CN110566446B - Integrated pump station liquid supply system - Google Patents
Integrated pump station liquid supply system Download PDFInfo
- Publication number
- CN110566446B CN110566446B CN201910871443.0A CN201910871443A CN110566446B CN 110566446 B CN110566446 B CN 110566446B CN 201910871443 A CN201910871443 A CN 201910871443A CN 110566446 B CN110566446 B CN 110566446B
- Authority
- CN
- China
- Prior art keywords
- liquid
- emulsion
- tank
- filtering
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 185
- 238000001914 filtration Methods 0.000 claims abstract description 128
- 238000005086 pumping Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 140
- 239000000839 emulsion Substances 0.000 claims description 138
- 238000011001 backwashing Methods 0.000 claims description 42
- 239000003921 oil Substances 0.000 claims description 41
- 239000007921 spray Substances 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 238000004945 emulsification Methods 0.000 claims description 10
- 238000005213 imbibition Methods 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000004146 energy storage Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 18
- 239000012535 impurity Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/20—Filtering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
Abstract
The invention discloses a liquid supply system of an integrated pump station, which comprises a control system, a pump station, a liquid tank and a filtering system, wherein the pump station is connected with the liquid tank through a pipeline; the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system; the pump station comprises a pump and a pipeline which are used for pumping liquid in the liquid tank; the filtering system is used for filtering the liquid in the pipeline and the liquid tank. A filtering system is used for filtering a liquid supply medium of the hydraulic support to filter impurities in the liquid supply medium, so that the hydraulic support is not damaged; meanwhile, a control system is adopted to monitor the working condition of the pump station, and automatic control is realized when a fault occurs; the operation method has the advantages of no need of manual operation, simple operation process, difficult misoperation occurrence, high operation speed and capability of ensuring the safe and reliable operation of the pump station.
Description
Technical Field
The invention relates to the field of pump station liquid supply, in particular to an integrated pump station liquid supply system.
Background
The electro-hydraulic control hydraulic support is popularized and used in large mines. The simple operation method can realize the advantages of temporary frame operation, centralized control, real-time monitoring and the like, and further increase the use degree of the electro-hydraulic control hydraulic support. But the quality requirement of the electro-hydraulic control on the medium of the hydraulic support is higher. In the past production, each enterprise has little concern about the medium used by the hydraulic support. Often, the raw water of the mine is directly and singly used as a liquid supply medium of the hydraulic support. The hydraulic support is often damaged due to more impurities.
Meanwhile, the existing pump station is complicated in control mode, mostly manual operation is performed, the manual operation process is complex, misoperation is easy to occur, and adverse results are caused. When the support has a pipe explosion phenomenon, the pump stopping speed is low, and the possibility of danger is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the pump station liquid supply system which can be used for filtering impurities and has a simple and quick control process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an integrated pump station liquid supply system comprises a control system, a pump station, a liquid tank and a filtering system;
the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system;
the pump station comprises a pump and a pipeline which are used for pumping the liquid in the liquid tank;
the filtering system is used for filtering the liquid in the pipeline and the liquid tank.
Further, the pump station includes emulsification pump station and spraying pump station, emulsification pump station is used for providing the emulsion, spraying pump station is used for providing the spraying dust suppression, emulsification pump station uses the two accuse electromagnetism off-load valves that have two kinds of modes of liquid accuse and automatically controlled, two accuse electromagnetism off-load valves with control system connects.
Further, the control mode of the control system comprises:
the single-pump control is used for accurately controlling each pump in the pump stations;
and the pump-connecting control system is used for quickly controlling a plurality of pumps of the same type in the pump station.
Furthermore, the filtering system comprises a water inlet filtering station, a backwashing clear water filtering station and a backwashing high-pressure filtering station; the pump room comprises a water pump, a water tank, a spray pump, an emulsion tank, an emulsion pump and an emulsion automatic proportioning system;
the water inlet filtering station is arranged between the water pump and the water tank;
the backwashing clear water filtering station is arranged between the water tank and the spraying pump as well as between the backwashing clear water filtering station and the automatic emulsion proportioning system;
the back-washing high-pressure filtering station is arranged between the emulsion liquid tank and the emulsion pump.
Furthermore, the water tank is also connected with a first liquid return tank, the first liquid return tank is connected with the water inlet filtering station, a low-pressure liquid return filtering station is connected between the first liquid return tank and the water tank, and the low-pressure liquid return filtering station is used for filtering water flowing into the water tank from the first liquid return tank;
the emulsion tank is connected with a second liquid return tank, and the second liquid return tank is connected with the automatic emulsion proportioning system.
