CN108643260B - Water conservancy dredging system and adjusting method thereof - Google Patents
Water conservancy dredging system and adjusting method thereof Download PDFInfo
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- CN108643260B CN108643260B CN201810493063.3A CN201810493063A CN108643260B CN 108643260 B CN108643260 B CN 108643260B CN 201810493063 A CN201810493063 A CN 201810493063A CN 108643260 B CN108643260 B CN 108643260B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a water conservancy dredging system and a mediation method thereof, wherein the water conservancy dredging system comprises the following steps: the water level detection device comprises a pressure sensor and a control device, wherein the pressure sensor is used for detecting whether the critical position of the surface of the dam body reaches a critical value; the signal transmitter is used for transmitting the critical value information detected by the pressure sensor; the control device includes: the first signal receiver receives water level information transmitted by the signal transmitter; the dredging device controller is used for controlling the starting and stopping of the dredging device; the terminal system comprises a second signal receiver for receiving the critical value information transmitted by the signal transmitter; the central processing unit stores and analyzes the critical value information received by the second signal receiver; the manual operation table is connected with the central processing unit and can display and call the critical value information of the central processing unit; the manual operation platform is also connected with the dredging device controller and is used for manually controlling the starting and stopping of the dredging device controller. This water conservancy desilting system can intelligent clearance dam body siltation and can the intelligent monitoring dam body.
Description
Technical Field
The invention relates to a hydraulic engineering prevention and control system, in particular to a hydraulic dredging system suitable for a dam and an adjusting method thereof.
Background
Along with the development of economic society, the demand of human beings on resources such as energy, water source is increasing more and more, and building hydraulic engineering in areas such as rivers and lakes becomes a big measure that people solve energy, water resource problem at present, wherein, hydraulic engineering's building can involve the dam basically, but along with the time lapse, the dam body intensity of the dam body of many dams is influenced because of the siltation of sediment, mud leads to the dam body, and its retaining, power generation function also can be influenced to different extents, can even cause permanent harm. In addition, hydraulic engineering is generally built in an upstream area, instability of the hydraulic engineering can greatly threaten the survival and life of downstream residents, especially in seasons with high rainfall, upstream flowing water can bring a large amount of sediments, the burden of a dam body can be greatly increased in a short time, and further serious potential safety hazards are caused. Among the prior art, people wash sand through the flood discharge, artifical salvage, the siltation of dam body is got rid of to modes such as machine extraction, but the height of the siltation of real time monitoring siltation on the dam body of unable, and above-mentioned mode is troublesome, and the mode such as washing sand through the flood discharge can cause the great reduction scheduling problem of the water storage capacity in non-rainy season reservoir area, in addition, because the unable real time monitoring to the height of siltation and can't in time handle the siltation, the potential safety hazard of dam body is also along with increasing.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a water conservancy dredging system capable of intelligently detecting the sediment accumulation height information and remotely controlling the water conservancy dredging system and an adjusting method thereof.
In order to achieve the above object, the present invention adopts the following technical solutions:
a water conservancy dredging system, comprising: the monitoring device is used for detecting the height of sludge deposited on the surface of the dam body in water, and the height of the sludge has a critical position influencing the strength of the dam body; the dredging device is used for discharging at least part of the sludge on the surface of the dam body to a water body; the control device is connected with the dredging device and controls the dredging device; the terminal system is connected with the monitoring device and the control device; the monitoring device includes: the pressure sensor is used for detecting a critical value of a critical position of the surface of the dam body; the signal transmitter is used for transmitting the critical value information detected by the pressure sensor; the control device includes: the first signal receiver is connected with the signal transmitter to receive the critical value information transmitted by the signal transmitter; the dredging device controller is used for controlling the starting and stopping of the dredging device according to the critical value information received by the first signal receiver; the terminal system includes: the second signal receiver is connected with the signal transmitter to receive the critical value information transmitted by the signal transmitter; the alarm is used for giving an alarm when the pressure of the dam body reaches a preset maximum value; the central processing unit stores and analyzes the critical value information received by the second signal receiver; the manual operation platform is connected with the central processing unit and can display and call the critical value information of the central processing unit; the manual operation platform is also connected with the dredging device controller and is used for manually controlling the starting and stopping of the dredging device controller. Wherein the number of pressure sensors is at least three, wherein at least three pressure sensors are capable of detecting different critical values.
