CN111963362B - Continuous surge power generation equipment - Google Patents
Continuous surge power generation equipment Download PDFInfo
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- CN111963362B CN111963362B CN202010832948.9A CN202010832948A CN111963362B CN 111963362 B CN111963362 B CN 111963362B CN 202010832948 A CN202010832948 A CN 202010832948A CN 111963362 B CN111963362 B CN 111963362B
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- 238000010248 power generation Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000009434 installation Methods 0.000 claims abstract description 24
- 238000005381 potential energy Methods 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000007667 floating Methods 0.000 claims description 19
- 239000013535 sea water Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/22—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the flow of water resulting from wave movements to drive a motor or turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B17/00—Other machines or engines
- F03B17/02—Other machines or engines using hydrostatic thrust
- F03B17/025—Other machines or engines using hydrostatic thrust and reciprocating motion
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
- G08B21/084—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water by monitoring physical movement characteristics of the water
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses continuous surge power generation equipment which comprises an installation platform body, wherein a liquid storage tank and a placing tank are respectively arranged in the installation platform body, a piston plate is elastically connected in the liquid storage tank through a return spring, the side wall of the piston plate is in sealed sliding connection with the wall of the liquid storage tank, a sealed space formed by the upper end surface of the piston plate and the liquid storage tank is a driving area, a liquid guide pipe is communicated between the driving area and the outside, a plurality of fan blades are uniformly and rotatably connected in the placing tank through a horizontally arranged rotating shaft, a power generating set is installed in the installation platform body, the input end of the power generating set is connected with the rotating shaft, a water inlet is communicated between the upper end of the side wall of the placing tank and one side face of the installation platform body, and a liquid inlet pipe is communicated between the top wall in the placing tank and the driving area. The invention not only can further utilize the kinetic energy and potential energy of the water body to improve the efficiency of surge power generation, but also has the function of water level monitoring and avoids the occurrence of water fall accidents.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to continuous surge power generation equipment.
Background
Conventional energy in the society at present refers to energy which is mature in technology and is utilized on a large scale, while new energy generally refers to energy which is not utilized on a large scale and is actively researched and developed, and solar energy, wind energy, geothermal energy, hydrogen energy and ocean energy are categories with larger research and development utilization degree in the new energy at present, wherein the ocean energy belongs to clean energy, and after the ocean energy is developed, the influence of the ocean energy on environmental pollution is small, so the ocean energy is more and more valued by people.
The surge generator is the existing relatively common ocean energy utilization equipment, which mainly converts kinetic energy and potential energy of seawater or river water into electric energy, however, the existing surge generator is usually an intermittent DC generator, and can only drive a rotor to rotate in a single direction by fluctuation or fall back of waves to generate electricity, the generating efficiency is low, although some surge AC generators are also provided, the rotor can not only consume a large amount of internal energy in positive rotation and reverse rotation in a short time, but also can affect the operation of a generator set, and therefore, a continuous surge generating equipment is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the defect that the existing surge generator in the prior art is low in generating efficiency, and provides continuous surge generating equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a continuous surge power generation device comprises an installation platform body, wherein a liquid storage tank and a placement tank are respectively arranged in the installation platform body, a piston plate is elastically connected in the liquid storage tank through a reset spring, the side wall of the piston plate is in sealing sliding connection with the wall of the liquid storage tank, a sealed space formed by the upper end surface of the piston plate and the liquid storage tank is a driving area, a liquid guide pipe is communicated and arranged between the driving area and the outside, a plurality of fan blades are uniformly and rotatably connected in the placement tank through a horizontally arranged rotating shaft, a power generation unit is arranged in the installation platform body, the input end of the power generation unit is connected with the rotating shaft, a water inlet is communicated and arranged between the upper end of the side wall of the placement tank and one side face of the installation platform body, a liquid inlet pipe is communicated and arranged between the top wall of the placement tank and the driving area, a liquid outlet pipe is communicated and arranged between the bottom wall of the placement tank and the outside, and an installation groove is arranged on one side face of the installation platform body, a polished rod is vertically and fixedly arranged in the mounting groove, a floating block is slidably sleeved on the polished rod, and a traction wire is fixedly connected between the floating block and the piston plate.
