CN113864271B - Digital display type intelligent butterfly valve for precisely controlling flow and pipeline flow control system - Google Patents
Digital display type intelligent butterfly valve for precisely controlling flow and pipeline flow control system Download PDFInfo
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Abstract
The utility model belongs to the technical field of the valve equipment technique and specifically relates to a digital display formula intelligence butterfly valve and pipeline flow control system of accurate control flow is related to, wherein the butterfly valve is including installing butterfly valve main part, electric actuator and the flow detection mechanism on the branch pipe, electric actuator with flow detection mechanism communication connection for acquire the actual flow value that flow detection mechanism detected, electric actuator with the connection can be dismantled to the butterfly valve main part, electric actuator controls the aperture of butterfly valve main part according to actual flow value and predetermined settlement flow value. Pipeline flow control system includes trunk line, a plurality of small transfer line way, intelligent terminal and a plurality of the butterfly valve, the butterfly valve is installed branch pipe says last, intelligent terminal is used for setting for flow value and/or actual flow value to the butterfly valve transmission, the butterfly valve is used for changing the aperture of butterfly valve main part. This application has the effect of promoting the accurate control of being responsible for flow and branch pipe flow.
Description
Technical Field
The application relates to the technical field of valve equipment, in particular to a digital display type intelligent butterfly valve for precisely controlling flow and a pipeline flow control system.
Background
The pipelines are pipelines for transmitting working fluid in a hydraulic system, and comprise simple pipelines, parallel pipelines and branch pipelines, wherein the branch pipelines are pipelines in which a main pipeline is separated from a branch pipeline and then is not merged at one point. The branch pipeline is characterized in that: the mass flow of the main pipeline is equal to the sum of the mass flow of the branch pipelines. When the main pipe flow and the branch pipe flow are controlled, a manual control mode is generally adopted: the digital display type flowmeter or the mechanical flowmeter is arranged on a main pipe pipeline and a branch pipe pipeline, the flow reading measured by the flowmeter is checked through naked eyes, and then the main pipe ball valve or the branch pipe ball valve is manually adjusted to achieve the effect of controlling the flow. However, manual control is time-consuming and labor-consuming, and control accuracy is difficult to guarantee.
For the related technologies, the inventor thinks that the related technologies have limited intelligence, the control precision is difficult to guarantee, and the precise control of the main pipe flow and the branch pipe flow is difficult to realize.
Disclosure of Invention
In order to help improving pipeline flow control's accuracy, this application provides a digital display formula intelligence butterfly valve and pipeline flow control system of accurate control flow.
First aspect, this application provides a digital display formula intelligence butterfly valve of accurate control flow, adopts following technical scheme:
the utility model provides a digital display formula intelligence butterfly valve of accurate control flow, includes butterfly valve main part 1 of installing on the branch pipe, still includes electric actuator 2 and flow detection mechanism 3, electric actuator 2 with 3 communication connection of flow detection mechanism are used for acquireing the actual flow value that 3 detection of flow detection mechanism were surveyed, electric actuator 2 with butterfly valve main part 1 can dismantle the connection, electric actuator 2 controls butterfly valve main part 1's aperture according to actual flow value and preset settlement flow value.
By adopting the technical scheme, the flow detection mechanism 3 executes measurement of an actual flow value, the electric execution mechanism 2 acquires the actual flow value from the flow detection mechanism 3, the electric execution mechanism 2 controls the opening of the butterfly valve main body 1 according to the actual flow value and a preset set flow value, the opening of the butterfly valve main body 1 installed on a certain branch pipe is related to the flow of the branch pipe, and the accurate control of the flow of the branch pipe can be realized by adjusting the opening of the butterfly valve main body 1 on the branch pipe. In addition, the whole adjusting process of the scheme is automatically completed without manual participation, and the intelligent adjustment method is beneficial to realizing intellectualization. The application of digital display formula intelligence butterfly valve possesses easy and simple to handle, simple structure advantage.
