CN112945006A - Anti-blocking method for autoclave cooling system - Google Patents
Anti-blocking method for autoclave cooling system Download PDFInfo
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- CN112945006A CN112945006A CN202110534922.0A CN202110534922A CN112945006A CN 112945006 A CN112945006 A CN 112945006A CN 202110534922 A CN202110534922 A CN 202110534922A CN 112945006 A CN112945006 A CN 112945006A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
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Abstract
The invention discloses an anti-blocking method for an autoclave cooling system, which belongs to the technical field of autoclave curing processes and comprises the following steps: a. firstly, respectively connecting a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer with an upper computer; b. the upper computer is connected with a data analyzer, and the data analyzer is connected with the pickling system; c. collecting water flow data and water temperature data through an upper computer; d. and the data analyzer reads and analyzes the water flow data and the water temperature data, and sends a control instruction to control the pickling system to pickle according to an analysis result. According to the method, the data model is constructed by acquiring the data of the sensor, the data model is utilized to carry out predictive analysis on the blockage fault of the autoclave cooling system, the blockage is treated before the autoclave cooling system is stopped and maintained, and the problem of capacity waste caused by the reduction of the cooling capacity of the autoclave cooling system in the autoclave curing process can be effectively solved.
Description
Technical Field
The invention relates to the technical field of autoclave curing processes, in particular to an anti-blocking method for an autoclave cooling system.
Background
The autoclave curing process is a main method for producing composite material components, and the high temperature and the pressure generated by compressed gas in the autoclave are utilized to heat and pressurize a composite material blank to complete curing molding. The whole part curing and forming process needs to go through a plurality of stages of temperature rising, constant temperature and temperature lowering. The cooling of the autoclave is mainly carried out by means of a cooling system of the autoclave. The working principle of the cooling system is that a circulating water pipeline is additionally arranged at a main heating part, and the production environment of the equipment is cooled by circulating water, so that the composite material component meets the manufacturing requirement. Specifically, cold water is pumped into the pipeline by a cold water pump, flows into the cooler through a thin precooling pipeline in a high-temperature area above 110 ℃, and flows into the cooler through a thick main cold pipeline in a low-temperature area below 110 ℃. The low-temperature water in the cooler is subjected to heat exchange with air in the tank, so that the temperature of the tank is reduced. The temperature control table controls the opening degree of the pre-cooling valve or the main cooling valve according to the difference value between the theoretical temperature and the actual temperature, and controls the cooling rate. And hot water flowing out of the cooler enters the hot water tank, is pumped into the cooling tower through the hot water pump, exchanges heat with the ambient temperature to finish cooling, and then flows into the cold water tank to be stored.
However, due to the problem of the quality of the adopted cooling water, the pipeline in the cooler is easy to scale, so that the heat exchange rate of the cold water and the medium in the tank is gradually reduced along with the time, and at the moment, a temperature control meter is needed to control the opening degree of the water valve to be increased so as to ensure that the actual tank temperature is as close to the theoretical temperature as possible. When the pipeline is further scaled and exceeds the limit of the capacity of reducing the temperature by increasing the water quantity, the difference between the tank temperature and the set temperature of the temperature control table is enlarged, and the temperature reduction effect is reduced. At this time, the autoclave is difficult to meet the process requirements of composite material manufacturing, shutdown treatment needs to be carried out on the autoclave, the cooler needs to be disassembled, and the cooler needs to be installed again after being cleaned and descaled by weak acid. This process takes 5 days. The period of cleaning the autoclave cooler after scaling is about 6 months, and the time point of failure is unpredictable, which often causes emergency shutdown of equipment and waste of capacity of key equipment.
Chinese patent publication No. CN 108297525a, published as 2018, 07, 20 discloses a longitudinal circulation autoclave externally provided with a cooling and heating circulation device, which is characterized in that: comprises a main tank body, a cold and hot circulating device, an air blowing connecting pipeline and an air suction connecting pipeline; the cold and hot circulating device is arranged outside the main tank body; the blowing connecting pipeline and the air suction connecting pipeline are both connected between the main tank body and the cold-hot circulating device.
