CN111022730B - System, method and storage medium for treating crystallization blockage of regulating valve - Google Patents
System, method and storage medium for treating crystallization blockage of regulating valve Download PDFInfo
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- CN111022730B CN111022730B CN201911350649.5A CN201911350649A CN111022730B CN 111022730 B CN111022730 B CN 111022730B CN 201911350649 A CN201911350649 A CN 201911350649A CN 111022730 B CN111022730 B CN 111022730B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
Abstract
The invention discloses a system, a method and a storage medium for processing crystal blockage of a regulating valve, wherein the system comprises a control module, a control module and a control module, wherein the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period; the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal, controlling the valve to be closed when the valve closing trigger signal is received, and adjusting the opening of the valve again according to the current valve opening signal after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal is received; the control module is connected with the valve controller. The invention adopts the automatic control system to carry out crystal processing operation, reduces the danger of manual operation, ensures the stability and the continuity of the vaporization production process, and can be widely applied to the field of liquid ammonia vaporization.
Description
Technical Field
The invention relates to the technical field of liquid ammonia vaporization, in particular to a system and a method for treating crystallization blockage of a regulating valve and a storage medium.
Background
The denitration process adopting the liquid ammonia denitration technology needs a decompression vaporization process from liquid ammonia to ammonia, which is generally realized by adjusting a valve, so that a liquid ammonia adjusting valve needs to be installed in the technological process, the liquid ammonia adjusting valve easily generates crystal bodies in the inner area of the valve due to pressure change caused by pressure reduction of the adjusting valve in the using process, the crystal bodies are slowly expanded due to a honeycomb effect, the control characteristic and the control flow of the valve are influenced, and the control and the operation of the system are influenced.
Disclosure of Invention
To solve at least one of the above technical problems, it is an object of the present invention to provide a system, method and storage medium for treating crystallization blockage of a regulating valve.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a system for treating a regulator valve crystal blockage, comprising:
the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period;
the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal, controlling the valve to be closed when the valve closing trigger signal is received, and adjusting the opening of the valve again according to the current valve opening signal after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal is received;
the control module is connected with the valve controller.
Further, the control module includes:
the periodic signal generator is used for outputting a valve closing trigger signal according to a set period;
the adjusting module is used for outputting a valve opening signal;
the signal holding module is used for locking and holding the valve opening signal;
and the valve controller is respectively connected with the periodic signal generator, the adjusting module and the signal holding module.
Further, the periodic signal generator includes:
a pulse signal generator for outputting a first pulse signal according to a set period;
the pulse counter is used for counting the first pulse signals and outputting second pulse signals;
the time delay device is used for outputting a valve closing trigger signal according to the second pulse signal;
and a feedback loop is arranged between the delayer and the pulse counter, and the pulse counter receives the valve closing trigger signal through the feedback loop and resets when receiving the valve closing trigger signal.
Further, the adjustment module includes:
the pressure sensor is used for outputting a pressure value signal;
the deviation calculator is used for outputting a deviation signal according to the pressure value signal and the given value signal;
and the regulator is used for outputting a valve opening signal according to the deviation signal.
Furthermore, a filtering module is connected between the pressure sensor and the deviation arithmetic unit.
Further, valve controller still is connected with manual control module, manual control module includes:
the manual signal submodule is used for receiving input data and outputting a manual control signal to the valve controller according to the input data;
and the manual mode judgment submodule is used for controlling the valve controller to output a manual control signal or a valve opening signal according to the pressure value signal output by the pressure sensor.
Further, the manual mode determination submodule includes:
the limit judging unit is used for outputting a limit judging signal according to the pressure value signal and the preset upper limit value and the preset lower limit value of the pressure value signal;
a quality determination unit for outputting a quality determination signal according to the pressure value signal and the quality limit of the pressure value signal;
and the OR gate is used for carrying out OR operation on the limit judgment signal and the quality judgment signal so as to control the valve controller to output a manual control signal or a valve opening signal.
The other technical scheme adopted by the invention for solving the technical problem is as follows:
a system for treating a regulator valve crystal blockage, comprising:
a valve;
the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period;
the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal, controlling the valve to be closed when the valve closing trigger signal is received, and adjusting the opening of the valve again according to the current valve opening signal after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal is received;
a buffer device is arranged at the rear part of the valve;
the control module is connected with the valve controller.
