CN113587116B - Control method, control system and equipment for protection equipment in water-cooling circulation system - Google Patents
Control method, control system and equipment for protection equipment in water-cooling circulation system Download PDFInfo
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- CN113587116B CN113587116B CN202111139726.XA CN202111139726A CN113587116B CN 113587116 B CN113587116 B CN 113587116B CN 202111139726 A CN202111139726 A CN 202111139726A CN 113587116 B CN113587116 B CN 113587116B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
The invention belongs to the technical field of power generation, and particularly relates to a control method, a control system and equipment for protection equipment in a water-cooling circulation system, wherein the control method for the protection equipment in the water-cooling circulation system comprises the following steps: constructing multi-stage responses in a water-cooling circulation system, and constructing a processing scheme of each stage of responses; and judging the response level in the water-cooling circulation system and executing a response processing scheme, thereby realizing real-time automatic monitoring of field operation data or operation and solving the problem that the equipment is damaged due to the fact that important information is neglected by visual fatigue easily in manual monitoring.
Description
Technical Field
The invention belongs to the technical field of power generation, and relates to a control method, a control system and equipment for protecting equipment in a water-cooling circulation system, which are used for controlling the water-cooling circulation system in a water-cooling grate incinerator during power generation.
Background
The water-cooled grate incinerator is a mechanical incinerator specially used for incinerating and treating high-heat value and violently burning solid wastes, the solid wastes can be waste tires and waste paper produced by printing enterprises, leftover wastes and leather edges produced by clothing processing industry and the like, and the incinerated solid wastes are used for generating electricity. Because of the high calorific value and the intense combustion of such materials burned on the grate segments, very high temperatures are generated on the burning grate segments and the grate segments must be cooled in some way to enable continuous production. The circulating system takes industrial demineralized water as a cooling medium in the circulating pipeline, the heat of the fire grate segments is taken away by the demineralized water in a circulating mode to cool the fire grate segments, then the heat is dissipated to the external environment by the heat exchanger for cooling the demineralized water, and the cooled water returns to the fire grate to absorb heat again, so that the aim of recycling is fulfilled. In the past, the system is manually controlled, and a plurality of problems exist in the actual operation process, mainly the damage of equipment caused by the conditions of water leakage and pipe blockage. There are mainly the following problems: 1) operators need to observe more data at ordinary times, sometimes do not notice abnormal operation data of the circulating system and do not take measures to cause equipment damage, namely monitoring is in trouble; 2) the water circulation has numerous devices, one fault can cause problems to other devices or instruments of the system, for example, the outlet pipeline of the circulation pump is suddenly blocked, the circulation pump is stopped, the pressure, the flow and the temperature of the whole monitoring man-machine interface are all in alarm, an operator is in urgent full of sweat and does not know where to process, and the operator cannot operate the devices in time by passing the attention, so that great loss is caused, and the timeliness and orderliness of treatment measures are problematic. 3) The manual control also has the problems of high working strength of operators, more required equipment personnel, high requirement on the quality of the operators and the like, so that the improvement of the production efficiency is not facilitated, and the cost reduction and the efficiency improvement of enterprises are realized.
Therefore, a new control method, a new control system and a new device for protecting equipment in a water cooling circulation system need to be designed based on the technical problems.
Disclosure of Invention
The invention aims to provide a control method, a control system and equipment for protecting equipment in a water-cooling circulation system.
In order to solve the technical problem, the invention provides a control method of a protection device in a water-cooling circulation system, which comprises the following steps:
constructing multi-stage responses in a water-cooling circulation system, and constructing a processing scheme of each stage of responses; and
and judging the response level in the water-cooling circulation system and executing a response processing scheme.
Further, the method for constructing the multi-stage response in the water-cooling circulation system and constructing the processing scheme of the multi-stage response comprises the following steps:
and constructing three levels of responses including a first level response, a second level response and a third level response, and setting a processing scheme of the corresponding level response.