Further, each pressure sensor is used to detect a different critical value at a different critical position of the dam.
Further, the manual operation platform can control the dredging device controller to control the dredging device.
Furthermore, the terminal system can also be in telecommunication connection with an additionally arranged self-service terminal, and the self-service terminal is used for remotely controlling the water conservancy desilting system.
Further, the dredging device comprises: the sludge suction pump is used for cleaning sludge; the hydraulic system is used for adjusting the position of the silt suction pump; and the aggregate collection system is used for intensively treating the sludge.
Furtherly, inhale the silt pump and form and inhale the silt end, inhale the silt end and include: a turning blade for turning the sludge; a sludge suction port for absorbing sludge; the power output mechanism is provided with an output shaft and is used for driving the turning blade; the protective net is used for preventing large-sized barriers from entering the sludge suction port.
Further, flipping the blade includes: a main body part: formed around the output shaft; and the cutter teeth are connected to the main body part and deviate from the plane of the main body part.
Further, the cutter teeth are formed around the main body portion, and the angle of the cutter teeth deviating from the plane of the main body portion is greater than or equal to 90 degrees and smaller than or equal to 120 degrees.
Further, water conservancy desilting system still includes reserve desilting device.
An adjusting method of a water conservancy dredging system is characterized by at least comprising the following steps:
step one, starting a water conservancy dredging system;
secondly, detecting whether the surface of the dam body reaches a first critical value of a first critical position by a pressure sensor; if yes, carrying out the third step, otherwise, continuing to carry out the second step;
thirdly, detecting whether the surface of the dam body reaches a second critical value of a second critical position by using a pressure sensor; if yes, the fourth step is carried out, otherwise, the third step is continued;
fourthly, detecting whether the surface of the dam body reaches a third critical value of a third critical position by a pressure sensor; if yes, carrying out the sixth step, otherwise, carrying out the fifth step;
fifthly, controlling the starting of the dredging device by the dredging device controller to start dredging; stopping the dredging device until the surface of the dam body detected by the pressure sensor reaches the first critical value of the first critical position again;
and sixthly, controlling the dredging device and the standby dredging device to be started simultaneously by the dredging device controller until the pressure sensor detects that the surface of the dam body reaches the first critical value of the first critical position again, and stopping the dredging device.
The invention has the advantages that: this desilting system and device are simpler, can real-time detection sediment siltation height and can remote control desilting to realize real-time desilting, effectively reduce the potential safety hazard that the dam caused to low reaches, practice thrift more economically, simplify more in function, it is more effective in the effect.
Drawings
FIG. 1 is a block diagram of the water conservancy dredging system of the present invention;
FIG. 2 is a schematic structural view of the water conservancy dredging device in FIG. 1;
FIG. 3 is a schematic view of the hydraulic dredging device of FIG. 2 mounted to a dam body;
fig. 4 is a flow chart of the adjusting method applicable to the water conservancy dredging system.
Detailed Description
The hydraulic dredging system 100 shown in fig. 1 can be used to monitor the sludge 14 accumulation level of the dam and to clean the sludge 14 accumulation level in real time. It is understood that the hydraulic dredging system 100 of the present invention is not only suitable for use in dams, but also for use in hydraulic engineering such as river banks, lake banks, etc.
As shown in fig. 1, the water conservancy dredging system 100 mainly includes: monitoring device 10, control device 11, dredging device 12 and terminal system 13.
