CN114101190B - Full-automatic instrument cleaning device and method - Google Patents

Full-automatic instrument cleaning device and method Download PDF

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Publication number
CN114101190B
CN114101190B CN202111361446.3A CN202111361446A CN114101190B CN 114101190 B CN114101190 B CN 114101190B CN 202111361446 A CN202111361446 A CN 202111361446A CN 114101190 B CN114101190 B CN 114101190B
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cleaning
instrument
module
density
adjusting
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CN114101190A (en
Inventor
陈贤雷
施浩磊
许惠中
郝华东
吴泽南
张三军
管洪辉
黎鸿举
黎国红
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Zhoushan Institute Of Calibration And Testing For Quality And Technology Supervision
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Zhoushan Institute Of Calibration And Testing For Quality And Technology Supervision
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature

Abstract

The invention discloses a full-automatic instrument cleaning device and a method, comprising the following steps: the medium supply mechanism is used for supplying cleaning media with different attributes and different flow rates and is connected with the instrument to be cleaned; the mode switching mechanism is used for switching cleaning media and adjusting the position of an instrument to be cleaned and is connected with the medium providing mechanism; the intensity adjusting module is connected with the medium supply mechanism and used for adjusting the cleaning frequency and the cleaning medium flow rate; the temperature control module is used for adjusting the temperature of the cleaning medium according to the cleaning mode and is connected with the medium supply mechanism; the state monitoring module is used for connecting the medium supply mechanism, the temperature control module, the strength adjusting module and the mode switching module according to the cleaning progress; the separation and purification mechanism is used for purifying the cleaned water and is connected with the medium supply mechanism; the control system is used for controlling the cleaning instrument and is connected with the state monitoring module and the separation and purification mechanism; the full-automatic cleaning of the instrument is realized.

Description

Full-automatic instrument cleaning device and method
Technical Field
The invention relates to the field of instruments and meters, in particular to a full-automatic instrument cleaning device and method.
Background
When the instrument is calibrated by using the flow standard device, instruments with different residual media are arranged on the same calibrating device, so that the calibrating medium of the calibrating device is polluted, the meter to be detected is polluted when the polluted medium is used for re-detecting the meter, toxic and harmful media can be polluted to more places along with the use of the meter to be detected, and immeasurable secondary disasters are caused. The residual medium not only pollutes the environment and shortens the service cycle of the verification medium, but also influences the precision of the verification device because of the wall hanging of the residual medium.
In the prior art, the instrument is necessary to be cleaned before the instrument is verified, an old instrument cleaning device needs to be manually operated in each step, and the discharged waste and mixed liquid seriously pollute the environment.
For example, a "liquid flowmeter automatic cleaning device" disclosed in chinese patent literature has a publication number: CN104338707A discloses a cleaning agent container and a centrifugal pump cleaning loop, but the cleaning agent container and the centrifugal pump cleaning loop cannot be used for full-automatic cleaning of various cleaning media of various instruments, and the cleaning process cannot be systematized.
Disclosure of Invention
Therefore, the full-automatic instrument cleaning device and method provided by the invention have the advantages of more instrument caliber, high automation degree, recyclable cleaning medium, less pollutant discharge and the like, and realize full-automatic instrument cleaning.
In order to achieve the above purpose, the invention provides the following technical scheme:
a fully automatic meter cleaning device comprising:
the medium supply mechanism is used for supplying cleaning media with different attributes and different flow rates and is connected with the instrument to be cleaned;
the mode switching mechanism is used for switching cleaning media and adjusting the position of the instrument to be cleaned and is connected with the medium providing mechanism;
the intensity adjusting module is connected with the medium supply mechanism and used for adjusting the cleaning frequency and the cleaning medium flow rate;
the temperature control module is used for adjusting the temperature of the cleaning medium according to the cleaning mode and is connected with the medium supply mechanism;
the state monitoring module is used for connecting the medium supply mechanism, the temperature control module, the intensity adjusting module and the mode switching module according to the cleaning progress;
the separation and purification mechanism is used for purifying the cleaned water and is connected with the medium supply mechanism;
and the control system is used for controlling the cleaning instrument and is connected with the state monitoring module and the separation and purification mechanism.
As preferred, medium feed mechanism includes the water tank, 304 stainless steel is chooseed for use to the water tank material, be equipped with the cleaning water in the water tank, the other diesel tank that is equipped with of water tank, there is diesel oil in the diesel tank, all be equipped with fixed connection's breather valve on diesel tank and the cleaning agent case, the other cleaning agent case that is equipped with of diesel tank, there is the cleaning agent in the cleaning agent case, the cleaning agent is hydrocarbon rapid-curing cutback cleaning agent, the other waste liquid transfer case that is equipped with of cleaning agent case, the water tank, the diesel tank, all be equipped with drain and business turn over pipeline interface on cleaning agent case and the waste liquid transfer case respectively, all be equipped with the blowoff valve on the drain, still be equipped with air inlet and gas vent on the waste liquid transfer case, all be equipped with the air valve on air inlet and the gas vent, the water tank, the diesel tank, all be equipped with the chemical industry pump on the cleaning agent case, the other installing support that is equipped with fixed connection's shock attenuation sloping on the chemical pump, the exit of chemical pump connecting tube is provided with the damping larynx. The sealing effect of the medium supply mechanism can be ensured and quick pollution discharge can be realized.