Further, the first stage response comprises:
when any one or more places of TW 1-TWn give An alarm, the alarm content is that the outlet water of the corresponding fire grate sheet An exceeds the temperature;
TWn is a mechanical temperature switch for water temperature at an outlet of the nth fire grate segment; an is the nth fire grate segment.
Further, the first stage response further comprises:
the change of the circulating water flow or the measured real-time medium pressure in the pipeline within the preset time exceeds a set threshold value to trigger alarm;
∆FT=|FTn+t- FTn|；
wherein, the Δ FT is the circulating water flow change value; FTnThe circulating water flow at the moment n; FTn+tThe flow rate of the circulating water after the preset time t;
∆P=|Pn+t-Pn|；
wherein, the Δ P is the real-time medium pressure change value measured in the pipeline; pnMeasuring real-time medium pressure in the pipeline at the time n; pn+tMeasuring the real-time medium pressure in the pipeline after the preset time t;
∆FT>X1|∆P>X2；
wherein, | is or; x1 is a circulating water flow change threshold; x2 is the threshold for real-time medium pressure change measured in the pipeline.
Further, the processing scheme of the first-stage response comprises:
and controlling the circulating pump M1 or M2 to accelerate to a preset maximum frequency according to a preset frequency, and closing the electric switch valves V1 and V2.
Further, the second level of response comprises:
any two of the liquid level switches LW 1-LW 3 have low liquid level alarm, and at the moment, the liquid level of the chute is displayed to be low;
the processing scheme of the second-stage response comprises the following steps:
the electric switch valve V1 is controlled to open a large amount of water, the V2 is closed, and the circulating pump M1 or M2 is kept as the original state.
Further, the tertiary response comprises:
any two of the liquid level switches LW 4-LW 6 output low alarms, and at the moment, the liquid level of the water mixing tank is displayed to be low;
both the circulating pumps M1 and M2 have faults, and the alarm that the circulating pumps stop all is displayed at the moment;
the measured real-time medium temperature T1 in the pipeline exceeds a preset value X4, the preset alarm time is maintained, and the water temperature of the system is displayed to be high at the moment;
the processing scheme of the third-level response comprises the following steps:
controlling the electric switch valve V1 to open a large amount of water, controlling the electric switch valve V2 to open water drainage, and controlling the circulating pump M1 or M2 to stop running.
Further, the method for judging the response level in the water-cooling circulation system comprises the following steps:
setting various preset values and threshold values;
reading the data of the device: circulating water flow, real-time medium pressure measured in the pipeline, real-time medium temperature measured in the pipeline, running signals of a motor and low liquid level signals of a liquid level switch;
judging the response level of the water-cooling circulation system according to the data in the execution process of the control method;
when the response level is triggered, judging whether a higher level appears, if not, processing according to the current response level, otherwise, processing according to the higher response level;
executing the processing scheme of the response level for processing;
and judging whether the processing scheme is finished or not, if so, acquiring the data again to judge the response level, and otherwise, continuously executing the processing scheme.
In a second aspect, the present invention further provides a control system using the control method for protecting equipment in a water-cooling circulation system, including:
the building module is used for building multi-stage responses in the water-cooling circulation system and building a processing scheme of each stage of responses; and
and the judging module is used for judging the response level in the water-cooling circulation system and executing a response processing scheme.
In a third aspect, the present invention further provides a device adopting the control method for the protection device in the water cooling circulation system, including:
the device comprises an electric switch valve, a circulating pump and a control module;
the control module is suitable for controlling the opening and closing of the electric switch valve;
the control module is suitable for controlling the starting and stopping of the circulating pump.
