CN207972764U - Closed Hydraulic watertight controlling device for doors - Google Patents
Closed Hydraulic watertight controlling device for doors Download PDFInfo
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- CN207972764U CN207972764U CN201820382177.6U CN201820382177U CN207972764U CN 207972764 U CN207972764 U CN 207972764U CN 201820382177 U CN201820382177 U CN 201820382177U CN 207972764 U CN207972764 U CN 207972764U
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Abstract
The utility model is related to a kind of Closed Hydraulic watertight controlling device for doors, it includes main power source, emergency power supply, three phase electric machine, the first ~ the 4th contactor, the second intermediate relay and third intermediate relay.The three-phase of three phase electric machine is connected by first contactor, transformer, power relay, Switching Power Supply with PLC controller.Emergency power supply is connected with power relay.Power relay is connected by the second intermediate relay, second contactor and first contactor with power relay, and power relay is connected by third intermediate relay, first contactor and second contactor with power relay.Power relay is connected by the second intermediate relay, the 4th contactor and third contactor with power relay, and power relay is connected by third intermediate relay, third contactor and the 4th contactor with power relay.There is capacitor between emergency power supply and three phase electric machine.The utility model is small, takes up space few.Suitable on the watertight door of ship.
Description
Technical field
The utility model is related to a kind of control devices.Specifically, it is on or off the Closed Hydraulic watertight of watertight door
Controlling device for doors is particularly suitable on the watertight door of ship.
Background technology
It is both known about in shipbuilding industry, watertight door is the important component of ship.When local damage accident occurs for hull,
By closing watertight door in time, flow can be prevented to enter in cabin, to effectively avoid the generation of sinking.Wherein, watertight
The control device of door is hydraulic control device.
Currently, the hydraulic control device of watertight door is mostly open hydraulic control device, this open hydraulic control device
Lead to successively as shown in Figure 1, it includes 380 power supply AC1,220 volts of power supply AC2 and three phase electric machine M, the power supply terminal of three phase electric machine M
Three main contacts and first switch QF1 for crossing first contactor KM1 are connected with 380 volts of power supply AC1.Two-phase in main power source AC1
By first switch QF1, and passes sequentially through transformer T, power relay K1, Switching Power Supply PS1 and be connected with PLC controller.Institute
It states 220 volts of power supply AC2 by second switch QF2 and power relay K1 to be connected with the input terminal of Switching Power Supply PS1, first switch
Buckle releaser is connected on QF1, one end of buckle releaser is connected by button switch S1 with an input terminal of Switching Power Supply PS1, is threaded off
The device other end is connected with another input terminal of Switching Power Supply PS1.Wherein, it is serially connected with first between the input terminal of Switching Power Supply PS1
Energy storage pressure sensor S2, the second energy-storage pressure sensor S3 and contactor KM1, the first energy storage pressure sensor S2's
Both ends are parallel with the 4th contact KM1-4 of first contactor KM1.When work, 380 volts of power supplys and 220 volts of power supplys all close.When
When 380 volts of power supplys have electricity, the coil of power relay K1 obtains electric, and the normally opened contact of power relay K1 is closed, and is switched to main electricity
Road, this controller PLC receives open and close door actuating signal and open and close door limiting detects signal, to control open and close door action electricity
The break-make of magnet valve.When door opening action, enabling electromagnetic valve coil obtains electric, and enabling solenoid valve is connected, and energy storage pressure oil passes through enabling
Solenoid valve acts on the rodless cavity of hydraulic cylinder, to open watertight door.When shutdown acts, shutdown electromagnetic valve coil obtains electric, pass
Door solenoid valve is connected, and energy storage pressure oil acts on the rod chamber of hydraulic cylinder by shutdown solenoid valve, to close watertight door.
