CN220291402U - Switch board with line mouth waterlogging prevention structure - Google Patents
Switch board with line mouth waterlogging prevention structure Download PDFInfo
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- CN220291402U CN220291402U CN202321961643.3U CN202321961643U CN220291402U CN 220291402 U CN220291402 U CN 220291402U CN 202321961643 U CN202321961643 U CN 202321961643U CN 220291402 U CN220291402 U CN 220291402U
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- air bag
- wire passing
- power distribution
- prevention structure
- distribution cabinet
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- 230000002265 prevention Effects 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000010485 coping Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 210000000078 claw Anatomy 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000002775 capsule Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010013647 Drowning Diseases 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 210000004712 air sac Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Casings For Electric Apparatus (AREA)
Abstract
The utility model relates to a power distribution cabinet with a line passing port waterlogging prevention structure, which comprises a cabinet body, an air bag, an air bottle and a liquid level sensor, wherein the air bag is arranged on the cabinet body; the bottom of the cabinet body is provided with a wire passing port; the middle part of the outer ring of the air bag is provided with an outer sealing groove which is clamped with the edge of the wire passing opening, so that the outer ring of the air bag can wrap the wire passing opening in a wrapping way, and the inner ring of the air bag is provided with a wire passing channel allowing a cable to pass through; the air bottle is communicated with the air bag through an electric control air valve and an air pipe; the liquid level sensor is arranged below the cabinet body and is positioned in the area below the wire passing port; the electric control air valve and the liquid level sensor are connected with the controller. The utility model has the advantages of preventing waterlogging at the line passing port, providing reliable waterproof protection for the power distribution system, ensuring the safe operation of equipment and lines, coping with the flooding condition under extreme environment, reducing maintenance cost and risk, improving the reliability and stability of the power distribution system through the characteristics of reliable air bag plugging device, high reliability and durability, flexible control mechanism and the like.
Description
Technical Field
The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet with a waterlogging prevention structure at a wire passing port.
Background
The switch board is according to the electrical wiring requirement with switchgear, measuring instrument, protection electrical apparatus and auxiliary assembly constitute in sealed metal cabinet's power distribution equipment, and conventional switch board's top is provided with the air vent, and the below of switch board is provided with the wire mouth that supplies the cable to wear to establish, and the switch board generally all needs to have waterproof function, and traditional switch board waterproof generally adopts sealing material such as sealant, waterproof sticky tape or rubber pad to realize, and these plugging material can be pasted or install in the seam crossing and the open position of switch board to provide sealed and waterproof effect.
However, the conventional method has the problems of complicated construction, limited durability, poor reliability and the like, the plugging material may fail due to pressure, vibration or aging, when water enters the power distribution cabinet in the face of the condition of large-scale flooding, the water can permeate the power distribution cabinet, the method is limited by the technology and experience of operators, the risk of human errors is unavoidable, and the reliability cannot be ensured.
Particularly, if plugging materials are adopted for bonding and filling, the wire passing port is completely plugged, and the plugging materials may need to be detached and replaced during cable debugging, replacement, regular inspection and maintenance, so that the maintenance difficulty and cost are increased.
The underground water level control system is positioned in low-lying areas such as underground parking lots and basements, and is provided with a special drainage system, but when heavy rainfall is encountered, the power distribution cabinet is submerged due to sudden rise of the water level, so that the power distribution cabinet is enabled to enter water to trigger an open circuit protection mechanism, the drainage system is enabled to lose power and lose effectiveness, the water level is enabled to rise continuously, huge potential safety hazards are generated, and safety accidents such as electric leakage and drowning are extremely easy to occur.
If a waterlogging prevention structure aiming at water inflow of a wire passing port is arranged, the wire passing port node is in an open state at ordinary times, so that cables are conveniently deployed and maintained, the wire passing port can be reliably and effectively plugged when flooding is carried out in a large range, and water is prevented from entering a power distribution cabinet from the wire passing port to trigger a circuit breaking protection mechanism before the water level rises to a dangerous degree, so that effective operation of a drainage system is ensured, and potential safety hazards caused by continuous rising of the water level can be avoided.
Based on this, it is necessary to study a power distribution cabinet having a flood prevention structure for a line passing port.