Preferably, a first check valve, a second check valve and a third check valve are respectively arranged in the liquid inlet pipe, the liquid discharge pipe and the liquid guide pipe.
Preferably, the top wall is equipped with the piezoelectric patches in the mounting groove, installation stage body up end is equipped with warning device, and passes through wire electric connection between warning device and the piezoelectric patches.
The invention has the beneficial effects that:
1. through setting up piston plate, reset spring and kicking block, utilize the buoyancy of water to the kicking block, do work to reset spring and partial water when the water fluctuation generates electricity to generating set function, when the water falls back, reset spring and partial water release internal energy supply generating set for generating set can be continuous electricity generation, thereby can be further utilize the kinetic energy and the potential energy of water, improve the efficiency of surge electricity generation.
2. Through setting up piezoelectric patches and warning device, when the water fluctuation drives the floating block and upwards moves to peak extrusion piezoelectric patches in the mounting groove, the piezoelectric patches converts mechanical energy into electric energy and transmits to warning device department, and warning device receives this signal back circuit and switches on and send out warning signal to can warn near installation stage body personnel wave great, prevent to take place the accident of falling into water, still have the water level monitoring effect simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of a continuous surge power generation device in an embodiment 1 according to the present invention;
fig. 2 is a schematic side view of a part of the structure of the inside of the placing groove in embodiment 1 of the continuous surge power generation equipment provided by the invention;
fig. 3 is a schematic structural diagram of a continuous surge power generation device in embodiment 2 of the present invention.
In the figure: the device comprises an installation table body 1, a liquid storage tank 2, a return spring 3, a piston plate 4, an installation groove 5, a polish rod 6, a floating block 7, a traction line 8, a placement groove 9, fan blades 10, a liquid inlet pipe 11, a liquid outlet pipe 12, a liquid guide pipe 13, a water inlet 14, a warning device 15 and a piezoelectric plate 16.
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.
Example 1
Referring to fig. 1-2, a continuous surge power generation device comprises an installation table body 1 located at a river side or a sea side, a liquid storage tank 2 and a placement tank 9 are respectively arranged in the installation table body 1, a top wall in the liquid storage tank 2 is elastically connected with a piston plate 4 through a return spring 3, the side wall of the piston plate 4 is in sealed sliding connection with the wall of the liquid storage tank 2, a sealed space formed by the upper end surface of the piston plate 4 and the liquid storage tank 2 is a driving area, a liquid guide pipe 13 is communicated between the driving area and the outside, one end of the liquid guide pipe 13 far away from the driving area is submerged below the outside water surface, a plurality of fan blades 10 are uniformly and rotatably connected in the placement tank 9 through a horizontally arranged rotating shaft, a power generation unit is installed in the installation table body 1, the input end of the power generation unit is fixedly connected with the rotating shaft, a water inlet 14 is communicated between the upper end of the side wall of the placement tank 9 and one side surface of the installation table body 1, and the water inlet 14 faces the river or sea water, when the pressure surface of the river or sea water is gushed, the water flow can enter the placing groove 9 through the water inlet 14 and impact a plurality of fan blades 10, a liquid inlet pipe 11 is communicated between the top wall in the placing groove 9 and the driving area, a liquid discharge pipe 12 is communicated between the bottom wall in the placing groove 9 and the outside, it is worth noting that an opening at one end of the liquid discharge pipe 12 far away from the placing groove 9 is always positioned above the liquid level of the outside water body, thereby ensuring that the water body in the placing groove 9 can be normally discharged without being influenced by the outside air pressure, a mounting groove 5 is arranged on one side surface of the mounting table body 1 facing the river or sea water, a polish rod 6 is vertically and fixedly arranged in the mounting groove 5, a floating block 7 is slidably sleeved on the polish rod 6, a traction line 8 is fixedly connected between the floating block 7 and the lower end surface of the piston plate 4, the floating block 7 can be made of porous polyolefin material, and has low density, the buoyancy experienced is greater for the same displacement volume.