The other technical scheme adopted by the invention for solving the technical problem is as follows:
a method of treating a regulator valve crystal blockage comprising the steps of:
generating a valve closing trigger signal according to a set period to enable a valve controller to control the valve to be closed;
and after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal, the valve controller regulates the opening of the valve again according to the current valve opening signal.
The other technical scheme adopted by the invention for solving the technical problem is as follows:
a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of a method of managing crystal blockage of a regulating valve.
The invention has the beneficial effects that: an automatic control system is adopted for operation, manual crystal cleaning is not needed, and the danger of manual operation is reduced; the stability and the continuity of the production process are ensured.
Drawings
FIG. 1 is a schematic view of a valve structure according to an embodiment of the present invention;
FIG. 2 is a block diagram of a system for treating crystallization blockage of a regulator valve according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of one embodiment of a system for treating crystallization blockage in a regulator valve according to the present invention;
FIG. 4 is a block diagram of a periodic signal generator according to an embodiment of the present invention;
FIG. 5 is a block diagram of a system for treating crystallization blockage of a regulator valve according to one embodiment of the present invention;
FIG. 6 is a flow chart of a method of treating a crystal blockage of a regulator valve according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
Fig. 1 shows a structure of a valve, which includes a valve stem 101, a valve core 102 and a valve seat 103, during the process of pressure reduction and vaporization, when the load or the external requirement is stable, the valve is stable at a small fluctuation of an opening degree, after a long time, the valve can crystallize at the valve seat or the valve core, and a honeycomb effect can be slowly formed, which affects the flow area and the valve regulation characteristic. The invention periodically sends out a valve quick full-closing signal with adjustable duration by arranging a periodic signal generator outside the valve controller, and crushes and destroys crystal formation in the valve by the quick movement of the valve. In the present invention, the valve can be extended to a component which is easy to scale and crystallize.
The decompression vaporization process, use liquid ammonia to explain here, liquid ammonia becomes the ammonia process and needs the decompression, can absorb heat on every side after the pressure reduces, can then cause the ambient temperature to descend because the heat reduces on every side, and the temperature has satisfied the crystallization condition of liquid ammonia after the decline, so the crystal will slowly produce, and the crystal that slowly increases scales gradually, has formed the honeycomb effect more and more, and crystallization, scale deposit more and more easily, at last behind bigger and bigger, the effective through flow area that has reduced the valve forms the jam.
Liquid ammonia crystal formation requires a process to form, so if the crystals can be destroyed before the crystals are formed or before the crystals are formed badly, on-line cleaning of the crystals can be achieved. Therefore, if the outlet pipeline is not long enough or large enough, a buffer device is needed to be arranged, the pressure of the outlet cannot be reduced or reduced a lot due to the gas storage capacity of the buffer device during the closing period of the valve, then a device or a control program is arranged outside a valve controller, the control program is to periodically send out a valve closing trigger signal with adjustable duration, and simultaneously lock and keep the valve opening signal before closing, the valve can be quickly and completely closed, so that the crystal formation in the valve body can be crushed and destroyed through the quick movement of the valve, as long as the quick and completely closed period is set reasonably, the crystal in the valve can not form the honeycomb effect, once the valve completely closed signal disappears, the instruction of adjusting the valve is quickly restored to the opening before quick closing, the continuity of the valve process is ensured, as for the outlet end, the process pressure can not be changed greatly, thus not only stabilizing and maintaining the continuity of the production process, but also eliminating the problem of crystallization in the valve.
Referring to fig. 2, the present embodiment discloses a system for treating crystallization blockage of a regulating valve, comprising:
the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period;
the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal, controlling the valve to be closed when the valve closing trigger signal is received, and adjusting the opening of the valve again according to the current valve opening signal after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal is received;
the control module is connected with the valve controller.
And the control module can be realized through hardware connection or software processing. For example, the control module is implemented by connecting a periodic signal generator, a regulation module and a signal holding module, or the control module is implemented by one processor.
The valve controller, which is a device for controlling the opening degree of the valve and is capable of controlling and adjusting the opening degree of the valve according to the opening degree indicated by the input signal, may be implemented by hardware or software processing.