Optionally, the electric actuator 2 includes an embedded system 210, a servo motor 220 and a digital display 230, the embedded system 210 is in communication connection with the flow detection mechanism 3, and is configured to acquire the actual flow value, the embedded system 210 is in communication connection with a control end of the servo motor 220, and is configured to send a motor control signal to control the servo motor 220 to execute an adjustment action, the embedded system 210 is in communication connection with the digital display 230, and is configured to transmit the actual flow value and the set flow value to the digital display 230, so that the digital display 230 displays the actual flow value and the set flow value.
By adopting the above technical scheme, the embedded system 210 in the electric actuator 2 obtains the actual flow value detected by the flow detection mechanism 3, and judges whether to send a motor control signal to the servo motor 220 according to the actual flow value and the preset flow value, the servo motor 220 is controlled by the motor control signal and can react quickly, the received motor control signal is converted into an angular displacement or an angular velocity on the motor shaft for output, so that the rotor rotation of the servo motor 220 is realized, the servo motor 220 is controlled accurately through the embedded system 210, and the accurate flow control is realized. In addition, the embedded system 210 transmits the actual flow value and the set flow value to the digital display 230 for data display, so that the client can visually know the current flow state.
Optionally, the servo motor 220 is detachably connected to the butterfly valve body 1, and the servo motor 220 is configured to change the opening degree of the butterfly valve body 1.
Through adopting above-mentioned technical scheme, servo motor 220 is connected with butterfly valve main part 1, and when servo motor 220 receives motor control signal control and when carrying out the adjustment action, drive butterfly valve main part 1 and remove to control butterfly valve main part 1's aperture, butterfly valve main part 1's aperture is relevant with the flow of pipeline, and then helps realizing the accurate control of flow.
Optionally, servo motor 220 with be provided with speed reducer device 4 between the butterfly valve main part 1, speed reducer device 4 with servo motor 220 passes through the shaft coupling and connects, speed reducer device 4 with the connection can be dismantled to butterfly valve main part 1, and the servo motor 220 of being convenient for reduces the rotational speed when the load is too big, promotes the moment of torsion.
Through adopting above-mentioned technical scheme, speed reducer device 4 of servo motor 220 generally is used for the occasion of the accurate control of the big moment of torsion of low-speed, can appear shaking phenomenon when servo motor 220 too big load leads to the motor to stop, speed reducer device 4 is convenient for reduce the rotational speed, promotes the moment of torsion to improve the torsion of motor.
Optionally, the embedded system 210 includes a control module 24, and a data acquisition module 21 and a data processing module 22 electrically connected to the control module 24; the data acquisition module 21 is in communication connection with the flow detection mechanism 3, and acquires an actual flow value measured by the flow detection mechanism 3 when the data acquisition module 21 receives a first acquisition instruction of the control module 24, and acquires the set flow value when the data acquisition module 21 receives a second acquisition instruction of the control module 24; the data processing module 22 is electrically connected to the data acquiring module 21, and is configured to compare the actual flow value with the set flow value in the data acquiring module 21.
By adopting the above technical solution, the control module 24 in the embedded system 210 sends corresponding control instructions to other modules for controlling other modules. The data obtaining module 21 in the embedded system 210 obtains the actual flow value measured by the flow detection mechanism 3 according to the first obtaining instruction of the control module 24, and the data obtaining module 21 can also obtain the set flow value according to the second obtaining instruction of the control module 24. The embedded system 210 compares the flow value detected by the flow detection mechanism 3 in real time with the set flow value through the data processing module 22.
Optionally, the embedded system 210 further includes a communication module 23 electrically connected to the control module 24, where the communication module 23 is configured to communicate with a preset intelligent terminal 26, obtain the set flow value issued by the intelligent terminal 26 and/or upload the actual flow value to the intelligent terminal 26.
By adopting the technical scheme, a user can input a set flow value from the intelligent terminal 26, the set flow value is an ideal flow value required by the user and is used for comparing with an actual flow value, so that whether the actual flow value is ideal or not can be conveniently judged, and whether the subsequent control and regulation work of precise flow is required or not can be conveniently carried out, and the digital display type intelligent butterfly valve carries out intelligent regulation on the flow according to the set value input by the user; 2. the communication module 23 remotely transmits the actual flow value data to the intelligent terminal 26, so that a user can view the data from the intelligent terminal 26, thereby facilitating remote monitoring.