Preferably, the mode switching mechanism includes: the hydraulic expansion piece is connected with the medium supply mechanism, a switch valve is connected beside the hydraulic expansion piece and is a pneumatic ball valve, a sweeping line air inlet unit is connected beside the switch valve, and an electromagnetic valve is arranged on the sweeping line air inlet unit. The whole cleaning device is ensured not to be rusted, and the cleaning effect is not influenced.
Preferably, the intensity adjustment module includes: the frequency converter is connected with the mode switching mechanism, a filter is arranged on the frequency converter, a flow speed adjusting valve is arranged beside the frequency converter in a connected mode, the flow speed adjusting valve is an electric adjusting valve, an ultrasonic generator is arranged beside the flow speed adjusting valve in a connected mode, ultrasonic generators with different frequencies are arranged on pipelines with different cleaning requirements, and a pair of ultrasonic generators is arranged at the front end and the rear end of the instrument to be cleaned respectively. The speed regulation control can be realized economically and safely.
Preferably, the temperature control module comprises a heating tube. The heating power can be adjusted along with the water temperature of the water tank.
Preferably, the state monitoring module comprises a density meter, a liquid level transmitter, a pressure transmitter and a temperature transmitter. Cleaning information can be monitored in real time.
Preferably, the control system includes an I/O module, an A/D module, a pulse shaping module, and a power module.
The acquisition of field analog signals can be completed; sending an analog quantity signal to the field equipment to control the action of the regulating valve and the frequency converter; and sending a switching value signal to the site to control the action of the valve.
Preferably, the separation and purification mechanism comprises a centrifugal machine and a reverse osmosis water purifier connected with the centrifugal machine, wherein the reverse osmosis water purifier is provided with a multi-media filter, an activated carbon adsorption filter, a softening unit and a fine filter.
The cleaned water can be purified to a clean water level.
A full-automatic instrument cleaning method comprises the following steps:
s1, signal acquisition;
s2, adjusting a mode;
and S3, feeding back a plan.
The embodiment of the invention has the following advantages:
(1) The cleaning instrument has more calibers and high automation degree; (2) The cleaning medium can be recycled, and the discharged pollutants are less; (2) the full-automatic cleaning of the instrument is really realized; and (3) the environment is protected, and the waste of resources is reduced.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the invention, and do not limit the limit conditions of the invention, so that the invention has no technical essence, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the technical contents disclosed in the invention without affecting the efficacy and the achievable purpose of the invention.
FIG. 1 is a schematic diagram of the control system of the present invention.
FIG. 2 is a schematic diagram of the apparatus of the present invention.
In the figure:
1-a water tank; 2-diesel tank; 3-a cleaning agent box; 4-a waste liquid transfer box; 5-a centrifuge; 6-reverse osmosis water purifier; 7-a frequency converter; 8-a flow meter; 9-ultrasonic generator.
Detailed Description
While embodiments of the present invention will be described with reference to particular embodiments, those skilled in the art will readily appreciate that the present invention has additional advantages and benefits that may be realized from the teachings herein, and that the embodiments described are only a few, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-2, in a preferred embodiment, the present invention discloses a fully automatic instrument cleaning device and method, comprising:
the full-automatic instrument cleaning device comprises a cleaning medium supply system, a cleaning mode switching system, a cleaning intensity adjusting system, a heating and temperature control system, a cleaning process monitoring system, a computer control system, a cleaning medium circulating separation and purification system and the like. The cleaning medium supply system comprises a water tank, a diesel tank, a cleaning agent tank, a waste liquid transfer tank, a chemical pump and other equipment; the cleaning mode switching system comprises a process cleaning pipeline, a hydraulic expansion piece, a switch valve, a line sweeping air inlet unit and other equipment; the cleaning intensity adjusting system consists of a variable frequency control unit, an ultrasonic generator and an adjusting valve; the temperature control system consists of a heater and a temperature controller; the cleaning process monitoring system is composed of a temperature transmitter, a pressure transmitter, a density transmitter, a liquid level transmitter, a current meter and the like. The computer control system consists of an industrial control computer, a signal input unit, a signal output unit and other equipment; the cleaning medium circulating separation and purification system consists of a liquid centrifugal separator, a water purification system and the like.
The system functions are as follows:
the system adopts advanced computer control technology, frequency conversion control technology, ultrasonic cleaning technology, sensor technology, medium environmental protection processing technology and the like, the whole cleaning process is completely controlled by a computer, the switching of cleaning media, the adjustment of ultrasonic cleaning intensity, the starting and stopping of a circulating pump, the adjustment of flow rate, the adjustment of cleaning medium temperature and the judgment of instrument cleanliness are automatically completed, the generated waste liquid is separated and reused while an instrument is cleaned, and full automation and no pollution are really realized. After the instrument is cleaned, the computer system can automatically generate a cleaning record, and the cleaning record is stored in a database for later query.
Cleaning the instrument:
the device provides three kinds of washing modes, is heavy oil instrument washing mode, light oil and chemical products instrument washing mode, water instrument washing mode respectively. In the computer control system, cleaning mode selection is provided, and after the cleaned instrument is installed in place, an operator can select a corresponding cleaning mode according to different instruments.