The valve opening signal is a signal for controlling the valve to be opened to a certain opening degree, and can be a voltage signal or an instruction signal with percentage information, and the signal is determined according to the type of the valve.
The valve full-close signal corresponding to the valve opening signal can be a voltage signal or a command signal with percentage information, and the specific value is determined according to the type of the valve.
The valve closing trigger signal, which is a signal for triggering the valve to close, may be a level signal, or may be a trigger signal in other manners, such as a pulse signal.
A period is set, and if a group of events or phenomena repeatedly occurs in the same order, the time or space interval for completing the group of events or phenomena is referred to as a period. The set period is a period set artificially, for example, if the frequency of a signal is set to 10Hz, the set period of the signal is 0.1 s.
And when receiving a valve closing trigger signal, the valve controller outputs a valve full-closing signal to control the valve to be closed. The valve closing trigger signal can be a level signal, and in this case, after the level signal disappears, the valve controller controls the valve to restore the original opening; the valve closing trigger signal may be a pulse signal or a command signal, and in this case, the valve controller controls the valve to return to the original opening degree within a set time after the occurrence of the pulse signal or the command signal.
Further as a preferred embodiment, the control module comprises:
the periodic signal generator is used for outputting a valve closing trigger signal according to a set period;
the adjusting module is used for outputting a valve opening signal;
the signal holding module is used for locking and holding the valve opening signal;
and the valve controller is respectively connected with the periodic signal generator, the adjusting module and the signal holding module.
The periodic signal generator may be implemented by a pulse signal generator, a pulse counter, and a delay 304.
The regulation module may be implemented by the connection of a pressure sensor, a deviation operator 305 and a regulator 307.
The signal holding module may be implemented by hardware, and referring to fig. 3, the switch 308 implements the signal holding module. When the input port Z of the switch 308 is at a high level, the output port Y is connected to the input port X1; when the input port Z is at a low level, the output port Y is connected to the input port X2. When the TS port input of the regulator 307 is at a low level, it keeps working normally; when the TS port input is high, the output port Y is connected to the input port TR.
After the periodic signal generator generates a high-level signal, the high-level signal is input to the TS port of the regulator 307, so that the output port Y of the regulator 307 is communicated with the input port TR; meanwhile, the Z port of the switch 308 receives a high signal, so that the output port Y of the switch 308 is connected to the input port X1. While the output port Y of the regulator 307 is connected to the input port X1 of the switch 308 and the output port Y of the switch 308 is connected to the input port TR of the regulator 307, thus forming a latch loop that latches the hold valve opening signal when the valve closing trigger signal is generated.
Further as a preferred embodiment, referring to fig. 4, the periodic signal generator includes:
a pulse signal generator for outputting a first pulse signal according to a set period;
the pulse counter is used for counting the first pulse signals and outputting second pulse signals;
the time delay device is used for outputting a valve closing trigger signal according to the second pulse signal;
and a feedback loop is arranged between the delayer and the pulse counter, and the pulse counter receives the valve closing trigger signal through the feedback loop and resets when receiving the valve closing trigger signal.
Specifically, the pulse signal generator may output a pulse signal with a certain pulse width periodically according to a setting, the pulse counter counts the input pulse signal, the count value is set to be variable, if the pulse is one for 1 second and the count value is set to be 3600, the counter sends out a pulse for 1 second when counting to the 3600 th pulse, the pulse counter is set to be zero when the reset signal occurs, and the pulse signal generator and the pulse counter realize a timing function together.
The delayer 304 works in a delayed off state, outputs a high level immediately after receiving the high level, the delayer 304 starts to calculate delay according to delay setting after pulse input is carried out for 1 second, if delay time of the delayer 304 is set to be 30 seconds, the high level signal disappears after 30 seconds, the high level signal serves as a reset signal within 30 seconds, the pulse counter is reset, the reset signal disappears after 31 seconds, the pulse counter starts to count again, and in the resetting process, the pulse generator can be selected to be reset simultaneously, so that the time of each period is ensured to be more accurate.
Further as a preferred embodiment, the adjusting module comprises:
the pressure sensor is used for outputting a pressure value signal;
the deviation calculator is used for outputting a deviation signal according to the pressure value signal and the given value signal;
and the regulator is used for outputting a valve opening signal according to the deviation signal.
