CN109893801A - Cooling water recovery device and method - Google Patents
Cooling water recovery device and method Download PDFInfo
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- CN109893801A CN109893801A CN201711298512.0A CN201711298512A CN109893801A CN 109893801 A CN109893801 A CN 109893801A CN 201711298512 A CN201711298512 A CN 201711298512A CN 109893801 A CN109893801 A CN 109893801A
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- water pump
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Abstract
It includes: catch basin that the embodiment of the present invention, which provides a kind of cooling water recovery device and method, the device, and the lower section of cooled equipment is arranged in, and is sprayed at the cooling water being cooled in equipment for recycle；Water pump is connect, for seeing the cooling water pump in the catch basin off with the catch basin by water-supply-pipe；And reservoir, for receiving the cooling water of the water pump pumps.The device passes through issuing setting catch basin and the cooling water that catch basin recycles is pumped to reservoir progress secondary use by water pump in cooled equipment, with this, it not only avoids cooling water to impact field ground, and avoids the waste of water resource by secondary use.
Description
Technical field
The present invention relates to cooling protection researchs, more particularly to a kind of cooling water recovery device and method.
Background technique
In recent years, with the development of petrochemical industry, tank field storage tank quantity is more and more, and scale is increasing, tank field fire
Frequent Accidents.When fire occurs for a storage tank, hydro carbons fire will release strong heat radiation, and adjacent storage is by strong
Strong heat radiation effect, it may occur however that following situations: one, adjacent storage intensity declines, tank skin tearing, pot liquid leakage, in turn
Fire occurs；Two, medium volatilizees in tank, and pressure inside the tank increases, and physical explosion occurs；Three, medium volatilizees in tank, pressure inside the tank
Increase, gas is discharged from breather valve etc. in tank, is met fire source and is burnt.
Therefore, when fire occurs for storage tank, it is necessary to protect adjacent storage tank, prevent storage tank fire incident climing
Prolong.The method that adjacent tank is protected under existing fire condition is to apply water spray, that is, passes through fixed water sprinkler system and mobile water
Rifle ceaselessly sprays cooling water towards tank skin, although this method can play the role of protecting adjacent tank, due to ceaselessly spray cooling
Water causes tank field water to spread, and the cooling water mixing fire-fighting foams and oil product of sprawling are collected in fire wall, the fire-fighting to next step
Rescue causes difficulty, while also resulting in the waste of water resource.
Summary of the invention
The purpose of the embodiment of the present invention is that providing cooling water recovery device and method, which passes through in cooled equipment
The cooling water that catch basin recycles simultaneously is pumped to reservoir progress secondary use by water pump by lower section setting catch basin, with this, no
It only avoids cooling water to impact field ground, and avoids the waste of water resource by secondary use.
To achieve the goals above, the embodiment of the present invention provides a kind of cooling water recovery device, which includes:
The lower section of cooled equipment is arranged in catch basin, for recycling the cooling water being sprayed in the cooled equipment；
Water pump is connect, for seeing the cooling water pump in the catch basin off with the catch basin by water-supply-pipe；With
And
Reservoir, for receiving the cooling water of the water pump pumps.
Optionally, the catch basin opening shape is matched with the cooled equipment bottom surface.
Optionally, strainer is arranged in the junction of the catch basin and the water-supply-pipe, for filtering cooling water in catch basin
In impurity.
Optionally, the water pump is one or more water pumps being connected in parallel；
Optionally, multiple water pump includes work water pump and reserve pump.
Optionally, the device further include:
The junction of the catch basin outer wall and bottom surface is arranged in, for detecting the pressure of bottom water in catch basin in pressure gauge
Power, output detection pressure signal；
Controller sends corresponding control instruction for receiving the detection pressure signal, and according to the detection pressure signal
Adjust the water delivery speed of the water pump.
Optionally, the pressure gauge wirelessly exports the detection pressure signal；
The device further include: secondary meter, the detection pressure signal for the wireless transmission of pressure gauge described in wireless receiving is simultaneously
The detection pressure signal is transmitted to the controller.