The invention has the advantages that the invention constructs multi-stage response in the water cooling circulation system and constructs a processing scheme of each stage of response; and judging the response level in the water-cooling circulation system and executing a response processing scheme, thereby realizing real-time automatic monitoring of field operation data or operation and solving the problem that the equipment is damaged due to the fact that important information is neglected by visual fatigue easily in manual monitoring.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of 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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a control method of a protection apparatus in a water cooling cycle system according to the present invention;
FIG. 2 is a detailed flowchart of a method for controlling a protection device in a water cooling circulation system according to the present invention;
fig. 3 is a schematic diagram of an apparatus according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to fig. 3, embodiment 1 provides a method for controlling a protection device in a water-cooling circulation system, including: constructing multi-stage responses in a water-cooling circulation system, and constructing a processing scheme of each stage of responses; the response level in the water-cooling circulation system is judged, and a response processing scheme is executed, so that the field operation data or operation is automatically monitored in real time, and the problem that the equipment is damaged due to the fact that important information is neglected due to visual fatigue easily in manual monitoring is solved; the control method has the advantages of convenience in control, low implementation cost, high safety and reliability, easiness in finding a fault source and the like.
In this embodiment, the damaged equipment is mainly caused by water shortage, overhigh water temperature and the like, so that the equipment protection of the body is subjected to emergency response in three grades, the grading principle is also formulated according to the damage degree of the water shortage and high temperature to the equipment, the first grade has the lowest priority, and the third grade has the highest priority. The control method monitors the data in real time, stops low-level processing measures and starts execution of a high-level processing scheme when any higher level responds to a trigger. The triggered grade response is holding type information, the triggering time and the triggering reason can be stored, and the normal state can be recovered only by manually confirming the reset, so that the trigger time stored by the inquiry system can be used for judging which grade response is the first to come out.
In this embodiment, the method for constructing a multi-stage response in a water-cooling circulation system and constructing a processing scheme of the multi-stage response includes: and constructing three levels of responses including a first level response, a second level response and a third level response, and setting a processing scheme of the corresponding level response.
In this embodiment, the first-stage response may be two cases including: when any one or more alarm positions in TW 1-TWn exist, namely the temperature switches at the water outlets of one or more fire grate sheets output overtemperature alarm signals, firstly, a man-machine interface alarms, the alarm content corresponds to the overtemperature of the water outlet of the fire grate sheet An (which alarm displays the number of which alarm), if the alarm is TW1, the alarm corresponds to the A1 fire grate and the like; TWn is a mechanical temperature switch for water temperature at an outlet of the nth fire grate segment; an is the nth fire grate segment.
In this embodiment, the first-stage response further includes: the change of the circulating water flow or the measured real-time medium pressure in the pipeline within preset time (the preset time can be 30 seconds) exceeds a set threshold value to trigger alarm; the rate of change of the circulating water flow FT1 exceeds X1 every 30 seconds (X1 is a positive number and can be set on a human-computer interface);
∆FT=|FTn+t- FTn|；
wherein, the Δ FT is the circulating water flow change value; FTnThe circulating water flow at the moment n; FTn+tThe flow rate of the circulating water after the preset time t;
the change rate of the real-time medium pressure P1 measured in the pipeline exceeds X2 per 30 seconds (X2 is a positive number and can be set on a human-computer interface);
∆P=|Pn+t-Pn|；
wherein, the Δ P is the real-time medium pressure change value measured in the pipeline; pnMeasuring real-time medium pressure in the pipeline at the time n; pn+tMeasuring the real-time medium pressure in the pipeline after the preset time t;
∆FT>X1|∆P>X2；
wherein, | is or; x1 is a circulating water flow change threshold; x2 is a real-time medium pressure change threshold value measured in the pipeline; when the change of the circulating water flow or the measured real-time medium pressure in the pipeline exceeds a set threshold within 30 seconds, the human-computer interface alarms and displays that the pipeline is abnormal; in general, the flow and the pressure are stable, and the problem is definitely caused when the flow and the pressure change too fast, so that an alarm is needed to remind an operator to go to a field for inspection, and the calculation is continuously carried out and is not restricted by any condition.
