CN110700179B - Regulating and controlling system for water conservancy and hydropower engineering and regulating and controlling method thereof - Google Patents
Regulating and controlling system for water conservancy and hydropower engineering and regulating and controlling method thereof Download PDFInfo
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- CN110700179B CN110700179B CN201911005657.6A CN201911005657A CN110700179B CN 110700179 B CN110700179 B CN 110700179B CN 201911005657 A CN201911005657 A CN 201911005657A CN 110700179 B CN110700179 B CN 110700179B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
Abstract
The invention discloses a regulation and control system for water conservancy and hydropower engineering and a regulation and control method thereof, and the regulation and control system comprises a base plate, an expansion shaft, a mechanical shaft seal, a hydraulic rod and a propeller, wherein the left side and the right side of the upper part of the base plate are respectively provided with a side supporting plate, a protective shell is arranged on an inner bolt of the side supporting plate, the expansion shaft is arranged on a bearing above the side supporting plate, a sleeve is arranged on the outer side of the expansion shaft, the hydraulic rod is arranged on a right bolt of the side supporting plate, a groove is formed in the outer side surface of the movable rod, a worm is arranged in the protective shell, the mechanical shaft seal is arranged between the protective shell and a main shaft, a. The regulation and control system for the water conservancy and hydropower engineering and the regulation and control method thereof are provided with the water cup, the worm and the worm gear, so that the upper water flow of the river can drive the device to operate, the device can provide thrust for the lower water flow of the river, and the flow rate of the lower water flow of the river is regulated.
Description
Technical Field
The invention relates to the technical field of hydraulic and hydroelectric engineering, in particular to a regulation and control system and a regulation and control method for the hydraulic and hydroelectric engineering.
Background
The river is a common daily landscape, which not only can drive drinking water for people, but also can irrigate fields, however, the river has an upper part and a lower part in the actual flowing process, wherein the flow rate of the upper water flow is greater than that of the lower water flow because the upper water flow has no obstacles, and the flow rate of the lower water flow is further reduced because the lower water flow contains sludge, so that the flow rate of the lower water flow of the river is too slow, the phenomenon of dead water is easily generated, and meanwhile, impurities in the lower water flow of the river cannot be well conveyed, so that the sludge at the bottom of the river is more and more, and the sanitary safety of the river is influenced.
Therefore, we propose a regulation system and a regulation method for hydraulic and hydroelectric engineering so as to solve the problems set forth above.
Disclosure of Invention
The invention aims to provide a regulation and control system for water conservancy and hydropower engineering and a regulation and control method thereof, so as to solve the problem that the prior market does not have the function of regulating the speed of lower river water flow.
In order to achieve the purpose, the invention provides the following technical scheme: a regulation and control system for water conservancy and hydropower engineering comprises a base plate, expansion shafts, a mechanical shaft seal, hydraulic rods and a propeller, wherein side supporting plates are arranged on the left side and the right side of the upper portion of the base plate, a protective shell is installed on the inner side bolts of the side supporting plates, the expansion shafts are installed on the upper portion of the side supporting plates in a bearing mode and penetrate through the protective shell, the mechanical shaft seal is arranged between the protective shell and the expansion shafts, sleeves are arranged on the outer sides of the expansion shafts, limiting plates are arranged on the left side and the right side of the sleeves respectively, the limiting plates are installed on the outer sides of the expansion shafts, connecting rods are arranged on the outer sides of the sleeves, water cups are installed at the tail ends of the connecting rods, the hydraulic rods are installed on the right side bolts of the side supporting plates, movable rods are arranged on the left sides of the hydraulic, and a main shaft is arranged below the worm, a main shaft bearing is arranged in the protective shell, a mechanical shaft seal is arranged between the protective shell and the main shaft, a worm wheel is arranged on the outer side of the main shaft, and a propeller is arranged in front of the main shaft.
Preferably, the lateral supporting plates are symmetrically provided with 2 pieces of base plates relative to the central line of the base plates, the base plates are perpendicular to the lateral supporting plates, and the lateral supporting plates and the protective housings are in one-to-one correspondence.