The monitoring device 10 is used to monitor the sludge 14 level at the surface of the dam and send information in the water to the control device 11 and the end service device. The information in the water body specifically comprises the pressure on the surface of the dam body, the visibility of the water body and other information. We monitor the sludge height of the sludge 14 by monitoring the pressure at the surface of the dam to achieve monitoring and dredging. When the information is transmitted to the control device 11, the control device 11 controls whether to start the dredging device 12 to carry out dredging operation; meanwhile, when the signal is transmitted to the terminal service device, the terminal system 13 analyzes whether to alarm and starts the early warning system.
The water conservancy dredging system and the device thereof are specifically introduced as follows:
as shown in fig. 2 to 4, the monitoring device 10 specifically includes: the pressure sensor 101 and the signal transmitter 102 are integrated, and the pressure sensor 101 and the signal transmitter 102 are installed on the surface of the dam body on one side of the water body. Calculating critical positions which affect the dam body and critical values corresponding to the critical positions according to the structural strength of the dam body, wherein the critical positions comprise a first critical value corresponding to a first critical position 101a, a second critical value corresponding to a second critical position 101b and a third critical value corresponding to a third critical position 101 c; the first critical position 101a is located at the deepest part of the water body, the sludge accumulation at the position cannot cause damage to the whole structure of the dam body, and meanwhile, a first critical value is preset at the position, and the first critical value can remind a system that the bottom of the dam body is subjected to sludge 14 accumulation but does not cause damage; the second critical position 101b can be preset to a certain interval according to the strength of the dam body, when sludge is accumulated to the position, the dam body is damaged to some extent, dredging operation needs to be carried out, the dam body is prevented from being further damaged, meanwhile, the second critical value preset at the position can remind a system that the dam body is influenced by 14 deposition of sludge, and immediate dredging is needed; the third critical position 101c is an upper limit value of the dam body capable of acknowledging the influence of the sludge 14 deposition, when sludge is deposited to the position, the sludge will cause great damage to the dam body, the rapid dredging operation is required, the structure of the dam body is prevented from being influenced, and the destructive influence on the dam body is further caused, and meanwhile, a third critical value preset at the position will remind a system that the dam body is influenced by the sludge 14 deposition and needs rapid dredging; the critical values are preset in the pressure sensor 101, the pressure sensor 101 is installed at each critical position of the surface of the dam, and when the pressure on the surface of the dam reaches the preset value, the signal is transmitted to the control system and the terminal service system through the signal transmitter 102. Of course, it can be understood that the monitoring device 10 itself has a certain structural strength and structural stability, and also has a certain anti-interference capability; the pressure sensor 101 and the signal transmitter 102 may also be formed separately, which may reduce the structural strength requirements of the signal transmitter 102. In this embodiment, the signal transmitter 102 is separately connected to the pressure sensor 101, and the signal transmitter 102 is embedded in the dam and electrically connected to the pressure sensor 101, so that stability and accuracy of signal transmission can be ensured.
The dredging device 12 includes: a silt suction pump 121, a hydraulic system 123 and an aggregate collection system 124. The sludge suction pump 121 is provided with a sludge suction end 122, and the sludge suction end 122 is provided with a power output mechanism 122a, a turning blade 122b, a protective net 122f and a sludge suction opening 122 g. Specifically, the power output mechanism 122a is a motor arranged in a streamlined shell, the streamlined shell is convenient for sludge 14 to smoothly flow into the sludge suction end 122 in the dredging process without being blocked, the motor is provided with a motor shaft, and the motor shaft is integrally formed or fixedly connected with a connecting seat in the extending direction of the motor shaft and is used for connecting the turning blade 122 b; the turning blade 122b is formed with a connecting portion 122c and a main body portion 122d, the connecting portion 122c is used for fixedly connecting the turning blade 122b to the connecting seat, so that the turning blade 122b can rotate at a high speed by the motor shaft, thereby turning the sludge 14, mixing the sludge 14 and the water into a slurry state, and facilitating the sludge suction pump 121 to suck and pump the sludge 14 to the collection system 124 in time. More specifically, the main body 122d of the turning blade 122b extends around the motor shaft and is formed with a plurality of cutter teeth 122e, and the cutter teeth 122e form a bend in the extension plane, thereby more efficiently turning the sludge 14 and improving the sludge suction efficiency. Further, the sludge suction port 122g is fixedly connected with a protective net 122f, and the protective net 122f is used for blocking large-sized obstacles and preventing the obstacles from entering the sludge suction port 122g to block the flow of slurry; meanwhile, the motor is internally provided with the overload protection system, when the blade is stuck due to a dangerous case, the motor is automatically stopped, and destructive influence on the whole system is avoided. It is understood that the protection mesh 122f is formed with a through hole through which the output shaft passes at a position of the output shaft of the motor shaft. The hydraulic system 123 provides lifting power for the whole silt suction pump 121, when silt is higher than a critical dangerous value in a short time, the hydraulic system 123 automatically lifts the silt suction pump 121 to one side, away from the critical surface of the water body and the silt 14, of the highest end of the silt 14, and meanwhile, rapid dredging operation is carried out, so that the blade can be effectively prevented from turning over the critical surface of the water body and the silt 14 to cause secondary pollution to the water body. The collection system 124 is embodied as a large settling tank for storing the sludge 14 from the sludge suction pump 121 and performing settling separation to thereby perform centralized treatment of the sludge 14.