In particular, if FTn=220m3/h,Pn=60KPa,X1=10,X2=5, FTn+30=200m3/h,Pn+30=63KPa，FTn+60=203m3/h,Pn+60Δ 61KPa, then FT = | FTn+30- FTn|=|200-220|=20，∆P=|Pn+30-PnIf |63-60| =3, then Δ FT>X1|∆P>The former of X2 satisfies the condition, triggering a primary response. Δ FT = | FTn+60- FT n+30|=|203-200|=3，∆P=|Pn+60- P n+30And | = |61-63| =2, the second time does not exceed the standard, and the like, and the calculation is carried out once every 30 seconds.
In this embodiment, the processing scheme of the first-stage response includes: control circulating pump M1 or M2 (which operation controls which) according to preset frequency X3Hz speed-up to preset maximum frequency 50Hz (X3 is positive number, can set up at man-machine interface), and close electric switch valve V1 and V2, the purpose is that increase pump body circulation volume can accelerate the heat dissipation in the system, avoid the heat accumulation to cause equipment to damage.
In this embodiment, the second-stage response includes: any two of the liquid level switches LW 1-LW 3 are provided with low liquid level alarms, 2 of the 3 liquid level switches are provided with low liquid level alarms, the situation that the liquid level is actually lower than the position of the sensor but not false alarms is shown, and at the moment, a man-machine interface alarms to display that the liquid level of the chute is low to remind operators of paying attention; the processing scheme of the second-stage response comprises the following steps: the electric switch valve V1 is controlled to open a large amount of water replenishing, the V2 is closed, the circulating pump M1 or M2 is maintained as the original state, water replenishing is carried out as soon as possible, equipment damage caused by lack of water is prevented, and the pressure of water inflow is consistent with the pressure of water in the pipeline during normal operation, so that the water cannot be replenished under the condition that the water is fully replenished, and people do not need to worry about the fact that the pipeline is burst due to too much water replenishing.
In this embodiment, the third-stage response may be three cases including: any two of the liquid level switches LW 4-LW 6 output low alarms, which indicate that the liquid level is actually lower than the position of the sensor, and then the human-computer interface alarms to display that the liquid level of the water mixing tank is low, so as to remind operators of paying attention; when the two circulation pumps fail to start, an alarm is triggered (namely, the two circulation pumps do not have operation signals to a control system), and then a human-computer interface alarm displays that all the water pumps stop alarming to remind operators to pay attention; the measured real-time medium temperature T1 in the pipeline exceeds a preset value X4 (X4 is a positive number and can be set on a human-computer interface), and the preset alarm time is maintained, so that the water temperature of the system is displayed to be high; triggering an alarm if X4 has been exceeded for 10 seconds; the value of X4 is far higher than the set value of a temperature switch TW, and when T1 exceeds X4 in 10 seconds, the water temperature of the whole system is extremely serious, and the temperature must be quickly reduced by a method; at the moment, the water temperature of the human-computer interface alarm display system is high, and operating personnel are reminded of paying attention; this calculation is continuous and is not subject to any conditional constraints; the processing scheme of the third-level response comprises the following steps: the electric switch valve V1 is controlled to open a large amount of water supplement, the electric switch valve V2 is controlled to open water drainage, the circulating pump M1 or M2 is controlled to stop running, the original high-temperature water is replaced by normal-temperature supplement water quickly to cool the system, and meanwhile, the supplement water-drain mode is used to enable demineralized water to flow through key equipment, so that the equipment is prevented from being burnt out.