Further, the automatic proportioning system of emulsion includes: the device comprises an emulsion mixer, an emulsified oil tank, an oiling device and an emulsion oil barrel;
the emulsion mixer is used for being connected with the backwashing clear water filtering station; the emulsified oil barrel is connected with the oil inlet end of the oiling device, the oil outlet end of the oiling device is connected with the emulsified oil tank, and the emulsified oil tank is connected with the emulsified oil mixer; the emulsion mixer is connected with the emulsion tank.
Further, emulsion liquid case includes imbibition mouth, liquid return mouth, high-pressure liquid export, high-pressure liquid filter equipment, energy storage ware, the imbibition mouth with emulsion blender is connected for obtain the emulsion, the liquid return mouth is used for circulating with outside air, balances emulsion liquid incasement pressure, the high-pressure liquid export is used for the outflow of emulsion, high-pressure liquid filter equipment locates the high-pressure liquid export is used for filtering the emulsion, the energy storage ware with the imbibition mouth is connected.
Furthermore, a filtering and pressure reducing device is connected between the backwashing clear water filtering station and the emulsion mixer, and the filtering and pressure reducing device is a filtering and pressure reducing valve and is used for filtering clear water between the water pump and the emulsion mixer and stabilizing the water pressure of the clear water.
Further, the control system comprises a control box and a sensor;
the control box is provided with a display screen, an indicator light and buttons, and the buttons comprise a start-stop button for local start-stop control, an emergency stop button for emergency stop in case of emergency, and an allowing and forbidding switch button for local and remote control;
the sensor comprises a concentration sensor, a liquid level sensor and a pressure sensor, and the concentration sensor, the liquid level sensor and the pressure sensor are electrically connected with the control box.
Further, the concentration sensor is arranged in the liquid tank, adopts a refractive sensor and is used for detecting the concentration of liquid in the liquid tank;
the liquid level sensor adopts a diffused silicon isolated assembly, and the hydraulic sensor is arranged at the bottom of the liquid tank in a throwing-in or external connection mode and is used for detecting the liquid level in the liquid tank and preventing air suction;
the pressure sensor is a diffused silicon isolated sensitive component and is arranged at the outlet of the pump station and used for measuring the pressure at the outlet of the pump station.
Has the advantages that:
the technical scheme of the invention provides a liquid supply system of an integrated pump station, which comprises a control system, a pump station, a liquid tank and a filtering system, wherein the pump station is connected with the liquid tank; the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system; the pump station comprises a pump and a pipeline which are used for pumping liquid in the liquid tank; the filtering system is used for filtering the liquid in the pipeline and the liquid tank. A filtering system is used for filtering a liquid supply medium of the hydraulic support to filter impurities in the liquid supply medium, so that the hydraulic support is not damaged; meanwhile, a control system is adopted to monitor the working condition of the pump station, and automatic control is realized when a fault occurs; the operation method has the advantages of no need of manual operation, simple operation process, difficult misoperation occurrence, high operation speed and capability of ensuring the safe and reliable operation of the pump station.
Drawings
FIG. 1 is a schematic structural diagram of a liquid supply system of an integrated pump station according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a multi-stage filtration system of a pump room according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a backwash high-pressure filtering station provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a backwash clear water filtering station provided by the embodiment of the invention;
FIG. 5 is a schematic structural diagram of a filtering and pressure reducing part of an influent water filtering station according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a low-pressure liquid-returning filtering station according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an automatic emulsion proportioning system according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1, an embodiment of the present invention provides a liquid supply system for an integrated pump station, including a control system, a pump station, a liquid tank, and a filter system;
the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system;
the pump station comprises a pump and a pipeline which are used for pumping liquid in the liquid tank;
the filtering system is used for filtering the liquid in the pipeline and the liquid tank.
The embodiment of the invention provides a liquid supply system of an integrated pump station, which comprises a control system, a pump station, a liquid tank and a filtering system, wherein the pump station is connected with the liquid tank; the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system; the pump station comprises a pump and a pipeline which are used for pumping liquid in the liquid tank; the filtering system is used for filtering the liquid in the pipeline and the liquid tank. A filtering system is used for filtering a liquid supply medium of the hydraulic support to filter impurities in the liquid supply medium, so that the hydraulic support is not damaged; meanwhile, a control system is adopted to monitor the working condition of the pump station, and automatic control is realized when a fault occurs; the operation method has the advantages of no need of manual operation, simple operation process, difficult misoperation occurrence, high operation speed and capability of ensuring the safe and reliable operation of the pump station.
As an improved description of the above embodiment, the embodiment of the present invention further provides another pump room industrial system, which includes a control system, a pump station, a liquid tank, and a filtering system;
the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system;
wherein, the control system's control mode includes:
the single-pump control is used for accurately controlling each pump in the pump station;
the pump station is connected with a pump control system and is used for rapidly controlling a plurality of pumps of the same type in the pump station. A more efficient control pump station is used simultaneously with the control of the ganged pumps by single pump control.
