CN112303355B - Independent hydraulic clamping and sealing fitting piece - Google Patents
Independent hydraulic clamping and sealing fitting piece Download PDFInfo
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- CN112303355B CN112303355B CN202011211944.5A CN202011211944A CN112303355B CN 112303355 B CN112303355 B CN 112303355B CN 202011211944 A CN202011211944 A CN 202011211944A CN 112303355 B CN112303355 B CN 112303355B
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- fixedly connected
- clamping
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- section
- sealing
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to the technical field of hydraulic fittings, in particular to an independent hydraulic clamping and sealing fitting piece, which comprises a fitting piece body, a clamping section, a middle section and a sealing section, wherein a T-shaped cavity is formed in the side wall of the clamping section, the upper end and the lower end of the T-shaped cavity are communicated with the inside and the outside of the clamping section, a mounting box is fixedly connected to the outer wall of the clamping section, a hydraulic cylinder is fixedly connected in the mounting box, the other end of the hydraulic cylinder is connected with a telescopic rod vertically arranged in the T-shaped cavity, a clamping plate is horizontally arranged at the bottom of the T-shaped cavity and fixedly connected with the other end of the telescopic rod, the bottom surface of the clamping plate is arranged in an arc shape and is matched with the inner wall of the clamping section, a cavity is formed in the side wall of the middle section, an electromagnet structure is arranged in the cavity, and an electromagnet structure is arranged in the middle section, so that the electromagnet structure generates suction force to adsorb and fix the iron pipe.
Description
Technical Field
The invention relates to the technical field of hydraulic fittings, in particular to an independent hydraulic clamping and sealing fitting.
Background
Mechanically connected repair fittings, such as those used for riser repair of subsea pipelines, are useful in situations where actual welding is not possible. In the prior art, the pipeline repairing and maintaining fitting piece comprises a mechanical clamping and sealing fitting piece and a hydraulic clamping and sealing fitting piece, most of the pipe fittings used in life are iron pipes, the hydraulic fitting pieces are widely applied, but the hydraulic fitting pieces are high in production cost and complex in design, and cannot clamp the pipes well in the operation process, so that the joints of the pipes are easy to leak and the sealing is not tight.
Disclosure of Invention
It is an object of the present invention to provide a separate hydraulically clamped and sealed fitting that addresses the problems set forth in the background above.
In order to achieve the purpose, the invention provides the following technical scheme: an independent hydraulic clamping and sealing fitting piece comprises a fitting piece body, a clamping section, an intermediate section and a sealing section, wherein a T-shaped cavity is formed in the side wall of the clamping section, the upper end and the lower end of the T-shaped cavity are communicated with the inside and the outside of the clamping section, a mounting box is fixedly connected to the outer wall of the clamping section and communicated with an opening at the upper end of the T-shaped cavity, a hydraulic cylinder is fixedly connected to the mounting box, the other end of the hydraulic cylinder is connected with a telescopic rod vertically placed in the T-shaped cavity, a clamping plate is horizontally placed at the bottom of the T-shaped cavity and fixedly connected with the other end of the telescopic rod, the bottom surface of the clamping plate is arranged in an arc shape, the bottom surface of the clamping plate is matched with the inner wall of the clamping section, a cavity is formed in the side wall of the intermediate section and is provided with an electromagnet structure, and the cavity and the T-shaped cavity are positioned on the same horizontal line, the sealing ring is vertically welded in the sealing section, an annular groove is formed in one side, facing the middle section, of the sealing ring, a groove is vertically formed in the side wall of the annular groove, and a sealing structure is fixedly connected in the groove.
Preferably, the T-shaped cavity, the mounting box, the hydraulic cylinder, the telescopic rod and the clamping plate are symmetrically arranged on two sides of the clamping section, and the bottom surface of the clamping plate is fixedly connected with anti-skid lines.
Preferably, the electro-magnet structure includes iron plate, wire, battery and controller, the iron plate level is fixed in the cavity, and the wire winding is on the iron plate, the bottom fixed connection of battery is on the outer wall of mid portion section, and the top fixedly connected with controller of battery, the both ends of wire link up the lateral wall and the battery intercommunication of mid portion section respectively.
Preferably, the cavity and the electromagnet structure are symmetrically arranged on two sides of the middle section, and the lead, the storage battery and the controller are all waterproof structures.
Preferably, the grooves are distributed annularly around the center of the annular groove in the vertical direction, the grooves are distributed in an array mode in the horizontal direction, and the bottom of the annular groove is fixedly connected with the sealing ring.