The longitudinal circulation autoclave externally provided with a cold and hot circulation device disclosed in the patent document obviously increases the loading rate because the complex heating, cooling and circulation device is moved out of the main tank body; the new longitudinal circulation mode shortens the circulation path, and the temperature distribution in the tank is uniform by matching with the airflow distributor, so that the temperature difference between the upper part and the lower part is reduced, and the temperature difference between the front part and the rear part is almost zero. However, the problem of capacity waste caused by the reduction of the cooling capacity of the autoclave cooling system in the autoclave curing process cannot be effectively avoided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an anti-blocking method for an autoclave cooling system.
The invention is realized by the following technical scheme:
an anti-clogging method for an autoclave cooling system is characterized by comprising the following steps:
a. firstly, a first flowmeter is arranged on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, a second flowmeter is arranged at the rear end of a water outlet direction of a main cold valve on a main cooling water inlet pipeline, a thermometer is arranged at the front end of the water inlet direction of the main cold valve on the main cooling water inlet pipeline, a fourth flowmeter is arranged at the rear end of a water outlet direction of a precooling valve on a precooling water outlet pipeline, a third flowmeter is arranged on the precooling water inlet pipeline, and the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are respectively connected with an upper computer;
b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump;
c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer;
d. and the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system acquired by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result.
The step c specifically comprises the following steps:
monitoring first water flow data of a main cooling water outlet pipeline of the cooler by a first flowmeter;
monitoring second water flow data of a main cooling water inlet pipeline of the cooler by a second flowmeter;
monitoring third water flow data of a pre-cooling water outlet pipeline of the cooler by a third flow meter;
monitoring fourth water flow data of a pre-cooling water inlet pipeline of the cooler by a fourth flowmeter;
the thermometer monitors water temperature data of the main cooling water inlet pipeline;
and the upper computer collects and stores the first water flow data, the second water flow data, the third water flow data, the fourth water flow data and the water temperature data.
In the step d, sending a control instruction to control the pickling system to carry out pickling according to the analysis result specifically includes:
when the ratio of the first water flow data to the historical water flow data of the main cooling water outlet pipeline is smaller than a first set ratio L, or the ratio of the second water flow data to the historical water flow data of the main cooling water inlet pipeline is smaller than the first set ratio L, the cooler, the main cooling water outlet pipeline or the main cooling water inlet pipeline is judged to be blocked, and the data analyzer sends a pickling control instruction to the pickling system;
when the ratio of the third water flow data to the historical water flow data of the pre-cooling water outlet pipeline is smaller than a second set ratio M, or the ratio of the fourth water flow data to the historical water flow data of the pre-cooling water inlet pipeline is smaller than the second set ratio M, judging that the cooler, the pre-cooling water outlet pipeline or the pre-cooling water inlet pipeline is blocked, and sending an acid washing control instruction to an acid washing system by a data analyzer;
calculating an actual cooling rate through the water temperature data, judging that the main cooling water outlet pipeline or the main cooling water inlet pipeline is blocked when the ratio of the actual cooling rate to the set cooling rate is smaller than a third set ratio N, and sending an acid washing control instruction to the acid washing system by the data analyzer;
when the pickling system receives a pickling control instruction from the data analyzer, the pickling pump is controlled to pump pickling solution in the pickling tank into a pipeline of the autoclave cooling system for pickling;
the first set ratio L is an evaluation value for evaluating whether the main cooling pipeline and the cooling water are blocked, and the ratio of the current flow value to the historical average flow value is used as the value of L;
the second set ratio M is an evaluation value for evaluating whether the precooling pipeline and the cooler are blocked, and the ratio of the current flow value to the historical average flow value is taken as the value of M;
the third set ratio N is an evaluation value for judging the blockage of the cooling pipeline and the cooler, and the ratio of the current flow value to the historical average flow value is used as the value of N.