When energy storage pressure sensor 1（S2）When detecting electric motor starting pressure of the energy storage pressure less than system setting, S2 is closed contact
It closes, electric motor starting, gives accumulator pressurizing.When energy storage pressure is higher than the electric motor starting pressure of system setting, the contacts S2 disconnect, but
At this time by the 4th contact KM1-4 self-lockings of KM1, motor can remain operational.When energy storage pressure sensor 2（S3）It detects
When energy storage pressure stops pressure higher than the motor of system setting, the contacts S3 disconnect, and motor is stopped.When main power source dead electricity
When, the normally-closed contact of the coil losing electricity of power relay K1, power relay K1 is closed, and is switched to emergency circuit, at this time accumulation of energy
Device disclosure satisfy that the opening and closing of hydraulic pressure watertight door three times, i.e. closed-open-closing, but motor can not start at this time.Thus may be used
See, above-mentioned hydraulic control device is mainly the action that opens or closes of watertight door to be realized using accumulator, and require at 380 volts
When power loss, hydraulic pressure watertight door remains to realize the code requirement of opening and closing three times.To meet this code requirement, accumulator itself
What will be designed is larger, occupies more space.And meeting the hydraulic oil gushed when accumulator action has local storage,
Ask hydraulic oil container also sufficiently large.Therefore, this open hydraulic control device volume is big, takes up space more, can not be arranged in hydraulic pressure
On watertight door, it is difficult to meet the requirement of integrated hydraulic watertight door.
Utility model content
Problem to be solved in the utility model is to provide a kind of Closed Hydraulic watertight controlling device for doors.The utility model volume
It is small, it takes up space few, may be provided on hydraulic pressure watertight door, the requirement of integrated hydraulic watertight door can be met.
The above problem to be solved in the utility model is realized by following technical scheme：
The Closed Hydraulic watertight controlling device for doors of the utility model includes main power source AC1, emergency power supply AC2 and three phase electric machine
M.The main power source AC1 is to exchange 380 volts of power supplys and AC 220 V power supply respectively with emergency power supply AC2.Three phase electric machine M's connects
The first phase of line terminals U, the second phase V and third phase W are touched by the first main contacts KM1-1 of first contactor KM1, the second master respectively
Point KM1-2 and third main contacts KM1-3 are connected with first switch QF1, and first switch QF1 is connected with main power source AC1.Main power source
Two-phase in AC1 passes sequentially through transformer T, power relay K1, Switching Power Supply PS1 and PLC control by first switch QF1
Device processed is connected；First contact K1-1s and second contact of the emergency power supply AC2 by second switch QF2 and power relay K1
K1-2 is connected.Buckle releaser is connected on first switch QF1, one end of buckle releaser passes through the one of button switch S1 and Switching Power Supply PS1
A input terminal is connected, and the other end of buckle releaser is connected with another input terminal of Switching Power Supply PS1.
Its main feature is that further including second contactor KM2, third contactor KM3, the 4th contactor KM4, the second intermediate relay
Device KA2 and third intermediate relay KA3.The first contact K1-1 of power relay K1 passes sequentially through the third of power relay K1
The 4th normally-closed contact KM2- of contact K1-3, the first normally opened contact KA2-1 of the second intermediate relay KA2, second contactor KM2
4 and first contactor KM1 is connected with the second contact K1-2 of power relay K1, the third contact K1-3 of power relay K1 according to
It is secondary by the first normally opened contact KA3-1 of third intermediate relay KA3, the 4th normally-closed contact KM1-4 of first contactor KM1 and
Second contactor KM2 is connected with the second contact K1-2 of power relay K1.
The first contact K1-1 of power relay K1 passes sequentially through the 4th contact K1-4 of power relay K1, among second
The second normally opened contact KA2-2 of relay KA2, the 4th normally-closed contact KM4-4 and third contactor KM3 of the 4th contactor KM4
Be connected with the second contact K1-2 of power relay K1, the 4th contact K1-4 of power relay K1 pass sequentially through among third after
The second normally opened contact KA3-2 of electric appliance KA3, the 4th normally-closed contact KM3-4 and the 4th contactor KM4 of third contactor KM3 with
The second contact K1-2 of power relay K1 is connected.