The separation and purification functions of the cleaning medium are as follows:
the device has the functions of separating, purifying and recycling the waste liquid, the mixed waste liquid is separated by the liquid centrifugal separator, the diesel oil returns to the diesel oil tank after separation, the water is sent into the purifier and is conveyed to the water tank after being purified into clean water, and the solid residue generated in the separation process is discharged.
Cleaning medium liquid level early warning function:
all install level sensor in water tank, cleaner case, the diesel oil case, when the cleaning medium liquid level is less than the setting value, level sensor can report to the police, and the suggestion cleaning medium is not enough, needs to add cleaning medium.
The cleaning medium heating function:
the heating device is designed in the water tank, water can be heated to 50 ℃ at most, the device consists of a heating pipe and a temperature controller, and when a heavy oil or light oil instrument is cleaned, the heating device can be automatically opened by the system to heat the water to 50 ℃, so that oil stains can be better removed.
Ultrasonic cleaning function:
this device design has ultrasonic wave generating device, before using cleaning medium's washing instrument, washs the instrument with the ultrasonic wave earlier, utilizes ultrasonic physical characteristic to wash the instrument, and the use amount of cleaning medium that has significantly reduced has practiced thrift the resource, has strengthened the cleaning performance.
Cleaning medium supply system:
the chemical pump can satisfy the circulation requirement of three kinds of media according to the demand that the device washd the bore, and chemical pump installation requirement accords with the rotating equipment installation requirement, and chemical pump installation design has independent installing support, installs the shock attenuation sloping iron additional, and chemical pump connecting tube's exit sets up the damping larynx. And (4) reasonably selecting the type according to calculation, and fully considering the optimal working interval of the chemical pump. The chemical pump that chooses for use is frequency conversion chemical pump, satisfies the operation requirement of the maximum flow of device. The pump configuration is as follows:
Figure BDA0003359441280000061
the maximum total power of the water pump electricity is 4K.
According to the design requirement of the full-automatic cleaning environment-friendly device, the volume of the water tank is designed to be 2m 3 The material is 304 stainless steel, the integral welding process is adopted for manufacturing, a drain outlet is designed, a drain valve is installed, and an inlet and outlet pipeline interface is arranged on the water tank. The water tank is filled with clean water, the density is 0.95-1g/ml, and the clean water is one of media for cleaning the instrument. During the cleaning process, the water may be heatedUp to 50 ℃.
According to the design requirement of full-automatic cleaning ring arrangement, the volume of the diesel tank is designed to be 1m 3 The material is 304 stainless steel, the integrated welding process is adopted for manufacturing, a drain outlet is designed, a drain valve is installed, the diesel tank is in a sealing design, a breather valve is installed on the diesel tank, and an inlet and outlet pipeline connector is arranged on the diesel tank, so that the safety requirement is completely met. The diesel oil tank is filled with diesel oil, the density of the diesel oil is 0.83-0.85g/ml, the diesel oil tank is one of media for cleaning instruments, and the diesel oil tank is mainly used for cleaning the instruments of which the media are heavy oil.
According to the design requirement of the full-automatic cleaning environment-friendly device, the volume of the cleaning agent box is designed to be 1m 3 The cleaning agent box is made of 304 stainless steel, is manufactured by adopting an integrated welding process, is provided with a sewage draining outlet and a sewage draining valve, is in a sealing design, is provided with a breather valve and is provided with an inlet and outlet pipeline connector. The cleaning agent box is filled with a cleaning agent, a hydrocarbon quick-drying cleaning agent is selected, the density is 0.7-0.80g/ml, the instrument using light oil or chemical products as a medium is cleaned, and diesel oil remained on the instrument is cleaned at the same time.
According to the design requirement of the full-automatic cleaning environment-friendly device, the volume of the waste liquid transfer box is designed to be 2m 3 The material is 304 stainless steel, the integrated welding process is adopted for manufacturing, a drain outlet is designed, a drain valve is installed, an inlet and outlet pipeline interface is matched on the waste liquid transfer box, and cleaning medium mixed liquid generated in the cleaning process is stored in the transfer box.
The waste liquid transfer box has the functions of containing waste liquid and volatilizing, and the used cleaning agent is volatilized into gas in the box and is discharged into the atmosphere. The waste liquid transfer box is designed with an air inlet and an air outlet, and valves are respectively arranged on the air inlet and the air outlet, so that when the waste liquid transfer box is used, low-pressure compressed air is injected into the waste liquid transfer box, the air circulation in the waste liquid transfer box is increased, and the volatilization of a cleaning agent is accelerated.
Cleaning mode switching system:
cleaning a pipeline:
1) The cleaning pipeline is made of 304 stainless steel and is made of a national standard (GB) fluid steel pipe, and the surface of the cleaning pipeline is polished. The flange is made of 304 stainless steel according to national standards; the welding position of the test pipe section is flat, smooth, beautiful and free from leakage.
2) An air inlet valve is additionally arranged near the meter clamping device of each pipeline, and an air inlet scavenging line is arranged as required. Each cleaning pipeline is additionally provided with a flow direction mark.
3) A water outlet is designed below the cleaned instrument pipeline, and water remained in the pipeline is discharged and connected to the water tank after cleaning is finished.