Preferably, the surface of inflation axle has been seted up the through-hole, and the inside of inflation axle is provided with the inflation rubber block to the through-hole is provided with 4 about the central equidistance of inflation axle, and the through-hole equidistance distributes at the surface of inflation axle simultaneously, and the through-hole is unsmooth cooperation with the inflation rubber block moreover, and the through-hole setting is between the limiting plate.
Preferably, the inside piston that is provided with in right side of inflation axle, and the right side of piston installs the cock stem to the right side of cock stem is provided with the connecting pipe, and the internally mounted of connecting pipe has the movable rod moreover, and spacing bolt is installed to the surface isogonism screw thread of connecting pipe simultaneously, and the setting of spacing bolt is in the inside of recess, and the internal diameter of connecting pipe is clearance fit with the external diameter of movable rod.
Preferably, the outer diameter of the limiting plate is larger than the inner diameter of the sleeve, the inner diameter of the sleeve is in clearance fit with the outer diameter of the expansion shaft, and the sleeve is distributed on the outer side of the expansion shaft at equal intervals.
Preferably, the sleeve, the connecting rod and the water cup are of an integrated structure, the three connecting rods are distributed at equal angles relative to the center line of the sleeve, the water cup is of a hollow hemispherical structure, one side of the connecting rod is of a triangular structure, and the triangular structure of the connecting rod and the arc structure of the water cup are on the same side.
Preferably, the worm is connected with the expansion shaft through a belt, the worm is parallel to the expansion shaft, and the worm bearing is arranged between the side supporting plate and the side supporting plate.
Preferably, the central line of worm wheel and the central line mutually perpendicular of worm, and the worm wheel equidistance sets up the below at the worm to the worm wheel is the one-to-one correspondence with the main shaft, and the main shaft is the key-type connection with the worm wheel simultaneously, and the main shaft is the one-to-one correspondence with the screw moreover.
The other technical scheme provided by the invention is to provide a regulation and control system for hydraulic and hydroelectric engineering and a regulation and control method thereof, which comprises the following steps;
s1: the whole device is arranged at a proper position in a river through a base plate, and meanwhile, the opening direction of a water cup is ensured to correspond to the flowing direction of water flow;
s2: the water cup rotates in the flow driving of the upper water level of the river, so that the connecting rod in a pentagonal structure is matched to drive the sleeve to move, and the sleeve drives the expansion shaft to rotate through the expansion rubber block;
s3: the worm is driven to rotate by the belt in the rotation process of the expansion shaft, so that the worm drives the worm wheel to rotate;
s4: when the worm wheel rotates, the main shaft is driven to rotate through key connection, so that the main shaft drives the propeller to rotate, the propeller rotates to generate thrust, the flowing speed of the lower water flow of the river is increased, the pollution discharge performance of the river is improved, and the phenomenon of dead water is avoided;
s5: when the demand stops adjusting the velocity of flow of the lower rivers of river, through starting hydraulic stem for the hydraulic stem drives the movable rod and removes, and then makes the movable rod drive the connecting pipe through spacing bolt and remove right, leads to the connecting pipe to drive the piston through the connecting rod and remove to the right side, thereby twitch the inside air of inflation axle, makes the inflation rubber piece retract because of losing atmospheric pressure, thereby makes the sleeve pipe can not drive the inflation axle rotatory, and then has stopped the rotation of screw, no longer adjusts the river velocity of flow.
Compared with the prior art, the invention has the beneficial effects that: the regulating system for the water conservancy and hydropower engineering and the regulating method thereof;
1. the water cup, the worm and the worm wheel are arranged, in the using process, the water cup can be driven to rotate by the upper water flow of the river, so that the water cup drives the expansion shaft to rotate, the expansion shaft drives the worm and the worm wheel to rotate, the worm wheel drives the main shaft and the propeller to rotate, the propeller rotates to generate thrust, the flow rate of the lower water flow of the river is effectively increased, extra energy consumption is not needed in the process, and the device is energy-saving and environment-friendly;
2. be provided with inflation axle and hydraulic stem for the in-process that the device was using can come control inflation axle and sheathed tube relation of being connected through the hydraulic stem, thereby makes the device can control the rotation and the stopping of screw, increases the practicality of device.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic side sectional view of the present invention;
FIG. 4 is a schematic view of the connection structure of the movable rod and the expansion shaft according to the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 6 is a schematic side sectional view of an expansion shaft according to the present invention;
FIG. 7 is a cross-sectional view of the connecting rod of the present invention.