In this embodiment, a first check valve, a second check valve and a third check valve are respectively installed in the liquid inlet pipe 11, the liquid discharge pipe 12 and the liquid guide pipe 13, the first check valve only allows gas or liquid in the driving area to enter the placing groove 9 through the liquid inlet pipe 11, the second check valve only allows gas or liquid in the placing groove 9 to be discharged to the outside through the liquid discharge pipe 12, thereby external water enters the placing groove 9 through the liquid discharge pipe 12 during surging of a surface wave to affect the operation of the fan blades 10, and the third check valve only allows external gas or liquid to enter the driving area through the liquid guide pipe 13.
The present embodiment can illustrate the functional principle thereof by the following operation modes: because the floating block 7 floats on the water surface all the time under the action of buoyancy, when the river or sea water fluctuates, the water body drives the floating block 7 to move upwards, the floating block 7 drives the piston plate 4 to move downwards in the liquid storage tank 2 through the traction line 8 and stretches the return spring 3, negative pressure is generated in the driving area, external water body is sucked into the driving area through the liquid guide pipe 13, meanwhile, the fluctuated water body reaches a certain height and then enters the placing tank 9 through the water inlet 14 at a high speed and impacts the fan blades 10 in the placing tank 9 to enable the fan blades 10 to synchronously rotate anticlockwise in the placing tank 9, the fan blades 10 drive the rotating shaft to rotate, the generator set converts the kinetic energy of the rotating shaft into electric energy and stores the electric energy, then the water body falls back, the liquid level of the water body is lower than the water inlet 14, the external water body cannot enter the placing tank 9 through the water inlet 14, but falls along with the water body, the floating block 7 moves downwards synchronously, the piston plate 4 moves upwards in the liquid storage tank 2 to reset under the elastic action of the reset spring 3, then the water body in the driving area is extruded into the placing groove 9 through the liquid inlet pipe 11 to impact the fan blades 10, so that the fan blades 10 continue to keep anticlockwise rotation, the rotating shaft keeps continuous same-direction rotation, the generator set can generate power continuously, the reciprocating motion is realized, the kinetic energy and the potential energy of the water body can be further utilized, and the efficiency of surge power generation is improved.
Example 2
Referring to fig. 3, the present embodiment differs from embodiment 1 in that: roof is equipped with piezoelectric patches 16 in mounting groove 5, and 16 overcoat of piezoelectric patches is equipped with the waterproof layer, 1 up end of installation stage is equipped with warning device 15, and pass through wire electric connection between warning device 15 and the piezoelectric patches 16, it is worth noting, inside battery and the signal reception module of being equipped with of warning device 15, when water fluctuation drive floating block 7 upwards move to peak extrusion piezoelectric patches 16 in mounting groove 5, piezoelectric patches 16 convert mechanical energy into electric energy and transmit to warning device 15 department, circuit switches on and sends alarm signal after warning device 15 receives this signal, thereby can warn that near 1 personnel's wave of installation stage is great, prevent to take place the water fall accident, still have the water level monitoring effect simultaneously.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (1)
1. A continuous surge power generation device comprises an installation table body (1) and is characterized in that a liquid storage tank (2) and a placement groove (9) are respectively arranged in the installation table body (1), a piston plate (4) is elastically connected in the liquid storage tank (2) through a reset spring (3), the side wall of the piston plate (4) is in sealing sliding connection with the wall of the liquid storage tank (2), a sealing space formed by the upper end face of the piston plate (4) and the liquid storage tank (2) is a driving area, a liquid guide pipe (13) is communicated between the driving area and the outside, a plurality of fan blades (10) are uniformly and rotatably connected in the placement groove (9) through a horizontally arranged rotating shaft, a power generation set is arranged in the installation table body (1), the input end of the power generation set is connected with the rotating shaft, a water inlet (14) is communicated between the upper end of the side wall of the placement groove (9) and one side face of the installation table body (1), a liquid inlet pipe (11) is communicated between the inner top wall of the placing groove (9) and the driving area, a liquid discharge pipe (12) is communicated between the inner bottom wall of the placing groove (9) and the outside, a mounting groove (5) is formed in one side surface of the mounting table body (1), a polished rod (6) is vertically and fixedly arranged in the mounting groove (5), a floating block (7) is slidably sleeved on the polished rod (6), and a traction line (8) is fixedly connected between the floating block (7) and the piston plate (4);