Preferably, seal structure includes spring, fixed block, damping tube, baffle and push rod, the one end fixed connection of spring is in the bottom of recess, and the other end fixed connection of spring is in the bottom of fixed block, and the fixed block is trapezoidal setting, the internally mounted of spring has the damping tube, and the one end of damping tube and the bottom fixed connection of recess, the baffle level is placed in the damping tube, and the lateral wall sliding connection of baffle and damping tube, the baffle with link up the push rod fixed connection of the damping tube other end, and the other end of push rod and the bottom fixed connection of fixed block, be provided with the scavenge hole about the push rod symmetry on the baffle.
Preferably, the inner wall of the sealing section is vertically provided with a spherical cavity, the spherical cavity corresponds to the groove, and the spherical cavity is internally connected with steel balls in a sliding manner.
Compared with the prior art, the invention has the beneficial effects that:
1. the cavity is formed in the middle section, the electromagnet structure is placed in the cavity, so that the electromagnet structure generates suction force, the iron pipe can be adsorbed and fixed, the pipeline cannot move in the process of clamping the pipeline, meanwhile, the controller is arranged, the suction force can be regulated and controlled by controlling the current, and the controller is closed to facilitate the pipeline to be pulled out;
2. through being provided with sealing ring and ring channel in sealing section, can carry out the joint to the opening part of pipeline, increased area of contact, provide the leakproofness of fitting piece to be provided with seal structure and sealing washer in the ring channel, make the pipeline when taking place to rock, the effort is offset.
3. Through simple institutional advancement, vertically seted up spherical chamber on seal segment's inner wall to there is the steel ball equal sliding connection in spherical chamber, make the steel ball and the lateral wall sliding connection of iron pipe, reduced the frictional force of iron pipe and seal segment inner wall.
Drawings
FIG. 1 is a view showing the structure of a fitting body according to the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of a seal ring structure according to the present invention;
FIG. 5 is an enlarged view of the invention at B in FIG. 4;
FIG. 6 is a schematic side view of a seal ring according to the present invention;
fig. 7 is a circuit diagram of the electromagnet structure of the present invention.
In the figure: the fitting body 1, the clamping section 2, the T-shaped cavity 21, the mounting box 22, the hydraulic cylinder 23, the telescopic rod 24, the clamping plate 25, the anti-skid pattern 251, the middle section 3, the cavity 31, the electromagnet structure 32, the iron block 321, the lead wire 322, the storage battery 323, the controller 324, the sealing section 4, the sealing ring 41, the annular groove 42, the sealing ring 421, the groove 43, the sealing structure 44, the spring 441, the fixing block 442, the damping tube 443, the baffle 444, the push rod 445, the ventilation hole 446, the spherical cavity 45 and the steel ball 451.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 7, the present invention provides a technical solution:
an independent hydraulic clamping and sealing fitting piece comprises a fitting piece body 1, a clamping section 2, an intermediate section 3 and a sealing section 4, wherein a T-shaped cavity 21 is formed in the side wall of the clamping section 2, the upper end and the lower end of the T-shaped cavity 21 are communicated with the inside and the outside of the clamping section 2, a mounting box 22 is fixedly connected to the outer wall of the clamping section 2, the mounting box 22 is communicated with an opening at the upper end of the T-shaped cavity 21, a hydraulic cylinder 23 is fixedly connected to the inside of the mounting box 22, the other end of the hydraulic cylinder 23 is connected with a telescopic rod 24 vertically placed in the T-shaped cavity 21, the telescopic rod 24 is controlled to stretch by the hydraulic cylinder 23, a clamping plate 25 is horizontally placed at the bottom of the T-shaped cavity 21, the clamping plate 25 is fixedly connected with the other end of the telescopic rod 24, the bottom surface of the clamping plate 25 is arranged in an arc shape and is beneficial to clamping and fixing a pipeline surface, and the bottom surface of the clamping plate 25 is matched with the inner wall of the clamping section 2, prevent the in-process that gets into the fitting piece at the pipeline and collide, be convenient for hiding of grip block 25, cavity 31 has been seted up in mid portion section 3's the lateral wall, and cavity 31 has placed electromagnet structure 32, can produce suction, it is fixed to carry out the actuation to the iron pipe, prevent that the iron pipe from taking place to remove, and cavity 31 and T die cavity 21 are located same water flat line, vertical welding has sealing ring 41 in sealing section 4, and towards mid portion 3's one side on the sealing ring 41 seted up ring channel 42, can make partly joint of iron pipe in ring channel 42, the leakproofness has been increased, vertical seting up fluted 43 in ring channel 42's the lateral wall, and fixedly connected with seal structure 44 in the recess 43, can carry out certain support pressure to the inner wall of iron pipe, make it near on sealing section 4's lateral wall, the leakproofness has been increased.