In the figure: 1. a base plate; 2. side supporting plates; 3. a protective shell; 4. an expansion shaft; 41. a through hole; 42. expanding the rubber block; 43. a piston; 44. a stopper rod; 45. a connecting pipe; 46. a limit bolt; 5. a mechanical shaft seal; 6. a limiting plate; 7. a sleeve; 8. a connecting rod; 9. a water cup; 10. a hydraulic lever; 11. a movable rod; 12. a groove; 13. a worm; 14. a worm gear; 15. a main shaft; 16. a propeller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a regulation and control system for water conservancy and hydropower engineering comprises a base plate 1, side supporting plates 2, a protective shell 3, an expansion shaft 4, a mechanical shaft seal 5, limiting plates 6, sleeves 7, connecting rods 8, a water cup 9, a hydraulic rod 10, a movable rod 11, a groove 12, a worm 13, a worm wheel 14, a main shaft 15 and a propeller 16, wherein the side supporting plates 2 are arranged on the left side and the right side above the base plate 1, the protective shell 3 is mounted on an inner bolt of the side supporting plates 2, the expansion shaft 4 is mounted on a bearing above the side supporting plates 2, the expansion shaft 4 penetrates through the protective shell 3, the mechanical shaft seal 5 is arranged between the protective shell 3 and the expansion shaft 4, the sleeves 7 are arranged on the outer side of the expansion shaft 4, the limiting plates 6 are arranged on the left side and the right side of the sleeves 7, the limiting plates 6 are mounted on the outer side of the expansion shaft 4, hydraulic stem 10 is installed to the right side bolt of collateral branch backup pad 2, and the left side of hydraulic stem 10 is provided with movable rod 11, and movable rod 11 runs through collateral branch backup pad 2, recess 12 has been seted up to the lateral surface of movable rod 11, the inside of protective housing 3 is provided with worm 13, and the below of worm 13 is provided with main shaft 15, and main shaft 15 bearing installation is in the inside of protective housing 3, be provided with mechanical shaft seal 5 between protective housing 3 and the main shaft 15, and worm wheel 14 is installed in the main shaft 15 outside, screw 16 is installed in the place ahead of main shaft 15.
Collateral branch fagging 2 is provided with 2 about the central line symmetry of bed plate 1, and mutually perpendicular between bed plate 1 and the collateral branch fagging 2 to collateral branch fagging 2 is the one-to-one relation with protective housing 3, guarantees the normal use of device.
Through-hole 41 has been seted up to the surface of inflation axle 4, and the inside of inflation axle 4 is provided with inflation rubber block 42, and through-hole 41 is provided with 4 about the central equidistance of inflation axle 4, and through-hole 41 equidistance distributes at the surface of inflation axle 4 simultaneously, and through-hole 41 and inflation rubber block 42 are unsmooth cooperation, and through-hole 41 sets up between limiting plate 6, the design of above-mentioned structure, increased the leakproofness between inflation axle 4 and the inflation rubber block 42, the inflation rubber block 42 of being convenient for simultaneously receives atmospheric pressure to produce and warp.
The piston 43 is arranged inside the right side of the expansion shaft 4, the plug rod 44 is installed on the right side of the piston 43, the connecting pipe 45 is arranged on the right side of the plug rod 44, the movable rod 11 is installed inside the connecting pipe 45, meanwhile, the limiting bolt 46 is installed on the surface of the connecting pipe 45 in an equal-angle threaded mode, the limiting bolt 46 is arranged inside the groove 12, the inner diameter of the connecting pipe 45 is in clearance fit with the outer diameter of the movable rod 11, and due to the structural design, the position of the piston 43 can be controlled through the hydraulic rod 10 in the using process of the device, the air pressure inside the expansion shaft 4 is adjusted, the deformation degree of the expansion rubber block 42 is further controlled, and the connecting condition of the expansion shaft 4 and the sleeve 7 can be controlled in the actual using process of the.