Optionally, the device further include: frequency converter, for receiving the control instruction of the controller transmission to the water pump
Carry out corresponding variable frequency adjustment.
Optionally, the controller executes one or more of following operation:
The controller sends enabling signal, the frequency conversion in the case that in the catch basin bottom, hydraulic pressure is greater than the set value
Device starts water delivery according to any work water pump in the one or more work water pumps of enabling signal starting；
The controller sends adjustment signal, the frequency converter in the case that in the catch basin bottom, hydraulic pressure constantly increases
Variable frequency adjustment is carried out to the work water pump in operation according to the adjustment signal, increases accordingly the work water pump in operation
Frequency until catch basin bottom hydraulic pressure no longer increase；
The working water pump frequency in current work is promoted to the upper limit and catch basin bottom hydraulic pressure still constantly increases
In the case where big, the work water pump of current work is switched to power frequency operation and sends enabling signal by the controller, institute
It states frequency converter and water delivery is started according to any work water pump in the remaining multiple water pumps of enabling signal starting, and constantly increase
The frequency of this big work water pump opened is until catch basin bottom hydraulic pressure no longer increases；
Work in the case that hydraulic pressure increase does not occur in the catch basin bottom, in the controller control operation
Water pump continues water delivery with current frequency and operation quantity；
The controller sends stop signal in the case where catch basin bottom hydraulic pressure is not more than setting value, controls the change
Frequency device and the work water pump are shut down.
Optionally, the controller controls the failure Pump Failure, while root in the case where the work fault of water pump
Corresponding enabling signal, which is sent, to the frequency converter according to the quantity of failure water pump starts the reserve pump continuation with corresponding frequencies
Start water delivery.
The embodiment of the present invention also provides a kind of cooling book recovery method, this method comprises:
The pressure of bottom water in catch basin is detected, wherein the lower section of cooled equipment is arranged in the catch basin, is used for back
Receive the cooling water being sprayed in the cooled equipment；
The water delivery speed that corresponding control instruction adjusts water pump is sent according to the detection pressure signal, wherein the water pump passes through
Water-supply-pipe is connect with the catch basin, for seeing the cooling water pump in the catch basin off.Optionally, the controller is held
One or more of following operation of row:
Enabling signal is sent in the case that the pressure of bottom water is greater than the set value in catch basin, is opened according to the enabling signal
Any work water pump starts water delivery in dynamic one or more work water pumps；
In the case that hydraulic pressure constantly increases in the catch basin bottom, frequency conversion tune is carried out to the work water pump in operation
Section increases accordingly the frequency of the work water pump in operation until catch basin bottom hydraulic pressure no longer increases；
The working water pump frequency in current work is promoted to the upper limit and catch basin bottom hydraulic pressure still constantly increases
In the case where big, the work water pump of current work is switched to power frequency operation and sends enabling signal, believed according to the starting
Any work water pump starts water delivery in number remaining multiple water pumps of starting, and constantly increases the work of this unlatching
The frequency of water pump is until catch basin bottom hydraulic pressure no longer increases；
In the case that hydraulic pressure increase does not occur in the catch basin bottom, the work water pump in operation is controlled with current
Frequency and operation quantity continue water delivery；
Stop signal is sent in the case where catch basin bottom hydraulic pressure is not more than setting value, the work water pump is controlled and stops
Machine.
Optionally, the failure Pump Failure is controlled in the case where the work fault of water pump, while according to failure water pump
Quantity send corresponding enabling signal and start the reserve pump and continue to start water delivery with corresponding frequencies.
It cooled is set through the above technical solutions, the catch basin being arranged in below cooled equipment can will be used to cool down this
Standby cooling water is all collected, and is avoided in the case where no catch basin or only single catch basin, unrecovered cooling water
Or the cooling water spread out impacts field ground, and then avoids the influence that can not implement to next step fire-fighting and rescue.
Further, the recycling cooling water in catch basin is pumped in reservoir by water pump, and the recycling cooling water is carried out two
Secondary utilization avoids the waste of water resource.