The pressure sensor is connected to the rear part of the valve and is used for measuring the pressure value of the output port passing through the regulating valve.
The set value signal, which is a signal for determining the magnitude of the valve output pressure, is output from the valve controller 309. The deviation operator 305 derives a deviation signal by performing a deviation operation on the pressure value signal of the pressure sensor and the set value signal.
The set point signal is output by the SP port of the valve controller 309.
The regulator 307 may be a PID regulator or a PI regulator, and the regulator 307 outputs a valve opening signal according to the deviation signal.
The adjusting module actually plays a role in negative feedback adjustment in the system, and the effect of outputting and tracking the given value is realized through the adjusting module.
In a further preferred embodiment, a filter module is connected between the pressure sensor and the deviation calculator.
The filtering module 301 may be a leader lag module, the leader lag module has a filtering function, and after the feedback measurement value with large fluctuation is processed by the leader lag module, part of the disturbance can be effectively removed, and then the feedback measurement value passes through the regulator 307, so that the system control quality is improved.
As a further preferred embodiment, the valve controller is further connected with a manual control module, and the manual control module includes:
the manual signal submodule is used for receiving input data and outputting a manual control signal to the valve controller according to the input data;
and the manual mode determination submodule is used for controlling the valve controller 309 to output a manual control signal or a valve opening signal according to the pressure value signal output by the pressure sensor.
The manual signal sub-module is a man-machine interaction interface and can be realized through software processing, and the manual control sub-module can realize the switching between manual control and automatic control, the setting of a given value and the direct control of the opening degree of the valve. If the manual signal submodule is selected to be in a manual control mode, the system controls the opening of the valve according to the output of the manual signal submodule; and if the manual signal sub-module is selected to be in an automatic control mode, the system sets according to the given value and outputs a valve opening signal by combining the adjusting module, and the valve opening is automatically adjusted.
The manual signal sub-module further has a signal tracking function, when the system is in an automatic control mode, the manual control output of the system tracks the automatic control output, and disturbance generated by switching from the automatic control mode to the manual control mode is suppressed, specifically, the manual signal sub-module communicates with the valve controller 309 in a wired or wireless mode, for example, RS232 or directly communicates through an address, and obtains the automatic control output from the valve controller 309, so that an effect of tracking the automatic control output is achieved.
The manual mode judgment submodule is used for selecting the manual signal submodule in a manual control mode when the pressure value signal acquired by the pressure sensor has a problem, and preventing the system from responding to the wrong sensor pressure value signal.
Further preferably, the manual mode determination submodule includes:
the limit judging unit is used for outputting a limit judging signal according to the pressure value signal and the preset upper limit value and the preset lower limit value of the pressure value signal;
a quality determination unit for outputting a quality determination signal according to the pressure value signal and the quality limit of the pressure value signal;
and the OR gate is used for carrying out OR operation on the limit judgment signal and the quality judgment signal so as to control the valve controller to output a manual control signal or a valve opening signal.
The limit determination unit 302 determines whether the pressure value signal is within a preset upper and lower limit interval, if so, the output is a low level, otherwise, the output is a high level.
The quality determination unit 303 determines whether the change rate of the pressure value signal is in a preset interval, if so, outputs a low level, otherwise, outputs a high level.
The or gate 306 performs an or operation on the outputs of the limitation determination unit 302, the quality determination unit 303 and the time delay 304, and the result is used as a flag bit for determining whether the system is switched to the manual control mode, so as to prevent the system from generating an error valve opening signal due to an error pressure value signal and affecting the normal control of the system.
Referring to fig. 5, another embodiment of the present invention discloses a system for treating crystallization blockage of a regulating valve, comprising:
a valve;
the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period;
the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal, controlling the valve to be closed when the valve closing trigger signal is received, and adjusting the opening of the valve again according to the current valve opening signal after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal is received;
a buffer device is arranged at the rear part of the valve;
the control module is connected with the valve controller.
The buffer device is a device which is connected to the rear part of the valve and is used for increasing the volume of the output channel, specifically, the buffer device can be a gas storage tank, in the embodiment, the change of the outlet pressure is inevitably influenced and the continuity of the process is influenced due to the fact that the valve needs to be closed, and the gas storage tank is arranged between the valve and the outlet, so that the pressure floating caused in the closing process of the valve can be relieved, and the continuity of the production process is kept.