In this embodiment, the method for determining the response level in the water-cooling circulation system includes: setting various preset values and threshold values; reading the data of the device: circulating water flow, real-time medium pressure measured in the pipeline, real-time medium temperature measured in the pipeline, running signals of a motor and low liquid level signals of a liquid level switch; judging the response level of the water-cooling circulation system according to the data in the execution process of the control method; when the response level is triggered, judging whether a higher level appears, if not, processing according to the current response level, otherwise, processing according to the higher response level; executing the processing scheme of the response level for processing;
judging whether the processing scheme is finished or not, if so, acquiring data again to judge the response level, and otherwise, continuing to execute the processing scheme;
specifically, arrows in the figure indicate the flow direction, and jump conditions are indicated when judgment is made in the flow; firstly, setting parameters X1-X4; and (3) running a calculation process of FT1 and P1 change rates and T1 temperature exceeding after a human-computer interface click start algorithm, and delaying for 30 seconds. The algorithm in the control method is delayed to start reading the state of the field device once and inquiring the calculation result of data once, the calculation result of inquiring the data means that the FT1 and P1 change rates, T1 temperature exceeding and other calculations are continuously carried out, once the alarm is triggered, the control system stores the alarm information, and the algorithm is carried out in the link, and whether the trigger grade responds is known after the stored alarm information is checked. Reading the field device state once refers to that an algorithm directly reads feedback state signals (such as running signals of a motor, low liquid level signals of a liquid level switch and the like) of relevant devices, and the situation that whether a problem exists can be judged through the state without calculation. And then checking whether the algorithm is allowed to continue to run, sometimes personnel may need to temporarily terminate the algorithm of the protection device, and only needs to click a stop algorithm on a human-computer interface, so that when the algorithm program detects a stop signal at the step, the functions of executing and calculating the algorithm and the like are automatically terminated, and relevant data are emptied. If the operation is allowed, the next step is executed, and then whether the grade response is triggered or not is judged, wherein the judgment is based on the field instrument state and the operation result of the query data. And judging whether grade response occurs according to the condition of grade triggering, and returning to restart data reading if no grade response is triggered. Once any response level is triggered, whether a higher level appears is judged firstly (if the previous level has an old level response), if not, the current level is processed, the level information is stored and the human-computer interface is alarmed (if the stored data does not need to be stored), then a corresponding processing scheme is executed, because the scheme is not executed once, a plurality of cycles are needed for execution, whether the scheme is executed is judged secondly, and if the scheme is executed completely (for example, the frequency of a circulating pump in the first level processing scheme is maximized, the processing scheme is judged to be executed completely), the algorithm operation is returned and restarted. If the operation is not finished, the operation is continued according to a preset processing scheme (for example, if the frequency of the circulating pump in the first-level processing scheme is increased to 80%, the speed is continuously increased according to X3Hz every second), whether the corresponding equipment to be controlled is normal is checked, if the equipment has a fault, the human-computer interface displays that the equipment has an equipment fault alarm, the operation is directly returned to start the algorithm again, and the operation which needs to be executed is not executed any more. It should be noted that: the equipment failure generally refers to the monitoring body of the equipment, if the abnormality occurs, the failure information is sent to the control system in real time, the algorithm knows the equipment failure when the step is executed, and when the equipment is repaired and the failure alarm is reset manually, the algorithm knows that the equipment is recovered to be normal when the step is polled next time. And next, if the equipment does not have a fault, the equipment is checked to judge whether the equipment allows remote control, if the equipment does not allow remote control, the human-computer interface displays that the equipment cannot remotely control and returns to restart the arithmetic operation, and the action which is executed is not executed. The remote control of the equipment generally means that the control source of the equipment is in the local, the equipment sends a local signal to a control system, the algorithm