The other feature and advantage of the embodiment of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to further understand for providing to the embodiment of the present invention, and constitute part of specification, under
The specific embodiment in face is used to explain the present invention embodiment together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure:
Fig. 1 is a kind of basic structure schematic diagram of cooling water recovery device provided in an embodiment of the present invention；
Fig. 2A is a kind of catch basin top view of cooling water recovery device provided in an embodiment of the present invention；
Fig. 2 B is a kind of catch basin front view of cooling water recovery device provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of cooling water recovery device provided in an embodiment of the present invention；
Fig. 4 is a kind of flow diagram of cooling water recovery method provided in an embodiment of the present invention.
Description of symbols
1 catch basin, 2 strainer
3 water pump, 4 valve
5 reservoir, 6 pressure gauge
7 secondary meter, 8 controller
9 frequency converters
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the embodiment of the present invention.It should be understood that this
Locate described specific embodiment and be merely to illustrate and explain the present invention embodiment, is not intended to restrict the invention embodiment.
The noun of locality in embodiments of the present invention, in the absence of explanation to the contrary, used such as " upper and lower, left and right ",
" inside and outside ", " remote, close " refer to the direction with reference to attached drawing, and therefore, use direction term is for illustrating not to be to limit this hair
It is bright.
Fig. 1 shows a kind of simple structure schematic diagram of cooling water recovery device provided in an embodiment of the present invention, such as Fig. 1 institute
Show, the apparatus may include catch basin 1, water pump 3, valve 4 and reservoirs 5, wherein the catch basin 1 setting is set cooled
The cooling water being sprayed in cooled equipment is recycled in standby lower section；The water pump 3 is connect by water-supply-pipe with the catch basin 1, will
Recycling cooling water in catch basin 1 is pumped to reservoir 5, which is arranged between water pump 3 and reservoir, and the valve 4 is at this
Device does not work or closes in the case where overhauling.It should wherein it is possible to manually be opened after catch basin 1 recycles the cooling water predetermined time
Water pump 3 starts to pump the recycling cooling water in catch basin to reservoir 5, until liquid level is lower than setting height in catch basin 1.May be used also
To pass through liquid level in artificial observation catch basin 1, in the case that liquid level is higher than setting height in catch basin 1, manually
It opens the water pump 3 to start to pump the recycling cooling water in catch basin to reservoir 5, until liquid level is high lower than setting in catch basin 1
Degree.
In embodiment, the opening shape of catch basin can be set according to the shape of cooled equipment bottom surface, for example,
As shown in Figure 2 A and 2B, in the case that the equipment that is cooled is storage tank, catch basin 1 can be in annular water tank, at annular water tank bottom
Portion be arranged pedestal, and on the annular water tank vertical direction with storage tank concentric.According to the distribution situation of cooled equipment, setting
Catch basin outer wall is at a distance from cooled equipment outer wall, rapid not influence storage tank for example, in the case that cooled equipment is storage tank
Become other equipment, sets 1 outer wall of catch basin and be less than 0.5m at a distance from tank wall, the height of catch basin 1 is not more than 0.3m.
Fig. 3 shows a kind of structural schematic diagram of cooling water recovery device provided in an embodiment of the present invention, as shown in Fig. 2,
The device can also include strainer 2, which can be set in the junction of catch basin 1 and the water-supply-pipe, filter out and flow through
Impurity in water-supply-pipe in cooling water；Wherein, the junction of catch basin 1 and the water-supply-pipe is located at the bottom of 1 outer wall of catch basin,
And the water-supply-pipe can be for by the stainless steel tube of acid wash passivation antirust treatment.
Water pump 3 in the device can be a water pump 3, or multiple water pumps 3 being connected in parallel, wherein more
In the case that a water pump 3 is connected in parallel, multiple water pump 3 includes work water pump and reserve pump, pumps and breaks down in working water
In the case where, reserve pump can be come into operation instead of failure water pump operation, guarantee the stability of device.