Optionally, the embedded system 210 further includes a safety alarm module 25 electrically connected to the control module 24, and the control module 24 is configured to transmit an alarm instruction to the safety alarm module 25 when the upper and lower deviation values exceed preset upper and lower deviation values; the safety alarm module 25 is configured to perform an abnormal alarm when receiving the alarm command.
By adopting the technical scheme, if the digital display type intelligent butterfly valve detects that the difference between the actual flow value and the set flow value is always in a larger state and cannot realize the control of the flow in a specific time, the digital display type intelligent butterfly valve is explained to be abnormal, and at the moment, the safety alarm module 25 can alarm through a red light and/or sound to prompt personnel to check the equipment in time.
Optionally, the flow detection mechanism 3 includes a sensor module, an amplifier, a filter and a memory, the sensor module is used for detecting an actual flow signal, the amplifier is electrically connected to the sensor module and is used for receiving the actual flow signal detected by the sensor module and amplifying the actual flow signal detected by the sensor module, the filter is electrically connected to the amplifier and is responsible for filtering the actual flow signal after amplification, the actual flow signal is converted into an actual flow value after filtering, and the memory is electrically connected to the filter and is used for storing the actual flow value.
By adopting the technical scheme, the flow detection mechanism 3 realizes the function of detecting the flow value in real time. The sensor module, the amplifier, the filter and the memory are sequentially connected, the detection signal is amplified and denoised after the sensor module detects the signal, interference signals generated by pressure fluctuation and pipeline vibration can be effectively eliminated, the anti-interference capability of the flow detection mechanism 3 is improved, and therefore the flow measurement value detected by the flow detection mechanism 3 is stable.
In a second aspect, the present application provides a system for controlling a flow rate of a pipeline, which adopts the following technical solutions:
a pipeline flow control system comprises a main pipeline, a plurality of branch pipelines, an intelligent terminal 26 and a plurality of butterfly valves; the branch pipelines are communicated with the main pipeline, and the butterfly valves are arranged on the branch pipelines and are in one-to-one correspondence with the branch pipelines; the intelligent terminal 26 is used for transmitting a set flow value and/or an actual flow value to the butterfly valve, and the butterfly valve on each branch pipe changes the opening of the butterfly valve main body 1 according to the set flow value and the actual flow value of the corresponding branch pipe.
Through adopting above-mentioned technical scheme, an intelligence butterfly valve of installation on every branch pipe, the intelligence butterfly valve of installation carries out accurate flow control corresponding the branch pipe on every branch pipe, and the flow of being responsible for is the total of all branch pipe flows, has indirectly reached and has carried out the effect of accurate control flow to being responsible for the flow, helps realizing the accurate control to being responsible for flow and branch pipe flow.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the utility model provides a digital display formula intelligence butterfly valve of accurate control flow will adjust and detect through embedded system 210 and close as an organic wholely, and is small, simple to operate, accurate control. The electric actuator 2 obtains the flow value detected by the detection mechanism in real time, compares the flow value detected by the detection mechanism in real time with the set flow value received by the embedded system 210, and controls the servo motor 220 through the algorithm of the embedded system 210, wherein the servo motor 220 is connected with the butterfly valve, so that the opening of the butterfly valve is controlled, and the accurate control of the flow is finally realized.
2. The utility model provides a pipeline flow control system is through installing an intelligent butterfly valve on every branch pipe, and the intelligent butterfly valve of installation carries out accurate flow control at corresponding branch pipe on every branch pipe, because the flow of being responsible for is the total of all branch pipe flow, consequently, even do not install the butterfly valve on being responsible for and also can indirectly reach the effect of carrying out the accurate control flow to being responsible for the flow, show the accurate control who is responsible for flow and branch pipe flow among the promotion pipeline flow control system.
Drawings
Fig. 1 is a three-dimensional diagram of a digital display intelligent butterfly valve according to an embodiment of the present application.