The hydraulic expansion piece adopts a hydraulic control mode to clamp the cleaned instrument and is provided with a hydraulic station, and the clamping force is adjustable; the liquid receiving part of the hydraulic expansion piece is made of 304 stainless steel. The telescopic length of the hydraulic telescopic device is as follows: the diameter is more than or equal to 200mm, and the cleaning device is combined with the cleaning of the short section, so that the requirement on the installation size of a cleaned instrument can be met; the device is provided with 3 hydraulic retractors with the specification: DN50, DN200, DN400.
Pneumatic ball valve is selected for use to the switch valve, and the case is 304 stainless steel to guarantee that whole pipeline corrosion can not appear, influence the cleaning performance. The different cleaning media are switched by controlling the on-off of the switch valve.
The line sweeping air inlet unit is provided with a compressed air inlet on the cleaning pipeline, and an electromagnetic valve is arranged at the upper end of the air inlet to control the on-off of a high-pressure air source so as to clean the residual water in the pipeline. The electromagnetic valve is controlled by DV24V and is in a normally closed type.
Cleaning the intensity adjusting system:
a frequency converter is used for converting the frequency of the input signal,
the whole set of device is provided with 1 4KW frequency converter, and can realize the control of starting, stopping, speed regulation and the like of the chemical pump. The frequency converter is internally provided with a filter, so that the interference of the frequency converter to the outside ground is eliminated, and the frequency of the frequency converter is adjusted by a computer to complete the control of the chemical pump. The control mode can meet the requirement of flow rate regulation, reduce the running cost of the device and improve the safety of the whole device.
An ultrasonic cleaning device:
the ultrasonic cleaning device is matched, the cleaning capability of the device is enhanced in a physical mode, and the ultrasonic generator can adjust the intensity of ultrasonic waves according to different cleanliness of the instrument. A total of 3 sets of ultrasonic wave generating devices are provided, and each cleaning pipeline is provided with an ultrasonic wave generator. The ultrasonic generating device is installed in an insertion mode, and a pair of ultrasonic generating probes are respectively installed at the front end and the rear end of the cleaned instrument.
Flow rate regulating valve:
the pipeline is additionally provided with an adjusting valve, the flow speed of cleaning liquid in the pipeline is adjusted according to the cleanliness of the instrument through automatic control of a computer, so that the cleaning intensity is adjusted, and the adjusting valve is electrically controlled. The regulating valve is an electric regulating valve, the power supply AC220V, the control signal is 4-20mA, the range of the opening degree can be realized to be 0-100%, and the explosion-proof grade is Exd IICT5-CT6.
Heating and temperature control system:
the heating system is provided with an electric heating system and a water temperature adjusting system. The temperature controller can adjust the heating power along with the water temperature of the water storage tank, so that the temperature control effect meets the requirements of related technical indexes. The power of the electric heating system is more than or equal to 30kw, and the power supply voltage is 380V. A seamless stainless steel (or copper) heating tube with over-hard quality should be selected. The heating pipe is designed to be convenient to replace. The heat-insulating layer is arranged outside the water tank, so that energy loss caused by heat dissipation is reduced under the condition that normal use of the device is not influenced.
Cleaning process monitoring system
The cleaning process monitoring system is composed of various high-performance sensors, information of the device in the cleaning process can be transmitted to the upper computer in real time, and the upper computer judges the cleaning progress by utilizing the data, so that corresponding actions are made.
The pressure transmitter: the measurement accuracy grade is 0.2%, the measurement range is (0-1.0) MPa, the output signal is (4-20) mA, and the power supply DC is 24V.
A temperature transmitter: the measuring accuracy grade is 0.2 grade (PT 100), the measuring range is (0-50) DEG C, the output signal is (4-20) mA, and the power supply DC is 24V.
A flow velocity meter: the precision is 0.5 level, the output signal is a pulse signal, and the power supply voltage is AC220V.
An online densimeter: the measuring range is 0-2g/ml, the precision is 0.001g/ml, the output signal is 4-20mA, and the power supply voltage DC24V.
A liquid level transmitter: the measuring range is 0-1000mm, the precision is 0.5mm, the output signal is 4-20mA, and the power supply voltage DC24V.
Cleaning medium circulation separation clean system:
the main equipment is a liquid centrifugal separator, cleaning mixed liquid in a waste liquid transfer tank is sent into the liquid centrifugal separator, the mixed liquid enters a rotary drum under the action of a vortex disc, the mixed liquid and the rotary drum rotate synchronously in a bulkhead area formed by a yoke plate, and heavy phase liquid with high specific gravity gradually leaves the center of the rotary drum and leans against the wall of the rotary drum in the upward flowing process under the action of centrifugal force; the light phase liquid with smaller specific gravity gradually gets away from the wall of the rotary drum and leans to the center, the clarified two-phase liquid finally respectively enters the collection chamber through respective weir plates and is respectively led out of the machine through the leading pipe, the diesel oil is sent back to the diesel oil tank, the separated water is conveyed into the water purification equipment, the solid residue generated in the separation process is discharged from the solid waste port, and the whole process is a physical process without adding any chemical reagent. The device adopts a liquid centrifugal separator.