The device can also include pressure gauge 6, secondary meter 7, controller 8 and frequency converter 9, wherein the pressure gauge 6 is set
It sets in the junction of catch basin 1 outer wall and bottom surface, detects the pressure of bottom water in catch basin 1, and the pressure value that will test is logical
Wired or wireless mode is crossed to export.In the case where being transmitted by wired mode, which passes through wiring and controller 8
The pressure value that is directly connected to, and will test is converted to detection pressure signal and is transmitted to controller 8.Wirelessly transmitting
In the case where, for example, the pressure gauge 6 can be distance-transmission pressure gauge, bottom water in catch basin 1 is detected by the distance-transmission pressure gauge
Pressure, wherein include swept resistance transmitter in the distance-transmission pressure gauge, which is converted to electricity for pressure signal
Signal is simultaneously wirelessly transmitted to secondary meter 7, the detection pressure letter of the 7 wireless receiving distance-transmission pressure gauge 6 of secondary meter wireless transmission
Number (swept resistance transmitter send electric signal) and the detection pressure signal is connect by secondary meter 7 with controller 8
Data line is transmitted to controller 8.
Fig. 4 shows a kind of flow diagram of cooling water recovery method provided in an embodiment of the present invention, specifically, control
Device 8 receives and sends corresponding control instruction to frequency converter 9 after detection pressure signal, and frequency converter 9 receives the control of controller transmission
System instruction carries out corresponding variable frequency adjustment to water pump, and specific adjustment process is as follows:
Water pump quantity can accordingly be set according to field working conditions demand.
Wherein, in the case where a water pump is arranged:
Controller compares the corresponding pressure value of detection pressure signal with setting value when receiving detection pressure signal
Compared with, such as the setting value is 1Kpa, is controlled in the case that bottom hydraulic pressure is greater than 1Kpa (liquid level 10cm) in catch basin 1
Device 8 sends enabling signal to frequency converter 9, and frequency converter 9 starts water pump according to the enabling signal and starts water delivery；Controller 8 judges
To in the case where hydraulic pressure still constantly increases in catch basin 1 after water pump 3 begins pumping recycling cooling water, controller 8 is to frequency converter
Adjustment signal is sent, frequency converter 9 carries out variable frequency adjustment to water pump 3 according to adjustment signal, increases accordingly the frequency of water pump 3 until collection
1 bottom hydraulic pressure of sink no longer increases, and in the case where 1 bottom hydraulic pressure of catch basin no longer increases, and controller 8 stops to frequency converter
9 frequency control, while water pump 3 continues water delivery with current frequency；The judgement of controller 8 obtains 1 bottom of catch basin during water delivery
In the case that hydraulic pressure is not more than 1Kpa, controller 8 sends stop signal to frequency converter 9, to control frequency converter 9 and water pump 3 stops
Machine.
In the case where more water pumps in parallel are arranged:
Controller 8 sends enabling signal, frequency conversion to frequency converter 9 in the case that bottom hydraulic pressure is greater than 1Kpa in catch basin 1
Device 9 starts any work water pump 3 in more parallel water pumps 3 according to the enabling signal and starts water delivery, such as starting water pump 3-1 is opened
Beginning water delivery；Controller 9 judges begin pumping after recycling cooling water whether hydraulic pressure continues to increase in catch basin 1 in water pump 3-1:
1, in the case where 1 bottom hydraulic pressure of catch basin no longer increases, controller 8 stops the frequency control to frequency converter 9, together
When water pump 3-1 with current frequency continue water delivery；Controller 8 judges that obtaining 1 bottom hydraulic pressure of catch basin is not more than during water delivery
In the case where 1Kpa, controller 8 sends stop signal to frequency converter 9, to control frequency converter 9 and the shutdown of water pump 3；
2, in the case where 1 bottom hydraulic pressure of catch basin continues increase, controller 8 sends adjustment signal, frequency conversion to frequency converter 9
Device carries out variable frequency adjustment to water pump 3-1 according to the adjustment signal, increases accordingly the frequency of water pump 3-1 until controller judges to obtain
1 bottom hydraulic pressure of catch basin no longer increases, and water pump 3-1 continues water delivery with current frequency.