knows that the equipment cannot be remotely controlled when the step is executed, and when the equipment is switched into a remote control mode and the remote control alarm is manually reset, the algorithm knows that the equipment is recovered to be normal when the step is executed next time, and the equipment can be subsequently controlled. If these several links have passed, then instructions are output to the field device as planned, and after this step is performed, the process returns to the beginning. Then starting a new process; if a new response level is present and a higher response level is present, stopping the original low-level scheme, switching to the execution of the processing scheme corresponding to the latest level, possibly not executing the low-level processing scheme executed last time, emptying and not executing the low-level processing scheme, maintaining the last state of the related equipment (for example, the frequency of the circulating pump of the last time is increased to 80% and not increased last time, and the frequency is maintained to be operated all the time), if the new high-level response scheme is executed, inquiring whether the scheme is executed or not in the next step, whether the equipment is in fault, and the like, and repeating the process; the algorithm in the whole control method is executed in a reciprocating mode, the execution time is dozens of milliseconds, and no link delay waiting time exists in the middle, so that the algorithm is ensured to monitor the whole circulation system quickly, effectively, safely and reliably. For example, if higher-level response occurs, corresponding measures are immediately taken, if equipment fails or remote control cannot be performed, the algorithm performs infinite polling until the equipment is repaired or remote control is allowed, and if the algorithm receives the feedback, the equipment is immediately controlled to act, the whole algorithm does not need to be initialized or switched to manual control, and meanwhile, great flexibility and more intelligence are achieved; the method has the advantages that the field operation data or operation is automatically monitored in real time, the problem that the equipment is damaged due to the fact that important information is neglected by visual fatigue easily in manual monitoring is solved, and the problems of low production efficiency and high operation cost are solved by adopting a control algorithm. Through automatic modification, the workload and the working strength of personnel are reduced, the working efficiency is improved, the labor cost is reduced, and the equipment maintenance cost is reduced; the one-key start-stop algorithm is operated, so that the operation is convenient; the implementation cost is low, only a small number of instrument valves participate in control, the main implementation work is program writing, and basically no cost exists; the safety and reliability are high, the triggering alarm reliability is guaranteed by adopting the currently universal two-out-of-three algorithm, the equipment loss caused by the fact that the processing measures do not correspond is prevented by adopting the highest response priority mechanism, the equipment state is inquired firstly when the algorithm is specifically executed, and personal accidents caused by field misoperation are prevented; the control algorithm adopts the hold information to record the reason and time of triggering the level response, so that the root tracing and the source analysis are facilitated; the control algorithm has the advantages of modular structure, simple logic, clear thought and convenience for adding other functions in the control algorithm if necessary. The maintenance and modification of engineers are facilitated; the control algorithm has strong flexibility and intelligence on equipment control, and the whole algorithm can not be stopped or restarted due to certain equipment failure and the like, so that the running efficiency of the system is not influenced.
In this embodiment, the structure of the equipment related to the control method may be as shown in fig. 3, the whole equipment is controlled based on a certain control system platform (PLC, DCS, etc.), and since the equipment is closed, the pipelines at various positions are filled with liquid and have higher pressure; the elevation of each apparatus is shown in fig. 3 (the circulation pump is used as a reference elevation), and the elevation is higher as going up. The device shapes shown in the figures are schematic and do not represent actual shapes and sizes. The equipment and the circulation pipeline are connected to form a whole circulation system, and the arrows in the figure indicate the liquid flow direction (one-way flow).
In the figure, A1 … An is a plurality of fire grate segments which are supplied with water in parallel by a main pipe, each fire grate segment is a branch pipe, cooling water flows through each branch pipe to take away heat, and finally the cooling water is gathered to another main pipe. The integral furnace grate area is U-shaped and can temporarily store a certain amount of water. The grate segments are the support for the material to be incinerated and the combustion process takes place on their surface, so that over-temperature can damage the grate segments.