Small-sized reverse osmosis water purifying equipment
The device is furnished with water purification unit, can purify the aqueous cleaning degree after will wasing, and water purification unit purifies the procedure as follows specifically:
(1) coagulation and precipitation treatment: by adding high molecular substances (flocculating agents) into source water, fine and loose floccules in a water body become thick and dense, and rapid precipitation is facilitated.
(2) A multi-media filter: the filter is filled with refined filter materials with different sizes and types, which are arranged from top to bottom and from small to large in sequence, and can remove suspended matters, silt, clay, humus and the like in the water body, so that the effluent turbidity achieves an ideal effect.
(3) An activated carbon adsorption filter: the active carbon adsorption filtration is one of the main devices for water quality pretreatment, and can carry out chemical adsorption on substances with various properties and remove peculiar smell, organic matters, colloid, residual chlorine and the like in a water body.
(4) Softening the machine set: the total amount of calcium and magnesium ions in water is called as the hardness of water, insoluble precipitates (water scale) are easily generated in the process of daily life and industrial water use, a lot of inconvenience is brought to life and production, and a softening unit can effectively remove the calcium and magnesium ions in the water, so that the hardness of the effluent water is less than or equal to 0.02mmol/L.
(5) Fine filtering: the filter body is made of stainless steel, the filter element is made of PP (polypropylene) through spray melting, the hole shape is of a conical structure, the filter has the characteristics of large dirt holding capacity, long service life, easiness in replacement and the like, and the filtering precision is different from 0.1-50 mu m.
Computer automatic control system:
the control system comprises the following hardware: the control system consists of an upper computer and a lower computer. The upper computer adopts a touch screen all-in-one machine; the lower computer is composed of a programmable controller and an isolation module independently developed by our company.
1) Computer with a memory card
2) PLC fastener, switching power supply, relay, terminal row isoelectrical components integrate inside the sled dress device.
3) The system is provided with an I/O module, an A/D module, a D/A module, a pulse shaping module and a power supply module. The acquisition of field analog signals can be completed; sending an analog quantity signal to the field equipment to control the action of the regulating valve and the frequency converter; sending a switching value signal to the site to control the action of the valve; shaping pulse signals transmitted by the instrument; and a stable DC24V, DC V power supply is provided for the field instrument.
The control system is controlled by an industrial computer, and can complete the functions of real-time control, data acquisition, remote operation and the like of equipment such as a field pump, a frequency converter, a valve and the like, and realize the automation of control and data processing. The system cleaning control and the power control are completely independent, and the system has higher safety. An emergency stop key is arranged on a cleaning interface, so that the emergency stop key can timely respond to abnormal conditions, and the safety of equipment and personnel is guaranteed.
The functions of the control system are as follows:
the system can realize the automatic cleaning of the instrument, automatically select cleaning media according to the cleanliness of the instrument, control the cleaning time of each cleaning medium, control the opening and closing of a valve, adjust the flow rate of the cleaning media, open and close an ultrasonic cleaning device and discharge liquid in a pipeline.
The system can realize that the computer automatically collects relevant data, can collect signals such as temperature, pressure, liquid level, density, valve opening degree and the like in the operation of the device, and displays the signals on an operation interface of the computer in real time, and the signals can be used as the basis for judging the cleaning process by the computer.
The system can collect the temperature in the water tank and control the heating system to heat the water to a set value.
The system can collect the temperature in the diesel tank, detect the temperature change in the diesel tank, and when the temperature in the diesel tank rises, can automatic shutdown equipment operation, guarantee the operation safety of device.
The temperature in the cleaning agent case can be gathered to the system, prevents that the too high emergence of cleaning agent temperature is dangerous. The system can automatically shut down the device to send out an over-temperature alarm.
The temperature in the waste liquid case can be gathered to the system, prevents that waste liquid case high temperature from taking place danger. When the temperature exceeds the set temperature, the system can automatically shut down the device to send out an over-temperature alarm.
The system can collect the density in the water tank, and when the density of the water in the water tank is higher than a set value, the system can prompt separation and purification.
The system can collect the density in the diesel tank, and when the density of the diesel is higher or lower than a set value, the system can prompt separation and purification.
The system can collect the density in the cleaning agent box, and when the density of the cleaning agent is higher or lower than a set value, the system can prompt separation and purification.
The system can collect density changes in the cleaning pipeline in real time and display the density changes on a system interface in a curve mode, and an operator can conveniently and visually observe the density changes in the pipeline, so that the changes of the cleanliness of the instrument can be known.
The system can gather the liquid level change of water tank, diesel tank, cleaner case, waste liquid case, and when the liquid level was less than the setting value, the system can indicate to add corresponding cleaning medium.
And (3) displaying a flow: drawing a cleaning process picture in a dynamic process schematic diagram form, and displaying the running state of each pipeline, parameters such as the flow velocity of a cleaning medium in the pipeline, the pressure, the temperature and the like and the running state of equipment in a plan diagram form.
And (3) report management: the main operation parameters, the equipment operation state and the like of the system can be recorded in the report form, and the report form can be manually printed and is convenient to check.
Message management: and displaying fault information in the forms of color change, pop-up windows and tables of the main interface, and setting related parameter overrun alarm and equipment fault alarm. Providing an automatic overload protection function for the electronic scale;
user/security management: the level needs to be set for operations such as starting and stopping of the field device, setting of parameters and the like, misoperation is prevented, meanwhile, the interlocking function is set for the field device, and the safety of the device and operators is guaranteed through the functions.