As a preferred implementation manner in the embodiment of the present invention, the control system includes a control box and a sensor, and the control box is provided with a display screen, an indicator light and a button; the sensor comprises a concentration sensor and a liquid level sensor which are electrically connected with the control box. The control box collects sensor information of the pumps and peripheral equipment, and according to actual requirements of a workshop, in some embodiments, one control box is used for every two pumps; in other embodiments, one pump and one emulsion tank use one control tank.
Illustratively, the control box includes a 7 "industrial display screen that displays the associated status of the attached equipment, such as the pump, and/or the emulsion tank. In some embodiments, the control box may also display some statistical information, such as the current oil temperature, oil pressure, liquid level of the liquid tank, emulsion concentration of the pump station, the continuous start-up time of the current pump station, and the total working time of the current day and week.
Wherein, the pilot lamp on the control box can be used for showing the operating condition of pump station. For example red for stop, green for active, yellow for pause.
It should be noted that the buttons include a start-stop button for local start-stop control, an emergency stop button for emergency stop in case of emergency, and an enable and disable toggle button for local and remote control.
Wherein, concentration sensor sets up in the emulsion liquid case, and exemplarily, concentration sensor adopts the present highest, the most reliable refractive formula concentration sensor of permission of precision for detect the concentration of emulsion. The scheme of adopting the refractive concentration sensor can realize the online detection of the concentration of the emulsion and has the real-time communication function with a control system.
The technical parameters of the refractive index concentration sensor are as follows:
concentration measurement range: 0% -10%;
and (3) measuring precision: plus or minus 0.2 percent.
Meanwhile, the liquid level sensor adopts a diffused silicon isolated assembly, and the hydraulic sensor is installed at the bottom of the emulsion tank in a throwing-in or external mode and is used for detecting the liquid level in the emulsion tank and preventing air suction.
Illustratively, the liquid level sensor adopts an American-import diffusion silicon isolated sensitive component, the pressure of liquid is converted into a DC4mA-20mA current signal through a high-reliability amplifying circuit, and the current signal is output to a control system, the liquid level sensor is a stainless steel shell, and a circuit is sealed in the shell. In some embodiments, the liquid level sensor can be installed in a throw-in type, the sensor is thrown to the bottom of the emulsion tank, the pressure at the bottom of the emulsion tank is measured, the pressure signal and the liquid level height are converted, and the liquid level height in the liquid outlet tank is calculated.
In other embodiments, the liquid level sensor may be mounted externally, and fixed to the bottom of the emulsion tank by welding or the like.
The main technical parameters of the liquid level sensor are as follows:
working voltage: DC 12V;
measurement range: 0KPa to 20 KPa;
measuring the liquid level height: 0mm-2000 mm;
quality: about 0.25 kg;
the external dimension is as follows: phi 27mm 124 mm;
the installation mode is as follows: throw-in or external;
electrical interface: leading in a horn mouth;
a hydraulic interface: phi 20 mm.
Output signal
Analog circuit output type: DC4mA-20 mA;
basic error of pressure sensor output: 2.5% (F.S).
The pressure sensor is arranged at the outlet of the pump station and used for measuring the pressure at the outlet of the pump station.
Illustratively, the pressure sensor is used for measuring the outlet pressure of a pump station, the maximum measurement range can reach 60MPa, an output signal is 4-20mA, an American-import diffused silicon isolated sensitive component is adopted, the outlet pressure of the pump station is converted into a DC4-20mA current signal through a high-reliability amplifying circuit, the current signal is output to a control device, the pressure sensor is installed in a quick plug-in mode, and a DN10 quick plug-in connector is adopted, so that the pressure sensor is convenient to install and maintain.
The main technical parameters are as follows:
working voltage: DC 12V;
measurement range: 0MPa to 60 MPa;
quality: about 0.35 kg;
the external dimension is as follows: 146.5mm 30 mm;
the installation mode is as follows: fast splicing;
electrical interface: a quick copper socket;
a hydraulic interface: DN 10;
outputting a signal:
analog circuit output type: DC4mA-20 mA;
basic error of pressure sensor output: 2.5% (F.S).
The control system adopts two modes of single-pump control and continuous jumping control, and more accurately controls the work of the pump in the pump.
The pump station comprises a pump and a pipeline which are used for pumping liquid in the liquid tank.
It should be noted that the power source of the hydraulic support is provided by an emulsion pump station; the emulsion pump in the existing market generally uses a mechanical unloading valve, the pressure fluctuation is large, the impact on a pipeline and a sealing element is large, the motor current is too large at the moment of starting the pump station, the impact on a power grid is formed, and no-load starting and no-load stopping can not be realized.