The control device 11 includes: the first signal receiver 111 is electrically connected with the dredging device controller 112, the first signal receiver 111 is electrically connected with the dredging device 12 controller 112, the first signal receiver 111 receives the signal transmitted by the signal transmitter 102 and transmits the signal to the dredging device controller 112, and the dredging device controller 112 controls the start and the stop of the dredging device 12. Specifically, when the dredging device controller 112 receives the first threshold value from the first threshold position 101a of the pressure sensor 101, the dredging device 12 is not activated; when the dredging device controller 112 receives the second threshold value from the second threshold position 101b of the pressure sensor 101, the dredging device 12 is started, and when the first threshold value from the first threshold position 101a of the pressure sensor 101 is received again, the dredging device 12 is closed; the water conservancy dredging system 100 is also provided with a standby dredging device, when the dredging device controller 112 receives a third critical value from a third critical position 101c of the pressure sensor 101, the dredging device 12 is started, and the standby dredging device is started at the same time, so that rapid dredging is realized, and huge threats to the dam in a short time when dangerous situations such as flood peak passing or upstream debris flow occur are avoided; the dredging device 12 and the backup dredging device are closed until the first threshold value from the first threshold position 101a of the pressure sensor 101 is received again.
The terminal system 13 includes: the second signal receiver 131, the central processing unit 132 and the manual operation console 133, the second signal receiver 131 is electrically connected with the signal transmitter 102 and is used for receiving the information transmitted from the signal transmitter 102, and the second signal receiver 131 is also electrically connected with the central processing unit 132 and is used for transmitting the information to the central processing unit 132 for analysis. The central processor 132 comprises a data storage module and a data analysis module, wherein the data storage module is used for storing the information received in real time and is available for calling and outputting; the data analysis module is used for analyzing the real-time information, analyzing the monthly condition, the quarterly condition and the annual condition of the sediment 14 deposition position information and storing the analysis results in the data storage module so that a user can call and check the analysis results at any time, and the user can manage the water body according to the analysis results, thereby being capable of managing the water body more intelligently. The manual operation console 133 is located in the terminal system 13, and can display and retrieve the information in the central processing unit 132, and perform manual intervention and analysis on the information, and on the other hand, the manual operation console 133 is electrically connected with the dredging device controller 112, and can obtain the highest control authority of the dredging device controller 112, that is, the manual operation console can control the dredging device controller 112 to control the dredging device 12 and the standby dredging device; it is understood that when the dredging device controller 112 is started by accident, or the dredging device controller 112 cannot be stopped by accident, the manual operation platform 133 can be used to perform forced start or stop. Further, the central processing unit 132 is further connected to an alarm device 134, and when receiving the third critical value from the third critical position 101c, the alarm device 134 is activated to remind the staff that the dam has been damaged greatly and needs to be desilted quickly. The manual operation platform 133 can also be in telecommunication connection with a self-service terminal, and the autonomous service terminal can be a mobile phone, a microcontroller and the like, so that the manual remote control manual operation platform is realized, and water body information is monitored in real time, so that the water conservancy dredging system and the water conservancy dredging device can also be suitable for small and medium-sized dams which are unattended or dams, river banks and the like which are far away from human residence sites.