And (3) system management: system user information is established and maintained. The user is managed, logs of user login and operation are recorded, and the logs can be inquired, so that convenience in inquiry is guaranteed, and system safety is guaranteed.
The saving and backup functions are as follows: the test data and related files should be preserved and backed up, and the original records and certificates (reports) can be preserved for more than 7 years.
The software has an upgrading function, and free software upgrading and revising services are provided in time according to reasonable requirements put forward by customers.
Auxiliary equipment and exhaust system:
the air compressor is a mute air compressor, the air flow is 0.6m3/min, the rated pressure is 0.8MPa, and the configuration is 1m 3 The gas storage tank (carbon steel) provides sufficient gas for the device and meets the pressure requirement required by cleaning the device.
A full-automatic instrument cleaning method comprises the following steps:
s1, signal collection, wherein a temperature transmitter, a pressure transmitter, a liquid level transmitter and a density transmitter respectively convert physical signals into analog signals and transmit the analog signals to an A/D conversion module, the A/D conversion module converts the analog signals into electric signals to be transmitted to an interface, a flow rate meter converts the physical signals into pulse signals and transmits the pulse signals to the interface, a regulating valve and a frequency converter convert the physical signals into the analog signals and transmit the analog signals to the A/D conversion module, the A/D conversion module converts the analog signals into the electric signals to be transmitted to the interface, a switch signal transmits an I/O signal to an I/O module, and the I/O module converts the I/O signal into the electric signals to be transmitted to the interface; the interface transmits the received signal to the all-in-one machine, and the all-in-one machine converts the received electric signal into density and cleaning state data in the cleaning process to be displayed on a display screen for monitoring the cleaning effect in real time.
S2, adjusting the mode, selecting and adjusting the corresponding module to act according to the cleaning data displayed in real time, judging whether the real-time cleaning effect reaches the expectation according to the expected cleaning data, when the cleaning density is higher than the expected density, selectively increasing the cleaning flow, the cleaning time and the cleaning strength, when the cleaning density is lower than the expected density, selectively reducing the cleaning time and accelerating the cleaning step, and after the mode is adjusted, the all-in-one machine sends the corresponding signal to the corresponding transmitter and the action structure.
And S3, feeding back a plan, comparing the preset cleaning data with the actual cleaning data, and when the actual data deviate from the expected data, changing the sent signal by the integrated machine based on the fuzzy algorithm of the expected data so that the action mechanism increases extra action amount to finish the cleaning of the expected data.
In the specific operation of the present invention,
cleaning mode of heavy oil instrument:
stage one: when an operator selects a heavy oil cleaning mode in the computer control system, the system automatically starts the heating device to heat water until the temperature is 50 ℃ and then automatically stops. When the temperature sensor detects that the temperature is 50 ℃, the system can automatically open an outlet valve of the diesel tank, open a corresponding cleaning pipeline valve, open an inlet valve of the waste liquid transfer box, the opening degree of the regulating valve is set to be 20%, the circulating pump is started, the whole device can run at an extremely low flow rate, and the flow rate meter monitors the flow rate of a cleaning medium in the cleaning pipeline in real time and displays the flow rate in a control system interface. When the cleaning medium-diesel oil is filled in the whole pipeline, the system reads the density value of the medium in the pipeline, judges the cleanliness of the instrument according to the percentage change of the density of the diesel oil, then starts the ultrasonic generator and adjusts the intensity of the ultrasonic generator according to the cleanliness of the instrument. Opening the ultrasonic generator, adjusting the opening of the regulating valve to be 0%, soaking the instrument in diesel oil and cleaning the instrument with the ultrasonic oil, starting system timing, after 60 seconds, finishing ultrasonic cleaning, adjusting the opening of the regulating valve of the system to 100%, setting the frequency of the frequency converter to be 30Hz, improving the flow rate of a cleaning medium in a pipeline, flushing the instrument, collecting 3 times of density values in the next 6 seconds when the density of the diesel oil in the pipeline is 0.83-0.855 g/ml, and indicating that the cleaning in the first stage is finished if the density values are in the interval. The system automatically closes the circulating pump and closes the diesel outlet valve.
And a second stage: the system automatically opens an outlet valve of the cleaning agent box, opens an inlet valve of the waste liquid transfer box, starts the circulating pump, the opening degree of the regulating valve is 50%, the frequency of the frequency converter is set to be 30Hz, the cleaning agent is enabled to flush the instrument, when the density in the pipeline reaches 0.7-0.8 g/ml, the computer can collect the density value for 3 times in the next 6 seconds, if the density value is in the interval, it is indicated that no diesel oil is left in the instrument, and the cleaning in the second stage is completed. The system can automatically close the circulating pump and close the cleaning agent outlet valve.
And a third stage: when the outlet valve of the cleaning agent tank is closed, the outlet valve of the water tank is opened, the system automatically starts the circulating pump, the frequency is set to be 30Hz, the opening degree of the regulating valve is set to be 50%, the cleaning agent in the instrument is washed by water, when the density of the pipeline is 0.95-1.0g/ml, the computer can collect 3 density values in the next 6 seconds, if the density values are in the interval, the system can open the inlet valve of the water tank, the inlet valve of the waste liquid transfer tank is closed, the opening degree of the regulating valve is set to be 100%, after 30 seconds of circulation, the computer automatically closes the circulating pump, closes the inlet and outlet valves of the water tank, and closes the pipeline valve.