T die cavity 21, mounting box 22, pneumatic cylinder 23, telescopic link 24 and grip block 25 all symmetry set up in the both sides of clamping part section 2, and pneumatic cylinder 23 and telescopic link 24 of here already exist in prior art, do not do the repeated description here, and the equal fixedly connected with antiskid line 251 in bottom surface of grip block 25, when fixing the iron pipe, prevent that grip block 25 from appearing the phenomenon of skidding.
The electromagnet structure 32 comprises an iron block 321, a lead 322, a storage battery 323 and a controller 324, wherein the iron block 321 is horizontally fixed in the cavity 31, the lead 322 is wound on the iron block 321, the bottom of the storage battery 323 is fixedly connected to the outer wall of the middle section 3, the controller 324 is fixedly connected to the top of the storage battery 323, the electromagnet structure 32 is electrified timely through the controller 324, the controller 324 is used for controlling the current to regulate and control the suction force, when the pipeline is drawn out, the controller 324 is closed to be convenient to draw out, and two ends of the lead 322 penetrate through the side wall of the middle section 3 and are communicated with the storage battery 323.
The cavity 31 and the electromagnet structure 32 are symmetrically arranged on both sides of the middle section 3, and the lead 322, the storage battery 323 and the controller 324 are all waterproof structures, so that the matching piece is still applicable when used for underwater iron pipes.
The grooves 43 are distributed annularly around the center of the annular groove 42 in the vertical direction, the grooves 43 are distributed in an array manner in the horizontal direction, and the bottom of the annular groove 42 is fixedly connected with a sealing ring 421 for further sealing the pipe orifice of the iron pipe.
The sealing structure 44 comprises a spring 441, a fixing block 442, a damping tube 443, a baffle 444 and a push rod 445, wherein one end of the spring 441 is fixedly connected to the bottom of the groove 43, the other end of the spring 441 is fixedly connected to the bottom of the fixing block 442, the fixing block 442 is in a trapezoid shape, an iron pipe can be conveniently clamped into the annular groove 42 from the upper side of the fixing block 442, the damping tube 443 is installed inside the spring 441, one end of the damping tube 443 is fixedly connected to the bottom of the groove 43, the baffle 444 is horizontally placed in the damping tube 443, the baffle 444 is slidably connected to the side wall of the damping tube 443, the baffle 444 is fixedly connected to the push rod 445 penetrating through the other end of the damping tube 443, the other end of the push rod 445 is fixedly connected to the bottom of the fixing block 442, ventilation holes 446 are symmetrically arranged on the baffle 444 relative to the push rod 445, a damping structure is formed, and the compensation can be carried out when the iron pipe shakes.
The working principle is as follows: when the device is used by a user, firstly, an iron pipe is led in from the opening at the left end of the fitting body 1, namely the clamping section 2, and moves along the inner walls of the clamping section 2, the middle section 3 and the sealing section 4, when the end part of the iron pipe is abutted against the sealing ring 41 vertically welded in the sealing section 4, the iron pipe stops moving, because the annular groove 42 is arranged at one side of the sealing ring 41, the port of the iron pipe can be clamped in the annular groove 42, the contact area between the iron pipe and the sealing ring 41 is increased, meanwhile, the sealing performance is increased, and the spherical cavity 45 is vertically arranged on the inner wall of the sealing section 4, so that the spherical cavity 45 and the groove 43 are arranged in one-to-one correspondence, and the steel ball 451 which is connected in the spherical cavity 45 in a sliding way is matched, when the iron pipe is inserted into the annular groove 42, the friction force between the iron pipe and the inner wall of the sealing section 4 is reduced, after the iron pipe is inserted, the hydraulic cylinder 23 fixedly connected in the mounting box 22 is opened, so that the telescopic rod 24 placed in the T-shaped cavity 21 can be controlled to extend and retract, the hydraulic cylinder 23 and the telescopic rod 24 at this place are already in the prior art, which is not described herein, the telescopic rod 24 controls the clamping plate 25 fixedly connected to the bottom of the telescopic rod to move towards the iron pipe for clamping, because the bottom surface of the clamping plate 25 is in an arc shape, the contact area between the clamping plate 25 and the iron pipe is increased, which is beneficial for clamping and fixing the pipe surface, and the bottom surface of the clamping plate 25 is fixedly connected with the anti-slip pattern 251, when the iron pipe is fixed, the phenomenon of slipping of the clamping plate 25 is prevented, before the hydraulic cylinder 23 is controlled to clamp the iron pipe, the controller 324 arranged in the middle section 3 is opened, because the cavity 31 is formed in the side wall of the middle section 3, the electromagnet structure 32 is placed in the cavity 31, so that the magnet structure 32 can generate suction force to suck and fix the iron pipe, prevent the iron pipe from moving in the clamping process, the electromagnet structure 32 includes an iron block 321, a wire 322, a storage