In the step d, water flow data and water temperature data in the autoclave cooling system monitored by the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are continuously collected by the upper computer during acid washing:
when the ratio of first water flow data of a main cooling water outlet pipeline of a first flowmeter monitoring cooler to second water flow data of a main cooling water inlet pipeline of a second flowmeter monitoring cooler, the ratio of third water flow data of a pre-cooling water outlet pipeline of a third flowmeter monitoring cooler to fourth water flow data of a pre-cooling water inlet pipeline of a fourth flowmeter monitoring cooler are both larger than a fourth set ratio K, and the ratio of the actual cooling rate to the set cooling rate is larger than a third set ratio N, judging that a pipeline of the autoclave cooling system is dredged, and sending a pickling stop control instruction to the pickling system;
the fourth set ratio K is an evaluation value for judging whether the cooler and the pipeline are cleaned and dredged, and the ratio of the value of the third flowmeter to the value of the first flowmeter is used as the value of K or the ratio of the value of the third flowmeter to the value of the fourth flowmeter is used as the value of K;
and when the pickling system receives a pickling stopping control instruction from the data analyzer, controlling the pickling pump to stop running.
The historical water flow data of the main cooling water outlet pipeline and the historical water flow data of the main cooling water inlet pipeline both refer to the corresponding water flow data of the main cooling water outlet pipeline and the water flow data of the main cooling water inlet pipeline under the condition of no blockage when the autoclave cooling system operates normally.
The pre-cooling water outlet pipeline historical water flow data and the pre-cooling water inlet pipeline historical water flow data are corresponding pre-cooling water outlet pipeline water flow data and pre-cooling water inlet pipeline water flow data under the condition that no blockage exists when the autoclave cooling system operates normally.
The set cooling rate refers to the cooling rate under the condition of no blockage when the autoclave cooling system is in normal operation.
The water level data of the hot water pool monitored by the floating ball water level meter are collected through the upper computer, the data analyzer reads and analyzes the water level data of the hot water pool collected by the upper computer, and when the read water level data is smaller than a water level set value, water supplementing alarming is carried out.
The water quality monitoring system further comprises a water quality sensor, a data analyzer and a water quality alarm, wherein the water quality sensor is used for monitoring the water quality of the hot water pool, the data analyzer is used for reading and analyzing the water quality data of the hot water pool, which is collected by the upper computer, and the water changing alarm is carried out when the read water quality data is smaller than a water quality set value.
The invention has the beneficial effects that:
firstly, mounting a first flowmeter on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, mounting a second flowmeter on the rear end of a main cold valve on a main cooling water inlet pipeline in the water outlet direction, mounting a thermometer on the front end of the main cold valve on the main cooling water inlet pipeline in the water inlet direction, mounting a fourth flowmeter on the rear end of a precooling valve on a precooling water outlet pipeline in the water outlet direction, mounting a third flowmeter on the precooling water inlet pipeline, and respectively connecting the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer with an upper computer; b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump; c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer; d. the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system collected by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result; compared with the prior art, the formed complete technical scheme has the advantages that the data model is built through the data of the acquisition sensor, the data model is used for predicting and analyzing the blocking fault of the autoclave cooling system, the blocking is treated before the autoclave cooling system is stopped and maintained, and the problem of capacity waste caused by the reduction of the cooling capacity of the autoclave cooling system in the autoclave curing process can be effectively solved.
Drawings
The invention will be further described in detail with reference to the drawings and the detailed description, wherein:
FIG. 1 is a schematic diagram of the cooling system of the autoclave of the present invention.
Detailed Description
Example 1
Referring to fig. 1, an anti-clogging method for an autoclave cooling system comprises the following steps:
a. firstly, a first flowmeter is arranged on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, a second flowmeter is arranged at the rear end of a water outlet direction of a main cold valve on a main cooling water inlet pipeline, a thermometer is arranged at the front end of the water inlet direction of the main cold valve on the main cooling water inlet pipeline, a fourth flowmeter is arranged at the rear end of a water outlet direction of a precooling valve on a precooling water outlet pipeline, a third flowmeter is arranged on the precooling water inlet pipeline, and the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are respectively connected with an upper computer;
b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump;
c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer;
d. and the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system acquired by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result.