Therefore, in order to solve the above problems, in the embodiment of the present invention, the pump station includes an emulsification pump station and a spray pump station, the emulsification pump station is used for providing emulsion, the spray pump station is used for providing spray to extinguish dust, the emulsification pump station uses a dual-control electromagnetic unloading valve having two modes of hydraulic control and electric control, and the dual-control electromagnetic unloading valve is connected with the control system. The double-control electromagnetic unloading valve can realize no-load starting and no-load stopping.
At present, in order to reduce the cost and improve the benefit, coal enterprises have to compress the cost of each ton of coal, and adopt a series of methods for dealing with the low-coal-content market, such as energy conservation, consumption reduction, recycling, technological innovation and the like. In the past production, each enterprise has little concern about the medium used by the hydraulic support. Often, the raw water of the mine is directly and singly used as a liquid supply medium of the hydraulic support. The water contains a large amount of impurities, microorganisms and metal ions. The substances cause blockage of a backwashing filter element of the hydraulic support, and scratches on a valve core of the operating valve and a cylinder barrel of the hydraulic cylinder. The cylinder barrel of the hydraulic cylinder is scratched to cause the plating layer of the cylinder barrel to fall off in different degrees, so that the cylinder barrel is rusted, and finally, the inside liquid of the hydraulic cylinder is scurried to cause the whole hydraulic system to be paralyzed, and the hydraulic support stops working. The general solution is to frequently replace the hydraulic parts such as the filter element, the hydraulic cylinder, the valve, the lock and the like of the back-washing filter of the hydraulic support. The problem is not solved fundamentally. Endless input causes a rise in cost per ton of coal.
Secondly, among the current pump station, filtration system is simple, and liquid cleanliness can not well be controlled. The emulsion can produce the pollution in the production process in the support of retaining, and current filtration system can't clear away and discharge, leads to the filter core easily to block up, the trouble condition such as cluster liquid, influences production efficiency, probably must shut down the change maintenance even. Therefore, the filtering system used by the liquid in the existing pump station is not enough to meet the production requirements of energy conservation, high efficiency and low maintenance cost.
In order to solve the above problems, embodiments of the present invention provide a filtering system for filtering liquid in a pipeline and a liquid supply tank.
As a preferred implementation manner of the embodiment of the invention, the filtering system comprises a water inlet filtering station, a backwashing clear water filtering station and a backwashing high-pressure filtering station; the pump station comprises a water pump, a water tank, a spray pump, an emulsion tank, an emulsion pump and an emulsion automatic proportioning system, wherein the water pump is used for pumping water from a mine to the water tank, the water tank supplies water to the spray pump and the emulsion automatic proportioning system, and the emulsion tank obtains emulsion from the emulsion automatic proportioning system and provides emulsion for the emulsion pump;
a water inlet filtering station is connected between the water pump and the water tank;
as a preferred implementation of the embodiment of the present invention, as shown in fig. 5, the incoming water filtering station includes: the water extracted from the mine is subjected to pressure reduction filtration through a first Y-strainer 51, a first electric ball valve 52, a pressure reducing valve 53, a safety valve 54, a second Y-strainer 55 and a second electric ball valve 56 in this order.
The water after pressure reduction and filtration is finally conveyed to a water tank through an aeration tank, a first-stage sand filtering tank, a second-stage SS filtering tank, a multi-medium filtering tank and a precise filtering tank.
Wherein a spare pipeline is arranged between the Y-shaped filter 51 and the pressure reducing valve 53. The used pipeline is prevented from being broken, and the normal work of the whole water inlet filtering station is ensured.
A back-flushing clear water filtering station is connected between the water tank and the spraying pump as well as between the water tank and the automatic emulsion proportioning system;
as a preferred implementation manner of the embodiment of the present invention, as shown in fig. 4, the backwash clear water filtering station includes: a water inlet 41, a backwashing filter 42, a backwashing water inlet 43, a backwashing water outlet 44, a spray water outlet 45, an emulsification water outlet 46 and a sewage outlet 47; the back washing water inlet 43 is used for back washing the water outlet end of the filter 42, the back washing water outlet 44 is arranged at the water inlet end of the back washing filter 42, and the sewage outlet 47 is arranged near the back washing water outlet 44.
During normal filtration, water in the liquid tank enters the backwashing filter 42 through the water inlet 41, and after being filtered by the backwashing filter 42, the water respectively enters the spray water outlet 45 for a spray pump or enters the emulsion water outlet 46 for an emulsion automatic proportioning system;
during back flushing, water enters the back flushing water inlet 43, flows from the water outlet end of the back flushing filter 42 to the water inlet end of the back flushing filter 42, the back flushing filter 42 is cleaned and then flows into a pipeline through the back flushing water outlet 44, and the cleaned waste is discharged through the sewage outlet 47.
