Opening and closing control method of electrically operated valve for fluid shunting regulation

Abstract

The invention relates to the field of valve control, and discloses an electric valve switch control method for fluid shunting regulation, which comprises the following steps of: performing switch feasibility evaluation and fluid shunting safety evaluation on an electric valve to realize the purpose of normal work of the electric valve; and according to the flow direction, the flow rate, the flow velocity and the final flow direction position of the fluid in the flow channel connected with the electric valve, an opening and closing degree regulation and control scheme of the electric valve is generated, and all the schemes are executed through a PID (Proportion Integration Differentiation) controller. According to the invention, the accuracy of fluid control can be improved, the production efficiency and the safety are optimized, the system adapts to various working conditions and media, energy conservation, emission reduction and sustainable development are realized, the automation level is improved, and the shunting adjustment of fluid is realized.

Description

Technical Field

[0001] The invention relates to the field of valve control, and in particular to an electric valve switch control method for fluid diversion regulation. Background Art

[0002] Electric valves, especially electric regulating valves, can precisely control the opening of the valve through electric actuators. This precise control enables the fluid to be distributed according to a predetermined ratio and flow rate during the diversion process, thereby meeting the strict requirements for fluid parameters in industrial production. Compared with manual valves, electric valves can respond to control signals more accurately and ensure the stable operation of fluid control systems. Electric valves are driven by electric motors to achieve remote or automatic control of the valve. Just touch a button or send a control signal to open, close and adjust the valve, which is convenient and efficient to operate. Manual operation requires rotating handles, levers or sprockets to operate the valve. For large, heavy or frequently operated valves, manual operation may be laborious and inefficient. At the same time, by diverting and adjusting the fluid through electric valves, the valve opening can be adjusted in real time according to actual needs, thereby minimizing energy consumption. This energy-saving effect not only helps to reduce production costs, but also reduces the impact on the environment, meeting the requirements of sustainable development. In summary, the flow regulation of fluids through electric valves has many meanings, including improving the accuracy of fluid control, optimizing production efficiency and safety, adapting to various working conditions and media, achieving energy conservation and emission reduction and sustainable development, and improving the level of automation. These advantages make electric valves play an irreplaceable role in industrial production, and their application scenarios are constantly expanding with the advancement of science and technology. Summary of the invention

[0003] The present invention overcomes the shortcomings of the prior art and provides an electric valve switch control method for fluid diversion regulation.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A first aspect of the present invention provides an electric valve switch control method for fluid diversion regulation, comprising the following steps:

[0006] Conduct valve opening and closing feasibility assessment and fluid diversion safety assessment on electric valves, and perform maintenance on electric valves based on the assessment results;

[0007] Construct a fluid flow diagram and perform flow analysis on the fluid. Based on the flow analysis results, generate a qualified electric valve opening and closing degree control plan;

[0008] A PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller.

[0009] Furthermore, in a preferred embodiment of the present invention, the feasibility assessment of valve switching and the safety assessment of fluid diversion are performed on the electric valve, and the electric valve is repaired based on the assessment results, specifically:

[0010] The electric valve for controlling the fluid to be diverted and regulated is calibrated as a target electric valve, and a control circuit for controlling the switch of the target electric valve is obtained in the target electric valve and calibrated as a valve switch circuit;

[0011] Running the valve switch circuit, and determining during the running whether the target electric valve can realize the switch processing, and marking the switch connection of the target electric valve as the switch position of the target electric valve;

[0012] If not, then remove the foreign matter at the switch position of the target electric valve to ensure that there is no foreign matter at the switch position of the target electric valve to affect the switch processing of the target electric valve. If the target electric valve still cannot achieve the switch processing after the foreign matter is removed, the valve switch circuit is calibrated as a valve switch abnormal circuit;

[0013] Use an electrician to test the valve switch circuit for a short circuit fault, determine the position where the current intensity in the valve switch circuit does not remain within a preset threshold, mark it as a short circuit fault position, install a humidity sensor at the short circuit fault position, and determine whether the humidity at the short circuit fault position is greater than a preset value based on the humidity sensor;

[0014] If yes, a big data network is introduced to retrieve and output a method for secondary sealing at the switch position of the target electric valve, so as to ensure that the humidity at the switch position of the target electric valve is less than a preset value;

[0015] If not, then construct a topological circuit of the valve switch circuit, determine the circuit node associated with the short-circuit fault position based on the topological circuit of the valve switch circuit, and determine the faulty component in the valve switch circuit based on the circuit node associated with the short-circuit fault position, and retrieve and output the repair plan of the faulty component through the big data network, so that the target electric valve can realize the switch processing, and obtain the electric valve with qualified switch;

[0016] Conduct a fluid diversion safety assessment on the qualified electric valves for switching, and perform safety inspection and maintenance on the qualified electric valves for switching based on the fluid diversion safety assessment results.