Example 2
Referring to fig. 1, an anti-clogging method for an autoclave cooling system comprises the following steps:
a. firstly, a first flowmeter is arranged on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, a second flowmeter is arranged at the rear end of a water outlet direction of a main cold valve on a main cooling water inlet pipeline, a thermometer is arranged at the front end of the water inlet direction of the main cold valve on the main cooling water inlet pipeline, a fourth flowmeter is arranged at the rear end of a water outlet direction of a precooling valve on a precooling water outlet pipeline, a third flowmeter is arranged on the precooling water inlet pipeline, and the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are respectively connected with an upper computer;
b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump;
c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer;
d. and the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system acquired by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result.
The step c specifically comprises the following steps:
monitoring first water flow data of a main cooling water outlet pipeline of the cooler by a first flowmeter;
monitoring second water flow data of a main cooling water inlet pipeline of the cooler by a second flowmeter;
monitoring third water flow data of a pre-cooling water outlet pipeline of the cooler by a third flow meter;
monitoring fourth water flow data of a pre-cooling water inlet pipeline of the cooler by a fourth flowmeter;
the thermometer monitors water temperature data of the main cooling water inlet pipeline;
and the upper computer collects and stores the first water flow data, the second water flow data, the third water flow data, the fourth water flow data and the water temperature data.
In the step d, sending a control instruction to control the pickling system to carry out pickling according to the analysis result specifically includes:
when the ratio of the first water flow data to the historical water flow data of the main cooling water outlet pipeline is smaller than a first set ratio L, or the ratio of the second water flow data to the historical water flow data of the main cooling water inlet pipeline is smaller than the first set ratio L, the cooler, the main cooling water outlet pipeline or the main cooling water inlet pipeline is judged to be blocked, and the data analyzer sends a pickling control instruction to the pickling system;
when the ratio of the third water flow data to the historical water flow data of the pre-cooling water outlet pipeline is smaller than a second set ratio M, or the ratio of the fourth water flow data to the historical water flow data of the pre-cooling water inlet pipeline is smaller than the second set ratio M, judging that the cooler, the pre-cooling water outlet pipeline or the pre-cooling water inlet pipeline is blocked, and sending an acid washing control instruction to an acid washing system by a data analyzer;
calculating an actual cooling rate through the water temperature data, judging that the main cooling water outlet pipeline or the main cooling water inlet pipeline is blocked when the ratio of the actual cooling rate to the set cooling rate is smaller than a third set ratio N, and sending an acid washing control instruction to the acid washing system by the data analyzer;
when the pickling system receives a pickling control instruction from the data analyzer, the pickling pump is controlled to pump pickling solution in the pickling tank into a pipeline of the autoclave cooling system for pickling;
the first set ratio L is an evaluation value for evaluating whether the main cooling pipeline and the cooling water are blocked, and the ratio of the current flow value to the historical average flow value is used as the value of L;
the second set ratio M is an evaluation value for evaluating whether the precooling pipeline and the cooler are blocked, and the ratio of the current flow value to the historical average flow value is taken as the value of M;
the third set ratio N is an evaluation value for judging the blockage of the cooling pipeline and the cooler, and the ratio of the current flow value to the historical average flow value is used as the value of N.
In the step d, water flow data and water temperature data in the autoclave cooling system monitored by the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are continuously collected by the upper computer during acid washing:
when the ratio of first water flow data of a main cooling water outlet pipeline of a first flowmeter monitoring cooler to second water flow data of a main cooling water inlet pipeline of a second flowmeter monitoring cooler, the ratio of third water flow data of a pre-cooling water outlet pipeline of a third flowmeter monitoring cooler to fourth water flow data of a pre-cooling water inlet pipeline of a fourth flowmeter monitoring cooler are both larger than a fourth set ratio K, and the ratio of the actual cooling rate to the set cooling rate is larger than a third set ratio N, judging that a pipeline of the autoclave cooling system is dredged, and sending a pickling stop control instruction to the pickling system;
the fourth set ratio K is an evaluation value for judging whether the cooler and the pipeline are cleaned and dredged, and the ratio of the value of the third flowmeter to the value of the first flowmeter is used as the value of K or the ratio of the value of the third flowmeter to the value of the fourth flowmeter is used as the value of K;
and when the pickling system receives a pickling stopping control instruction from the data analyzer, controlling the pickling pump to stop running.