The external diameter of limiting plate 6 is greater than the internal diameter of sleeve pipe 7, and the internal diameter of sleeve pipe 7 is clearance fit with the external diameter of inflation axle 4 to sleeve pipe 7 equidistance distributes in the outside of inflation axle 4, and the design of above-mentioned structure is effectual carries on spacingly to sleeve pipe 7, avoids moving about of sleeve pipe 7.
The sleeve pipe 7, the connecting rod 8 and the drinking cup 9 three are integrated structures, and the connecting rod 8 has three about the central line equiangular distribution of sleeve pipe 7, and the drinking cup 9 is hollow hemispherical structure, and one side of connecting rod 8 is the triangle-shaped structure simultaneously, and the triangle-shaped structure of connecting rod 8 and the arc structure of drinking cup 9 are in same one side simultaneously, and the design of above-mentioned structure makes drinking cup 9 can only singly revolve to the rotation, has guaranteed the normal use of device.
The worm 13 is connected for the belt between the axle 4 with expanding, and is parallel to each other between 13 worms and the axle 4 that expands to 13 worm bearings are installed between collateral branch fagging 2 and collateral branch fagging 2, and the normal use of device has been guaranteed in the design of above-mentioned structure.
The central line of the worm wheel 14 is perpendicular to the central line of the worm 13, the worm wheel 14 is arranged below the worm 13 at equal intervals, the worm wheel 14 and the main shaft 15 are in one-to-one correspondence, meanwhile, the main shaft 15 is in key connection with the worm wheel 14, and the main shaft 15 and the propeller 16 are in one-to-one correspondence.
In order to better show the regulation and control system for the hydraulic and hydroelectric engineering and the regulation and control method thereof, the regulation and control system for the hydraulic and hydroelectric engineering and the regulation and control method thereof in the embodiment comprise the following steps;
s1: as shown in fig. 1 and 3, the whole device is installed in a proper position in a river through a base plate 1, and simultaneously, the opening direction of a water cup 9 is ensured to correspond to the flowing direction of water flow;
s2: as shown in fig. 1-3 and 7, the water cup 9 rotates in the flow driving of the upper water level of the river, so that the sleeve 7 is driven to move by matching with the connecting rod 8 with a pentagonal structure, as shown in fig. 5-6, so that the sleeve 7 drives the expansion shaft 4 to rotate by the expansion rubber block 42;
s3: as shown in fig. 1-3, during the rotation of the expansion shaft 4, the worm 13 is driven by the belt to rotate, so that the worm 13 drives the worm wheel 14 to rotate;
s4: as shown in fig. 2-3, when the worm wheel 14 rotates, the main shaft 15 is driven to rotate through key connection, so that the main shaft 15 drives the propeller 16 to rotate, the propeller 16 rotates to generate thrust, the flowing speed of the lower stream of the river is increased, the pollution discharge performance of the river is improved, and the phenomenon of dead water is avoided;
s5: when the flow rate of the lower stream of the river is required to be stopped to be regulated, as shown in fig. 1 and fig. 4-6, the hydraulic rod 10 is started to drive the movable rod 11 to move, so that the movable rod 11 drives the connecting pipe 45 to move rightwards through the limit bolt 46, the connecting pipe 45 drives the piston 43 to move rightwards through the plug rod 44, air inside the expansion shaft 4 is pumped, the expansion rubber block 42 retracts due to the loss of air pressure, the sleeve 7 cannot drive the expansion shaft 4 to rotate, the rotation of the propeller 16 is stopped, and the flow rate of the river is not regulated any more.