Fig. 2 is a front view of a digital display intelligent butterfly valve according to an embodiment of the application.
Fig. 3 is a right side view of a digital display intelligent butterfly valve according to an embodiment of the application.
Fig. 4 is a top view of a digital display intelligent butterfly valve according to an embodiment of the present application.
Fig. 5 is a module structure diagram of a digital display type intelligent butterfly valve according to an embodiment of the present application.
Description of the reference numerals: 1. a butterfly valve body; 2. an electric actuator; 3. a flow rate detection mechanism; 4. a speed reducer device; 210. an embedded system; 220. a servo motor; 230. a digital display; 21. a data acquisition module; 22. a data processing module; 23. a communication module; 24. a control module; 25. a security alarm module; 26. and (4) an intelligent terminal.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses digital display formula intelligence butterfly valve of accurate control flow. Referring to fig. 1-4, the digital display type intelligent butterfly valve comprises a butterfly valve main body 1 arranged on a branch pipe, an electric actuator 2 and a flow detection mechanism 3. The flow detection mechanism 3 is fixedly connected to one end of the branch pipe provided with the butterfly valve main body 1. The electric actuator 2 is arranged at the upper end of the flow detection mechanism 3 through a support rod, and the electric actuator 2 is in communication connection with the flow detection mechanism 3 and is used for acquiring an actual flow value detected by the flow detection mechanism 3. Electric actuator 2 with butterfly valve main part 1 can dismantle the connection, electric actuator 2 controls butterfly valve main part 1's aperture according to actual flow value and predetermined settlement flow value when actual flow value is less than predetermined settlement flow value, controls butterfly valve main part 1's aperture increase when actual flow value is greater than predetermined settlement flow value, control butterfly valve main part 1's aperture reduces.
The set flow value is an ideal flow value of the branch pipe, is a preset flow value for judging whether an actual flow value needs to be adjusted, and can be input through the intelligent terminal 26 and displayed on the digital display 230. And the actual flow value is used for comparing with the set flow value.
The electric actuator 2 and the flow detection mechanism 3 are physically connected through the supporting rod, and the position relation setting and connecting mode avoids interference of slight vibration generated during the working of the electric actuator 2 on the detection of the flow detection mechanism 3, and contributes to accurate detection of flow. The flow detection mechanism 3 of intelligence butterfly valve is responsible for measuring actual flow value, electric actuator 2 with flow detection mechanism 3 communication connection to electric actuator 2 follows flow detection mechanism 3 acquires actual flow value, and electric actuator 2 controls the aperture of butterfly valve main part 1 according to actual flow value and the preset flow value of setting for. An intelligent butterfly valve is installed on each branch pipe, the opening degree of the butterfly valve body 1 installed on a certain branch pipe is related to the flow of the branch pipe, and the accurate control of the flow of the branch pipe can be realized by adjusting the opening degree of the butterfly valve body 1 on the branch pipe. The intelligent butterfly valve of installation carries out accurate flow control corresponding the branch pipe on every branch pipe, and the flow on being responsible for is the total of all branch pipe flows, has indirectly reached and has carried out the effect of accurate control flow to being responsible for the flow, has showing the accurate control who has promoted and is responsible for flow and branch pipe flow. In addition, the whole adjusting process of the scheme is automatically completed without manual participation, and the intelligent adjustment method is beneficial to realizing intellectualization. The digital display type intelligent butterfly valve further has the advantages of low cost, simple installation steps, simplicity in operation and simple structure.
Referring to fig. 1, 3 and 4, the electric actuator 2 includes an embedded system 210, a servo motor 220 and the digital display 230, and the embedded system 210 is in communication connection with the flow detection mechanism 3 for acquiring the actual flow value; the embedded system 210 is in communication connection with the control end of the servo motor 220, and is configured to send a motor control signal to control the servo motor 220 to execute an adjustment action after receiving an adjustment instruction; the embedded system 210 is disposed inside or at an upper end of a housing of the digital display 230, and the embedded system 210 is in communication connection with the digital display 230 and is configured to transmit the actual flow value and the set flow value to the digital display 230, so that the digital display 230 displays the actual flow value and the set flow value.