[0017] Furthermore, in a preferred embodiment of the present invention, the fluid diversion safety assessment is performed on the qualified switch electric valve, and the qualified switch electric valve is subjected to safety inspection and maintenance based on the fluid diversion safety assessment result, specifically:

[0018] Obtain the drop, length and maximum fluid flow rate of the fluid flow channel connected to the qualified switch electric valve, and simultaneously obtain the building specifications of the qualified switch electric valve, and determine the area of ​​the force-bearing surface of the qualified switch electric valve based on the building specifications of the qualified switch electric valve;

[0019] Combined with the drop, length and maximum flow rate of the fluid flow channel connected to the qualified switch electric valve, and the area of ​​the force-bearing surface of the qualified switch electric valve, calculate the maximum pressure value of the fluid on the qualified switch electric valve;

[0020] The pressure value in the force-bearing surface of the qualified electric valve is equal to the pressure of the maximum action pressure value, and the displacement length and collapse depth of the qualified electric valve after being subjected to pressure are monitored in real time by the laser ranging method;

[0021] The maximum displacement length and collapse depth are preset. If the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are not greater than the maximum displacement length and collapse depth, the qualified switch electric valve is calibrated as a qualified electric valve;

[0022] If the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are greater than the maximum displacement length or collapse depth, a solution for reinforcing the qualified switch electric valve is retrieved and output through the big data network, so that the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are not greater than the maximum displacement length and collapse depth, and a qualified electric valve is obtained.

[0023] Furthermore, in a preferred embodiment of the present invention, the fluid flow diagram is constructed, and the flow analysis of the fluid is performed, and based on the flow analysis result, a qualified electric valve switch degree control scheme is generated, specifically:

[0024] Determine the direction of the fluid flow channel at the installation position of the qualified electric valve, and determine the flow direction of the fluid based on the direction of the fluid flow channel, which is marked as the fluid flow direction;

[0025] Determine the installation positions of all qualified electric valves, and construct a fluid flow diagram in combination with the corresponding fluid flow directions, and mark the installation positions of the qualified electric valves and the final flow positions of the fluids in the fluid flow diagram;

[0026] Install flow rate measuring instruments at different installation positions of qualified electric valves, and preset flow rate measurement time. During the flow rate measurement time, measure the average flow rate of the fluid when the qualified electric valve is fully opened;

[0027] Preset the target fluid flow time, and combine the average flow rate of the fluid when all qualified electric valves are fully opened to determine the total flow rate of the fluid when all qualified electric valves are fully opened, and at the same time determine the maximum receiving fluid flow rate of the final flow location of the fluid;

[0028] If the total flow rate of the fluid when all qualified electric valves are fully opened is less than the maximum receiving fluid flow rate of the final flow location of the fluid, all qualified electric valves are controlled to be fully opened.

[0029] Furthermore, in a preferred embodiment of the present invention, if the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow location of the fluid, then the opening and closing degree control scheme of the qualified electric valves is generated in combination with the number of positions of the final flow location of the fluid, specifically:

[0030] Based on the fluid flow diagram, determining the corresponding relationship between the qualified electric valve and the final flow position of the fluid, and generating a qualified electric valve-final flow position comparison diagram of the fluid;

[0031] Combined with the area of ​​the force-bearing surface of the qualified electric valve, determine the fluid passing area of ​​the qualified electric valve, and calibrate the fluid passing area when the qualified electric valve is fully opened as the maximum fluid passing area;

[0032] The qualified electric valve is sampled for fluid passage area to obtain 1 / 2 maximum fluid passage area and 1 / 3 maximum fluid passage area, and the total fluid flow of the qualified electric valve with 1 / 2 maximum fluid passage area and the total fluid flow of the qualified electric valve with 1 / 3 maximum fluid passage area are measured respectively in combination with a flow velocity measuring instrument, a flow velocity measuring time and a fluid target flow time, and the integral conversion between the fluid passage area and the total fluid flow is performed to generate a fluid passage area-total fluid flow comparison map within the fluid target flow time, which is calibrated as a target comparison map;

[0033] If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the position number of the final flow position of the fluid is equal to 1, then the maximum receiving fluid flow rate of the final flow position of the fluid is introduced into the target comparison map, and the fluid passing area corresponding to the maximum receiving fluid flow rate of the final flow position of the fluid is generated, which is calibrated as a type of fluid passing area, and a type of qualified electric valve switch degree control scheme is generated;

[0034] The control scheme for the switching degree of the first type of qualified electric valve is to control the switching of the qualified electric valve so that the fluid passing area is equal to the first type of fluid passing area, until the total fluid flow through the qualified electric valve is equal to the maximum receiving fluid flow at the final flow location of the fluid;

[0035] If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the number of the final flow position of the fluid is not equal to 1, then based on the qualified electric valve-fluid final flow position comparison chart, different final flow positions of the fluid are classified and analyzed to generate a second-class qualified electric valve switch degree control plan;

[0036] Among them, the switching degree control scheme of the second type of qualified electric valves is to first determine the qualified electric valve corresponding to the final flow direction of the fluid, and determine the maximum receiving fluid sub-flow rate at the final flow direction of the fluid, import the maximum receiving fluid sub-flow rate at the final flow direction of the fluid into the target comparison map for analysis, determine the passage area of ​​the second type of fluid, and control the switching of the qualified electric valve so that the fluid passage area is equal to the second type of fluid passage area, until the total fluid flow rate through the qualified electric valve corresponding to the final flow direction of the fluid is equal to the maximum receiving fluid sub-flow rate at the final flow direction of the fluid.