a first one-way valve, a second one-way valve and a third one-way valve are respectively arranged in the liquid inlet pipe (11), the liquid discharge pipe (12) and the liquid guide pipe (13);
the piezoelectric sheet (16) is arranged on the inner top wall of the mounting groove (5), the warning device (15) is arranged on the upper end face of the mounting table body (1), and the warning device (15) is electrically connected with the piezoelectric sheet (16) through a lead;
when in use, as the floating block 7 floats on the water surface all the time under the action of buoyancy, when river water or sea water fluctuates, the water body drives the floating block 7 to move upwards, the floating block 7 drives the piston plate 4 to move downwards in the liquid storage tank 2 through the traction line 8 and stretches the return spring 3, negative pressure is generated in the driving area, external water body is sucked into the driving area through the liquid guide pipe 13, meanwhile, the fluctuated water body reaches a certain height and then enters the placing tank 9 through the water inlet 14 at a high speed and impacts the fan blades 10 in the placing tank 9 to enable the fan blades 10 to synchronously rotate anticlockwise in the placing tank 9, the fan blades 10 drive the rotating shaft to rotate, the generator set converts the kinetic energy of the rotating shaft into electric energy and stores the electric energy, then the water body falls back, the liquid level of the water body is lower than the water inlet 14, the external water body cannot enter the placing tank 9 through the water inlet 14, but falls back along with the water body, the floating block 7 synchronously moves downwards, the piston plate 4 moves upwards in the liquid storage tank 2 to reset under the action of the elastic force of the reset spring 3, the water body in the driving area is squeezed into the placing groove 9 through the liquid inlet pipe 11 to impact the fan blades 10, so that the fan blades 10 continuously keep anticlockwise rotation, the rotating shaft keeps continuous same-direction rotation, the generator set can continuously generate electricity, and the kinetic energy and the potential energy of the water body can be further utilized by reciprocating in such a way, and the efficiency of surge power generation is improved;
when the water body fluctuates and drives the floating block 7 to move upwards in the mounting groove 5 to the highest point to extrude the piezoelectric sheet 16, the piezoelectric sheet 16 converts mechanical energy into electric energy and transmits the electric energy to the warning device 15, the warning device 15 receives the signal and then the circuit is switched on and sends out a warning signal, so that people nearby the mounting table body 1 can be warned that the wave is large, water falling accidents are prevented, and meanwhile, the water level monitoring effect is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832948.9A CN111963362B (en) | 2020-08-18 | 2020-08-18 | Continuous surge power generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832948.9A CN111963362B (en) | 2020-08-18 | 2020-08-18 | Continuous surge power generation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN111963362A CN111963362A (en) | 2020-11-20 |
| CN111963362B true CN111963362B (en) | 2021-12-10 |
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| CN202010832948.9A Active CN111963362B (en) | 2020-08-18 | 2020-08-18 | Continuous surge power generation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112628064B (en) * | 2021-01-13 | 2022-05-27 | 恩施致盛水电有限公司 | Hydroelectric generation device capable of discharging sundries in river |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8084873B2 (en) * | 2008-01-07 | 2011-12-27 | Carter Richard W | Induced surface flow wave energy converter |
| CN102140996A (en) * | 2011-05-05 | 2011-08-03 | 东南大学 | Wave power device |
| CN203272008U (en) * | 2013-04-24 | 2013-11-06 | 中国水利水电科学研究院 | Coast wave energy rotational flow power generation device |
| CN104564507A (en) * | 2013-10-16 | 2015-04-29 | 周峰 | Hydraulic pressure type tidal energy power-generating device |
| CN106321338A (en) * | 2016-11-22 | 2017-01-11 | 淮北智淮科技有限公司 | Floating wave power generation device |
| CN110671259B (en) * | 2019-11-06 | 2020-10-27 | 新昌县姝达电力科技有限公司 | Wave energy power generation device |
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Effective date of registration: 20210923 Address after: 314000 428, 4th floor, building 5, No. 299, Hangfu Road, Chongfu Town, Tongxiang City, Jiaxing City, Zhejiang Province Applicant after: Jiaxing jiumalan Technology Co.,Ltd. Address before: 266000 No. 117, Zijinshan Road, Huangdao District, Qingdao, Shandong Applicant before: Ma Congcong |
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