The embedded system 210 in the electric actuator 2 obtains the actual flow value detected by the flow detection mechanism 3, and judges whether to send a motor control signal to the servo motor 220 according to the actual flow value and a preset set flow value, the servo motor 220 is controlled by the motor control signal and can quickly respond, the received motor control signal is converted into an angular displacement or an angular velocity on a motor shaft for output, the rotation of a rotor of the servo motor 220 is realized, so that the servo motor 220 is accurately controlled through the embedded system 210, and the accurate flow control is realized. In addition, the embedded system 210 transmits the actual flow value and the set flow value to the digital display 230 for data display, so that the client can visually know the current flow state.
The adjustment command may be generated inside the embedded system 210, and the embedded system 210 transmits a motor control signal to the servo motor 220 after generating the adjustment command. The adjustment instruction may be sent to the embedded system 210 by the intelligent terminal 26, and the embedded system 210 transmits a motor control signal to the servo motor 220 after receiving the adjustment instruction.
The servo motor 220 is detachably connected with the butterfly valve body 1, and may be connected by screws or other physical means. Thereby servo motor 220 can turn into power with motor control signal and thereby accurate control butterfly valve main part 1, when servo motor 220 receives motor control signal control and when carrying out the adjustment action, drives butterfly valve main part 1 and removes to control butterfly valve main part 1's aperture, butterfly valve main part 1's aperture is relevant with the flow of pipeline, and then helps realizing the accurate control of flow.
The butterfly valve body 1 may be an electric butterfly valve body, and when the butterfly valve body 1 is an electric butterfly valve body, the servo motor 220 is electrically connected to the butterfly valve body 1, and the butterfly valve body 1 is controlled by an electric signal to change the opening degree.
Referring to fig. 5, the embedded system 210 includes a control module 24, a data acquisition module 21, and a data processing module 22, wherein the control module 24 is electrically connected to the data acquisition module 21, and the control module 24 is electrically connected to the data processing module 22. The data acquisition module 21 is in communication connection with the flow detection mechanism 3, and acquires an actual flow value measured by the flow detection mechanism 3 when the data acquisition module 21 receives a first acquisition instruction of the control module 24, and acquires the set flow value when the data acquisition module 21 receives a second acquisition instruction of the control module 24; the data processing module 22 is electrically connected to the data obtaining module 21, and is configured to compare the actual flow value with the set flow value in the data obtaining module 21.
The first acquiring instruction is a control instruction for acquiring an actual flow value from the flow detecting mechanism 3 by the data acquiring module 21, and the control module 24 may transmit one first acquiring instruction to the data acquiring module 21 at a fixed time interval t. The second obtaining instruction is a control instruction for the data obtaining module 21 to obtain a set flow value and/or set an upper and lower deviation value from the intelligent terminal 26, when the intelligent terminal 26 has a newly input set flow value and/or set an upper and lower deviation value, the intelligent terminal 26 transmits a trigger signal to the control module 24, and when the control module 24 receives the trigger signal of the intelligent terminal 26, the control module 24 transmits a second obtaining instruction to the data obtaining module 21.
The deviation value is a difference between an actual flow rate value detected by the flow rate detection means 3 and a set flow rate value. The calculation method of the deviation value comprises the following steps: and when the set flow value only comprises one set flow value, calculating the difference between the actual flow value and the set flow value to obtain a deviation value. And when the set flow value comprises more than two set flow values, calculating the difference between the actual flow value and the closest set flow value to obtain a deviation value. When the calculated deviation value is a positive number, the deviation value is an upper deviation value, when the calculated deviation value is a negative number, the deviation value is a lower deviation value, that is, when the actual flow rate value detected by the flow rate detection means 3 is greater than the set flow rate value closest thereto among the set flow rate values, the deviation value is an upper deviation value, and when the actual flow rate value detected by the flow rate detection means 3 is less than the set flow rate value closest thereto among the set flow rate values, the deviation value is a lower deviation value.