The backwash clear water filter station is also called as a clear water backwash filter station, and illustratively, the backwash clear water filter station has a nominal inlet liquid flow of 50 tons/hour, and is divided into two branches after being filtered by an automatic backwash filter of 80 microns:
a spray water outlet: 40 tons/hour, emulsion outlet: 10 tons/hour.
The main performance parameters are:
power supply: three phases (660VAC/50HZ), 2 KW;
the working environment is as follows: the method is suitable for coal mines containing methane explosive gas;
backwashing the motor: mining 660V/50HZ, 550W;
a sewage discharge motor: mining direct current 24V;
and (3) backwashing at a fixed time: setting the time of 0-99 hours 59 minutes at will, and setting the time of leaving the factory to 4 hours;
backwashing time: 0-99 minutes, 59 seconds and 2 minutes after factory setting;
motor insulation grade: f grade;
explosion-proof grade; mining flame-proof ExdI;
the control mode is as follows: timing control;
designing pressure: 3.2 MPa;
total flow of the system: 50 tons/hour;
water spray system flow: 40 tons/hour;
emulsion system flow: 10 tons/hour;
the filtering precision of the automatic back-cleaning filter is as follows: 80 microns;
filtering precision of an emulsion water inlet filter: 25 microns;
the external dimension of the case is as follows: 690X 430X 20.
A back-washing high-pressure filtering station is connected between the emulsion liquid tank and the emulsion pump.
As a preferred implementation manner of the embodiment of the present invention, as shown in fig. 3, the backwashing high-pressure filtering station includes a base and a high-pressure filter, a rotary base is additionally provided on the base, an integrated valve seat device is installed on the rotary base, the bottom of the integrated valve seat device is connected to the high-pressure filter and an energy accumulator, the lower part of the high-pressure filter is connected to a blowdown valve, and a dirty liquid recovery device on the lower part of the blowdown valve is connected to a recovery filter; a transmission mechanism is arranged at the joint of one side of the rotary machine base and the upper part of the machine base;
the integrated valve seat device comprises a check valve, an alternating valve and a recoil valve which are mutually communicated through a main channel of the valve body, and two channels are arranged in the alternating valve and are respectively communicated with two groups of high-pressure filters; the integrated valve seat device is provided with a liquid inlet on the valve body on one side of the alternate valve and a liquid outlet on the other side.
It should be noted that the liquid outlet, the liquid inlet and the energy accumulator are all provided with a detection pressure gauge.
Optionally, the water tank is further connected with a first liquid return tank, the first liquid return tank is connected with the water inlet filtering station, and a low-pressure liquid return filtering station is connected between the first liquid return tank and the water tank, as shown in fig. 6, the low-pressure liquid return filtering station is used for filtering water flowing into the water tank from the first liquid return tank. The low pressure filter station both sides are the same, and one side of them includes: a sewage outlet 61, a liquid return inlet 62, a high-pressure water inlet 63, a backwashing inlet 64, a flushing inlet 65, a filter element 66, a support seat 67, a filtered water outlet 68 and a backwashing liquid distributor 69. The sewage outlet 61, the liquid return inlet 62, the high-pressure water inlet 63, the backwashing inlet 64, the flushing inlet 65 and the filtered water outlet 68 are provided with valves.
The low-pressure liquid return filtering station comprises two working states, wherein the first working state is a forward filtering state: in forward filtration, water enters the filter cartridge 66 from the return inlet 62, passes from outside the filter cartridge 66, and exits the filtered water outlet 68. During forward filtration, the valves at the liquid return inlet 62 and the filtered water outlet 68 are opened, and the other valves are closed.
The second is a back washing state, when in the back washing state, water enters from the high-pressure water inlet 63 and then enters into the washing inlet 65 and the back washing inlet 64 respectively, and the water entering from the washing inlet 65 washes the inside of the filter element 66; water entering through the backwash inlet 64 enters the backwash liquid distributor 69, which is provided with fine holes through which water is ejected to flush the outside of the filter element 66, and then water flows out through the sewage outlet 61.
Optionally, the emulsion tank is connected to a second liquid return tank, and the second liquid return tank is connected to the automatic emulsion proportioning system. The second liquid return box obtains the emulsion from the automatic emulsion proportioning system, and when the liquid level in the emulsion box is insufficient, the emulsion is automatically returned, so that the emulsion in the emulsion box is sufficient.