And a fourth stage: when the pipeline valve is closed, the system controls the pipeline emptying valve to be opened, controls the line sweeping air inlet valve to be opened, discharges water in the pipeline and returns to the water tank, monitors the change of pressure in the pipeline in real time, and when the water in the pipeline is emptied and the pressure value is reduced to a certain value, the system closes the line sweeping air inlet valve, closes the pipeline drainage valve and prompts an operator to take down the cleaned instrument.
And a fifth stage: after the full-automatic cleaning of the instrument is finished, the system can record information such as time used in the instrument cleaning process, cleaning media used, cleanliness of the instrument after cleaning, names of operators and the like, and the information is stored in a database in a summarized report form, so that the instrument can be conveniently inquired when needed.
Light oil and chemical product instrument cleaning mode:
stage one: when an operator selects a cleaning mode of light oil and chemical product instruments in a computer control system, the system automatically starts a heating device to heat water until the water is heated to 50 ℃, and then automatically stops the heating, when a temperature sensor detects that the temperature is 50 ℃, the system automatically opens an outlet valve of a cleaning agent box, opens an inlet valve of a waste liquid transfer box, starts a circulating pump, sets the frequency of a frequency converter to be 25Hz, sets the opening of a regulating valve to be 20%, enables the cleaning agent to fill a cleaning pipeline, circulates at an extremely low flow rate to soak the instruments, reads the density value of a medium in the pipeline, judges the cleanliness of the instruments according to the percentage of density change of the cleaning agent, sets the opening of the regulating valve to be 0% by the system, starts an ultrasonic cleaning device to adjust to proper strength, starts a timer to time, sets the opening of the regulating valve to be 50% after 60 seconds, monitors the density change in the pipeline in real time by a density transmitter, calculates to collect 3 density values in the next 6 seconds when the density in the pipeline reaches 0.7-0.8 g/ml, and if the opportunity is in the interval, the oil cleaning in the instruments is completed, the system automatically closes the outlet of the circulating pump, and completes the cleaning stage of the cleaning agent.
And a second stage: when closing cleaning agent case outlet valve, open water tank outlet valve, the system automatic start circulating pump, the frequency sets for 30Hz, the regulating valve aperture sets up to 50%, the detergent in the instrument is washed to the water, when pipeline density is between 0.95-1.0g/ml, the system can gather 3 times density value in following 6 seconds, if all in this interval, the system can open water tank inlet valve, close waste liquid transfer case inlet valve, the regulating valve aperture sets up to 100%, 30 seconds after the circulation, the system self-closing circulating pump, close water tank inlet and outlet valve, close pipeline valve. Stage two clean completion
And a third stage: when the pipeline valve is closed, the system opens the pipeline emptying valve, opens the control line-sweeping air inlet valve, residual water in the pipeline can be discharged and returns to the water tank, the system monitors the change of pressure in the pipeline in real time, when the water in the pipeline is emptied and the pressure value is reduced to a certain value, the system closes the line-sweeping air inlet valve, closes the pipeline drainage valve, and prompts an operator to take down the pipeline to be cleaned.
And a fourth stage: after the full-automatic cleaning of the instrument is finished, the system can record information such as time used in the instrument cleaning process, cleaning media used, cleanliness of the instrument after cleaning, operators and the like, and the information is stored in a database in a summarized report form, so that the instrument is convenient to inquire later.
Cleaning a water meter:
stage one: when an operator selects a water instrument cleaning mode in a computer control program, a computer control system can automatically open an outlet valve of a water tank, open an inlet valve of a waste liquid transfer tank, start a circulating pump, set the frequency of a frequency converter to be 25Hz, set the opening of a regulating valve to be 20%, enable water to fill a cleaning pipeline, circulate at an extremely low flow rate, soak an instrument, read the density value of a medium in the pipeline by the system, judge the cleanliness of the instrument according to the percentage of the change of the water density, set the opening of the regulating valve to be 0%, start an ultrasonic cleaning device, automatically regulate the intensity of ultrasonic waves according to the cleanliness of the instrument, start timing by a timer, set the opening of the regulating valve to be 50% by the system after one minute, improve the flow rate of the pipeline, flush the instrument, monitor the density change in the pipeline in real time by a density transmitter, when the density in the pipeline reaches 0.95-1.00 g/ml, a computer can collect the density value within the next 6 seconds, if the density value is all in the interval, the impurity cleaning in the instrument is finished, the system can close the inlet valve of the waste liquid transfer tank, and close the circulating pump. And finishing the cleaning in the first stage.
And a second stage: when the outlet valve of the waste liquid transfer box is closed, the inlet valve of the water tank is opened, the circulating pump is automatically started by the system, the frequency is set to be 30Hz, the opening of the regulating valve is set to be 100 percent, the water is circulated for 30 seconds, the instrument is flushed by high-flow-rate water, the water returns to the water tank, the circulating pump is automatically closed by the computer after 30 seconds, the inlet and outlet valves of the water tank are closed, the pipeline valve is closed, and the cleaning in the second stage is completed.