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a regulation and control system for hydraulic and hydroelectric engineering, includes bed plate (1), inflation axle (4), mechanical shaft seal (5), hydraulic stem (10) and screw (16), its characterized in that: the base plate is characterized in that side supporting plates (2) are arranged on the left side and the right side of the upper portion of the base plate (1), a protective shell (3) is installed on an inner side bolt of each side supporting plate (2), an expansion shaft (4) is installed on a bearing on the upper portion of each side supporting plate (2), the expansion shaft (4) penetrates through the protective shell (3), a mechanical shaft seal (5) is arranged between the protective shell (3) and the expansion shaft (4), a sleeve (7) is arranged on the outer side of the expansion shaft (4), limiting plates (6) are arranged on the left side and the right side of the sleeve (7), the limiting plates (6) are installed on the outer side of the expansion shaft (4), a connecting rod (8) is arranged on the outer side of the sleeve (7), a water cup (9) is installed at the tail end of the connecting rod (8), a hydraulic rod (10) is installed on a right, the movable rod (11) penetrates through the side supporting plate (2), a groove (12) is formed in the outer side face of the movable rod (11), a worm (13) is arranged inside the protective shell (3), a main shaft (15) is arranged below the worm (13), the main shaft (15) is installed inside the protective shell (3) in a bearing mode, a mechanical shaft seal (5) is arranged between the protective shell (3) and the main shaft (15), a worm wheel (14) is installed on the outer side of the main shaft (15), and a propeller (16) is installed in front of the main shaft (15);
the worm (13) is connected with the expansion shaft (4) through a belt, the worm (13) is parallel to the expansion shaft (4), and the worm (13) is mounted between the side supporting plate (2) and the side supporting plate (2) through a bearing.
2. A regulation and control system for hydraulic and hydroelectric engineering according to claim 1 in which: collateral branch fagging (2) are provided with 2 about the central line symmetry of bed plate (1), and mutually perpendicular between bed plate (1) and collateral branch fagging (2) to collateral branch fagging (2) are the one-to-one relation with protective housing (3).
3. A regulation and control system for hydraulic and hydroelectric engineering according to claim 1 in which: through-hole (41) have been seted up to the surface of inflation axle (4), and the inside of inflation axle (4) is provided with inflation rubber block (42) to through-hole (41) are provided with 4 about the central uniform angle of inflation axle (4), and through-hole (41) equidistance distributes at the surface of inflation axle (4) simultaneously, and through-hole (41) and inflation rubber block (42) are unsmooth cooperation, and through-hole (41) set up between limiting plate (6).
4. A regulation and control system for hydraulic and hydroelectric engineering according to claim 3 in which: inside piston (43) that is provided with in the right side of inflation axle (4), and the right side of piston (43) installs cock stem (44), and the right side of cock stem (44) is provided with connecting pipe (45), and the internally mounted of connecting pipe (45) has movable rod (11), and angle screw such as the surface of connecting pipe (45) installs stop bolt (46) simultaneously, and stop bolt (46) set up the inside in recess (12), and the internal diameter of connecting pipe (45) is clearance fit with the external diameter of movable rod (11).
5. A regulation and control system for hydraulic and hydroelectric engineering according to claim 1 in which: the outer diameter of the limiting plate (6) is larger than the inner diameter of the sleeve (7), the inner diameter of the sleeve (7) is in clearance fit with the outer diameter of the expansion shaft (4), and the sleeves (7) are distributed on the outer side of the expansion shaft (4) at equal intervals.
6. A regulation and control system for hydraulic and hydroelectric engineering according to claim 1 in which: the sleeve pipe (7), the connecting rod (8) and the water cup (9) are of an integrated structure, the connecting rod (8) is distributed in an equal-angle mode about the center line of the sleeve pipe (7), the water cup (9) is of a hollow hemispherical structure, one side of the connecting rod (8) is of a triangular structure, and the triangular structure of the connecting rod (8) and the arc-shaped structure of the water cup (9) are on the same side.
7. A regulation and control system for hydraulic and hydroelectric engineering according to claim 1 in which: the central line of worm wheel (14) and the central line mutually perpendicular of worm (13), and worm wheel (14) equidistance sets up the below at worm (13), and worm wheel (14) are one-to-one correspondence with main shaft (15), and main shaft (15) are the key-type connection with worm wheel (14) simultaneously, and main shaft (15) are one-to-one correspondence with screw propeller (16).