Example 3
Referring to fig. 1, an anti-clogging method for an autoclave cooling system comprises the following steps:
a. firstly, a first flowmeter is arranged on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, a second flowmeter is arranged at the rear end of a water outlet direction of a main cold valve on a main cooling water inlet pipeline, a thermometer is arranged at the front end of the water inlet direction of the main cold valve on the main cooling water inlet pipeline, a fourth flowmeter is arranged at the rear end of a water outlet direction of a precooling valve on a precooling water outlet pipeline, a third flowmeter is arranged on the precooling water inlet pipeline, and the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are respectively connected with an upper computer;
b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump;
c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer;
d. and the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system acquired by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result.
The step c specifically comprises the following steps:
monitoring first water flow data of a main cooling water outlet pipeline of the cooler by a first flowmeter;
monitoring second water flow data of a main cooling water inlet pipeline of the cooler by a second flowmeter;
monitoring third water flow data of a pre-cooling water outlet pipeline of the cooler by a third flow meter;
monitoring fourth water flow data of a pre-cooling water inlet pipeline of the cooler by a fourth flowmeter;
the thermometer monitors water temperature data of the main cooling water inlet pipeline;
and the upper computer collects and stores the first water flow data, the second water flow data, the third water flow data, the fourth water flow data and the water temperature data.
In the step d, sending a control instruction to control the pickling system to carry out pickling according to the analysis result specifically includes:
when the ratio of the first water flow data to the historical water flow data of the main cooling water outlet pipeline is smaller than a first set ratio L, or the ratio of the second water flow data to the historical water flow data of the main cooling water inlet pipeline is smaller than the first set ratio L, the cooler, the main cooling water outlet pipeline or the main cooling water inlet pipeline is judged to be blocked, and the data analyzer sends a pickling control instruction to the pickling system;
when the ratio of the third water flow data to the historical water flow data of the pre-cooling water outlet pipeline is smaller than a second set ratio M, or the ratio of the fourth water flow data to the historical water flow data of the pre-cooling water inlet pipeline is smaller than the second set ratio M, judging that the cooler, the pre-cooling water outlet pipeline or the pre-cooling water inlet pipeline is blocked, and sending an acid washing control instruction to an acid washing system by a data analyzer;
calculating an actual cooling rate through the water temperature data, judging that the main cooling water outlet pipeline or the main cooling water inlet pipeline is blocked when the ratio of the actual cooling rate to the set cooling rate is smaller than a third set ratio N, and sending an acid washing control instruction to the acid washing system by the data analyzer;
when the pickling system receives a pickling control instruction from the data analyzer, the pickling pump is controlled to pump pickling solution in the pickling tank into a pipeline of the autoclave cooling system for pickling;
the first set ratio L is an evaluation value for evaluating whether the main cooling pipeline and the cooling water are blocked, and the ratio of the current flow value to the historical average flow value is used as the value of L;
the second set ratio M is an evaluation value for evaluating whether the precooling pipeline and the cooler are blocked, and the ratio of the current flow value to the historical average flow value is taken as the value of M;
the third set ratio N is an evaluation value for judging the blockage of the cooling pipeline and the cooler, and the ratio of the current flow value to the historical average flow value is used as the value of N.