And a third stage: when the pipeline valve is closed, the system opens the pipeline emptying valve, opens the control line-sweeping air inlet valve, residual water in the pipeline can be discharged and returns to the water tank, the system monitors the change of pressure in the pipeline in real time, when the water in the pipeline is emptied and the pressure value is reduced to a certain value, the system closes the line-sweeping air inlet valve, closes the pipeline drainage valve, and prompts an operator to take down the cleaned instrument.
And a fourth stage: after the full-automatic cleaning of the instrument is finished, the system can record information such as time used in the instrument cleaning process, cleaning media used, cleanliness of the instrument after cleaning, operators and the like, and the information is stored in a database in a summarized report form, so that the instrument is convenient to inquire later.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.

Claims (9)

1. A full-automatic instrument belt cleaning device which characterized in that includes:
the medium supply mechanism is used for supplying cleaning media with different attributes and different flow rates and is connected with the instrument to be cleaned;
the mode switching mechanism is used for switching a cleaning medium and adjusting the position of an instrument to be cleaned and is connected with the medium supply mechanism; the mode switching mechanism comprises a hydraulic expansion piece, the hydraulic expansion piece adopts a hydraulic control mode to clamp the cleaned instrument, and the clamping force is adjustable;
the intensity adjusting module is used for adjusting the cleaning frequency and the cleaning medium flow rate and is connected with the medium supply mechanism;
the temperature control module is used for adjusting the temperature of the cleaning medium according to the cleaning mode and is connected with the medium supply mechanism;
the state monitoring module is used for judging the cleaning progress according to the density and is connected with the medium supply mechanism, the temperature control module, the strength adjusting module and the mode switching mechanism; the state monitoring module comprises a densimeter;
the separation and purification mechanism is used for purifying the cleaned water and is connected with the medium supply mechanism;
the control system is used for controlling the cleaning instrument and is connected with the state monitoring module and the separation and purification mechanism;
collecting the density of the mixed liquid and cleaning state data in the cleaning process to monitor the cleaning effect in real time, and judging and adjusting the cleaning stage according to the density;
the state monitoring module collects density changes in the cleaning pipeline in real time, so that changes of the cleanliness of the instrument are known;
the integrated machine comprises a temperature transmitter, a pressure transmitter, a liquid level transmitter and a density transmitter, wherein the temperature transmitter, the pressure transmitter, the liquid level transmitter and the density transmitter respectively convert physical signals into analog signals and transmit the analog signals to an A/D conversion module;
selecting and adjusting the corresponding module action according to the cleaning data displayed in real time, judging whether the real-time cleaning effect reaches the expectation according to the predicted cleaning data, selectively increasing the cleaning flow, the cleaning time and the cleaning intensity when the cleaning density is higher than the predicted density, and selectively reducing the cleaning time and accelerating the cleaning step when the cleaning density is lower than the predicted density;
in the control system, cleaning mode selection is provided and is respectively a heavy oil instrument cleaning mode, a light oil and chemical product instrument cleaning mode and a water instrument cleaning mode; the medium supply mechanism comprises a diesel tank, diesel is arranged in the diesel tank, and the medium supply mechanism is mainly used for cleaning an instrument with heavy oil as a medium; the medium supply mechanism comprises a cleaning agent box, and cleaning agents are arranged in the cleaning agent box and used for cleaning instruments taking light oil or chemical products as media and cleaning residual diesel oil on the instruments; the media supply includes a tank with cleaning water therein for rinsing the cleaning agent.
2. The cleaning device for the full-automatic instrument as claimed in claim 1, wherein the medium supply mechanism comprises a water tank, the diesel tank is located beside the water tank, a breather valve fixedly connected with the diesel tank is arranged on the diesel tank, and a waste liquid transfer tank is arranged beside the cleaning agent tank.
3. The fully automatic meter washing device according to claim 1 or 2, wherein the mode switching mechanism comprises: the hydraulic expansion piece is connected with the medium supply mechanism, a switch valve is connected beside the hydraulic expansion piece, and a sweeping line air inlet unit is connected beside the switch valve.
4. The fully automatic instrument cleaning device according to claim 1 or 2, wherein the intensity adjusting module comprises: and the frequency converter is connected with the mode switching mechanism, a flow rate adjusting valve is connected beside the frequency converter, and an ultrasonic generator is connected beside the flow rate adjusting valve.
5. The apparatus of claim 1, wherein the temperature control module comprises a heater tube.
6. The apparatus of claim 1, wherein the status monitoring module comprises a liquid level transmitter, a pressure transmitter, and a temperature transmitter.
7. The fully automatic meter washing device of claim 1, wherein the control system comprises an I/O module, an a/D module, a pulse shaping module, and a power module.
8. The apparatus according to claim 1, wherein the separation and purification mechanism comprises a centrifuge and a reverse osmosis water purifier connected to the centrifuge.
9. A full-automatic instrument cleaning method applied to a full-automatic instrument cleaning device according to any one of claims 1 to 8, characterized by comprising the following steps:
s1, signal acquisition;
s2, adjusting a mode;
and S3, feeding back a plan.
CN202111361446.3A 2021-11-17 2021-11-17 Full-automatic instrument cleaning device and method Active CN114101190B (en)

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