The set upper and lower deviation values are standard deviation values preset to judge whether the actual deviation value is within a reasonable range. If the absolute value of the calculated actual deviation value is smaller than the absolute value of the set upper and lower deviation values, the difference between the current flow and the ideal flow is smaller, and the flow does not need to be adjusted; if the absolute value of the calculated actual deviation value is greater than the absolute value of the set upper and lower deviation values, it indicates that the difference between the current flow and the ideal flow is large, and the flow needs to be adjusted to be close to the ideal flow, which is the preset set flow value, at this time, the data processing module 22 in the embedded system 210 generates an adjustment instruction, transmits the adjustment instruction to the control module 24, and the control module 24 sends a motor control signal to control the servo motor 220 to perform an adjustment operation, so as to adjust the opening of the butterfly valve main body 1.
The adjustment performed by the servo motor 220 includes adjustment of a rotation angle of a rotor of the servo motor 220, adjustment of a rotation direction of the rotor of the servo motor 220, or other parameters for driving the butterfly valve body to change the opening degree, such as angular displacement adjustment or angular velocity adjustment. The precision of the adjustment performed by the servo motor 220 and the upper and lower deviation values have a one-to-one correspondence relationship, which may be obtained through repeated measurement experiments, and finally form a standard correspondence table to be stored in the embedded system 210. When the data processing module 22 calculates the upper and lower deviation values, the corresponding adjustment actions are found from the standard correspondence table according to the calculated upper and lower deviation values, so that the accuracy of the adjustment actions executed by the servo motor 220 can be determined. For example, when the opening degree of the butterfly valve body 1 is adjusted, the rotation direction of the rotor of the servo motor 220 is determined according to the sign of the deviation value in the standard correspondence table, and the rotation angle of the rotor of the servo motor 220 is determined according to the magnitude of the deviation value. The upper deviation corresponds to clockwise rotation adjustment, the lower deviation corresponds to counterclockwise rotation adjustment, the rotation angle of the rotor of the servo motor 220 corresponding to every two deviation values is 1 degree, if the upper deviation value is +8 degrees, when the rotor of the servo motor 220 performs adjustment action, the rotation direction is clockwise, the rotation angle is 4 degrees, and when the servo motor 220 performs adjustment action, the butterfly valve body 1 is driven to change the opening degree, so that the adjustment of the opening degree of the butterfly valve body 1 can be completed.
The set upper and lower offset values may be input through the smart terminal 26 and may be displayed on the digital display 230.
In the embedded system 210, the control module 24 is used for sending corresponding control instructions to other modules for controlling other modules. The data obtaining module 21 in the embedded system 210 obtains the actual flow value measured by the flow detection mechanism 3 according to the first obtaining instruction of the control module 24, and the data obtaining module 21 can also obtain the set flow value and/or set the upper and lower deviation values according to the second obtaining instruction of the control module 24. The embedded system 210 compares the flow value detected by the flow detection mechanism 3 in real time with the set flow value through the data processing module 22.
Referring to fig. 5, the embedded system 210 further includes a communication module 23 electrically connected to the control module 24, where the communication module 23 is configured to communicate with the intelligent terminal 26, obtain the set flow value issued by the intelligent terminal 26, and/or upload the actual flow value to the intelligent terminal 26. The intelligent terminal 26 is further configured to store the actual flow value uploaded by the communication module 23.
The communication module 23 may be a Modbus communication module. The intelligent terminal 26 may be a PLC or computer terminal or other terminal. The user can input a set flow value from the PLC or the computer terminal, the set flow value is an ideal flow value required by the user and is used for being compared with an actual flow value, whether the actual flow value is ideal or not is judged conveniently, whether subsequent precise flow control and adjustment work is needed or not is judged, an upper deviation value and a lower deviation value can be input and set by the user from the PLC or the computer terminal, and the digital display type intelligent butterfly valve can perform intelligent flow adjustment according to the set value input by the user. Modbus communication module stores actual flow value data teletransmission to PLC or computer terminal, and the user can look over data, the remote monitoring of being convenient for from PLC or computer terminal.