There are capacitor C1, one end of capacitor C1 to pass through the 4th contactor KM4's between emergency power supply AC2 and three phase electric machine M
Third main contacts KM4-3 is connected with the first phase U of three phase electric machine M, while the first main contacts KM3- for passing through third contactor KM3
1 is connected with a phase of emergency power supply AC2.The other end of capacitor C1 is connected with the second phase V of three phase electric machine M, while passing through
The first main contacts KM4-1 of four contactor KM4 is connected with another phase of emergency power supply AC2.The third phase W difference of three phase electric machine M
Pass through the second main contacts KM3-2 of third contactor KM3 and the second main contacts KM4-2 and emergency power supply of the 4th contactor KM4
The two-phase of AC2 is connected.
Wherein, the third main contacts of third contactor KM3 is parallel on the third main contacts KM4-3 of the 4th contactor KM4
KM3-3。
The third main contacts of the upper end and first contactor KM1 of the first main contacts KM2-1 of the second contactor KM2
The upper end of KM1-3 is connected, and the lower end of KM2-1 is connected with the lower end of the first main contacts KM1-1 of first contactor KM1.Second connects
The top and bottom of the second main contacts KM2-2 of tentaculum KM2 are upper with the second main contacts KM1-2 of first contactor KM1 respectively
End is connected with lower end.First main contacts of the upper end and first contactor KM1 of the third main contacts KM2-3 of second contactor KM2
The upper end of KM1-1 is connected, and the lower end of KM2-3 is connected with the lower end of the third main contacts KM1-3 of first contactor KM1.
Further improvement of the utility model scheme is that the two poles of the earth of emergency power supply AC2 have indirectly leads to for detecting its power supply
The first disconnected intermediate relay KA1.
The further improvement project of the utility model is, the input terminal and output end of transformer T, Switching Power Supply PS1
There is fuse F on output end.
It can be seen from above scheme when work, first switch QF1 and second switch QF2 need to be closed.As main power source AC1
When having electricity, the coil of power relay K1 obtains electric, and the normally opened contact of power relay K1 is closed, and normally-closed contact disconnects, and is switched to
Main circuit.At this point, PLC controller receives switch gate actuating signal and switch gate limit detection signal, it is dynamic to control open and close door
Make relay KA2 and KA3.When door opening action, PLC controller output control door opening action relay KA2 coils obtain electric, open the door dynamic
Make the contact closure of relay KA2, first contactor KM1 coils obtain electric, first contactor KM1 main contacts closure, motor rotating forward
Operation, by hydraulic bidirectional gear pump, hydraulic oil drives hydraulic cylinder rodless cavity, to open hydraulic pressure watertight door.Shutdown acts
When, PLC controller output control shutdown actuating relay KA3 coils obtain electric, shutdown actuating relay KA3 contact closures, and second
Contactor KM2 coils obtain electric, second contactor KM2 main contacts closure, and motor reversal operation passes through hydraulic bidirectional gear pump, liquid
Pressure oil drives hydraulic cylinder rod chamber, closes hydraulic pressure watertight door.When main power source dead electricity, the coil losing electricity of power relay K1,
The normally opened contact of power relay K1 disconnects, and normally-closed contact is closed, and is switched to emergency circuit, is used emergency power supply.At this point, PLC
Controller receives switch gate actuating signal and switch gate limit detection signal, it is same control open and close door actuating relay KA2 and
KA3.When door opening action, PLC controller output control door opening action relay KA2 coils obtain it is electric, door opening action relay KA2 touch
Point be closed, third contactor KM3 coils obtain it is electric, third contactor KM3 main contacts be closed, at this time the first phase U of three phase electric machine and
Third phase W connects the phase line and zero curve of emergency power supply respectively, and the second phase V connects capacitance, and electric motor starting rotates forward operation, passes through hydraulic bidirectional
Gear pump, hydraulic oil drives hydraulic cylinder rodless cavity, to open hydraulic pressure watertight door.When shutdown acts, PLC controller output control
Shutdown actuating relay KA3 coils processed obtain electric, shutdown actuating relay KA3 contact closures, the 4th contactor KM4 coils obtain it is electric,
4th contactor KM4 main contacts is closed, and the second phase V and third phase W of motor connect the phase line and zero curve of emergency power supply respectively at this time,
First phase U of motor connects capacitance, and electric motor starting reversion operation, by hydraulic bidirectional gear pump, hydraulic oil driving hydraulic cylinder has
Rod cavity closes hydraulic pressure watertight door.