As a preferred implementation manner of the embodiment of the present invention, as shown in fig. 7, the automatic emulsion proportioning system includes: the device comprises an emulsion mixer, a control system, an emulsified oil tank, an oiling device and an emulsified oil barrel;
the control system is used for controlling the automatic proportioning system of the emulsion, and the emulsion mixer is used for being connected with the backwashing clear water filtering station; the emulsified oil barrel is connected with the oil inlet end of the oiling device, the oil outlet end of the oiling device is connected with an emulsified oil tank, and the emulsified oil tank is connected with an emulsified oil mixer; the emulsion mixer is connected with the emulsion tank.
Preferably, a filtering and pressure reducing device is further connected between the backwashing clear water filtering station and the emulsion mixer, and the filtering and pressure reducing device is a filtering and pressure reducing valve and is used for filtering clear water between the water pump and the emulsion mixer and stabilizing the water pressure of the clear water.
According to the embodiment of the pump station multistage filtering system, the first liquid return tank and the second liquid return tank can ensure that water in the water tank and emulsion in the emulsion tank can be supplemented at any time when the water and the emulsion are insufficient, so that the normal work of the pump station is ensured, the emulsion automatic proportioning system can automatically proportion the emulsion without manual proportioning by workers, the labor intensity of the workers is reduced, the stability of the proportioning concentration of the emulsion is improved, and the production efficiency is improved. The filtering and pressure reducing device has the filtering function, and can play a role in stabilizing water pressure aiming at the working condition with small pressure fluctuation. The whole system is subjected to multi-stage filtration, so that the normal operation of the whole pump station is ensured, the maintenance and replacement of pump station equipment are reduced, and the purposes of energy conservation, high efficiency and cost reduction are achieved.
The automatic proportioning system of emulsion is installed in the emulsion pump station, and an important reason that the automatic proportioning device of emulsion can't effectively use is that domestic pump station system does not have the filling device of easy and simple to handle, and the workman can only use hand pump to refuel in the emulsified oil tank, and intensity of labour is big. The working efficiency is low. For the convenience of drawing, a lot of workers use the hand pump to directly pour oil into the emulsion tank, and even some workers directly pour the emulsified oil into the liquid inlet tank. This phenomenon causes the automatic proportioning device of emulsion to be unused for a long time, and emulsion concentration can't be effectively controlled, and emulsion case lid is open for a long time simultaneously, and the pollutant gets into hydraulic system very easily.
In order to solve the above problems, as a preferred implementation manner of the embodiment of the present invention, the oil feeding device is a hydraulic pump, and the hydraulic pump is a full hydraulic automatic oil feeding device, and is configured to pump the emulsified oil in the emulsified oil drum into the emulsified oil tank.
Illustratively, the technical parameters of the full-hydraulic automatic oiling device are as follows:
driving pressure: 31.5 MPa;
maximum output pressure of emulsified oil: 2.5 MPa;
output flow of emulsified oil: 40L/min.
Wherein, be equipped with the filter in the filling device for filter the impurity in the emulsified oil, ensure that the emulsified oil that refuels in the emulsified oil tank does not receive the pollution.
In the above embodiment, preferably, the emulsion tank includes a liquid suction port, a liquid return port, a high-pressure liquid outlet, a high-pressure liquid filtering device, and an energy accumulator, the liquid suction port is connected to the emulsion mixer and is used for obtaining the emulsion, the liquid return port is used for communicating with the outside air and balancing the pressure in the emulsion tank, the high-pressure liquid outlet is used for the outflow of the emulsion, the high-pressure liquid filtering device is disposed at the high-pressure liquid outlet and is used for filtering the emulsion, and the energy accumulator is connected to the liquid suction port. The energy storage ware stores energy, and when detecting the emulsion liquid level of emulsion liquid incasement lower, the energy storage ware is used for the imbibition of imbibition mouth follow emulsion mixer imbibition with the energy release of storage to emulsion liquid case can automatic fluid infusion, guarantees that emulsion liquid level is normal in the emulsion liquid case.
The emulsion tank, the oiling device, and the pipeline for connection are provided with on-off valves.
In the automatic emulsion proportioning system provided by the embodiment, the filtering and pressure reducing device is connected between the water pump and the emulsion mixer, and the filtering and pressure reducing device provides clear water and stabilizes the water pressure of the clear water for the emulsion mixer; the water pump adopts a booster pump to provide water with stable pressure for the emulsion mixer. The adaptability of the proportioning device to water pressure change is improved. The oiling device adopts a hydraulic pump to pump emulsified oil into the emulsion tank; be equipped with the filter in the filling device, filter unnecessary impurity, provide clear emulsified oil. The cleaning and the stability of the inlet water and the inlet oil are realized. Emulsion liquid case can automatic monitoring liquid level and automatic fluid infusion, has solved the storage and the management problem of emulsion. The whole system can automatically mix the emulsion without manual mixing of workers, thereby reducing the labor intensity of the workers, improving the stability of the mixing concentration of the emulsion and improving the production efficiency.