In the case where water pump 3-1 frequency upgrading to the upper limit and the still constantly increase of 1 bottom hydraulic pressure of catch basin, controller 8 will
Water pump 3-1 is switched to power frequency operation, and sends enabling signal again to frequency converter 9, and frequency converter 9 starts surplus according to the enabling signal
Any work water pump 3 starts water delivery in remaining multiple water pumps 3, such as starting water pump 3-2 starts water delivery, since water pump 3-1 has been cut
Power frequency operation is shifted to, after water pump 3-2 starting, controller 8 sends adjustment signal to frequency converter 9, and frequency converter 9 is believed according to the adjusting
Number constantly increase the frequency of water pump 3-2 until controller judges to obtain 1 bottom hydraulic pressure of catch basin and no longer increase, water pump 3-1 power frequency
Operation, water pump 3-2 continue water delivery with current frequency.It loops back and forth like this, until 1 bottom hydraulic pressure of catch basin is not more than the feelings of 1Kpa
Under condition, controller 8 sends stop signal to frequency converter 9, to control frequency converter 9 and the shutdown of water pump 3.
The optional embodiment of the embodiment of the present invention is described in detail in conjunction with attached drawing above, still, the embodiment of the present invention is simultaneously
The detail being not limited in above embodiment can be to of the invention real in the range of the technology design of the embodiment of the present invention
The technical solution for applying example carries out a variety of simple variants, these simple variants belong to the protection scope of the embodiment of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the embodiment of the present invention pair
No further explanation will be given for various combinations of possible ways.
It will be appreciated by those skilled in the art that implementing the method for the above embodiments is that can pass through
Program is completed to instruct relevant hardware, which is stored in a storage medium, including some instructions are used so that single
Piece machine, chip or processor (processor) execute all or part of the steps of each embodiment the method for the application.And it is preceding
The storage medium stated includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), magnetic or disk.
In addition, any combination can also be carried out between a variety of different embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is violated, equally should be considered as disclosure of that of the embodiment of the present invention.
Claims (12)
1. a kind of cooling water recovery device, which is characterized in that the device includes:
The lower section of cooled equipment is arranged in catch basin, for recycling the cooling water being sprayed in the cooled equipment；
Water pump is connect, for seeing the cooling water pump in the catch basin off with the catch basin by water-supply-pipe；And
Reservoir, for receiving the cooling water of the water pump pumps.
2. the apparatus according to claim 1, which is characterized in that the catch basin opening shape and the cooled equipment bottom surface
Matching.
3. the apparatus according to claim 1, which is characterized in that the junction of the catch basin and the water-supply-pipe, which is arranged, filters
Net, for filtering the impurity in catch basin in cooling water.
4. the apparatus according to claim 1, which is characterized in that the water pump is one or more water pumps being connected in parallel；
Wherein, in the case where multiple water pumps are connected in parallel, multiple water pump includes work water pump and reserve pump.
5. device according to claim 4, which is characterized in that the device further include:
The junction of the catch basin outer wall and bottom surface is arranged in pressure gauge, defeated for detecting the pressure of bottom water in catch basin
Pressure signal is detected out；
Controller for receiving the detection pressure signal, and sends corresponding control instruction according to the detection pressure signal and adjusts
The water delivery speed of the water pump.
6. device according to claim 5, which is characterized in that
The pressure gauge wirelessly exports the detection pressure signal；
The device further include: secondary meter, the detection pressure signal transmitted wirelessly for pressure gauge described in wireless receiving simultaneously should
Detection pressure signal is transmitted to the controller.
7. device according to claim 5, which is characterized in that the device further include:
Frequency converter carries out corresponding variable frequency adjustment to the water pump for receiving the control instruction that the controller is sent.