It can be seen that by the way that the devices such as capacitor are arranged between emergency power supply and three phase electric machine, so that it may utilize a motor
Open and close door to control hydraulic pressure watertight door acts, and is not required to configuration accumulator, it is only necessary to the repairing fuel tank of very little, due to eliminating
Accumulator reduces the volume of hydraulic oil container, to greatly reduce the Closed Hydraulic watertight controlling device for doors of the utility model
Volume has saved a large amount of expensive real estates on ship so that the Closed Hydraulic watertight door control dress of the utility model can be mounted on
On hydraulic pressure watertight door, the requirement of integrated hydraulic watertight door is realized.
Description of the drawings
Fig. 1 is the open type hydraulic watertight door control device schematic diagram in background technology；
Fig. 2 is the Closed Hydraulic watertight controlling device for doors schematic diagram of the utility model.
Specific implementation mode
As shown in Fig. 2, the Closed Hydraulic watertight controlling device for doors of the utility model includes main power source AC1, emergency power supply
AC2, three phase electric machine M.The main power source AC1 is to exchange 380 volts of power supplys and AC 220 V power supply respectively with emergency power supply AC2.Three
The first phase of connecting terminal U, the second phase V and the third phase W of phase motor M passes through the first main contacts of first contactor KM1 respectively
KM1-1, the second main contacts KM1-2 and third main contacts KM1-3 are connected with first switch QF1, first switch QF1 and main power source
AC1 is connected.Two-phase in main power source AC1 passes sequentially through transformer T, power relay K1, switch by first switch QF1
Power ps 1 are connected with PLC controller.The first contact that the emergency power supply AC2 passes through second switch QF2 and power relay K1
K1-1 and the second contact K1-2 is connected；Be connected with buckle releaser on first switch QF1, one end of buckle releaser by button switch S1 with open
An input terminal of powered-down source PS1 is connected, and the other end of buckle releaser is connected with another input terminal of Switching Power Supply PS1.
The utility model further include second contactor KM2, third contactor KM3, the 4th contactor KM4, among second after
Electric appliance KA2 and third intermediate relay KA3.The first contact K1-1 of power relay K1 passes sequentially through the of power relay K1
The 4th normally-closed contact of three contact K1-3, the first normally opened contact KA2-1 of the second intermediate relay KA2, second contactor KM2
KM2-4 and first contactor KM1 is connected with the second contact K1-2 of power relay K1, the third contact of power relay K1
K1-3 passes sequentially through the 4th normally-closed contact of the first normally opened contact KA3-1 of third intermediate relay KA3, first contactor KM1
KM1-4 and second contactor KM2 is connected with the second contact K1-2 of power relay K1.
The first contact K1-1 of power relay K1 passes sequentially through the 4th contact K1-4 of power relay K1, among second
The second normally opened contact KA2-2 of relay KA2, the 4th normally-closed contact KM4-4 and third contactor KM3 of the 4th contactor KM4
Be connected with the second contact K1-2 of power relay K1, the 4th contact K1-4 of power relay K1 pass sequentially through among third after
The second normally opened contact KA3-2 of electric appliance KA3, the 4th normally-closed contact KM3-4 and the 4th contactor KM4 of third contactor KM3 with
The second contact K1-2 of power relay K1 is connected.
There are capacitor C1, one end of capacitor C1 to pass through the 4th contactor KM4's between emergency power supply AC2 and three phase electric machine M
Third main contacts KM4-3 is connected with the first phase U of three phase electric machine M, while the first main contacts KM3- for passing through third contactor KM3
1 is connected with a phase of emergency power supply AC2；The other end of capacitor C1 is connected with the second phase V of three phase electric machine M, while passing through
The first main contacts KM4-1 of four contactor KM4 is connected with another phase of emergency power supply AC2；The third phase W difference of three phase electric machine M
Pass through the second main contacts KM3-2 of third contactor KM3 and the second main contacts KM4-2 and emergency power supply of the 4th contactor KM4
The two-phase of AC2 is connected.