Disclosure of Invention
In view of the above, the utility model aims to provide a power distribution cabinet with a line-passing opening waterlogging prevention structure, which can effectively solve the problems of poor waterproof reliability, poor durability and difficult subsequent maintenance of the waterproof structure at the line-passing opening of the power distribution cabinet when the power distribution cabinet faces large-area flooding.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the power distribution cabinet with the waterlogging prevention structure is characterized by comprising a cabinet body, an air bag, an air bottle and a liquid level sensor;
the bottom of the cabinet body is provided with a wire passing port;
the middle part of the outer ring of the air bag is provided with an outer sealing groove, the outer sealing groove is clamped with the edge of the wire passing opening, so that the outer ring of the air bag can wrap the wire passing opening in a wrapping mode, the inner ring of the air bag is provided with a wire passing channel allowing a cable to pass through, and when the air bag is in an expansion state, the air bag can fill the gap between the cable and the wire passing opening;
the gas cylinder is communicated with the air bag through an electric control gas valve and a gas pipe;
the liquid level sensor is arranged below the cabinet body and is positioned in the area below the wire passing port;
the electric control air valve and the liquid level sensor are connected with the controller.
Further, the wire passing ports are arranged in a plurality, and the shape of the cable is matched with the wire passing ports.
Further, the wire passing opening is circular, and the air bag is of an annular structure.
Further, the wall thickness of the bag body of the outer sealing groove is larger than the wall thickness of other parts in the air bag.
Further, a protective ring is sleeved at the bottom of the outer sealing groove.
Further, the inner wall of the wire passing channel is provided with a pressure sensing film, and the pressure sensing film is connected with the controller.
Further, the gas cylinder is installed on the outer wall of the cabinet body through the fixing seat, and the connecting point of the gas pipe and the air bag is arranged outside the cabinet body.
Furthermore, the fixed seat is fixedly provided with clamping claws matched with the gas cylinder at intervals, so that the gas cylinder is clamped in the clamping claws.
Further, a pressure gauge is arranged on the gas cylinder.
The beneficial effects of the technical scheme are as follows:
(1) The utility model has a reliable air sac plugging device; when the water level starts to rise and reaches a certain height under the conditions of flood and the like, the liquid level sensor is triggered, and a signal is sent out through the controller, the electric control air valve is opened to inflate the air bag, so that the air bag rapidly expands and fills a gap between the periphery of the cable and the wire passing opening, sealing and blocking are formed, and water is prevented from entering. The flexible control mechanism ensures accurate response and efficient operation of the waterlogging prevention device, can reliably block the line passing port under the condition of flooding, effectively prevents water from penetrating into the power distribution cabinet, ensures that the power distribution cabinet can still normally operate in a severe environment, and protects safe operation of equipment and lines.
(2) The waterlogging prevention structure for the wire passing port has higher reliability and durability; the utility model adopts the air bag for blocking, and uses the pressure and the elasticity of the air bag to form a compact soft water blocking structure, compared with the traditional waterproof method, such as sealant or adhesive tape, the air bag blocking structure is more reliable and is not easy to be influenced by vibration, aging and the like. The plugging state does not need to be kept for a long time, only reliable plugging is effectively maintained when needed, the service life of the air bag is prolonged, and the frequency and cost for maintaining plugging materials are effectively reduced.
(3) The air bag has flexibility and controllability; under normal conditions, the air bag keeps a natural shrinkage state, allows the cable to pass through, and facilitates the deployment and replacement of the cable. However, when the water level begins to rise and reaches a certain height, the liquid level sensor detects the change of the water level and sends a signal through the controller to open the gas cylinder for inflation. The inflated air bag can rapidly block the wire passing opening to prevent water from entering. This flexible control mechanism ensures accurate response and efficient operation of the anti-flooding device.
(4) The utility model is suitable for various environments, in particular to low-lying areas such as underground parking lots, basements and the like, and the areas are easily affected by flood and waterlogging. The waterlogging prevention function of the wire passing port at the bottom of the power distribution cabinet effectively protects the safe operation of the power distribution system, and avoids equipment faults and safety accidents caused by rising of water level.