battery 323 and a controller 324, the iron block 321 is horizontally fixed in the cavity 31, the wire 322 is wound on the iron block 321, the bottom of the storage battery 323 is fixedly connected to the outer wall of the middle section 3, the top of the storage battery 323 is fixedly connected with the controller 324, two ends of the wire 322 are respectively communicated with the storage battery 323 through the side wall of the middle section 3, the electromagnet structure 32 is electrified timely through the controller 324, the suction force is regulated and controlled by controlling the current through the controller 324, meanwhile, when the pipeline is drawn out, the controller 324 is closed to facilitate the drawing out of the iron pipe, in the clamping process of the iron pipe, because the groove 43 is vertically arranged in the side wall of the annular groove 42, the sealing structure 44 is fixedly connected in the groove 43, a certain pressing can be performed on the inner wall of the iron pipe, the sealing structure 44 includes a spring 441, a fixed block 442, a damping tube 443, a baffle 444 and a push rod 445, one end of the spring 441 is fixedly connected to the bottom of the groove 43, the other end of the spring 441 is fixedly connected to the bottom of the fixed block 442, the fixed block 442 is in a trapezoidal arrangement, so that an iron pipe can be clamped into the annular groove 42 from above the fixed block 442, the damping tube 443 is installed inside the spring 441, one end of the damping tube 443 is fixedly connected to the bottom of the groove 43, the baffle 444 is horizontally placed in the damping tube 443, the baffle 444 is slidably connected to the side wall of the damping tube 443, the baffle 444 is fixedly connected to the push rod 445 penetrating through the other end of the damping tube 443, the other end of the push rod 445 is fixedly connected to the bottom of the fixed block 442, ventilation holes 446 are symmetrically arranged on the baffle 444 with respect to the push rod 445, form the damping structure, can offset the effort that its produced when the iron pipe rocked, at the bottom fixedly connected with sealing washer 421 of ring channel 42 simultaneously, further seal the mouth of pipe department of iron pipe.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an independent hydraulic clamping and sealed fitting, includes fitting body (1), clamping part section (2), mid portion section (3) and sealing part section (4), its characterized in that: a T-shaped cavity (21) is formed in the side wall of the clamping section (2), the upper end and the lower end of the T-shaped cavity (21) are communicated with the inside and the outside of the clamping section (2), a mounting box (22) is fixedly connected to the outer wall of the clamping section (2), the mounting box (22) is communicated with an opening at the upper end of the T-shaped cavity (21), a hydraulic cylinder (23) is fixedly connected to the inside of the mounting box (22), the other end of the hydraulic cylinder (23) is connected with a telescopic rod (24) vertically placed in the T-shaped cavity (21), a clamping plate (25) is horizontally placed at the bottom of the T-shaped cavity (21), the clamping plate (25) is fixedly connected with the other end of the telescopic rod (24), the bottom surface of the clamping plate (25) is arranged in an arc shape, the bottom surface of the clamping plate (25) is matched with the inner wall of the clamping section (2), a cavity (31) is formed in the side wall of the middle section (3), an electromagnet structure (32) is placed in the cavity (31), the cavity (31) and the T-shaped cavity (21) are located on the same horizontal line, a sealing ring (41) is vertically welded in the sealing section (4), an annular groove (42) is formed in one side, facing the middle section (3), of the sealing ring (41), a groove (43) is vertically formed in the side wall of the annular groove (42), and a sealing structure (44) is fixedly connected in the groove (43);
the grooves (43) are annularly distributed around the center of the annular groove (42) in the vertical direction, the grooves (43) are distributed in an array mode in the horizontal direction, and the bottom of the annular groove (42) is fixedly connected with a sealing ring (421);
the sealing structure (44) comprises a spring (441), a fixed block (442), a damping tube (443), a baffle plate (444) and a push rod (445), one end of the spring (441) is fixedly connected to the bottom of the groove (43), the other end of the spring (441) is fixedly connected to the bottom of the fixed block (442), the fixed block (442) is arranged in a trapezoid shape, the damping tube (443) is installed inside the spring (441), one end of the damping tube (443) is fixedly connected with the bottom of the groove (43), the baffle plate (444) is horizontally placed in the damping tube (443), the baffle plate (444) is connected with the side wall of the damping tube (443) in a sliding way, the baffle plate (444) is fixedly connected with a push rod (445) which penetrates through the other end of the damping tube (443), and the other end of the push rod (445) is fixedly connected with the bottom of the fixed block (442), the baffle plate (444) is symmetrically provided with ventilation holes (446) relative to the push rod (445);
spherical cavity (45) have vertically been seted up on the inner wall of sealing segment (4), and spherical cavity (45) correspond the setting with recess (43), equal sliding connection has steel ball (451) in spherical cavity (45).