8. device according to claim 7, which is characterized in that the controller executes one of following operation or more
Person:
The controller sends enabling signal, the frequency converter root in the case that in the catch basin bottom, hydraulic pressure is greater than the set value
Start water delivery according to any work water pump in the one or more work water pumps of enabling signal starting；
The controller sends adjustment signal in the case that in the catch basin bottom, hydraulic pressure constantly increases, the frequency converter according to
The adjustment signal carries out variable frequency adjustment to the work water pump in operation, increases accordingly the frequency of the work water pump in operation
Catch basin bottom hydraulic pressure no longer increases；
The working water pump frequency in current work is promoted to the upper limit and catch basin bottom hydraulic pressure still constantly increases
In the case of, the work water pump of current work is switched to power frequency operation and sends enabling signal by the controller, the change
Frequency device starts water delivery according to any work water pump in the remaining multiple water pumps of enabling signal starting, and constantly increases this
The frequency of the work water pump of secondary unlatching is until catch basin bottom hydraulic pressure no longer increases；
Work water pump in the case that hydraulic pressure increase does not occur in the catch basin bottom, in the controller control operation
Continue water delivery with current frequency and operation quantity；
The controller sends stop signal in the case where catch basin bottom hydraulic pressure is not more than setting value, controls the frequency converter
It is shut down with the work water pump.
9. device according to claim 7, which is characterized in that the controller is in the case where the work fault of water pump
The failure Pump Failure is controlled, while corresponding enabling signal is sent to the frequency converter according to the quantity of failure water pump and starts institute
Reserve pump is stated to continue to start water delivery with corresponding frequencies.
10. a kind of cooling water recovery method, which is characterized in that this method comprises:
The pressure of bottom water in catch basin is detected, wherein the lower section of cooled equipment is arranged in the catch basin, for recycling spray
The cooling water being sprinkled upon in the cooled equipment；
The water delivery speed that corresponding control instruction adjusts water pump is sent according to the detection pressure signal, wherein the water pump passes through water delivery
Pipe is connect with the catch basin, for seeing the cooling water pump in the catch basin off.
11. according to the method described in claim 10, it is characterized in that, the corresponding control instruction adjusts the water delivery speed of water pump
Including one or more of following operation:
In the case that the pressure of bottom water is greater than the set value in catch basin, enabling signal is sent, is started according to the enabling signal
Any work water pump starts water delivery in one or more work water pumps；
In the case that hydraulic pressure constantly increases in the catch basin bottom, variable frequency adjustment is carried out to the work water pump in operation,
The frequency of the work water pump in operation is increased accordingly until catch basin bottom hydraulic pressure no longer increases；
The working water pump frequency in current work is promoted to the upper limit and catch basin bottom hydraulic pressure still constantly increases
In the case of, the work water pump of current work is switched to power frequency operation and sends enabling signal, is opened according to the enabling signal
Any work water pump starts water delivery in dynamic remaining multiple water pumps, and constantly increases the work water pump of this unlatching
Frequency until catch basin bottom hydraulic pressure no longer increase；
In the case that hydraulic pressure increase does not occur in the catch basin bottom, the work water pump in operation is controlled with current frequency
And operation quantity continues water delivery；
Stop signal is sent in the case where catch basin bottom hydraulic pressure is not more than setting value, the work water pump is controlled and shuts down.
12. according to the method for claim 11, which is characterized in that control the event in the case where work fault of water pump
Hinder Pump Failure, while corresponding enabling signal is sent according to the quantity of failure water pump and starts the reserve pump continuation with corresponding
Frequency starts water delivery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298512.0A CN109893801B (en) | 2017-12-08 | 2017-12-08 | Cooling water recovery device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298512.0A CN109893801B (en) | 2017-12-08 | 2017-12-08 | Cooling water recovery device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109893801A true CN109893801A (en) | 2019-06-18 |
| CN109893801B CN109893801B (en) | 2023-10-20 |
Family
ID=66940792
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711298512.0A Active CN109893801B (en) | 2017-12-08 | 2017-12-08 | Cooling water recovery device and method |
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| Country | Link |
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| CN207941112U (en) * | 2017-12-08 | 2018-10-09 | 中国石油化工股份有限公司 | Cooling water recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866659A (en) * | 2012-08-27 | 2013-01-09 | 蚌埠凯盛工程技术有限公司 | Automatic control system for circulating cooling water |
| CN204289633U (en) * | 2014-09-19 | 2015-04-22 | 天能电池集团有限公司 | A kind of cooling water recirculation system be internalized into for lead acid accumulator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109893801B (en) | 2023-10-20 |
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