[0037] Furthermore, in a preferred embodiment of the present invention, it is characterized in that the PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller, specifically:

[0038] Obtain a PID controller and connect the PID controller to a qualified electric valve through a circuit to build a PID controlled electric valve system;

[0039] Perform a short circuit test on the connection points of the PID control electric valve system by using a multimeter, and reconnect the PID controller and the qualified electric valve if there is a short circuit at the connection point;

[0040] The blank parameters of the proportion, integration and differentiation of the PID control electric valve system are obtained respectively, and the scheme parameters of all qualified electric valve switch degree control schemes are converted. After the scheme parameters are converted, the parameters of the proportion, integration and differentiation are configured, so that the PID control electric valve system can realize the switch control of the qualified electric valve according to the scheme parameters of different qualified electric valve switch degree control schemes, and obtain the configured PID control electric valve system;

[0041] Running the configured PID control electric valve system, and monitoring whether the fluid passing area on the qualified electric valve is equal to the corresponding fluid passing area on the qualified electric valve opening and closing degree control scheme being executed during the running of the configured PID control electric valve system;

[0042] If not, the fluid passage area is automatically fine-tuned in the PID control electric valve system so that the fluid passage area on the qualified electric valve is equal to the fluid passage area corresponding to the qualified electric valve switch degree control scheme being executed;

[0043] After configuring the PID control electric valve system to execute the qualified electric valve switch degree control plan, the qualified electric valve switch degree control plan is saved in the historical database of the configured PID control electric valve system. The PID control electric valve system is configured to monitor the fluid flow at the qualified electric valve, and the output of the plan parameters corresponding to the qualified electric valve switch degree control plan is realized.

[0044] The second aspect of the present invention further provides an electric valve switch control system for fluid diversion regulation, the electric valve switch control system comprising a memory and a processor, the memory storing an electric valve switch control method, and when the electric valve switch control method is executed by the processor, the following steps are implemented:

[0045] Conduct valve opening and closing feasibility assessment and fluid diversion safety assessment on electric valves, and perform maintenance on electric valves based on the assessment results;

[0046] Construct a fluid flow diagram and perform flow analysis on the fluid. Based on the flow analysis results, generate a qualified electric valve opening and closing degree control plan;

[0047] A PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller.

[0048] The present invention solves the technical defects existing in the background technology, and has the following beneficial effects: the feasibility of switching the electric valve and the safety of fluid diversion are evaluated to achieve the purpose of normal operation of the electric valve, and the switching degree control scheme of the electric valve is generated according to the fluid flow direction, flow rate, flow velocity and the position of the final flow direction of the fluid in the flow channel connected to the electric valve, and all schemes are executed by the PID controller. The present invention can improve the accuracy of fluid control, optimize production efficiency and safety, adapt to various working conditions and media, achieve energy conservation and emission reduction and sustainable development, and improve the level of automation, and realize the diversion regulation of the fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0050] Figure 1 A flow chart showing a method for controlling the switch of an electric valve for fluid flow diversion regulation is shown;

[0051] Figure 2A flow chart of a method for generating a switch degree control scheme for a qualified electric valve is shown;

[0052] Figure 3 A program view of an electric valve switch control system for fluid diversion regulation is shown. DETAILED DESCRIPTION

[0053] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0055] Figure 1 The present invention shows a flow chart of an electric valve switch control method for fluid diversion regulation, which includes the following steps:

[0056] Conduct valve opening and closing feasibility assessment and fluid diversion safety assessment on electric valves, and perform maintenance on electric valves based on the assessment results;

[0057] Construct a fluid flow diagram and perform flow analysis on the fluid. Based on the flow analysis results, generate a qualified electric valve opening and closing degree control plan;

[0058] A PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller.

[0059] Furthermore, in a preferred embodiment of the present invention, the feasibility assessment of valve switching and the safety assessment of fluid diversion are performed on the electric valve, and the electric valve is repaired based on the assessment results, specifically:

[0060] The electric valve for controlling the fluid to be diverted and regulated is calibrated as a target electric valve, and a control circuit for controlling the switch of the target electric valve is obtained in the target electric valve and calibrated as a valve switch circuit;

[0061] Running the valve switch circuit, and determining during the running whether the target electric valve can realize the switch processing, and marking the switch connection of the target electric valve as the switch position of the target electric valve;

[0062] If not, then remove the foreign matter at the switch position of the target electric valve to ensure that there is no foreign matter at the switch position of the target electric valve to affect the switch processing of the target electric valve. If the target electric valve still cannot achieve the switch processing after the foreign matter is removed, the valve switch circuit is calibrated as a valve switch abnormal circuit;