In summary, the utility model provides the power distribution cabinet with the waterlogging prevention structure at the wire passing port, which has the characteristics of reliable air bag plugging device, high reliability and durability, flexible control mechanism and the like, provides reliable waterproof protection for a power distribution system, ensures safe operation of equipment and wires, can cope with the waterlogging condition in an extreme environment, reduces maintenance cost and risk, and improves the reliability and stability of the power distribution system.
Drawings
FIG. 1 is a three-dimensional schematic of the present utility model;
FIG. 2 is a schematic front view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a cross-sectional view at a line-through node;
FIG. 5 is a cross-sectional view of the balloon in an inflated condition;
fig. 6 is a cross-sectional view showing an inflated state of an airbag according to another embodiment.
Reference numerals: 1 is a cabinet body, 2 is an air bag, 3 is a gas bottle, 4 is a liquid level sensor, 5 is a cable, 6 is an electric control air valve, 7 is an air pipe, 8 is a controller, 9 is a protective ring, 10 is a pressure sensing film, 11 is a fixed seat, 12 is a claw, and 13 is a pressure gauge; 101 is a wire passing port, 201 is an outer sealing groove, 202 is a wire passing channel, and 401 is a probe.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and detailed description:
embodiment 1, this embodiment aims at providing a switch board with line mouth 101 waterlogging prevention structure, and it is mainly used in the distribution control in low-lying areas such as underground parking area, basement, and to switch board line mouth 101 department waterproof construction, when facing large tracts of land flooding, waterproof construction waterproof reliability is poor, the durability is poor and follow-up maintenance difficulty's problem.
A power distribution cabinet with a waterlogging prevention structure of a wire passing port 101 is shown in figure 1, and comprises a cabinet body 1, an air bag 2, an air bottle 3 and a liquid level sensor 4;
the cabinet body 1 of the power distribution cabinet is based on a cabinet body 1 with a ventilation hole at the top and a wire passing port 101 at the bottom, wherein two groups of wire passing ports 101 are arranged and correspond to input wires and output wires respectively, each wire passing port 101 passes through one wire 5, and if a plurality of wires 5 are needed at the same time, the wires 5 are needed to be bundled into a bundle and sleeved by a sleeve, so that water is prevented from penetrating from a gap of the wires 5; the line passing opening 101 is circular in this embodiment, and the edge of the line passing opening 101 is provided with a curled edge to prevent the air bag 2 from being cut by the sharp edge.
As shown in fig. 4, the air bag 2 is of an annular structure, the material of the air bag 2 is rubber, the air bag sheet is firstly obtained by injection molding through a thermosetting forming die, then the edges of the air bag sheet are connected together through a sewing and splicing process such as hot pressing and high-frequency welding to form an inflatable cavity and an outer sealing groove 201, and a concave cross-section shape is formed, as shown in fig. 4, in a natural shrinkage state, the middle part of the outer ring of the air bag 2 is provided with the inner concave outer sealing groove 201, the outer sealing groove 201 is clamped with the edge of a wire passing port 101, so that the outer ring of the air bag 2 can wrap the wire passing port 101 in a wrapping mode, the inner ring of the air bag 2 is provided with a wire passing channel 202 allowing a wire 5 to pass, and the wire passing channel 202 and the wire 5 in the natural shrinkage state have a gap to allow the wire 5 to pass, thereby facilitating debugging and maintenance of the wire 5.
As shown in fig. 2, the gas cylinder 3 is arranged on the outer wall of the cabinet body 1, the gas cylinder 3 is communicated with the air bag 2 through the electric control gas valve 6 and the gas pipe 7, and as two groups of wire passing ports are arranged, the air bag 2 is correspondingly provided with two groups, one end of the gas pipe 7 is communicated with the gas cylinder, and the other end of the gas pipe 7 is divided into two branches which are respectively communicated with the two air bags 2.
In order to avoid the air pipe 7 penetrating the cabinet body 1 to open holes, thereby affecting the waterproof performance of the cabinet body 1, and avoiding hidden danger brought to the power distribution cabinet by the air cylinder 3 as a dangerous source, as shown in fig. 2, the air cylinder 3 is installed on the outer wall of the cabinet body 1 through the fixing seat 11, and the connection point of the air pipe 7 and the air bag 2 is arranged outside the cabinet body 1.