Referring to fig. 6, another embodiment of the present invention discloses a method for treating crystallization blockage of a regulating valve, comprising the steps of:
s1, generating a valve closing trigger signal according to a set period to enable the valve controller to control the valve to be closed;
and S2, after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal, enabling the valve controller to adjust the opening of the valve again according to the current valve opening signal.
The valve controller controls the valve to be closed, and crystals in the valve body are crushed through the rapid movement of the valve.
Under normal conditions, the system works in an automatic control mode, at the moment, the manual signal sub-module is selected to be in an automatic control mode, the pressure set value is set to be unchanged, when the load is stable, the flow rate also needs to be stable, the valve is stabilized at a certain opening to meet the operation requirement of the system, when the load is increased, the pressure of the main pipe is reduced, the difference value between the given pressure and the pressure of the main pipe is increased, the PID regulation is increased, the valve controller receives the increased signal and then opens the valve, the pressure is increased after a certain opening degree, the demand and supply are balanced, the valve moves in a new position in a small amplitude, the process is repeated, the regulation module can automatically regulate, when the manual control mode is adopted, the manual signal submodule is selected to be in a manual control mode, an operator replaces the adjusting module, and the valve opening is changed by manually adjusting the value of the manual signal submodule according to the pressure condition. It should be noted that, the two conditions are normal conditions, the signal holding module can automatically track, that is, when the system works in an automatic control mode, the manual signal submodule tracks the output of the adjusting module, and when the system works in a manual control mode, the adjusting module tracks the output of the manual signal submodule, so that no disturbance is caused in the manual and automatic switching process. When the periodic signal generator generates a high level signal for a certain time, the control system is in an abnormal working state, the manual signal submodule and the adjusting module cannot automatically track, the output lock of the adjusting module is kept unchanged, the manual signal submodule is selected in a manual control mode, the valve controller outputs a valve full-close signal at the same time, the control valve is quickly closed, when the high level signal disappears, the system is switched to the original automatic control state, the original adjusting module keeps a switching value before the periodic signal appears because of no tracking, namely, the valve is opened to the original opening degree after being quickly closed.
Another embodiment of the invention discloses a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for regulating valve crystal clogging.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (7)
1. A system for treating a crystal plug of a regulator valve, comprising:
the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period;
the manual control module comprises a manual signal submodule and a manual mode judging submodule, and the manual signal submodule is used for receiving input data and outputting a manual control signal to the valve controller according to the input data; the manual mode judgment submodule is used for controlling the valve controller to output a manual control signal or a valve opening signal according to a pressure value signal output by the pressure sensor at the valve;
the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal, controlling the valve to be closed when the valve closing trigger signal is received, and adjusting the opening of the valve again according to the current valve opening signal after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal is received;
the control module is connected with the valve controller, and the manual control module is connected with the valve controller;
wherein the manual mode determination sub-module further comprises:
the limiting and judging unit is used for outputting a limiting and judging signal according to the pressure value signal and the preset upper and lower limit values of the pressure value signal;
a quality determination unit for outputting a quality determination signal according to the pressure value signal and the quality limit of the pressure value signal;
and the OR gate is used for carrying out OR operation on the limit judgment signal and the quality judgment signal so as to control the valve controller to output a manual control signal or a valve opening signal.
2. The system for handling modulation valve crystal plugging of claim 1, wherein the control module comprises:
the periodic signal generator is used for outputting a valve closing trigger signal according to a set period;
the adjusting module is used for outputting a valve opening signal;
the signal holding module is used for locking and holding the valve opening signal;
and the valve controller is respectively connected with the periodic signal generator, the adjusting module and the signal holding module.
3. The system for handling modulation valve crystal plugging of claim 2, wherein the periodic signal generator comprises:
a pulse signal generator for outputting a first pulse signal according to a set period;
the pulse counter is used for counting the first pulse signals and outputting second pulse signals;
the time delay device is used for outputting a valve closing trigger signal according to the second pulse signal;
and a feedback loop is arranged between the delayer and the pulse counter, and the pulse counter receives the valve closing trigger signal through the feedback loop and resets when receiving the valve closing trigger signal.