In the step d, water flow data and water temperature data in the autoclave cooling system monitored by the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are continuously collected by the upper computer during acid washing:
when the ratio of first water flow data of a main cooling water outlet pipeline of a first flowmeter monitoring cooler to second water flow data of a main cooling water inlet pipeline of a second flowmeter monitoring cooler, the ratio of third water flow data of a pre-cooling water outlet pipeline of a third flowmeter monitoring cooler to fourth water flow data of a pre-cooling water inlet pipeline of a fourth flowmeter monitoring cooler are both larger than a fourth set ratio K, and the ratio of the actual cooling rate to the set cooling rate is larger than a third set ratio N, judging that a pipeline of the autoclave cooling system is dredged, and sending a pickling stop control instruction to the pickling system;
the fourth set ratio K is an evaluation value for judging whether the cooler and the pipeline are cleaned and dredged, and the ratio of the value of the third flowmeter to the value of the first flowmeter is used as the value of K or the ratio of the value of the third flowmeter to the value of the fourth flowmeter is used as the value of K;
and when the pickling system receives a pickling stopping control instruction from the data analyzer, controlling the pickling pump to stop running.
The historical water flow data of the main cooling water outlet pipeline and the historical water flow data of the main cooling water inlet pipeline both refer to the corresponding water flow data of the main cooling water outlet pipeline and the water flow data of the main cooling water inlet pipeline under the condition of no blockage when the autoclave cooling system operates normally.
The pre-cooling water outlet pipeline historical water flow data and the pre-cooling water inlet pipeline historical water flow data are corresponding pre-cooling water outlet pipeline water flow data and pre-cooling water inlet pipeline water flow data under the condition that no blockage exists when the autoclave cooling system operates normally.
The set cooling rate refers to the cooling rate under the condition of no blockage when the autoclave cooling system is in normal operation.
The water level data of the hot water pool monitored by the floating ball water level meter are collected through the upper computer, the data analyzer reads and analyzes the water level data of the hot water pool collected by the upper computer, and when the read water level data is smaller than a water level set value, water supplementing alarming is carried out.
The water quality monitoring system further comprises a water quality sensor, a data analyzer and a water quality alarm, wherein the water quality sensor is used for monitoring the water quality of the hot water pool, the data analyzer is used for reading and analyzing the water quality data of the hot water pool, which is collected by the upper computer, and the water changing alarm is carried out when the read water quality data is smaller than a water quality set value.
a. Firstly, a first flowmeter is arranged on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, a second flowmeter is arranged at the rear end of a water outlet direction of a main cold valve on a main cooling water inlet pipeline, a thermometer is arranged at the front end of the water inlet direction of the main cold valve on the main cooling water inlet pipeline, a fourth flowmeter is arranged at the rear end of a water outlet direction of a precooling valve on a precooling water outlet pipeline, a third flowmeter is arranged on the precooling water inlet pipeline, and the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are respectively connected with an upper computer; b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump; c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer; d. the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system collected by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result; compared with the prior art, the formed complete technical scheme has the advantages that the data model is built through the data of the acquisition sensor, the data model is used for predicting and analyzing the blocking fault of the autoclave cooling system, the blocking is treated before the autoclave cooling system is stopped and maintained, and the problem of capacity waste caused by the reduction of the cooling capacity of the autoclave cooling system in the autoclave curing process can be effectively solved.
The pickling process of the invention is as follows:
the first set ratio L is set to 0.7, the third set ratio N is set to 0.65, and the fourth set ratio K is set to 0.8.
And taking the first flow meter value/the third flow meter value to be 0.6 cubic meter per minute, wherein the average value of the data collected by the first flow meter value/the third flow meter in the history of non-blockage is 1 cubic meter per minute, so that the ratio 0.6 of the first set ratio L/the third set ratio N is found to be less than the required threshold values of 0.7 and 0.65, and the acid cleaning system is started to dredge the acid cleaning when the pipeline or the cooler is blocked.
And monitoring the change of the values of the first flowmeter, the third flowmeter and the fourth flowmeter during pickling.
The first flow rate is 0.9 cubic meter per minute, the fourth flow rate is 0.98 cubic meter per minute, and the third flow rate is 0.85 cubic meter per minute. A fourth set ratio K value of 0.94 and 0.86, both greater than 0.8, is obtained. The pipeline is judged to be dredged and the acid washing is stopped.