As shown in fig. 4, the invention also provides an adjusting method suitable for the above water conservancy dredging system and device, which comprises the following steps:
firstly, starting a system;
secondly, the pressure sensor 101 detects whether the surface of the dam body reaches a first critical value of a first critical position 101 a; if yes, carrying out the third step, otherwise, continuing to carry out the second step;
thirdly, the pressure sensor 101 detects whether the surface of the dam body reaches a second critical value of a second critical position 101 b; if yes, the fourth step is carried out, otherwise, the third step is continued;
fourthly, the pressure sensor 101 detects whether the surface of the dam body reaches a third critical value of a third critical position 101 c; if yes, carrying out the sixth step, otherwise, carrying out the fifth step;
fifthly, the dredging device controller 112 controls the starting of the dredging device 12 to start dredging; until the pressure sensor 101 detects that the surface of the dam body reaches the first critical value of the first critical position 101a again, stopping the dredging device 12;
in the sixth step, the dredging device controller 112 controls the dredging device 12 and the standby dredging device to be started simultaneously until the pressure sensor 101 detects that the surface of the dam body reaches the first critical value of the first critical position 101a again, and the dredging device 12 is stopped.
The steps can effectively manage the sludge 14 on the surface of the dam body, and reduce the threat to the surface of the dam body caused by special conditions. When the sludge 14 with different heights is accumulated on the surface of the dam body, the cleaning can be carried out in a grading way, namely when the sludge 14 reaches the first critical value of the first critical position 101a, the dredging device controller 112 controls the dredging device 12 not to dredge; when the sludge 14 reaches the second threshold value where the sludge 14 reaches the second threshold position 101b, the dredging device controller 112 controls the dredging device 12 to start dredging; when the sludge 14 reaches the third threshold value where the sludge 14 reaches the third threshold position 101c, the dredging device controller 112 starts the dredging device 12 and the backup dredging device to quickly dredge simultaneously.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. A water conservancy dredging system, comprising:
the monitoring device is used for detecting the height of sludge deposited on the surface of the dam body in water, and the height of the sludge has a critical position influencing the strength of the dam body;
the dredging device is used for discharging at least part of the sludge on the surface of the dam body to the water body;
the control device is connected with the dredging device and controls the dredging device;
the terminal system is connected with the monitoring device and the control device;
the monitoring device includes:
the pressure sensor is used for detecting a critical value of the critical position on the surface of the dam body;
the signal transmitter is used for transmitting critical value information detected by the pressure sensor;
the control device includes:
the first signal receiver is connected with the signal transmitter to receive critical value information transmitted by the signal transmitter;
the dredging device controller controls the starting and stopping of the dredging device according to the critical value information received by the first signal receiver;
the terminal system includes:
the second signal receiver is connected with the signal transmitter to receive the critical value information transmitted by the signal transmitter;
the alarm is used for giving an alarm when the pressure of the dam body reaches a preset maximum value;
the central processing unit is used for storing and analyzing the critical value information received by the second signal receiver;
the manual operation table is connected with the central processing unit and can display and call the critical value information of the central processing unit; the manual operation platform is also connected with the dredging device controller and is used for manually controlling the starting and stopping of the dredging device controller;
wherein the number of pressure sensors is at least three, wherein at least three of the pressure sensors are capable of detecting different threshold values.
2. The water conservancy dredging system according to claim 1, wherein:
each pressure sensor is used for detecting different critical values of different critical positions of the dam body.
3. The water conservancy dredging system according to claim 1, wherein:
the manual operation platform can control the dredging device controller to control the dredging device.
4. The water conservancy dredging system according to claim 1, wherein:
the terminal system can also be in telecommunication connection with another self-service terminal, and the self-service terminal is used for remotely controlling the water conservancy desilting system.