Wherein, the third main contacts of third contactor KM3 is parallel on the third main contacts KM4-3 of the 4th contactor KM4
KM3-3。
The upper end of the first main contacts KM2-1 of second contactor KM2 and the third main contacts KM1-3 of first contactor KM1
Upper end be connected, the lower end of KM2-1 is connected with the lower end of the first main contacts KM1-1 of first contactor KM1.Second contactor
The top and bottom of the second main contacts KM2-2 of KM2 respectively with the upper end of the second main contacts KM1-2 of first contactor KM1 and
Lower end is connected.The upper end of the third main contacts KM2-3 of second contactor KM2 and the first main contacts KM1-1 of first contactor KM1
Upper end be connected, the lower end of KM2-3 is connected with the lower end of the third main contacts KM1-3 of first contactor KM1.
In addition, there is the first intermediate relay KA1 for detecting its on/off at the two poles of the earth of emergency power supply AC2 indirectly.Become
There is fuse F on the input terminal and output end of depressor T, the output end of Switching Power Supply PS1.
Claims (4)
1. Closed Hydraulic watertight controlling device for doors, including main power source AC1, emergency power supply AC2 and three phase electric machine M；The main power source
AC1 is to exchange 380 volts of power supplys and AC 220 V power supply respectively with emergency power supply AC2；The first phase of connecting terminal of three phase electric machine M
U, the second phase V and third phase W passes through the first main contacts KM1-1 of first contactor KM1, the second main contacts KM1-2 and respectively
Three main contacts KM1-3 are connected with first switch QF1, and first switch QF1 is connected with main power source AC1；Two in main power source AC1 communicate
First switch QF1 is crossed, and passes sequentially through transformer T, power relay K1, Switching Power Supply PS1 and is connected with PLC controller；It is described
Emergency power supply AC2 is connected by second switch QF2 with the first contact K1-1 of power relay K1 and the second contact K1-2；First
Buckle releaser is connected on switch QF1, one end of buckle releaser is connected by button switch S1 with an input terminal of Switching Power Supply PS1,
The other end of buckle releaser is connected with another input terminal of Switching Power Supply PS1；
Characterized by further comprising second contactor KM2, third contactor KM3, the 4th contactor KM4, the second intermediate relays
KA2 and third intermediate relay KA3；The third that the first contact K1-1 of power relay K1 passes sequentially through power relay K1 is touched
The 4th normally-closed contact KM2-4 of point K1-3, the first normally opened contact KA2-1 of the second intermediate relay KA2, second contactor KM2
Be connected with first contactor KM1 with the second contact K1-2 of power relay K1, the third contact K1-3 of power relay K1 according to
It is secondary by the first normally opened contact KA3-1 of third intermediate relay KA3, the 4th normally-closed contact KM1-4 of first contactor KM1 and
Second contactor KM2 is connected with the second contact K1-2 of power relay K1；
The first contact K1-1 of power relay K1 passes sequentially through the 4th contact K1-4 of power relay K1, the second intermediate relay
The second normally opened contact KA2-2 of device KA2, the 4th normally-closed contact KM4-4 and third contactor KM3 and work(of the 4th contactor KM4
The second contact K1-2 of rate relay K1 is connected, and the 4th contact K1-4 of power relay K1 passes sequentially through third intermediate relay
The second normally opened contact KA3-2 of KA3, the 4th normally-closed contact KM3-4 and the 4th contactor KM4 of third contactor KM3 and power
The second contact K1-2 of relay K1 is connected；
There is capacitor C1 between emergency power supply AC2 and three phase electric machine M, the third that one end of capacitor C1 passes through the 4th contactor KM4
Main contacts KM4-3 is connected with the first phase U of three phase electric machine M, at the same by the first main contacts KM3-1 of third contactor KM3 with
A phase of emergency power supply AC2 is connected；The other end of capacitor C1 is connected with the second phase V of three phase electric machine M, while being connect by the 4th