The set cooling rate is 2 ℃ per minute, the real-time cooling rate is 1 ℃ per minute at that time, and a third set ratio N is 0.5 and is less than 0.65 specified by the threshold value. And starting the pickling system to carry out pickling dredging when the pipeline or the cooler is blocked.
Claims (9)
1. An anti-clogging method for an autoclave cooling system is characterized by comprising the following steps:
a. firstly, a first flowmeter is arranged on a main cooling water outlet pipeline between a cooler of an autoclave cooling system and a hot water pool for storing hot water, a second flowmeter is arranged at the rear end of a water outlet direction of a main cold valve on a main cooling water inlet pipeline, a thermometer is arranged at the front end of the water inlet direction of the main cold valve on the main cooling water inlet pipeline, a fourth flowmeter is arranged at the rear end of a water outlet direction of a precooling valve on a precooling water outlet pipeline, a third flowmeter is arranged on the precooling water inlet pipeline, and the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are respectively connected with an upper computer;
b. communicating a pipeline of a pickling tank in a pickling system with a pipeline of an autoclave cooling system through a pickling pump, arranging a floating ball water level meter and a water quality sensor in a hot water tank of the autoclave cooling system, respectively connecting the floating ball water level meter and the water quality sensor with an upper computer, connecting a data analyzer on the upper computer, connecting the data analyzer with the pickling system, connecting the hot water tank with a cooling tower through the hot water pump, and pumping hot water from the hot water tank into the cooling tower through the hot water pump for cooling, and pumping cooled water into a main cooling water inlet pipeline through a supercooled water pump;
c. collecting water flow data and water temperature data in the autoclave cooling system, which are monitored by a first flowmeter, a second flowmeter, a third flowmeter, a fourth flowmeter and a thermometer, by an upper computer;
d. and the data analyzer reads and analyzes water flow data and water temperature data in the autoclave cooling system acquired by the upper computer, and sends a control instruction to control the pickling system to carry out pickling according to an analysis result.
2. The method of claim 1 for preventing blockage in an autoclave cooling system, comprising: the step c specifically comprises the following steps:
monitoring first water flow data of a main cooling water outlet pipeline of the cooler by a first flowmeter;
monitoring second water flow data of a main cooling water inlet pipeline of the cooler by a second flowmeter;
monitoring third water flow data of a pre-cooling water outlet pipeline of the cooler by a third flow meter;
monitoring fourth water flow data of a pre-cooling water inlet pipeline of the cooler by a fourth flowmeter;
the thermometer monitors water temperature data of the main cooling water inlet pipeline;
and the upper computer collects and stores the first water flow data, the second water flow data, the third water flow data, the fourth water flow data and the water temperature data.
3. The method of claim 1 for preventing blockage in an autoclave cooling system, comprising: in the step d, sending a control instruction to control the pickling system to carry out pickling according to the analysis result specifically includes:
when the ratio of the first water flow data to the historical water flow data of the main cooling water outlet pipeline is smaller than a first set ratio L, or the ratio of the second water flow data to the historical water flow data of the main cooling water inlet pipeline is smaller than the first set ratio L, judging that one or more of a cooler, the main cooling water outlet pipeline or the main cooling water inlet pipeline is blocked, and sending a pickling control instruction to a pickling system by a data analyzer;
when the ratio of the third water flow data to the historical water flow data of the pre-cooling water outlet pipeline is smaller than a second set ratio M, or the ratio of the fourth water flow data to the historical water flow data of the pre-cooling water inlet pipeline is smaller than the second set ratio M, judging that one or more of the cooler, the pre-cooling water outlet pipeline or the pre-cooling water inlet pipeline is blocked, and sending an acid washing control instruction to an acid washing system by a data analyzer;
calculating an actual cooling rate through the water temperature data, judging that the main cooling water outlet pipeline or the main cooling water inlet pipeline is blocked when the ratio of the actual cooling rate to the set cooling rate is smaller than a third set ratio N, and sending an acid washing control instruction to the acid washing system by the data analyzer;
when the pickling system receives a pickling control instruction from the data analyzer, the pickling pump is controlled to pump pickling solution in the pickling tank into a pipeline of the autoclave cooling system for pickling;
the first set ratio L is an evaluation value for evaluating whether the main cooling pipeline and the cooling water are blocked, and the ratio of the current flow value to the historical average flow value is used as the value of L;
the second set ratio M is an evaluation value for evaluating whether the precooling pipeline and the cooler are blocked, and the ratio of the current flow value to the historical average flow value is taken as the value of M;
the third set ratio N is an evaluation value for judging the blockage of the cooling pipeline and the cooler, and the ratio of the current flow value to the historical average flow value is used as the value of N.
