking beam on pumping units auxiliary balance device crossover sub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105090346A true CN105090346A (en) | 2015-11-25 |
| CN105090346B CN105090346B (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510516721.2A Active CN105090346B (en) | 2015-08-21 | 2015-08-21 | Walking beam on pumping units auxiliary balance device crossover sub |
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| Country | Link |
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| CN (1) | CN105090346B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194393A (en) * | 1978-04-13 | 1980-03-25 | Stallion Corporation | Well driving and monitoring system |
| CN2903359Y (en) * | 2006-03-07 | 2007-05-23 | 新疆维吾尔自治区第三机床厂 | Lower deviation barbell long stroke oil pumping machine |
| CN201416425Y (en) * | 2009-04-30 | 2010-03-03 | 山西镇新机械自控设备有限公司 | Double-horsehead oil pumping unit capable of horsehead rotation and walking beam balancing |
| CN101725332A (en) * | 2008-10-31 | 2010-06-09 | 高阳特 | Swinging bell automatic leveling energy-saving type oil pumping machine |
| CN204878527U (en) * | 2015-08-21 | 2015-12-16 | 长江大学 | Balancing unit crossover sub is assisted to beam -pumping unit walking beam |
-
2015
- 2015-08-21 CN CN201510516721.2A patent/CN105090346B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194393A (en) * | 1978-04-13 | 1980-03-25 | Stallion Corporation | Well driving and monitoring system |
| CN2903359Y (en) * | 2006-03-07 | 2007-05-23 | 新疆维吾尔自治区第三机床厂 | Lower deviation barbell long stroke oil pumping machine |
| CN101725332A (en) * | 2008-10-31 | 2010-06-09 | 高阳特 | Swinging bell automatic leveling energy-saving type oil pumping machine |
| CN201416425Y (en) * | 2009-04-30 | 2010-03-03 | 山西镇新机械自控设备有限公司 | Double-horsehead oil pumping unit capable of horsehead rotation and walking beam balancing |
| CN204878527U (en) * | 2015-08-21 | 2015-12-16 | 长江大学 | Balancing unit crossover sub is assisted to beam -pumping unit walking beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105090346B (en) | 2016-03-02 |
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Effective date of registration: 20221222 Address after: Room 401-403, Building A, Science and Technology Entrepreneurship Service Center, Lu'an Economic and Technological Development Zone, Lu'an City, Anhui Province, 237000 Patentee after: ANHUI SANCHENG INFORMATION TECHNOLOGY Co.,Ltd. Address before: 434023 Yangtze University, 1 South Ring Road, Hubei, Jingzhou Patentee before: Yangtze University |
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Effective date of registration: 20230105 Address after: Room 709, plant D-1, Zone D, Service Outsourcing Industrial Park, No. 8 Xinfeng Road, high tech Zone, Daqing City, Heilongjiang Province, 163000 Patentee after: Daqing yikairui Petroleum Technology Co.,Ltd. Address before: Room 401-403, Building A, Science and Technology Entrepreneurship Service Center, Lu'an Economic and Technological Development Zone, Lu'an City, Anhui Province, 237000 Patentee before: ANHUI SANCHENG INFORMATION TECHNOLOGY Co.,Ltd. |
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