[0063] Use an electrician to test the valve switch circuit for a short circuit fault, determine the position where the current intensity in the valve switch circuit does not remain within a preset threshold, mark it as a short circuit fault position, install a humidity sensor at the short circuit fault position, and determine whether the humidity at the short circuit fault position is greater than a preset value based on the humidity sensor;

[0064] If yes, a big data network is introduced to retrieve and output a method for secondary sealing at the switch position of the target electric valve, so as to ensure that the humidity at the switch position of the target electric valve is less than a preset value;

[0065] If not, then construct a topological circuit of the valve switch circuit, determine the circuit node associated with the short-circuit fault position based on the topological circuit of the valve switch circuit, and determine the faulty component in the valve switch circuit based on the circuit node associated with the short-circuit fault position, and retrieve and output the repair plan of the faulty component through the big data network, so that the target electric valve can realize the switch processing, and obtain the electric valve with qualified switch;

[0066] Conduct a fluid diversion safety assessment on the qualified electric valves for switching, and perform safety inspection and maintenance on the qualified electric valves for switching based on the fluid diversion safety assessment results.

[0067] It should be noted that the electric valve is a valve that controls the flow of fluid in the flow channel. When the valve is closed, the fluid is blocked and cannot continue to flow through the valve. Since the electric valve is directly involved in the flow of fluid, the switch control of the electric valve cannot fail, that is, the control circuit of the electric valve must be able to control the valve to switch. Perform control circuit fault analysis on the electric valve. If the electric valve cannot be switched through the control circuit, first determine whether there is a foreign object blocking the closure of the valve at the valve connection, that is, the location where the valve is connected to the wall. If there is, it needs to be removed. If not, it proves that the circuit is faulty and needs to be repaired. Determine whether there is water ingress in the control circuit. Water ingress can easily cause a short circuit in the circuit. The humidity sensor can be used to monitor the humidity to determine whether there is water ingress. If so, secondary sealing is required to prevent water ingress from causing a short circuit, and the short circuit location is monitored for fault repair or replacement. The topological circuit records the short-circuit nodes of the circuit. The same node may be connected to different components, that is, different components may cause a short circuit in the circuit, so a topological circuit is constructed to determine the faulty component. After confirming that the electric valve is switched normally, it is necessary to conduct a safety inspection on the electric valve to ensure that the fluid impact does not cause danger to the electric valve, thereby causing casualties or property losses.

[0068] Furthermore, in a preferred embodiment of the present invention, the fluid diversion safety assessment is performed on the qualified switch electric valve, and the qualified switch electric valve is subjected to safety inspection and maintenance based on the fluid diversion safety assessment result, specifically:

[0069] Obtain the drop, length and maximum fluid flow rate of the fluid flow channel connected to the qualified switch electric valve, and simultaneously obtain the building specifications of the qualified switch electric valve, and determine the area of ​​the force-bearing surface of the qualified switch electric valve based on the building specifications of the qualified switch electric valve;

[0070] Combined with the drop, length and maximum flow rate of the fluid flow channel connected to the qualified switch electric valve, and the area of ​​the force-bearing surface of the qualified switch electric valve, calculate the maximum pressure value of the fluid on the qualified switch electric valve;

[0071] The pressure value in the force-bearing surface of the qualified electric valve is equal to the pressure of the maximum action pressure value, and the displacement length and collapse depth of the qualified electric valve after being subjected to pressure are monitored in real time by the laser ranging method;

[0072] The maximum displacement length and collapse depth are preset. If the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are not greater than the maximum displacement length and collapse depth, the qualified switch electric valve is calibrated as a qualified electric valve;

[0073] If the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are greater than the maximum displacement length or collapse depth, a solution for reinforcing the qualified switch electric valve is retrieved and output through the big data network, so that the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are not greater than the maximum displacement length and collapse depth, and a qualified electric valve is obtained.

[0074] It should be noted that the fluid on the fluid flow path connected to the qualified electric valve for switching will cause impact on the valve due to the drop, length, flow rate, etc. If there is displacement, collapse, etc. on the wall of the valve after the impact, it is easy to cause the valve to collapse or deform over time, bringing serious consequences. Therefore, it is necessary to analyze the displacement length and collapse depth of the qualified electric valve for switching after being subjected to pressure, and determine the relationship between them and the displacement length and collapse depth within the safe range, and generate a reinforcement plan, such as adding a water-blocking plate or thickening the valve, so as to achieve that the displacement length and collapse depth of the qualified electric valve for switching after being subjected to pressure are not greater than the maximum displacement length and collapse depth.