8. A regulation and control system for hydraulic and hydroelectric engineering according to claim 1, comprising the steps of;
s1: the whole device is arranged at a proper position in a river through a base plate (1), and meanwhile, the opening direction of a water cup (9) is ensured to correspond to the flowing direction of water flow;
s2: the water cup (9) rotates in the flowing drive of the upper water level of the river, so that the connecting rod (8) in a pentagonal structure is matched to drive the sleeve (7) to move, and the sleeve (7) drives the expansion shaft (4) to rotate through the expansion rubber block (42);
s3: the worm (13) is driven to rotate by a belt in the rotating process of the expansion shaft (4), so that the worm (13) drives the worm wheel (14) to rotate;
s4: when the worm wheel (14) rotates, the main shaft (15) is driven to rotate through key connection, so that the main shaft (15) drives the propeller (16) to rotate, the propeller (16) rotates to generate thrust, the flowing speed of lower-level water flow of a river is increased, the pollution discharge performance of the river is improved, and the phenomenon of dead water is avoided;
s5: when the demand stops the flow rate regulation of river lower rivers, through starting hydraulic stem (10), make hydraulic stem (10) drive movable rod (11) and remove, and then make movable rod (11) drive connecting pipe (45) through spacing bolt (46) and remove right, lead to connecting pipe (45) to drive piston (43) through cock stem (44) and remove to the right side, thereby twitch inflation axle (4) inside air, make inflation rubber piece (42) retract because of losing atmospheric pressure, thereby make sleeve pipe (7) can not drive inflation axle (4) rotatory, and then stopped the rotation of screw (16), no longer adjust the river velocity of flow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911005657.6A CN110700179B (en) | 2019-10-22 | 2019-10-22 | Regulating and controlling system for water conservancy and hydropower engineering and regulating and controlling method thereof |
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| CN201911005657.6A CN110700179B (en) | 2019-10-22 | 2019-10-22 | Regulating and controlling system for water conservancy and hydropower engineering and regulating and controlling method thereof |
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| CN110700179B true CN110700179B (en) | 2021-02-26 |
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| CN111910606B (en) * | 2020-09-08 | 2021-12-28 | 黄丽艳 | Water body floating oil collecting device |
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| EP2682528A2 (en) * | 2012-07-06 | 2014-01-08 | Baggerwerken Decloedt en Zoon | Device and method for dredging bed material under water |
| CN107905196A (en) * | 2017-09-30 | 2018-04-13 | 陈祖炳 | A kind of flowing water slag remover |
| CN208251008U (en) * | 2018-05-30 | 2018-12-18 | 陈忠华 | A kind of protective device of Novel water conservancy hydroelectric project dam |
| CN208830278U (en) * | 2018-06-13 | 2019-05-07 | 峨眉山建南水电设备制造有限公司 | A kind of automatic dirt cleaning device for hydroelectric station |
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2019
- 2019-10-22 CN CN201911005657.6A patent/CN110700179B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2167128Y (en) * | 1993-01-22 | 1994-06-01 | 唐振强 | Hydraulic dredger following flowing water during work |
| EP2682528A2 (en) * | 2012-07-06 | 2014-01-08 | Baggerwerken Decloedt en Zoon | Device and method for dredging bed material under water |
| CN107905196A (en) * | 2017-09-30 | 2018-04-13 | 陈祖炳 | A kind of flowing water slag remover |
| CN208251008U (en) * | 2018-05-30 | 2018-12-18 | 陈忠华 | A kind of protective device of Novel water conservancy hydroelectric project dam |
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Effective date of registration: 20230119 Address after: No. 1252, Feiao Avenue, Kunyang Town, Pingyang County, Wenzhou City, Zhejiang Province, 325400 (the third floor of the G-304 trade union of Pingyang County Cultural Center) Patentee after: Zhejiang Hanxin Construction Co.,Ltd. Address before: 325400 Room 301, building 2, Zhuangji building, east of 104 National Road, Kunyang Town, Pingyang County, Wenzhou City, Zhejiang Province Patentee before: Wenzhou Jianghang Construction Co.,Ltd. |