4. The method of claim 3 for preventing clogging of autoclave cooling systems, comprising: in the step d, water flow data and water temperature data in the autoclave cooling system monitored by the first flowmeter, the second flowmeter, the third flowmeter, the fourth flowmeter and the thermometer are continuously collected by the upper computer during acid washing:
when the ratio of first water flow data of a main cooling water outlet pipeline of a first flowmeter monitoring cooler to second water flow data of a main cooling water inlet pipeline of a second flowmeter monitoring cooler, the ratio of third water flow data of a pre-cooling water outlet pipeline of a third flowmeter monitoring cooler to fourth water flow data of a pre-cooling water inlet pipeline of a fourth flowmeter monitoring cooler are both larger than a fourth set ratio K, and the ratio of the actual cooling rate to the set cooling rate is larger than a third set ratio N, judging that a pipeline of the autoclave cooling system is dredged, and sending a pickling stop control instruction to the pickling system;
the fourth set ratio K is an evaluation value for judging whether the cooler and the pipeline are cleaned and dredged, and the ratio of the value of the third flowmeter to the value of the first flowmeter is used as the value of K or the ratio of the value of the third flowmeter to the value of the fourth flowmeter is used as the value of K;
and when the pickling system receives a pickling stopping control instruction from the data analyzer, controlling the pickling pump to stop running.
5. The method of claim 3 for preventing clogging of autoclave cooling systems, comprising: the historical water flow data of the main cooling water outlet pipeline and the historical water flow data of the main cooling water inlet pipeline both refer to the corresponding water flow data of the main cooling water outlet pipeline and the water flow data of the main cooling water inlet pipeline under the condition of no blockage when the autoclave cooling system operates normally.
6. The method of claim 3 for preventing clogging of autoclave cooling systems, comprising: the pre-cooling water outlet pipeline historical water flow data and the pre-cooling water inlet pipeline historical water flow data are corresponding pre-cooling water outlet pipeline water flow data and pre-cooling water inlet pipeline water flow data under the condition that no blockage exists when the autoclave cooling system operates normally.
7. The method of claim 3 for preventing clogging of autoclave cooling systems, comprising: the set cooling rate refers to the cooling rate under the condition of no blockage when the autoclave cooling system is in normal operation.
8. The method of claim 1 for preventing blockage in an autoclave cooling system, comprising: the water level data of the hot water pool monitored by the floating ball water level meter are collected through the upper computer, the data analyzer reads and analyzes the water level data of the hot water pool collected by the upper computer, and when the read water level data is smaller than a water level set value, water supplementing alarming is carried out.
9. The method of claim 1 for preventing blockage in an autoclave cooling system, comprising: the water quality monitoring system further comprises a water quality sensor, a data analyzer and a water quality alarm, wherein the water quality sensor is used for monitoring the water quality of the hot water pool, the data analyzer is used for reading and analyzing the water quality data of the hot water pool, which is collected by the upper computer, and the water changing alarm is carried out when the read water quality data is smaller than a water quality set value.
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| CN117067633A (en) * | 2023-10-12 | 2023-11-17 | 成都飞机工业（集团）有限责任公司 | Condensing system state monitoring method based on standard condensing curve |
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