[0075] Furthermore, in a preferred embodiment of the present invention, it is characterized in that the PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller, specifically:

[0076] Obtain a PID controller and connect the PID controller to a qualified electric valve through a circuit to build a PID controlled electric valve system;

[0077] Perform a short circuit test on the connection points of the PID control electric valve system by using a multimeter, and reconnect the PID controller and the qualified electric valve if there is a short circuit at the connection point;

[0078] The blank parameters of the proportion, integration and differentiation of the PID control electric valve system are obtained respectively, and the scheme parameters of all qualified electric valve switch degree control schemes are converted. After the scheme parameters are converted, the parameters of the proportion, integration and differentiation are configured, so that the PID control electric valve system can realize the switch control of the qualified electric valve according to the scheme parameters of different qualified electric valve switch degree control schemes, and obtain the configured PID control electric valve system;

[0079] Running the configured PID control electric valve system, and monitoring whether the fluid passing area on the qualified electric valve is equal to the corresponding fluid passing area on the qualified electric valve opening and closing degree control scheme being executed during the running of the configured PID control electric valve system;

[0080] If not, the fluid passage area is automatically fine-tuned in the PID control electric valve system so that the fluid passage area on the qualified electric valve is equal to the fluid passage area corresponding to the qualified electric valve switch degree control scheme being executed;

[0081] After configuring the PID control electric valve system to execute the qualified electric valve switch degree control plan, the qualified electric valve switch degree control plan is saved in the historical database of the configured PID control electric valve system. The PID control electric valve system is configured to monitor the fluid flow at the qualified electric valve, and the output of the plan parameters corresponding to the qualified electric valve switch degree control plan is realized.

[0082] It should be noted that the PID controller can realize automatic valve switching according to the size of the fluid flow rate, where P is the proportion and the controller output is adjusted according to the size of the error. The larger the error, the larger the output; the smaller the error, the smaller the output. The proportional link can quickly reduce the error; I is the integral, which adjusts the controller output according to the time of error accumulation. The longer the error accumulation time, the larger the output; the shorter the error accumulation time, the smaller the output. The integral link can eliminate the steady-state error of the system; D is the differential, which adjusts the controller output according to the speed of error change. The faster the error changes, the larger the output; the slower the error changes, the smaller the output. The differential link can predict the error change trend in advance, thereby speeding up the system response speed and reducing overshoot. The PID controller realizes the switch control of the electric valve, and controls it according to different control schemes. The reason for saving the qualified electric valve switch degree control scheme in the historical database of the PID control electric valve system is that if the valve needs to be controlled according to the qualified electric valve switch degree control scheme later, there is no need to reconfigure, and the output can be directly queried in the database.

[0083] Figure 2 A flow chart of a method for generating a switch degree control scheme for a qualified electric valve is shown, comprising the following steps:

[0084] S202: construct a fluid flow diagram, perform flow analysis on the fluid, and generate a qualified electric valve opening and closing degree control scheme based on the flow analysis result;

[0085] S204: If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow location of the fluid, then a switch degree control scheme of the qualified electric valves is generated in combination with the number of positions of the final flow location of the fluid.

[0086] Furthermore, in a preferred embodiment of the present invention, the fluid flow diagram is constructed, and the flow analysis of the fluid is performed, and based on the flow analysis result, a qualified electric valve switch degree control scheme is generated, specifically:

[0087] Determine the direction of the fluid flow channel at the installation position of the qualified electric valve, and determine the flow direction of the fluid based on the direction of the fluid flow channel, which is marked as the fluid flow direction;

[0088] Determine the installation positions of all qualified electric valves, and construct a fluid flow diagram in combination with the corresponding fluid flow directions, and mark the installation positions of the qualified electric valves and the final flow positions of the fluids in the fluid flow diagram;

[0089] Install flow rate measuring instruments at different installation positions of qualified electric valves, and preset flow rate measurement time. During the flow rate measurement time, measure the average flow rate of the fluid when the qualified electric valve is fully opened;

[0090] Preset the target fluid flow time, and combine the average flow rate of the fluid when all qualified electric valves are fully opened to determine the total flow rate of the fluid when all qualified electric valves are fully opened, and at the same time determine the maximum receiving fluid flow rate of the final flow location of the fluid;

[0091] If the total flow rate of the fluid when all qualified electric valves are fully opened is less than the maximum receiving fluid flow rate of the final flow location of the fluid, all qualified electric valves are controlled to be fully opened.

[0092] It should be noted that at different qualified electric valves, the fluid flow direction determines the relationship between the electric valve and the final flow position of the fluid. The purpose of constructing a fluid flow diagram is to facilitate the understanding of the positions where different electric valves control the flow direction of the fluid. Under the target flow time of the fluid, the total flow rate of the fluid and the maximum receiving fluid flow rate at the final flow position of the fluid can be calculated based on the average flow rate. When the total flow rate of the fluid is less than the maximum receiving fluid flow rate at the final flow position of the fluid, and the final flow position of the fluid is equal to 1, it proves that the fluids controlled by all electric valves flow to the same position and will not cause the final flow position of the fluid to be fully loaded. At this time, the valve can be fully opened without worrying about full load. If the final flow position of the fluid is not equal to 1, there is no need to worry about causing full load.