In order to facilitate the fixing and the dismounting of the gas cylinder 3, as shown in fig. 2, the fixing seat 11 is fixedly provided with clamping claws 12 which are matched with the gas cylinder 3 at intervals, so that the gas cylinder 3 is clamped in the clamping claws 12, the clamping claws 12 are made of plastic materials, have certain deformability, and the gas cylinder 3 can be clamped in the clamping claws 12 in a pressing mode.
In order to conveniently learn the pressure data of the gas cylinder 3, the gas cylinder 3 is maintained and replaced in time to ensure the effectiveness of the gas pressure, as shown in fig. 3, a pressure gauge 13 is arranged on the gas cylinder 3.
The liquid level sensor 4 is arranged below the cabinet body 1, the detecting head 401 of the liquid level sensor 4 is positioned in the area below the wire passing port 101, through holes for the liquid level sensor 4 to pass through are formed in the embodiment, the upper part of the liquid level sensor 4 is distributed in the cabinet body 1, the detecting head 401 at the lower part extends out of the cabinet body 1, the through holes are completely blocked by adopting hot melt adhesive, detachable treatment is not performed, and in other embodiments, the liquid level sensor 4 can be integrally fixed outside the cabinet body 1, and a cable 5 of the liquid level sensor 4 adopts an air bag blocking structure or enters the cabinet body 1 from an air hole above to be connected with the controller 8.
When the detector head 401 is flooded, a signal is fed back to the controller 8, and the electric control air valve 6 and the liquid level sensor 4 are connected with the controller 8, when the controller 8 receives the control signal of the liquid level sensor 4, the electric control air valve 6 is controlled to open the air bottle 3 to ventilate the air bag 2 for a certain time, the ventilation time is different due to design requirements and environmental conditions, no universal standard exists, and research and development personnel are required to conduct actual test practice to obtain specific ventilation time and air pressure data meeting sealing requirements; as shown in fig. 5, after inflation, the airbag 2 is in an inflated state, and the wire passing channel 202 and the wire passing port 101 are completely blocked; when the liquid level sensor 4 detects that the liquid level returns to normal, the controller 8 controls the electric control air valve 6 to exhaust the air bag 2, so that the natural shrinkage state is returned.
In this embodiment, the controller 8 is a PLC in the invoked power distribution cabinet, and in other embodiments, the PLC may be set independently, and in this embodiment, the electric wire of the electric control air valve 6 enters the power distribution cabinet from the air vent above the power distribution cabinet and is connected with the controller 8, so as to avoid penetrating through holes in the surface of the cabinet body 1.
Example 2, which is basically the same as example 1 except that this example takes additional measures for the wire passing port 101 which is not hemmed and optimizes the control system, is further described in terms of the structure.
In this embodiment, the edge of the wire passing opening 101 on the cabinet body 1 is not curled, and has a certain hidden danger of splitting for the air bag 2 in case of benefiting edges, in order to prevent the air bag 2 from being split, as shown in fig. 6, a protection ring 9 is sleeved at the bottom 203 of the outer sealing groove 201 of the air bag 2, the protection ring 9 is a rubber sealing ring with hardness greater than that of the air bag 2, and in order to prevent running, the protection ring is adhered to the bottom 203 of the air bag 2 by rubber glue;
in order to further improve the strength of the outer seal groove 201 and ensure that the outer seal groove is effectively clamped on the wire passing port 101, as shown in fig. 6, the wall thickness of the capsule body of the outer seal groove is larger than that of other parts in the air bag 2; to achieve this effect, during injection molding of the airbag sheet, the capsule of the outer seal groove 201 is glued so that the capsule wall thickness of the outer seal groove 201 is greater than the wall thickness of the other parts.
In order to further ensure the plugging effect and form a negative feedback closed-loop control system, the inner wall of the wire passing channel 202 is provided with a pressure sensing film 10, the pressure sensing film 10 is connected with the controller 8 and always feeds back pressure data to the controller 8, when the air bag 2 is in a natural shrinkage state, the cable 5 and the wire passing channel 202 do not contact or generate low pressure values because of gaps between the cable 5 and the pressure sensing film 10, when the air bag 2 is in an expansion state, the controller 8 triggers a monitoring program to compare real-time pressure values fed back by the pressure sensing film 10, the minimum value set by the program is the pressure value fed back by the pressure sensing film 10 just meeting the waterproof plugging, and if the real-time pressure values are smaller than the minimum value, the air bag 2 is continuously inflated; the maximum value set by the program is the pressure value fed back by the pressure sensing film 10 when the air bag 2 bears the limit air pressure, and if the real-time pressure value is about to exceed the maximum value, the air inflation is stopped and the air bag 2 is exhausted. The maximum and minimum values set in the program are not specific general values and require actual test practices by the developer.