4. The system for handling modulation valve crystal plugging of claim 2, wherein the modulation module comprises:
the pressure sensor is used for outputting a pressure value signal;
the deviation calculator is used for outputting a deviation signal according to the pressure value signal and the given value signal;
and the regulator is used for outputting a valve opening signal according to the deviation signal.
5. The system for processing crystal blockage of a regulating valve according to claim 4, wherein a filtering module is connected between the pressure sensor and the deviation operator.
6. A system for treating a crystal plug of a regulator valve, comprising:
a valve;
the control module is used for outputting a valve opening signal and outputting a valve closing trigger signal according to a set period;
the manual control module comprises a manual signal submodule and a manual mode judging submodule, and the manual signal submodule is used for receiving input data and outputting a manual control signal to the valve controller according to the input data; the manual mode judgment submodule is used for controlling the valve controller to output a manual control signal or a valve opening signal according to a pressure value signal output by the pressure sensor at the valve;
the valve controller is used for adjusting the valve to the opening represented by the valve opening signal according to the valve opening signal and controlling the valve to be closed when a valve closing trigger signal is received; after the valve closing trigger signal disappears or after the set time of the valve closing trigger signal is received, the opening degree of the valve is adjusted again according to the current valve opening degree signal;
a buffer device is arranged at the rear part of the valve;
the control module is connected with the valve controller, and the manual control module is connected with the valve controller;
wherein the manual mode determination sub-module further comprises:
the limiting and judging unit is used for outputting a limiting and judging signal according to the pressure value signal and the preset upper and lower limit values of the pressure value signal;
a quality determination unit for outputting a quality determination signal according to the pressure value signal and the quality limit of the pressure value signal;
and the OR gate is used for carrying out OR operation on the limit judgment signal and the quality judgment signal so as to control the valve controller to output a manual control signal or a valve opening signal.
7. A method for treating crystal blockage of a regulating valve, which is characterized by applying the system for treating crystal blockage of the regulating valve, as claimed in claim 1 or 6;
the method for treating the crystallization blockage of the regulating valve comprises the following steps:
generating a valve closing trigger signal according to a set period to enable a valve controller to control the valve to be closed;
after the valve closing trigger signal disappears or after the set time of receiving the valve closing trigger signal, the valve controller adjusts the opening of the valve again according to the current valve opening signal;
outputting a limit judgment signal according to the pressure value signal and the preset upper and lower limit values of the pressure value signal;
outputting a quality judgment signal according to the pressure value signal and the quality limit of the pressure value signal;
and performing OR operation on the limit judgment signal and the quality judgment signal so as to control the valve controller to output a manual control signal or a valve opening signal.
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| CN201911350649.5A CN111022730B (en) | 2019-12-24 | 2019-12-24 | System, method and storage medium for treating crystallization blockage of regulating valve |
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| CN201911350649.5A CN111022730B (en) | 2019-12-24 | 2019-12-24 | System, method and storage medium for treating crystallization blockage of regulating valve |
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| CN111022730B true CN111022730B (en) | 2022-02-08 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58158603A (en) * | 1982-03-16 | 1983-09-20 | Sumitomo Electric Ind Ltd | Method and device for manufacturing fiber for infrared light |
| DK173348B1 (en) * | 1996-06-07 | 2000-08-07 | Man B & W Diesel As | Exhaust valve for an internal combustion engine |
| CN201464853U (en) * | 2009-07-16 | 2010-05-12 | 上海海维工业控制有限公司 | Valve intelligent control system |
| US9255512B2 (en) * | 2011-08-22 | 2016-02-09 | Cummins Emission Solutions, Inc. | Urea injection systems wash cycles |
| CN204042013U (en) * | 2014-06-11 | 2014-12-24 | 上海瑞托阀门科技有限公司 | Energy-saving prevention block valve |
| CN204253997U (en) * | 2014-11-28 | 2015-04-08 | 温州大阳科技有限公司 | A kind of automatically cleaning Wastewater by Electric magnet valve |
| CN106051175A (en) * | 2016-06-06 | 2016-10-26 | 陈金环 | Novel photo-thermal power generation fused salt valve capable of avoiding residues |
| CN112283396A (en) * | 2020-10-28 | 2021-01-29 | 福建工程学院 | Liquid valve suitable for electrolyte |
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2019
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