According to the liquid supply system of the other integrated pump station, the pump station is controlled by a single pump and a combined pump at the same time by using more efficient control, no-load starting and no-load stopping can be realized by adopting a double-control electromagnetic unloading valve, a water inlet filtering station is arranged between a water pump and a water tank, water obtained from a mine is filtered and then sent to the water tank, impurities, microorganisms and some metal ions in the water are removed, and the cleanness of the water used in a pump room is ensured; a back-flushing clear water filtering station is connected between the water tank and the spraying pump as well as the automatic emulsion proportioning system, and is used for further filtering water used by the spraying pump and the automatic emulsion proportioning system, so that the service life of the spraying pump and the quality of emulsion proportioned by the automatic emulsion proportioning system are ensured; and a back-washing high-pressure filtering station is connected between the emulsion liquid tank and the emulsion pump and is used for obtaining high-precision emulsion used by the emulsion pump. The whole scheme can ensure the normal operation of the whole pump station, reduce the maintenance and replacement of pump room equipment and achieve the purposes of energy conservation, high efficiency and cost reduction.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (8)
1. An integrated pump station liquid supply system which characterized in that: the system comprises a control system, a pump station, a liquid tank and a filtering system;
the control system monitors and controls the working conditions of the pump station, the liquid tank and the filtering system;
the pump station comprises a pump and a pipeline which are used for pumping the liquid in the liquid tank;
the filtering system is used for filtering the liquid in the pipeline and the liquid tank;
the filtering system comprises a water inlet filtering station, a backwashing clear water filtering station and a backwashing high-pressure filtering station; the pump station comprises a water pump, a water tank, a spray pump, an emulsion tank, an emulsion pump and an emulsion automatic proportioning system;
the water inlet filtering station is arranged between the water pump and the water tank;
the backwashing clear water filtering station is arranged between the water tank and the spraying pump as well as between the backwashing clear water filtering station and the automatic emulsion proportioning system;
the back-washing high-pressure filtering station is arranged between the emulsion tank and the emulsion pump;
the water tank is also connected with a first liquid return tank, the first liquid return tank is connected with the water inlet filtering station, a low-pressure liquid return filtering station is connected between the first liquid return tank and the water tank, and the low-pressure liquid return filtering station is used for filtering water flowing into the water tank from the first liquid return tank;
the emulsion tank is connected with a second liquid return tank, and the second liquid return tank is connected with the automatic emulsion proportioning system.
2. The system of claim 1, wherein: the pump station includes emulsification pump station and spraying pump station, emulsification pump station is used for providing the emulsion, spraying pump station is used for providing the spraying dust suppression, emulsification pump station uses the two accuse electromagnetism off-load valves that have two kinds of modes of liquid accuse and automatically controlled, two accuse electromagnetism off-load valves with control system connects.
3. The system of claim 1, wherein: the control mode of the control system comprises the following steps:
the single-pump control is used for accurately controlling each pump in the pump stations;
and the pump-connecting control system is used for quickly controlling a plurality of pumps of the same type in the pump station.
4. The system of claim 1, wherein: the automatic proportioning system of emulsion includes: the device comprises an emulsion mixer, an emulsified oil tank, an oiling device and an emulsion oil barrel;
the emulsion mixer is used for being connected with the backwashing clear water filtering station; the emulsified oil barrel is connected with the oil inlet end of the oiling device, the oil outlet end of the oiling device is connected with the emulsified oil tank, and the emulsified oil tank is connected with the emulsified liquid mixer; the emulsion mixer is connected with the emulsion tank.
5. The system of claim 4, wherein: emulsion case includes imbibition mouth, liquid return mouth, high-pressure liquid export, high-pressure liquid filter equipment, energy storage ware, the imbibition mouth with emulsion blender is connected for obtain the emulsion, the liquid return mouth is used for and outside air circulation, balances emulsion incasement pressure, the high-pressure liquid export is used for the outflow of emulsion, high-pressure liquid filter equipment locates the high-pressure liquid export is used for filtering the emulsion, the energy storage ware with the imbibition mouth is connected.
6. The system of claim 4, wherein: and a filtering pressure reducing device is also connected between the backwashing clear water filtering station and the emulsion mixer, and the filtering pressure reducing device is a filtering pressure reducing valve and is used for filtering clear water between the water pump and the emulsion mixer and stabilizing the water pressure of the clear water.
7. The system of claim 1, wherein: the control system comprises a control box and a sensor;
the control box is provided with a display screen, an indicator light and buttons, and the buttons comprise a start-stop button for local start-stop control, an emergency stop button for emergency stop in case of emergency, and an allowing and forbidding switch button for local and remote control;
the sensor comprises a concentration sensor, a liquid level sensor and a pressure sensor, and the concentration sensor, the liquid level sensor and the pressure sensor are electrically connected with the control box.