In the above embodiment, two wire passing ports 101 are provided, and in other embodiments, a larger number of wire passing ports 101 may be provided to accommodate a larger number of cables 5.
In the above embodiment, the wire passing opening 101 is circular, the air bag 2 is in a corresponding ring shape, and in other embodiments, the wire passing opening 101 may be rectangular or diamond, and the outer contour of the air bag 2 is in a corresponding shape.
In the above embodiment, the gas cylinder 3 is installed outside the power distribution cabinet, and in other embodiments, may be installed inside the power distribution cabinet, so as to facilitate the wire arrangement.
In the above embodiment, the gas cylinder 3 is fixed on the fixing base 11, and in other embodiments, the gas cylinder 3 may be placed above or inside the power distribution cabinet, or other forms of fixing base 11 such as a sleeve may be used.
Claims (9)
1. The power distribution cabinet with the waterlogging prevention structure is characterized by comprising a cabinet body, an air bag, an air bottle and a liquid level sensor;
the bottom of the cabinet body is provided with a wire passing port;
the middle part of the outer ring of the air bag is provided with an outer sealing groove, the outer sealing groove is clamped with the edge of the wire passing opening, so that the outer ring of the air bag can wrap the wire passing opening in a wrapping mode, the inner ring of the air bag is provided with a wire passing channel allowing a cable to pass through, and when the air bag is in an expansion state, the air bag can fill the gap between the cable and the wire passing opening;
the gas cylinder is communicated with the air bag through an electric control gas valve and a gas pipe;
the liquid level sensor is arranged below the cabinet body and is positioned in the area below the wire passing port;
the electric control air valve and the liquid level sensor are connected with the controller.
2. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 1, wherein: the wire passing ports are arranged in a plurality, and the shape of the cable is matched with the wire passing ports.
3. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 1, wherein: the wire passing opening is circular, and the air bag is of an annular structure.
4. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 1, wherein: the wall thickness of the bag body of the outer sealing groove is larger than that of other parts in the air bag.
5. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 1, wherein: the tank bottom of the outer seal groove is sleeved with a protective ring.
6. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 1, wherein: the inner wall of the wire passing channel is provided with a pressure sensing film which is connected with the controller.
7. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 1, wherein: the gas cylinder is installed on the outer wall of the cabinet body through the fixing seat, and the connecting point of the gas pipe and the air bag is arranged outside the cabinet body.
8. The power distribution cabinet with the line crossing waterlogging prevention structure according to claim 7, wherein: the clamping jaws matched with the gas cylinders are fixed on the fixing base at intervals, so that the gas cylinders are clamped in the clamping jaws.
9. The power distribution cabinet with a line crossing waterlogging prevention structure according to any one of claims 1-8, wherein: the gas cylinder is provided with a pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321961643.3U CN220291402U (en) | 2023-07-25 | 2023-07-25 | Switch board with line mouth waterlogging prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321961643.3U CN220291402U (en) | 2023-07-25 | 2023-07-25 | Switch board with line mouth waterlogging prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220291402U true CN220291402U (en) | 2024-01-02 |
Family
ID=89337147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321961643.3U Active CN220291402U (en) | 2023-07-25 | 2023-07-25 | Switch board with line mouth waterlogging prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220291402U (en) |
-
2023
- 2023-07-25 CN CN202321961643.3U patent/CN220291402U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 450001, Building 16, No. 201, Jinzhan Street, High tech Industrial Development Zone, Zhengzhou City, Henan Province Patentee after: Henan Guanqing Industry Co.,Ltd. Address before: 450000 k-1, 8 / F, block B, incubation Building 2, National University Science Park, Zhengzhou high tech Industrial Development Zone, Henan Province Patentee before: Henan Guanqing Industry Co.,Ltd. |