The chute is used for heat dissipation and windrow effect, still big water storage box simultaneously, and the box can be burnt out to lack water for a long time, and lack water can be at the inside steam that produces of box in addition, and steam gets back to the fire grate piece and forms the stifled cold and hot uneven damage that leads to the fact of gas that makes the fire grate piece, and the too big chute that can explode of steam pressure that accumulates when the most serious. The water mixing tank is used for slow flow and mixing, and has smaller volume relative to the chute water mixing tank. The temperature of the demineralized water in the box body is too high, and the sealing piece of the box body can be damaged to cause water leakage. M1 and M2 are circulating pumps (centrifugal pumps) which are used and prepared, and are dragged by variable frequency motors (one motor corresponds to one water pump), and the motors are connected to a control system and can be remotely controlled. M1 and M2 are mutually standby, one is stopped when a fault occurs, the other is automatically started immediately, and the water pump can be damaged under the conditions of long-time water shortage, pipeline blockage or overhigh water temperature. The check valve has the function of preventing backflow, and the valve body can be damaged due to overhigh water temperature. V1, V2 are electronic switch valves, and V1 is opened and can be replenished, and V2 is opened and can be drained, can guarantee business turn over water balance when both valves are opened. The two devices can be remotely controlled by an access control system, and the valve body can be damaged if the water temperature in the pipeline is too high. FT1 is a real-time loop flow, this data is connected to the control system, and too high a water temperature may damage the meter. P1 is the real-time medium pressure measured in the pipeline, the data is connected to the control system, and the instrument can be damaged due to the overhigh water temperature. T1 is the real-time medium temperature measured in the pipeline, the data is connected to the control system, and the instrument can be damaged due to the overhigh water temperature. TW1~ TWn are the mechanical temperature switch of each grate segment export temperature (a grate segment corresponds to a temperature switch), when the temperature surpassed a temperature switch and establishes the warning threshold value, just output an overtemperature alarm signal to control system (switching value signal). The instrument body has a filtering function, occasional interference cannot trigger alarm, and when the temperature is lower than the temperature switch, a reset threshold value is arranged in the temperature switch, and then an overtemperature alarm signal is automatically reset. High temperatures due to water starvation can damage their sensors. LW1~ LW6 are the liquid level switch that installs in each position, and when the liquid level is less than the sensor position of certain switch, this liquid level switch then outputs a low liquid level alarm signal to control system (switching value signal). The LW1~ LW3 sensor position is slightly higher than the grate delivery port, this aspect of evenly distributed. The LW 4-LW 6 sensors are positioned at the lower layer in the water mixing tank, and are uniformly distributed at the layer, namely the distribution condition of three liquid level switches is shown, so that the water mixing tank is depicted in a cuboid shape. The instrument body has a filtering function, the fluctuation of the liquid level can not trigger the alarm, and when the liquid level is higher than the reset threshold value arranged in the liquid level switch, the alarm signal of the low liquid level can be automatically reset. The water temperature may be too high for a long time and may deteriorate the sealing member. The heat exchanger is used for heat dissipation. However, if the water temperature is too high for a long time, the seal may be deteriorated to cause water leakage or clogging.
Example 2
On the basis of embodiment 1, this embodiment 2 further provides a control system adopting the control method for the protection device in the water cooling circulation system in embodiment 1, including: the building module is used for building multi-stage responses in the water-cooling circulation system and building a processing scheme of each stage of responses; and the judging module is used for judging the response level in the water-cooling circulation system and executing a response processing scheme.
In this embodiment, specific functions of each module have been described in detail in embodiment 1, and are not described in detail in this embodiment.
Example 3
On the basis of embodiment 1, this embodiment 2 further provides an apparatus adopting the method for controlling the protection apparatus in the water cooling circulation system in embodiment 1, including: the device comprises an electric switch valve, a circulating pump and a control module; the control module is suitable for controlling the opening and closing of the electric switch valve; the control module is suitable for controlling the starting and stopping of the circulating pump.
In this embodiment, the control module may control the electric switch valve and the circulation pump by using the control method of the protection device in the water cooling circulation system in embodiment 1.
In this embodiment, the specific structure of the device has been described in detail in embodiment 1 and is not described again in this embodiment.
In summary, the invention constructs multi-stage responses in the water-cooling circulation system and constructs processing schemes of the responses at all stages; and judging the response level in the water-cooling circulation system and executing a response processing scheme, thereby realizing real-time automatic monitoring of field operation data or operation and solving the problem that the equipment is damaged due to the fact that important information is neglected by visual fatigue easily in manual monitoring.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A control method for protecting equipment in a water-cooling circulation system is characterized by comprising the following steps:
constructing multi-stage responses in a water-cooling circulation system, and constructing a processing scheme of each stage of responses; and
judging the response level in the water-cooling circulation system and executing a response processing scheme;
the method for constructing the multi-stage response in the water-cooling circulation system and constructing the processing scheme of the multi-stage response comprises the following steps:
constructing three levels of responses including a first level response, a second level response and a third level response, and setting a processing scheme of the corresponding level response;
the first stage response comprises:
when any one or more places of TW 1-TWn give An alarm, the alarm content is that the outlet water of the corresponding fire grate sheet An exceeds the temperature;
TWn is a mechanical temperature switch for water temperature at an outlet of the nth fire grate segment; an is the nth fire grate segment.