2. A self-contained hydraulic clamping and sealing fitting, according to claim 1, wherein: t die cavity (21), mounting box (22), pneumatic cylinder (23), telescopic link (24) and grip block (25) all the symmetry set up in the both sides of clamping part section (2), and the equal fixedly connected with antiskid line (251) in bottom surface of grip block (25).
3. A self-contained hydraulic clamping and sealing fitting, according to claim 1, wherein: electromagnet structure (32) include iron plate (321), wire (322), battery (323) and controller (324), iron plate (321) level is fixed in cavity (31), and wire (322) winding is on iron plate (321), the bottom fixed connection of battery (323) is on the outer wall of mid portion (3), and the top fixedly connected with controller (324) of battery (323), the both ends of wire (322) link up the lateral wall and the battery (323) intercommunication of mid portion (3) respectively.
4. A self-contained, hydraulically-clamped and sealed fitting, as claimed in claim 3, wherein: the cavity (31) and the electromagnet structure (32) are symmetrically arranged on two sides of the middle section (3), and the lead (322), the storage battery (323) and the controller (324) are all waterproof structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011211944.5A CN112303355B (en) | 2020-11-03 | 2020-11-03 | Independent hydraulic clamping and sealing fitting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011211944.5A CN112303355B (en) | 2020-11-03 | 2020-11-03 | Independent hydraulic clamping and sealing fitting piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112303355A CN112303355A (en) | 2021-02-02 |
| CN112303355B true CN112303355B (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011211944.5A Active CN112303355B (en) | 2020-11-03 | 2020-11-03 | Independent hydraulic clamping and sealing fitting piece |
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| CN (1) | CN112303355B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565327A (en) * | 2021-08-24 | 2021-10-29 | 王永强 | External roof concrete placement pipe closing device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3704033A (en) * | 1971-01-15 | 1972-11-28 | Hydro Tech Services Inc | Connector for tubular members |
| US3830526A (en) * | 1973-04-26 | 1974-08-20 | Hydrotech Int Inc | Apparatus and method for making sub-sea connections |
| JPH06159566A (en) * | 1992-11-26 | 1994-06-07 | Mitsubishi Plastics Ind Ltd | Coming-off preventive pipe joint |
| CN206958424U (en) * | 2017-06-02 | 2018-02-02 | 江西省得一康管业有限公司 | Buried pipe quick union |
| US10571061B2 (en) * | 2018-01-16 | 2020-02-25 | The Pipe Line Development Company | Independently hydraulically clamped and sealed fitting |
| CN108533856B (en) * | 2018-07-06 | 2020-02-21 | 合肥中安机械电器有限公司 | Compressor refrigeration pipe fitting of convenient equipment |
| CN208764503U (en) * | 2018-08-27 | 2019-04-19 | 潍坊中亿给水设备有限公司 | A kind of attachment device that the non-negative pressure water-supply device of good airproof performance uses |
| CN211599824U (en) * | 2019-10-23 | 2020-09-29 | 南京创通管业有限公司 | Clamping and pressing stainless steel pipe fitting connecting device |
| CN211501953U (en) * | 2019-12-26 | 2020-09-15 | 天津博奥泰密封科技有限公司 | Bidirectional assembling sealing device |
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2020
- 2020-11-03 CN CN202011211944.5A patent/CN112303355B/en active Active
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Effective date of registration: 20220510 Address after: 273500 No. 4 commercial facade room of Wuliying community, Beisu Town, Zoucheng City, Jining City, Shandong Province from east to West Applicant after: Jining Xinfuyuan Hydraulic Technology Co.,Ltd. Address before: 312000 No. 666, East Xinchang Avenue, Xinchang County, Shaoxing City, Zhejiang Province Applicant before: Xiang Bin |
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