5. The water conservancy dredging system according to claim 1, wherein:
the dredging device comprises:
the sludge suction pump is used for cleaning the sludge;
the hydraulic system is used for adjusting the position of the silt suction pump;
an aggregate collection system for centralized treatment of the sludge.
6. The water conservancy dredging system according to claim 5, wherein:
inhale the silt pump and form and inhale the silt end, inhale the silt end and include:
a turning blade for turning the sludge;
a sludge suction port for sucking the sludge;
the power output mechanism is provided with an output shaft and is used for driving the turning blade;
and the protective net is used for preventing large obstacles from entering the sludge suction port.
7. The water conservancy dredging system according to claim 6, wherein:
the flipping blade includes:
a main body part: is formed around the output shaft;
the cutter teeth are connected to the main body part and deviate from the plane of the main body part.
8. The water conservancy dredging system according to claim 7, wherein:
the cutter teeth are formed around the main body, and the angle of the cutter teeth deviating from the plane of the main body is greater than or equal to 90 degrees and smaller than or equal to 120 degrees.
9. The water conservancy dredging system according to claim 1, wherein:
the water conservancy desilting system also comprises a standby desilting device.
10. A method of regulating a water conservancy dredging system according to claim 9, characterized in that it comprises at least the steps of:
step one, starting the water conservancy dredging system;
secondly, detecting whether the surface of the dam body reaches a first critical value of a first critical position by the pressure sensor; if yes, carrying out the third step, otherwise, continuing to carry out the second step;
thirdly, detecting whether the surface of the dam body reaches a second critical value of a second critical position by the pressure sensor; if yes, the fourth step is carried out, otherwise, the third step is continued;
fourthly, detecting whether the surface of the dam body reaches a third critical value of a third critical position by the pressure sensor; if yes, carrying out the sixth step, otherwise, carrying out the fifth step;
fifthly, the dredging device controller controls the starting of the dredging device to start dredging; stopping the dredging device until the surface of the dam body detected by the pressure sensor reaches the first critical value of the first critical position again;
and sixthly, the dredging device controller controls the dredging device and the standby dredging device to be started simultaneously until the pressure sensor detects that the surface of the dam body reaches the first critical value of the first critical position again, and the dredging device (12) is stopped.
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| CN109162308A (en) * | 2018-10-16 | 2019-01-08 | 中国矿业大学(北京) | A kind of Novel full-automatic intelligent sump dredging device |
| CN110508062A (en) * | 2019-09-02 | 2019-11-29 | 江西永发科技有限公司 | Integrated livestock and poultry excrement, urine, biogas slurry treatment system |
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| CN204883291U (en) * | 2015-08-20 | 2015-12-16 | 杭州冷倍冠科技有限公司 | Dam control system |
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| JP2004238905A (en) * | 2003-02-05 | 2004-08-26 | Fukumaru Kensetsu Kk | Mud suction apparatus |
| CN202248001U (en) * | 2011-07-22 | 2012-05-30 | 浙江省疏浚工程股份有限公司 | Control device for desilting and excavation device |
| CN204432961U (en) * | 2014-12-01 | 2015-07-01 | 浙江海洋学院 | A kind of suction silt device of Multi-functional transporting ship |
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Effective date of registration: 20211217 Address after: 276000 Longhu Software Park, 279 shuangyueyuan Road, high tech Industrial Development Zone, Linyi City, Shandong Province Patentee after: Linyi Longhu Park Operation Management Co.,Ltd. Address before: 450003 No.18, building 12, No.2-4 courtyard, Fengqing Road, Jinshui District, Zhengzhou City, Henan Province Patentee before: Li Hongxing Patentee before: Wang Biange Patentee before: Zhang Rui Patentee before: Liu Aihua Patentee before: Liu Qing Patentee before: Huang Wei Patentee before: Wang Liang Patentee before: Meng Hao Patentee before: Hou Jun Patentee before: Liu Jie |