The embedded system 210 further includes a safety alarm module 25 electrically connected to the control module 24, and the control module 24 is configured to transmit an alarm instruction to the safety alarm module 25 when a duration of the upper and lower deviation values exceeding a preset upper and lower deviation value is greater than a preset safety time threshold T; the safety alarm module 25 is used for alarming for abnormity when receiving an alarm instruction.
Under the normal condition, the butterfly valve can accomplish the adjustment process of flow at preset safe time threshold T, when the duration that upper and lower deviation value surpassed to set for upper and lower deviation value is greater than preset safe time threshold T, then explain that digital display formula intelligence butterfly valve detects the difference between actual flow value and the settlement flow value and is in great state always, the butterfly valve can' T realize the control of flow size in specific time, then it is unusual to explain that digital display formula intelligence butterfly valve probably appears, safety alarm module 25 can report to the police and/or sound the warning through the red light this moment, the suggestion personnel in time check out equipment. When the butterfly valve is applied to flow control of various corrosive media, liquid metal and radioactive media, the abnormity warning function is beneficial to improving the safety of the butterfly valve.
The flow rate detection mechanism 3 performs a function of detecting an actual flow rate value of the branch pipe. The sensor module, the amplifier, the filter and the memory are electrically connected in sequence, the sensor module amplifies and filters the detected actual flow signal after detecting the actual flow signal, interference signals generated by pressure fluctuation and pipeline vibration can be effectively eliminated, the anti-interference capability of the flow detection mechanism 3 is improved, and therefore the actual measurement value of the flow is stable.
The flow detection mechanism 3 may be a vortex flowmeter including a sensor module, an amplifier, a filter, and a memory. The measurement principle of the vortex flowmeter is based on the principle of fluid vibration to perform flow measurement. Under certain flow conditions, a portion of the fluid may produce vibrations, the frequency of which is closely related to the flow rate or volume of the fluid. The vortex flowmeter has the advantages of strong function, wide flow range, simple operation and maintenance, convenient installation and use and the like, and is widely applied to various flow measurement in the industries of petroleum, chemical industry, electric power, metallurgical coal and the like.
The implementation principle of the digital display type intelligent butterfly valve for precisely controlling the flow is as follows: the electric actuator 2 obtains the flow value detected by the detection mechanism in real time, compares the flow value detected by the detection mechanism in real time with the set flow value received by the embedded system 210, and controls the servo motor 220 through the algorithm of the embedded system 210, wherein the servo motor 220 is connected with the butterfly valve, so that the opening of the butterfly valve is controlled, and the accurate control of the flow is finally realized. The utility model provides a digital display formula intelligence butterfly valve of accurate control flow will adjust and detect through embedded system 210 and close as an organic wholely, and is small, simple to operate, accurate control.
The digital display type intelligent butterfly valve capable of precisely controlling the flow can be applied to controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipeline mainly plays a role in cutting off and precise throttling.
The embodiment of the application also discloses a pipeline flow control system, which comprises a main pipeline, a plurality of branch pipelines, an intelligent terminal 26 and a plurality of butterfly valves, wherein each branch pipeline is communicated with the main pipeline, and the butterfly valves are arranged on the branch pipelines and are in one-to-one correspondence with the branch pipelines; the intelligent terminal 26 is used for transmitting a set flow value and/or an actual flow value to the butterfly valve, and the butterfly valve on each branch pipe changes the opening of the butterfly valve body 1 according to the set flow value and the actual flow value of the corresponding branch pipe.