The first main contacts KM4-1 of tentaculum KM4 is connected with another phase of emergency power supply AC2；The third phase W of three phase electric machine M passes through respectively
The the second main contacts KM4-2's and emergency power supply AC2 of the second main contacts KM3-2 and the 4th contactor KM4 of third contactor KM3
Two-phase is connected；
Wherein, the third main contacts KM3- of third contactor KM3 is parallel on the third main contacts KM4-3 of the 4th contactor KM4
3。
2. Closed Hydraulic watertight controlling device for doors according to claim 1, it is characterised in that the first of second contactor KM2
The upper end of main contacts KM2-1 is connected with the upper end of the third main contacts KM1-3 of first contactor KM1, the lower end of KM2-1 and first
The lower end of the first main contacts KM1-1 of contactor KM1 is connected；The upper end of the second main contacts KM2-2 of second contactor KM2 is under
End is connected with the top and bottom of the second main contacts KM1-2 of first contactor KM1 respectively；The third master of second contactor KM2
The upper end of contact KM2-3 is connected with the upper end of the first main contacts KM1-1 of first contactor KM1, and the lower end of KM2-3 connects with first
The lower end of the third main contacts KM1-3 of tentaculum KM1 is connected.
3. Closed Hydraulic watertight controlling device for doors according to claim 1, it is characterised in that two interpolars of emergency power supply AC2
It is connected to the first intermediate relay KA1 for detecting its on/off.
4. according to Closed Hydraulic watertight controlling device for doors as claimed in any one of claims 1 to 3, it is characterised in that transformer T's
Input terminal and output end, Switching Power Supply PS1 output end on have fuse F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820382177.6U CN207972764U (en) | 2018-03-21 | 2018-03-21 | Closed Hydraulic watertight controlling device for doors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820382177.6U CN207972764U (en) | 2018-03-21 | 2018-03-21 | Closed Hydraulic watertight controlling device for doors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207972764U true CN207972764U (en) | 2018-10-16 |
Family
ID=63765753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820382177.6U Active CN207972764U (en) | 2018-03-21 | 2018-03-21 | Closed Hydraulic watertight controlling device for doors |
Country Status (1)
| Country | Link |
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| CN (1) | CN207972764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382537A (en) * | 2018-03-21 | 2018-08-10 | 无锡德林防务装备股份有限公司 | Closed Hydraulic watertight controlling device for doors |
-
2018
- 2018-03-21 CN CN201820382177.6U patent/CN207972764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382537A (en) * | 2018-03-21 | 2018-08-10 | 无锡德林防务装备股份有限公司 | Closed Hydraulic watertight controlling device for doors |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191113 Address after: 214000 No.22, dongbeitang east section, Xigang Road, dongbeitang, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Hongmeng Marine Technology Co.,Ltd. Address before: 214000 No.99, Furong Middle Fourth Road, Yunlin street, Xishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee before: WUXI DELIN DEFENSE EQUIPMENT Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214000 No.22, dongbeitang east section, Xigang Road, dongbeitang, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Qianfan ship supporting equipment Co.,Ltd. Address before: 214000 No.22, dongbeitang east section, Xigang Road, dongbeitang, Xishan District, Wuxi City, Jiangsu Province Patentee before: Wuxi Hongmeng Marine Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201109 Address after: No. 178, Xigang Road, Dongbei Tang, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Hongmeng Marine Technology Co.,Ltd. Address before: 214000 No.22, dongbeitang east section, Xigang Road, dongbeitang, Xishan District, Wuxi City, Jiangsu Province Patentee before: Wuxi Qianfan ship supporting equipment Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211209 Address after: No. 203, Furong Zhongsi Road, Xishan District, Wuxi City, Jiangsu Province Patentee after: WUXI HAIHE EQUIPMENT TECHNOLOGY Ltd. Address before: No. 178, Xigang Road, Dongbei Tang, Xishan District, Wuxi City, Jiangsu Province Patentee before: Wuxi Hongmeng Marine Technology Co.,Ltd. |