[0093] Furthermore, in a preferred embodiment of the present invention, if the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow location of the fluid, then the opening and closing degree control scheme of the qualified electric valves is generated in combination with the number of positions of the final flow location of the fluid, specifically:

[0094] Based on the fluid flow diagram, determining the corresponding relationship between the qualified electric valve and the final flow position of the fluid, and generating a qualified electric valve-final flow position comparison diagram of the fluid;

[0095] Combined with the area of ​​the force-bearing surface of the qualified electric valve, determine the fluid passing area of ​​the qualified electric valve, and calibrate the fluid passing area when the qualified electric valve is fully opened as the maximum fluid passing area;

[0096] The qualified electric valve is sampled for fluid passage area to obtain 1 / 2 maximum fluid passage area and 1 / 3 maximum fluid passage area, and the total fluid flow of the qualified electric valve with 1 / 2 maximum fluid passage area and the total fluid flow of the qualified electric valve with 1 / 3 maximum fluid passage area are measured respectively in combination with a flow velocity measuring instrument, a flow velocity measuring time and a fluid target flow time, and the integral conversion between the fluid passage area and the total fluid flow is performed to generate a fluid passage area-total fluid flow comparison map within the fluid target flow time, which is calibrated as a target comparison map;

[0097] If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the position number of the final flow position of the fluid is equal to 1, then the maximum receiving fluid flow rate of the final flow position of the fluid is introduced into the target comparison map, and the fluid passing area corresponding to the maximum receiving fluid flow rate of the final flow position of the fluid is generated, which is calibrated as a type of fluid passing area, and a type of qualified electric valve switch degree control scheme is generated;

[0098] The control scheme for the switching degree of the first type of qualified electric valve is to control the switching of the qualified electric valve so that the fluid passing area is equal to the first type of fluid passing area, until the total fluid flow through the qualified electric valve is equal to the maximum receiving fluid flow at the final flow location of the fluid;

[0099] If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the number of the final flow position of the fluid is not equal to 1, then based on the qualified electric valve-fluid final flow position comparison chart, different final flow positions of the fluid are classified and analyzed to generate a second-class qualified electric valve switch degree control plan;

[0100] Among them, the switching degree control scheme of the second type of qualified electric valves is to first determine the qualified electric valve corresponding to the final flow direction of the fluid, and determine the maximum receiving fluid sub-flow rate at the final flow direction of the fluid, import the maximum receiving fluid sub-flow rate at the final flow direction of the fluid into the target comparison map for analysis, determine the passage area of ​​the second type of fluid, and control the switching of the qualified electric valve so that the fluid passage area is equal to the second type of fluid passage area, until the total fluid flow rate through the qualified electric valve corresponding to the final flow direction of the fluid is equal to the maximum receiving fluid sub-flow rate at the final flow direction of the fluid.

[0101] It should be noted that sampling the fluid passage area of ​​qualified electric valves can determine the flow rate of the fluid passing through different fluid passage areas, that is, the relationship between the fluid passage area and the flow rate, and finally obtain the target comparison map. The larger the area, the more fluid flow passes through in the same time. If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the number of positions of the final flow position of the fluid is equal to 1, it proves that if the valve is fully opened, it is easy to cause a full load, and it is necessary to control the fluid passage area to reduce the flow rate. The maximum receiving fluid flow rate of the final flow position of the fluid is introduced into the target comparison map, and the fluid passage area corresponding to the maximum receiving fluid flow rate of the final flow position of the fluid can be obtained. At this time, the maximum receiving fluid is balanced with the fluid passing through the valve, and there is no need to close the valve. If the number of positions of the final flow position of the fluid is not equal to 1, it proves that there are multiple fluid flow positions, and different electric valves need to be regulated. The fluid passage areas of different electric valves are different according to the different final flow positions of the fluid.

[0102] like Figure 3 As shown, the second aspect of the present invention further provides an electric valve switch control system for fluid diversion regulation, the electric valve switch control system includes a memory and a processor, the memory stores an electric valve switch control method, and when the electric valve switch control method is executed by the processor, the following steps are implemented:

[0103] Conduct valve opening and closing feasibility assessment and fluid diversion safety assessment on electric valves, and perform maintenance on electric valves based on the assessment results;

[0104] Construct a fluid flow diagram and perform flow analysis on the fluid. Based on the flow analysis results, generate a qualified electric valve opening and closing degree control plan;

[0105] A PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller.

[0106] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for controlling the opening and closing of an electric valve for fluid diversion regulation, characterized in that: The following steps are involved: Conduct valve opening and closing feasibility assessment and fluid diversion safety assessment on electric valves, and perform maintenance on electric valves based on the assessment results; Construct a fluid flow diagram and perform flow analysis on the fluid. Based on the flow analysis results, generate a qualified electric valve opening and closing degree control plan; A PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller.

2. According to the electric valve switch control method for fluid diversion regulation described in claim 1, it is characterized in that: The feasibility assessment of valve switching and the safety assessment of fluid diversion of the electric valve are performed, and the electric valve is repaired based on the assessment results, specifically: The electric valve for controlling the fluid to be diverted and regulated is calibrated as a target electric valve, and a control circuit for controlling the switch of the target electric valve is obtained in the target electric valve and calibrated as a valve switch circuit; Running the valve switch circuit, and determining during the running whether the target electric valve can realize the switch processing, and marking the switch connection of the target electric valve as the switch position of the target electric valve; If not, then remove the foreign matter at the switch position of the target electric valve to ensure that there is no foreign matter at the switch position of the target electric valve to affect the switch processing of the target electric valve. If the target electric valve still cannot achieve the switch processing after the foreign matter is removed, the valve switch circuit is calibrated as a valve switch abnormal circuit; Use an electrician to test the valve switch circuit for a short circuit fault, determine the position where the current intensity in the valve switch circuit does not remain within a preset threshold, mark it as a short circuit fault position, install a humidity sensor at the short circuit fault position, and determine whether the humidity at the short circuit fault position is greater than a preset value based on the humidity sensor; If yes, a big data network is introduced to retrieve and output a method for secondary sealing at the switch position of the target electric valve, so as to ensure that the humidity at the switch position of the target electric valve is less than a preset value; If not, then construct a topological circuit of the valve switch circuit, determine the circuit node associated with the short-circuit fault position based on the topological circuit of the valve switch circuit, and determine the faulty component in the valve switch circuit based on the circuit node associated with the short-circuit fault position, and retrieve and output the repair plan of the faulty component through the big data network, so that the target electric valve can realize the switch processing, and obtain the electric valve with qualified switch; Conduct a fluid diversion safety assessment on the qualified electric valves for switching, and perform safety inspection and maintenance on the qualified electric valves for switching based on the fluid diversion safety assessment results.

3. According to the electric valve switch control method for fluid diversion regulation as described in claim 2, it is characterized in that: The fluid diversion safety assessment is performed on the qualified electric valves for switching, and the safety inspection and maintenance of the qualified electric valves for switching based on the fluid diversion safety assessment result is specifically as follows: Obtain the drop, length and maximum fluid flow rate of the fluid flow channel connected to the qualified switch electric valve, and simultaneously obtain the building specifications of the qualified switch electric valve, and determine the area of ​​the force-bearing surface of the qualified switch electric valve based on the building specifications of the qualified switch electric valve; Combined with the drop, length and maximum flow rate of the fluid flow channel connected to the qualified switch electric valve, and the area of ​​the force-bearing surface of the qualified switch electric valve, calculate the maximum pressure value of the fluid on the qualified switch electric valve; The pressure value in the force-bearing surface of the qualified electric valve is equal to the pressure of the maximum action pressure value, and the displacement length and collapse depth of the qualified electric valve after being subjected to pressure are monitored in real time by the laser ranging method; The maximum displacement length and collapse depth are preset. If the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are not greater than the maximum displacement length and collapse depth, the qualified switch electric valve is calibrated as a qualified electric valve; If the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are greater than the maximum displacement length or collapse depth, a solution for reinforcing the qualified switch electric valve is retrieved and output through the big data network, so that the displacement length and collapse depth of the qualified switch electric valve after being subjected to pressure are not greater than the maximum displacement length and collapse depth, and a qualified electric valve is obtained.

4. According to the method for controlling the opening and closing of an electric valve for fluid flow regulation as described in claim 1, it is characterized in that: The fluid flow diagram is constructed, and the flow analysis is performed on the fluid. Based on the flow analysis results, a qualified electric valve switch degree control scheme is generated, which is specifically: Determine the direction of the fluid flow channel at the installation position of the qualified electric valve, and determine the flow direction of the fluid based on the direction of the fluid flow channel, which is marked as the fluid flow direction; Determine the installation positions of all qualified electric valves, and construct a fluid flow diagram in combination with the corresponding fluid flow directions, and mark the installation positions of the qualified electric valves and the final flow positions of the fluids in the fluid flow diagram; Install flow rate measuring instruments at different installation positions of qualified electric valves, and preset flow rate measurement time. During the flow rate measurement time, measure the average flow rate of the fluid when the qualified electric valve is fully opened; The target fluid flow time is preset, and combined with the average flow rate of the fluid when all qualified electric valves are fully opened, the total flow rate of the fluid when all qualified electric valves are fully opened is determined, and the maximum receiving fluid flow rate of the final flow location of the fluid is determined; If the total flow rate of the fluid when all qualified electric valves are fully opened is less than the maximum receiving fluid flow rate of the final flow location of the fluid, all qualified electric valves are controlled to be fully opened; If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow location of the fluid, then the switching degree control plan of the qualified electric valves is generated in combination with the number of positions of the final flow location of the fluid.

5. The method for controlling the opening and closing of an electric valve for fluid flow regulation according to claim 4, characterized in that: If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow location of the fluid, then the opening and closing degree control scheme of the qualified electric valves is generated in combination with the number of positions of the final flow location of the fluid, specifically: Based on the fluid flow diagram, determining the corresponding relationship between the qualified electric valve and the final flow position of the fluid, and generating a qualified electric valve-final flow position comparison diagram of the fluid; Combined with the area of ​​the force-bearing surface of the qualified electric valve, determine the fluid passing area of ​​the qualified electric valve, and calibrate the fluid passing area when the qualified electric valve is fully opened as the maximum fluid passing area; The qualified electric valve is sampled for fluid passage area to obtain 1 / 2 maximum fluid passage area and 1 / 3 maximum fluid passage area, and the total fluid flow of the qualified electric valve with 1 / 2 maximum fluid passage area and the total fluid flow of the qualified electric valve with 1 / 3 maximum fluid passage area are measured respectively in combination with a flow velocity measuring instrument, a flow velocity measuring time and a fluid target flow time, and the integral conversion between the fluid passage area and the total fluid flow is performed to generate a fluid passage area-total fluid flow comparison map within the fluid target flow time, which is calibrated as a target comparison map; If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the position number of the final flow position of the fluid is equal to 1, then the maximum receiving fluid flow rate of the final flow position of the fluid is introduced into the target comparison map, and the fluid passing area corresponding to the maximum receiving fluid flow rate of the final flow position of the fluid is generated, which is calibrated as a type of fluid passing area, and a type of qualified electric valve switch degree control scheme is generated; The control scheme for the switching degree of the first-class qualified electric valve is to control the switching of the qualified electric valve so that the fluid passing area is equal to the first-class fluid passing area, until the total fluid flow through the qualified electric valve is equal to the maximum receiving fluid flow at the final flow location of the fluid; If the total flow rate of the fluid when all qualified electric valves are fully opened is greater than the maximum receiving fluid flow rate of the final flow position of the fluid, and the number of the final flow position of the fluid is not equal to 1, then based on the qualified electric valve-fluid final flow position comparison chart, different final flow positions of the fluid are classified and analyzed to generate a second-class qualified electric valve switch degree control plan; Among them, the switching degree control scheme of the second type of qualified electric valves is to first determine the qualified electric valve corresponding to the final flow direction of the fluid, and determine the maximum receiving fluid sub-flow rate at the final flow direction of the fluid, import the maximum receiving fluid sub-flow rate at the final flow direction of the fluid into the target comparison map for analysis, determine the passage area of ​​the second type of fluid, and control the switching of the qualified electric valve so that the fluid passage area is equal to the second type of fluid passage area, until the total fluid flow rate through the qualified electric valve corresponding to the final flow direction of the fluid is equal to the maximum receiving fluid sub-flow rate at the final flow direction of the fluid.

6. The method for controlling the opening and closing of an electric valve for fluid flow regulation according to claim 1, characterized in that: The PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller, specifically: Obtain a PID controller and connect the PID controller to a qualified electric valve through a circuit to build a PID controlled electric valve system; Perform a short circuit test on the connection points of the PID control electric valve system by using a multimeter, and reconnect the PID controller and the qualified electric valve if there is a short circuit at the connection point; The blank parameters of the proportion, integration and differentiation of the PID control electric valve system are obtained respectively, and the scheme parameters of all qualified electric valve switch degree control schemes are converted. After the scheme parameters are converted, the parameters of the proportion, integration and differentiation are configured, so that the PID control electric valve system can realize the switch control of the qualified electric valve according to the scheme parameters of different qualified electric valve switch degree control schemes, and obtain the configured PID control electric valve system; Running the configured PID control electric valve system, and monitoring whether the fluid passing area on the qualified electric valve is equal to the corresponding fluid passing area on the qualified electric valve opening and closing degree control scheme being executed during the running of the configured PID control electric valve system; If not, the fluid passage area is automatically fine-tuned in the PID control electric valve system so that the fluid passage area on the qualified electric valve is equal to the fluid passage area corresponding to the qualified electric valve switch degree control scheme being executed; After configuring the PID control electric valve system to execute the qualified electric valve switch degree control plan, the qualified electric valve switch degree control plan is saved in the historical database of the configured PID control electric valve system. The PID control electric valve system is configured to monitor the fluid flow at the qualified electric valve, and the output of the plan parameters corresponding to the qualified electric valve switch degree control plan is realized.

7. An electric valve switch control system for fluid diversion regulation, characterized in that: The electric valve switch control system includes a memory and a processor, wherein the memory stores an electric valve switch control method program. When the electric valve switch control method program is executed by the processor, the electric valve switch control method steps according to any one of claims 1 to 6 are implemented: Conduct valve opening and closing feasibility assessment and fluid diversion safety assessment on electric valves, and perform maintenance on electric valves based on the assessment results; Construct a fluid flow diagram and perform flow analysis on the fluid. Based on the flow analysis results, generate a qualified electric valve opening and closing degree control plan; A PID controller is introduced to execute different qualified electric valve switch degree control schemes through the PID controller.

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