The implementation principle of the pipeline flow control system in the embodiment of the application is as follows: pipeline flow control system is through installing an intelligent butterfly valve on every branch pipe, and the intelligent butterfly valve of installation carries out accurate flow control at corresponding the branch pipe on every branch pipe, because the flow of being responsible for is the total of all branch pipe flows, consequently, even do not install the butterfly valve and also can indirectly reach the effect of carrying out the accurate control flow to being responsible for the flow on being responsible for, show the accurate control who has promoted the main pipe flow among the pipeline flow control system and branch pipe flow.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (3)
1. A pipeline flow control system is characterized by comprising a main pipeline, a plurality of branch pipelines, an intelligent terminal (26) and a plurality of digital display intelligent butterfly valves for precisely controlling flow; the branch pipelines are all communicated with the main pipeline, and the butterfly valves are installed on the branch pipelines and are arranged in one-to-one correspondence with the branch pipelines; the intelligent terminal (26) is used for transmitting a set flow value and/or an actual flow value to the butterfly valve, and the butterfly valve on each branch pipeline changes the opening of the butterfly valve main body (1) according to the set flow value and the actual flow value of the corresponding branch pipeline;
the butterfly valve comprises a butterfly valve main body (1), an electric actuator (2) and a flow detection mechanism (3), wherein the butterfly valve main body (1), the electric actuator (2) and the flow detection mechanism (3) are installed on a branch pipeline and are in communication connection and used for acquiring an actual flow value detected by the flow detection mechanism (3), a servo motor (220) of the electric actuator (2) is detachably connected with the butterfly valve main body (1), the servo motor (220) is used for changing the opening of the butterfly valve main body (1), and the electric actuator (2) controls the opening of the butterfly valve main body (1) according to the actual flow value and a preset set flow value;
the electric actuator (2) further comprises an embedded system (210) and a digital display (230), the embedded system (210) is arranged inside a shell of the digital display (230), the digital display (230) is installed on a corresponding branch pipeline, the embedded system (210) is in communication connection with the flow detection mechanism (3) and used for acquiring the actual flow value, the embedded system (210) is in communication connection with a control end of the servo motor (220) and used for sending a motor control signal to control the servo motor (220) to execute an adjustment action, and the embedded system (210) is in communication connection with the digital display (230) and used for transmitting the actual flow value and the set flow value to the digital display (230) so that the digital display (230) displays the actual flow value and the set flow value;
a speed reducer device (4) is arranged between the servo motor (220) and the butterfly valve main body (1), the speed reducer device (4) is connected with the servo motor (220) through a coupler, and the speed reducer device (4) is detachably connected with the butterfly valve main body (1), so that the rotation speed of the servo motor (220) is reduced when the load is overlarge, and the torque is improved;
the embedded system (210) comprises a control module (24) and a data acquisition module (21) and a data processing module (22) which are electrically connected with the control module (24); the data acquisition module (21) is in communication connection with the flow detection mechanism (3), when the data acquisition module (21) receives a first acquisition instruction of the control module (24), the actual flow value measured by the flow detection mechanism (3) is acquired, and when the data acquisition module (21) receives a second acquisition instruction of the control module (24), the set flow value is acquired; the data processing module (22) is electrically connected with the data acquisition module (21) and is used for comparing the actual flow value with the set flow value in the data acquisition module (21);
the embedded system (210) further comprises a communication module (23) electrically connected with the control module (24), wherein the communication module (23) is used for communicating with a preset intelligent terminal (26) to obtain the set flow value issued by the intelligent terminal (26) and/or upload the actual flow value to the intelligent terminal (26);
the flow on the main pipeline is the sum of the flows of all branch pipelines, and the flow can be controlled precisely on the main pipeline indirectly without installing a butterfly valve on the main pipeline.
2. The pipeline flow control system according to claim 1, wherein the embedded system (210) further comprises a safety alarm module (25) electrically connected to the control module (24), and the control module (24) is configured to transmit an alarm command to the safety alarm module (25) when a duration of the upper and lower deviation values exceeding a preset set upper and lower deviation value is greater than a preset safety time threshold T; the safety alarm module (25) is used for alarming abnormity when receiving an alarm instruction.
3. The pipeline flow control system according to claim 1, wherein the flow detection mechanism (3) includes a sensor module, an amplifier, a filter and a memory, the sensor module is configured to detect an actual flow signal, the amplifier is electrically connected to the sensor module and configured to receive the actual flow signal detected by the sensor module and amplify the actual flow signal detected by the sensor module, the filter is electrically connected to the amplifier and is responsible for filtering the amplified actual flow signal and converting the actual flow signal into an actual flow value after filtering, and the memory is electrically connected to the filter and is configured to store the actual flow value.
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