2. The method for controlling a protective device in a water cooling cycle system as set forth in claim 1,
the first stage response further comprises:
the change of the circulating water flow or the measured real-time medium pressure in the pipeline within the preset time exceeds a set threshold value to trigger alarm;
∆FT=|FTn+t- FTn|；
wherein, the Δ FT is the circulating water flow change value; FTnThe circulating water flow at the moment n; FTn+tThe flow rate of the circulating water after the preset time t;
∆P=|Pn+t-Pn|；
wherein, the Δ P is the real-time medium pressure change value measured in the pipeline; pnMeasuring real-time medium pressure in the pipeline at the time n; pn+tMeasuring the real-time medium pressure in the pipeline after the preset time t;
∆FT>X1|∆P>X2；
wherein, | is or; x1 is a circulating water flow change threshold; x2 is the threshold for real-time medium pressure change measured in the pipeline.
3. The method for controlling a protective device in a water cooling cycle system as set forth in claim 2,
the processing scheme of the first-stage response comprises the following steps:
and controlling the circulating pump M1 or M2 to accelerate to a preset maximum frequency according to a preset frequency, and closing the electric switch valves V1 and V2.
4. The method for controlling a protective device in a water cooling cycle system as set forth in claim 3,
the second level of response comprises:
any two of the liquid level switches LW 1-LW 3 have low liquid level alarm, and at the moment, the liquid level of the chute is displayed to be low;
the processing scheme of the second-stage response comprises the following steps:
the electric switch valve V1 is controlled to open a large amount of water, the V2 is closed, and the circulating pump M1 or M2 is kept as the original state.
5. The method for controlling a protective device in a water cooling cycle system as set forth in claim 4,
the tertiary response comprises:
any two of the liquid level switches LW 4-LW 6 output low alarms, and at the moment, the liquid level of the water mixing tank is displayed to be low;
both the circulating pumps M1 and M2 have faults, and the alarm that the circulating pumps stop all is displayed at the moment;
the measured real-time medium temperature T1 in the pipeline exceeds a preset value X4, the preset alarm time is maintained, and the water temperature of the system is displayed to be high at the moment;
the processing scheme of the third-level response comprises the following steps:
controlling the electric switch valve V1 to open a large amount of water, controlling the electric switch valve V2 to open water drainage, and controlling the circulating pump M1 or M2 to stop running.
6. The method for controlling a protective device in a water-cooling circulation system according to claim 5,
the method for judging the response level in the water-cooling circulation system comprises the following steps:
setting various preset values and threshold values;
reading the data of the device: circulating water flow, real-time medium pressure measured in the pipeline, real-time medium temperature measured in the pipeline, running signals of a motor and low liquid level signals of a liquid level switch;
judging the response level of the water-cooling circulation system according to the data in the execution process of the control method;
when the response level is triggered, judging whether a higher level appears, if not, processing according to the current response level, otherwise, processing according to the higher response level;
executing the processing scheme of the response level for processing;
and judging whether the processing scheme is finished or not, if so, acquiring the data again to judge the response level, and otherwise, continuously executing the processing scheme.
7. A control system using a control method of a protection apparatus in a water cooling circulation system according to any one of claims 1 to 6, comprising:
the building module is used for building multi-stage responses in the water-cooling circulation system and building a processing scheme of each stage of responses; and
and the judging module is used for judging the response level in the water-cooling circulation system and executing a response processing scheme.
8. An apparatus for controlling a protection apparatus in a water cooling cycle system according to any one of claims 1 to 6, comprising:
the device comprises an electric switch valve, a circulating pump and a control module;
the control module is suitable for controlling the opening and closing of the electric switch valve;
the control module is suitable for controlling the starting and stopping of the circulating pump.
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