8. The system of claim 7, wherein: the concentration sensor is arranged in the liquid tank, adopts a refractive sensor and is used for detecting the concentration of liquid in the liquid tank;
the liquid level sensor adopts a diffused silicon isolated assembly, is arranged at the bottom of the liquid tank in a throwing type or an external type and is used for detecting the liquid level in the liquid tank and preventing air suction;
the pressure sensor adopts a diffused silicon isolated sensitive component, and is arranged at the outlet of the pump station and used for measuring the pressure at the outlet of the pump station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910871443.0A CN110566446B (en) | 2019-09-16 | 2019-09-16 | Integrated pump station liquid supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910871443.0A CN110566446B (en) | 2019-09-16 | 2019-09-16 | Integrated pump station liquid supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110566446A CN110566446A (en) | 2019-12-13 |
| CN110566446B true CN110566446B (en) | 2021-05-25 |
Family
ID=68780026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910871443.0A Active CN110566446B (en) | 2019-09-16 | 2019-09-16 | Integrated pump station liquid supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566446B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653946A (en) * | 2021-01-29 | 2021-11-16 | 北京华海基业机械设备有限公司 | Non-backpressure liquid return system and large-flow plunger pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2898380Y (en) * | 2006-02-15 | 2007-05-09 | 中国矿业大学 | Intelligent emulsified liquid pump station |
| CN201582241U (en) * | 2010-01-14 | 2010-09-15 | 北京天地玛珂电液控制系统有限公司 | Unloading valve for electro-hydraulic double control pump |
| CN102235348A (en) * | 2010-04-22 | 2011-11-09 | 淮南矿业(集团)有限责任公司 | Centralized control system for coalmine fully-mechanized working face pump station |
| CN102887599A (en) * | 2012-10-11 | 2013-01-23 | 许世东 | System for centralized water supply purification, softening and feed liquid proportioning for underground mining area |
| CN106957074A (en) * | 2017-05-18 | 2017-07-18 | 安徽恒源煤电股份有限公司 | A kind of emulsion pump water purification system |
-
2019
- 2019-09-16 CN CN201910871443.0A patent/CN110566446B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110566446A (en) | 2019-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110541452A (en) | Pump station multistage filtration system | |
| CN110566446B (en) | Integrated pump station liquid supply system | |
| CN201711033U (en) | High-pressure automatic back flushing filter station | |
| CN110487555B (en) | Lubricating oil test system of marine low-speed diesel engine | |
| CN112079415B (en) | Mobile water purifier and control method thereof | |
| CN110455545B (en) | Fuel oil test system of marine low-speed diesel engine | |
| CN201744214U (en) | High-pressure backwash filter | |
| CN108591038B (en) | High-pressure pump intelligent control system based on PLC | |
| CN217028286U (en) | Swimming pool clean system | |
| CN102235348A (en) | Centralized control system for coalmine fully-mechanized working face pump station | |
| CN212379401U (en) | Oil pollution monitoring and purifying system | |
| CN211004729U (en) | Underground pure water conveying system for coal mine | |
| CN111085033B (en) | Parallel type lubricating oil fine filtration method based on overpressure conduction valve | |
| CN208104595U (en) | Purifying electroplating solution pressure relief system | |
| CN219376347U (en) | Y-type filter cleaning system and medium conveying system | |
| CN114904320B (en) | Automatic back flushing liquid return filtering station and control method | |
| WO2023173390A1 (en) | Intelligent control system for high-pressure and high-flow emulsion pump station | |
| CN115121115B (en) | Desulfurization catalyst feeding system | |
| CN115350595B (en) | Downhole self-cleaning reverse osmosis device and control method | |
| CN213207242U (en) | Shield constructs grease injection device of quick-witted synchronous slip casting jar stirred bearing | |
| CN217340453U (en) | Tank liquor filtering self-cleaning device | |
| CN216320364U (en) | Novel intelligent high-pressure backwashing filter station control system | |
| CN219186185U (en) | Filter cloth soaking and washing device | |
| CN208611944U (en) | A kind of high-efficiency and precision oil filter | |
| CN219231642U (en) | Synchronous automatic cleaning safety filter device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An Integrated Pump Station Liquid Supply System Effective date of registration: 20221117 Granted publication date: 20210525 Pledgee: China Construction Bank Shenyang Hunnan sub branch Pledgor: LIAONING LIANSHENG MACHINERY MANUFACTURING Co.,Ltd. Registration number: Y2022980022289 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210525 Pledgee: China Construction Bank Shenyang Hunnan sub branch Pledgor: LIAONING LIANSHENG MACHINERY MANUFACTURING Co.,Ltd. Registration number: Y2022980022289 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |