CN214699226U - Remote pressure regulating valve control system - Google Patents
Remote pressure regulating valve control system Download PDFInfo
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- CN214699226U CN214699226U CN202120964239.6U CN202120964239U CN214699226U CN 214699226 U CN214699226 U CN 214699226U CN 202120964239 U CN202120964239 U CN 202120964239U CN 214699226 U CN214699226 U CN 214699226U
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Abstract
The utility model provides a remote pressure regulating valve control system, including pressure acquisition device, control assembly, self-operated electricity generation subassembly and communication module, the signal input part of control assembly connects the signal output part of pressure acquisition device and pilot valve subassembly, the signal output part of control assembly connects the signal input part of pilot valve subassembly; the communication module is in communication connection with the control assembly; the pressure acquisition device acquires a valve front pressure value and a valve rear pressure value; the pilot valve assembly adjusts the opening of the main valve according to the control signal and collects the stroke value of the pilot valve assembly; the control component compares the pre-valve pressure value, the pilot valve stroke value and the post-valve pressure value with a preset pre-valve minimum pressure operation threshold, a preset pilot valve stroke threshold upper limit, a preset pilot valve stroke threshold lower limit and a preset post-valve pressure threshold, and outputs a control signal and early warning information; the self-operated power generation assembly provides a power supply; the communication module realizes remote communication with the cloud. The utility model protects city water supply network operating pressure, ensured stable water supply pressure.
Description
Technical Field
The utility model relates to a thing networking communication and control technology field, more specifically relates to a remote air-vent valve control system.
Background
The urban tap water has numerous users, the water using habits and the water consumption of the users are different, and a plurality of challenges are brought to the urban water supply department for guaranteeing water supply, for example, high-pressure water supply is adopted, so that the normal water use of the users is guaranteed, but the high-pressure water supply cost is doubled, and the hidden danger of pipe explosion is brought to a water supply network; normal pressure water supply is adopted, and under the condition that the water consumption of local area users or a large water user is increased steeply, the pressure of the water supply of the pipe network is relieved, so that the water pressure of the large-area tap water users on the pipe network is insufficient, and the conditions of under-pressure and no water exist. Therefore, the problem that the water pressure of a pipe network is required to be accurately regulated and controlled is urgently solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide a long-range pressure regulating valve control system, the pressure value behind the valve before the monitoring valve respectively protects city water supply network operating pressure before the valve, ensures stable water supply pressure behind the valve simultaneously.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a remote pressure regulating valve control system is arranged on a main valve, the main valve is also provided with a pilot valve assembly for controlling the opening degree of the main valve, the control system comprises at least two pressure acquisition devices respectively arranged at the front end and the rear end of the main valve, a control assembly and a communication module which are arranged on the main valve, and a self-operated power generation assembly arranged in a flow channel of the pilot valve assembly; the output end of the self-operated power generation assembly is connected with the power input end of the control assembly, a plurality of signal input ends of the control assembly are respectively connected with the signal output ends of each pressure acquisition device and the pilot valve assembly, and the signal output end of the control assembly is connected with the signal input end of the pilot valve assembly; the communication module is in communication connection with the control component;
the self-operated power generation assembly is used for converting the kinetic energy of water into electric energy and supplying power to the control assembly;
the pressure acquisition devices are used for respectively acquiring a valve front pressure value and a valve rear pressure value;
the pilot valve assembly is used for adjusting the opening of the main valve according to a control signal of the control assembly, acquiring a pilot valve stroke value when the opening of the main valve is adjusted, and transmitting the pilot valve stroke value to the control assembly;
the control assembly is used for comparing the pre-valve pressure value, the pilot valve stroke value and the post-valve pressure value with a preset pre-valve minimum pressure operation threshold value, a preset pilot valve stroke threshold value upper limit, a preset pilot valve stroke threshold value lower limit and a preset post-valve pressure threshold value respectively, and outputting early warning information and control signals to the pilot valve assembly according to the comparison result;
the communication module is used for realizing remote communication between the control assembly and the cloud.
On the basis of the technical scheme, the utility model discloses can also make following improvement.
Preferably, the control assembly comprises an MCU, a pressure acquisition unit, a threshold monitoring unit, a motor control unit and a power supply unit, the signal output ends of the two pressure acquisition devices are respectively connected with the two signal input ends of the pressure acquisition unit, the signal output end of the pilot valve assembly is connected with the signal input end of the threshold monitoring unit, the signal output end of the pressure acquisition unit and the signal output end of the threshold monitoring unit are respectively connected with the signal input end of the MCU, the signal output end of the MCU is connected with the signal input end of the motor control unit, and the output end of the motor control unit is connected with the signal input end of the pilot valve assembly; the output end of the self-operated power generation assembly is connected with the input end of the power supply unit, and the MCU, the pressure acquisition unit, the threshold monitoring unit and the motor control unit are respectively in power supply connection with the output end of the power supply unit;
the pressure acquisition unit is used for acquiring a pre-valve pressure value and a post-valve pressure value output by the pressure acquisition device;
the threshold monitoring unit is used for acquiring a pilot valve stroke value of the pilot valve assembly;
the MCU is used for comparing the pressure value before the valve with a preset lowest running pressure threshold before the valve, outputting a control signal for reducing the opening degree of the valve to the pilot valve assembly when the pressure value before the valve is lower than the lowest running pressure threshold before the valve, and then comparing the stroke value of the pilot valve with a preset lower limit of the stroke threshold of the pilot valve: when the stroke value of the pilot valve reaches the lower limit of the stroke threshold value of the pilot valve, the opening degree of the valve is minimum, and if the pressure value before the valve is still lower than the lowest running pressure threshold value before the valve, early warning information is sent out; when the pre-valve pressure value is not lower than the pre-valve minimum operating pressure threshold, comparing the post-valve pressure value with a post-valve pressure threshold: outputting a control signal to the pilot valve assembly to decrease the valve opening when the post-valve pressure value is greater than the post-valve pressure threshold; when the post-valve pressure value is smaller than the post-valve pressure threshold value, outputting a control signal for increasing the valve opening degree to the guide valve component; when the stroke value of the pilot valve reaches the upper limit of the stroke threshold value of the pilot valve, the opening degree of the valve is maximum, and if the pressure value after the valve is still smaller than the lower limit threshold value of the pressure after the valve, early warning information is sent out;
the motor control unit is used for controlling the action of the pilot valve component according to a control signal sent by the MCU so as to adjust the opening of the valve;
the power supply unit is used for storing the electric energy of the self-operated power generation assembly and providing a working power supply for the power utilization element of the device.
Preferably, the MCU is further configured to, in the process of increasing the valve opening, stop outputting the control signal for increasing the valve opening, and simultaneously output the control signal for decreasing the valve opening and issue an early warning message if it is determined that the pre-valve pressure value is lower than the pre-valve minimum operating pressure threshold.
Preferably, the power supply unit is a storage battery.
Preferably, a communicated adjusting branch is arranged between the front end and the rear end of the main valve, the pilot valve assembly is arranged in the adjusting branch and comprises a pilot valve, a transmission rod and a speed reducing motor, the signal input end of the speed reducing motor is connected with the signal output end of the MCU, a rotating shaft of the speed reducing motor, the transmission rod and a valve rod of the pilot valve are coaxially arranged, one end of the transmission rod is fixedly connected with the rotating shaft of the speed reducing motor, the other end of the transmission rod is in threaded transmission connection with the valve rod of the pilot valve, and when the speed reducing motor operates, the valve rod of the pilot valve axially stretches along the self to adjust the opening degree of the pilot valve.
Preferably, a magnetoelectric encoder is arranged on the periphery of the transmission rod, and the output end of the magnetoelectric encoder is connected with a threshold monitoring unit;
the magnetoelectric encoder is used for acquiring the rotation angle of the speed reducing motor;
and the threshold monitoring unit is used for converting the rotation angle of the speed reducing motor into a pilot valve stroke value of the pilot valve assembly.
Preferably, magnetoelectric encoder is including discrete magnetic sheet end and response end, magnetic sheet end fixed mounting is in the periphery of transfer line, the response end is fixed to be set up outside the transfer line, the output of response end with threshold value monitoring unit's signal input part signal connection works as when the transfer line is rotatory, response end induction magnetic field changes and converts the alternating signal of telecommunication into, the phase angle of alternating signal of telecommunication is gear motor's rotation angle promptly.
Preferably, a manual valve is arranged in the adjusting branch, and the manual valve is a ball valve.
Preferably, the main valve is provided with a mounting box, the control assembly and the pilot valve assembly are integrated in the mounting box, and a flow passage of the pilot valve penetrates through the mounting box and is communicated with the regulating branch.
Preferably, an emergency stop button is arranged on the mounting box and is in signal connection with the MCU.
The utility model has the advantages that: the utility model provides a pair of long-range pressure regulating valve control system communicates with high in the clouds server through communication module, can be long-rangely to this control system setting system parameter and with real-time monitoring data and early warning information upload reach the high in the clouds. The pressure monitoring device has the capability of monitoring the water supply pressure operation of a pipe network, automatically collects the pressure data before and after the valve, forms a pressure operation curve before the valve and a pressure operation curve after the valve, and is convenient for operators to monitor the operation condition of the pipe network. Operating personnel can be according to the pipe network pressure operation condition, and wireless long-range target requirement that sets up, and the system independently carries out intelligent self-adaptation pressure adjustment, avoids appearing the main pipe network and supplies water the decompression, and large tracts of land influences water supply pressure, and the water pressure is supplied with to the water unit stability simultaneously, avoids high pressure flood irrigation, practices thrift the water supply cost.
Drawings
Fig. 1 is a block diagram of the control system provided by the present invention;
FIG. 2 is a schematic view of the structure of the regulating valve of the present invention;
FIG. 3 is an external view of the control system of the present invention;
fig. 4 is a schematic diagram of the internal structure of the control system of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the automatic control valve comprises a valve body, 2, a valve clack, 3, a valve rod, 4, a membrane, 5, a return spring, 6, a valve cover, 7, a manual valve, 8, a pilot valve assembly, 801, a speed reducing motor, 802, a transmission rod, 803, a pilot valve, 9, a pressure acquisition device, 10, a self-operated power generation assembly, 11, a control assembly, 1101, an MCU, 1102, a pressure acquisition unit, 1103, a threshold monitoring unit, 1104, a motor control unit, 1105, a storage battery, 1106, an emergency stop button, 12, a communication module, 13 and a mounting box.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model provides a remote air-vent valve control system sets up on the main valve, still is equipped with the pilot valve subassembly 8 of control main valve aperture on the main valve. The valve body structure of main valve can refer to the valve body structure that industry standard "CJ/T219-2005 hydraulic control valve" recommends, as shown in FIG. 2, the specific structure of valve body of main valve is not the innovation point of the utility model, and the specific structure of valve body is not repeated here.
As shown in the structural block diagram of the system of fig. 1 and the schematic diagram of the structural composition of fig. 2, the control system of the present invention includes at least two pressure collecting devices 9 respectively disposed at the front end and the rear end of the main valve, a control assembly 11 and a communication module 12 disposed on the main valve, and a self-operated power generation assembly 10 disposed in the flow channel of the pilot valve assembly 8; the output end of the self-operated power generation assembly 10 is connected with the power input end of the control assembly 11, a plurality of signal input ends of the control assembly 11 are respectively connected with the signal output ends of each pressure acquisition device 9 and the pilot valve assembly 8, and the signal output end of the control assembly 11 is connected with the signal input end of the pilot valve assembly 8; the communication module 12 is in communication connection with the control component 11;
the self-operated power generation assembly 10 is used for converting the kinetic energy of water flowing through the self-operated power generation assembly 10 into electric energy and supplying power to the control assembly 11;
the two pressure acquisition devices 9 are respectively used for acquiring a pre-valve pressure value and a post-valve pressure value of a main valve and sending the pre-valve pressure value and the post-valve pressure value to the control component 11;
the pilot valve assembly 8 is used for adjusting the opening of a main valve according to a control signal of the control assembly 11, acquiring a pilot valve stroke value of the pilot valve assembly 8 in the process of adjusting the opening of the main valve and feeding the pilot valve stroke value back to the control assembly 11;
the control component 11 is used for comparing the pre-valve pressure value, the pilot valve stroke value and the post-valve pressure value with a preset pre-valve minimum pressure operation threshold, a preset pilot valve stroke threshold upper limit, a preset pilot valve stroke threshold lower limit and a preset post-valve pressure threshold respectively, outputting early warning information according to the comparison result and outputting a control signal and early warning information to the pilot valve component 8; the upper limit of the travel threshold value of the pilot valve is the corresponding travel value of the pilot valve when the opening degree of the valve reaches the maximum, and the lower limit of the travel threshold value of the pilot valve is the corresponding travel value of the pilot valve when the opening degree of the valve decreases to the minimum;
the communication module 12 is used for realizing remote communication between the control component 11 and the cloud.
Specifically, the system operation parameters of the control component 11 can be set remotely at the cloud through a network, and data interaction between the control system and the cloud can also be realized through the communication module 12, for example, real-time monitoring data and early warning information are uploaded, daily reporting state data of the device is reported and stored in a cloud database, the monitoring data and the device state can be displayed on a cloud software interface, and follow-up query and call are facilitated. The device target operation instruction parameters can be issued at the cloud, and the communication module 12 sets the control component 11 after receiving the cloud instruction. The control assembly 11 receives the operation instruction through the communication module 12 to control the equipment, and completes the operation protection before the valve (preventing the pressure from releasing before the valve) and the safety protection after the valve (preventing the pipe explosion due to the overlarge pressure after the valve), and simultaneously performs the fault early warning.
The control system has the capability of monitoring the water supply pressure operation of a pipe network, automatically collects the pressure data before and after the valve, forms a pressure operation curve before the valve and a pressure operation curve after the valve, and is convenient for operators to monitor the operation condition of the pipe network. The operating personnel can be according to the pipe network pressure operation condition, and wireless long-range target requirement that sets up, thereby the system is independently through carrying out pressure control to the main valve aperture regulation, avoids appearing the main pipe network and supplies water decompression, and large tracts of land influences the water supply pressure, and the while is supplied with to the stable water pressure of water unit, avoids high pressure flood irrigation, practices thrift the water supply cost.
In the process of adjusting the main valve, when water flows through the self-operated power generation assembly 10, the water is pushed to run, and the kinetic energy of the water is converted into electric energy for providing a working power supply for the electric elements of the system.
This embodiment has adopted four pressure acquisition devices 9, including two electron pressure transmitter and two shockproof manometer, set up an electron pressure transmitter respectively before the valve and behind the valve, still set up a shockproof manometer respectively simultaneously for pressure value and valve after to the valve pressure value monitors respectively. The electronic pressure transmitter sends real-time pressure data before and after the valve to the control assembly 11, and the shockproof pressure gauge can be used for visually observing the pressure data before and after the valve when an operator patrols at the valve. The self-operated power generation assembly 10 adopts a micro water wheel type generator in the prior art, is hermetically arranged in a flow channel of the pilot valve assembly 8, pushes the self-operated power generation assembly 10 to rotate and generate power when water flows through the self-operated power generation assembly 10, converts mechanical energy into electric energy, and then provides a working power supply for power utilization elements of the whole control system by the generated electric energy. The arrangement ensures that the control system does not need additional power supply, and is energy-saving and environment-friendly.
The pressure before and after the valve is respectively monitored, and then the operation pressure of the urban water pipe network before the valve is protected by corresponding to the opening of the regulating valve through the pilot valve assembly 8, so that the situations of insufficient water pressure, undervoltage and no water of other water users in the coverage range of the main pipe network are prevented; meanwhile, stable water supply of the rear branch of the valve is guaranteed.
In a possible embodiment, as shown in fig. 1, the control assembly 11 includes an MCU1101, a pressure collecting unit 1102, a threshold monitoring unit 1103, a motor control unit 1104 and a power supply unit, wherein signal output terminals of the two pressure collecting devices 9 are respectively connected to two signal input terminals of the pressure collecting unit 1102, a signal output terminal of the pilot valve assembly 8 is connected to a signal input terminal of the threshold monitoring unit 1103, signal output terminals of the pressure collecting unit 1102 and the threshold monitoring unit 1103 are respectively connected to a signal input terminal of the MCU1101, a signal output terminal of the MCU1101 is connected to a signal input terminal of the motor control unit 1104, and an output terminal of the motor control unit 1104 is connected to a signal input terminal of the pilot valve assembly 8; the output end of the self-operated power generation assembly 10 is connected with the input end of a power supply unit 1102, and the MCU1101, the pressure acquisition unit 1102, the threshold monitoring unit 1103 and the motor control unit 1104 are respectively in power supply connection with the output end of the power supply unit;
the pressure acquisition unit 1102 is used for acquiring a pre-valve pressure value and a post-valve pressure value and outputting the pre-valve pressure value and the post-valve pressure value to the MCU 1101;
the threshold monitoring unit 1103 is used for acquiring a pilot valve stroke value of the pilot valve assembly 8 and outputting the pilot valve stroke value to the MCU 1101;
the system is connected with a cloud server through a communication module 12, and a valve front lowest operation pressure threshold value, a pilot valve stroke threshold value and a valve rear pressure threshold value are set in the MCU1101 through remote control; the MCU1101 is configured to compare the pre-valve pressure value with a preset pre-valve minimum operating pressure threshold, output a control signal to the pilot valve assembly 8 to decrease the valve opening when the pre-valve pressure value is lower than the pre-valve minimum operating pressure threshold, and then compare the pilot valve stroke value with a preset lower pilot valve stroke threshold: when the stroke value of the pilot valve reaches the lower limit of the stroke threshold value of the pilot valve, the opening degree of the valve is minimum, and if the pressure value before the valve is still lower than the lowest running pressure threshold value before the valve, early warning information is sent out; when the pre-valve pressure value is not lower than the pre-valve minimum operating pressure threshold, comparing the post-valve pressure value with a post-valve pressure threshold: outputting a control signal to the pilot valve assembly to decrease the valve opening when the post-valve pressure value is greater than the post-valve pressure threshold; when the post-valve pressure value is smaller than the post-valve pressure threshold value, outputting a control signal for increasing the valve opening degree to the pilot valve assembly 8; when the stroke value of the pilot valve reaches the upper limit of the stroke threshold value of the pilot valve, the opening degree of the valve is maximum, and if the pressure value after the valve is still smaller than the lower limit threshold value of the pressure after the valve, early warning information is sent out;
the motor control unit 1104 is used for controlling the action of the pilot valve assembly 8 according to a control signal sent by the MCU1101 so as to adjust the opening of the valve;
the power supply unit is used for storing the electric energy of the self-operated power generation assembly 10 and providing a working power supply for the electric elements of the device.
In this embodiment, the MCU1101 may be implemented by a single chip microcomputer and peripheral circuits thereof, such as an STM32 series single chip microcomputer. The result that the opening degree of the valve is required to be increased or decreased can be obtained by simply comparing the real-time sampling data with the preset threshold value, and a corresponding control signal is sent out. The MCU1101 compares the pre-valve pressure value with a preset pre-valve minimum operation pressure threshold value, and in order to protect the operation pressure of the urban water pipe network in front of the valve, the urban water pipe network is protected to operate above the pre-valve minimum operation pressure threshold value all the time, so that the situation that the water pressure of other water users in the coverage range of the main pipe network is insufficient, and the situation of undervoltage and no water occurs is prevented. On the premise of ensuring the normal pressure value before the valve, the stable water supply in the water branch behind the valve needs to be ensured, for example, the water supply pressure behind the valve is always kept to be the set pressure threshold behind the valve. And comparing the valve back pressure value with a valve back pressure threshold value, opening the valve when the valve back pressure value is larger, and opening the valve when the valve back pressure value is smaller until the valve back pressure value is consistent with the valve back pressure threshold value. In the process of adjusting the pressure behind the valve, the pressure before the valve is always required to be not lower than the lowest operation pressure threshold before the valve, namely, the pipeline pressure before the valve is required to be guaranteed preferentially, and then the water supply pressure behind the valve is guaranteed.
It is worth mentioning that the pilot valve stroke threshold is an interval value in which the pilot valve 803 operates when the valve opening degree is adjusted for the pilot valve 803. To protect the water usage branch line behind the valve, preventing the water pressure behind the valve from being too high and causing a tube burst, the pilot valve 803 may not be fully opened when the travel of the pilot valve 803 reaches the upper threshold of the pilot valve travel, e.g., the valve opening reaches 80% of the valve full opening. Similarly, when a situation that a complete water cut is not allowed exists in the water using branch behind the valve, for example, a serious consequence may be caused by a water cut of some enterprises, at this time, the valve opening corresponding to the lower limit of the pilot valve stroke threshold may not be completely closed, for example, set to 30% of the valve opening, so that even if the stroke value of the pilot valve 803 reaches the lower limit of the pilot valve stroke threshold, the valve still keeps a part of water flowing out. The arrangement protects the operation pressure of the urban water pipe network before the valve, and prevents the situations of insufficient water pressure, under-pressure and no-water of other water users in the coverage area of the main pipe network; meanwhile, the back branch of the valve is guaranteed to stably supply water, namely, the branch pipe user is prevented from excessively using water to cause pressure relief of a main pipe on the premise of guaranteeing the water use (incomplete water cut-off) of the branch pipe user.
In a possible embodiment, the MCU1101 is further configured to stop outputting the control signal for increasing the valve opening degree and simultaneously output the control signal for decreasing the valve opening degree and issue an early warning message when the pre-valve pressure value is determined to be lower than the pre-valve minimum operating pressure threshold value during the process of increasing the valve opening degree.
It can be understood that this setting is in order to be prior to the regulation and control of valve back pressure value with the regulation and control of valve front pressure value, no matter what kind of condition promptly, should preferentially ensure not under-voltage before the valve, just the steady voltage water supply of guarantee branch road secondly to prevent that other water user water pressure in the main pipe network coverage is not enough, appear under-voltage, anhydrous condition.
In one possible embodiment, the power supply unit is a battery 1105. The output end of the self-operated power generation assembly 10 is connected with the input end of the storage battery 1105, and the output end of the storage battery 1105 is used as the power output end of the power supply unit and is used for providing working power supply for the power utilization elements of the control system. Here, the storage battery 1105 stores the excess electric power generated by the self-operated power generation module 10, and satisfies the power consumption demand of the control module 11 in the valve closed state.
In a possible embodiment, a regulating branch is provided between the front end and the rear end of the main valve, a self-operated power generation assembly 10 is provided in the regulating branch, the pilot valve assembly 8 is also provided in the regulating branch, when the water flow passage of the pilot valve assembly 8 is opened, water flows through the regulating branch, and the self-operated power generation assembly 10 is operated to generate power. The pilot valve assembly 8 comprises a pilot valve 803, a transmission rod 802 and a speed reducing motor 801, and as shown in the structural diagrams of fig. 3 to 4, a valve rod of the pilot valve 803 is in transmission connection with an output shaft of the speed reducing motor 801 through the transmission rod 802. Specifically, a signal input end of the speed reducing motor 801 is connected with a signal output end of the MCU1101, a rotating shaft of the speed reducing motor 801, a transmission rod 802 and a valve rod of the pilot valve 803 are coaxially arranged, one end of the transmission rod 802 is fixedly connected with the rotating shaft of the speed reducing motor 801, the other end of the transmission rod 802 is in threaded transmission connection with the valve rod of the pilot valve 803, and when the speed reducing motor 801 operates, the valve rod of the pilot valve 803 axially extends and retracts along itself to adjust the opening degree of the pilot valve 803.
The control assembly 11 controls the operation of the speed reducing motor 801, the speed reducing motor 801 drives the transmission rod 802 to rotate, the transmission rod 802 and the valve rod of the pilot valve 803 are in threaded transmission in a manner similar to screw connection, the rotation motion of the transmission rod 802 can be converted into the linear motion of the valve rod of the pilot valve 803, the valve rod of the pilot valve 803 is made to perform telescopic motion along the self axial direction, the channel of the pilot valve 803 is opened or closed in the telescopic process, so that the opening degree of the pilot valve 803 is adjusted, and the opening degree of the pilot valve 803 can control the opening degree of the main valve, so that the control of the main valve is realized through the pilot valve assembly 8.
More specifically, the pilot valve 803 of the present embodiment employs a needle valve, and the needle valve closes or opens a passage in the needle valve by expansion and contraction of its valve stem. The end of the transmission rod 802, which is matched with the valve rod of the pilot valve 803, is provided with a sleeve, a hexagonal slide hole is arranged in the sleeve, a hexagonal bolt is fixedly arranged at the end of the valve rod of the pilot valve 803, the threaded end of the hexagonal bolt is hermetically connected with the valve body 1 of the needle valve through threads, and the hexagonal head end of the hexagonal bolt is in sliding fit with the sleeve in the sleeve. When the driving rod 802 rotates, the driving rod drives the hexagon bolt and the valve rod of the pilot valve 803 to rotate, and the valve rod of the pilot valve 803 extends and retracts in the valve body 1 of the pilot valve 803, so that the channel in the pilot valve 803 is cut off or opened, and the opening degree of the pilot valve 803 is controlled. During rotation of the driving rod 802, as the valve stem of the pilot valve 803 moves in its axial direction, the hex head end of the hex bolt slides within the hex slide hole of the driving rod 802. Thus, the rotation of the reduction motor 801 is converted into the linear movement of the valve rod of the pilot valve 803, and the purpose of adjusting the opening degree of the pilot valve 803 by operating the reduction motor 801 is achieved.
In a possible implementation manner, a magnetoelectric encoder is arranged on the periphery of the driving rod 802, and the output end of the magnetoelectric encoder is connected with the threshold monitoring unit 1103;
the magnetoelectric encoder is used for acquiring the rotation angle of the speed reducing motor 801;
the threshold monitoring unit 1103 is configured to convert the rotation angle of the speed reduction motor 801 into a pilot valve stroke value of the pilot valve assembly 8.
It can be understood that, when the reduction motor 801 rotates once, the magnetoelectric encoder induces the change of the alternating electric field in one period, and the reduction motor 801 rotates continuously, the magnetoelectric encoder counts the operation revolution number of the reduction motor 801, the operation revolution number of the reduction motor 801 corresponds to the thread revolution number of the valve rod of the pilot valve 803, and the stroke value of the pilot valve 803 can be calculated through the thread revolution number of the valve rod of the pilot valve 803 and the thread pitch of the adjacent threads. For example, if the number of rotations of the reduction motor 801 is detected to be 3 and the pitch of the stem of the pilot valve 803 is known to be 2 mm in advance when the valve opening of the main valve is adjusted to be large, the pilot valve stroke value is calculated in such a manner that 2 mm × 3 turns become 6 mm. The rotation angle of the speed reducing motor 801 is monitored through a magnetoelectric encoder, and an accurate stroke value of the pilot valve can be obtained through calculation.
In a possible implementation, magnetoelectric encoder includes discrete magnetic sheet end and response end, magnetic sheet end fixed mounting is in the periphery of transfer line 802, the response end is fixed to be set up outside transfer line 802, the output of response end with threshold value monitoring unit 1103's signal input part signal connection works as when the transfer line is rotatory 802, response end induction magnetic field changes and converts alternating signal, alternating signal's phase angle is the rotation angle of gear motor 801 promptly.
In a possible embodiment, a manual valve 7 is provided in the regulating branch, and the manual valve 7 is a ball valve.
As previously mentioned, the pilot valve travel threshold is set such that it does not completely shut off the main valve, considering that there is a situation where water cannot be completely shut off for the user after the valve. When the regulating valve needs to be completely closed, a ball valve can be arranged in the regulating branch as a manual valve 7, and the manual valve 7 is closed so as to completely close the passage between the valve front and the valve rear and cut off the water using branch. The manual valve 7 is used as an aid for adjusting the pilot valve 803 in the branch, so that it can be adjusted manually when it is necessary to close the main valve completely in an unconventional situation.
In a possible embodiment, a mounting box 13 is provided on the main valve, the control assembly 11 is integrated with the pilot valve assembly 8 in the mounting box 13, and the flow passage of the pilot valve 803 extends through the mounting box 13 and communicates with the regulating branch.
The setting of mounting box 13 firstly provides electrical insulation protection and dustproof protection for this control system's electrified component, secondly does benefit to the miniaturization and the integration of system, the follow-up maintenance of being convenient for.
In a possible implementation manner, an emergency stop button 1106 is arranged on the mounting box 13, the emergency stop button 1106 is mounted on the surface of the mounting box 13, and the emergency stop button 1106 is in signal connection with the MCU. When an emergency situation occurs and the control system of the regulating valve needs to be stopped immediately, an operator can press the emergency stop button 1106 to input an emergency stop signal to the MCU1101, and the control system stops operation immediately to adjust the opening degree of the main valve to the set minimum opening degree.
In a possible embodiment, the deceleration motor 801 is monitored for stalling during the valve opening adjustment, and whether the deceleration motor 801 stalls can be confirmed by whether the feedback pilot valve stroke value changes during the output of the control signal for adjusting the valve opening. If the speed reducing motor 801 is locked, in the process of adjusting the opening degree of the valve, when the pre-valve pressure value or the post-valve pressure value does not reach the expected value, the stroke value of the pilot valve does not continuously change, which indicates that an equipment fault occurs, at this time, the instruction of adjusting the opening degree of the valve cannot be completed, and the control component 11 sends out early warning information to the cloud server through the communication module 12. The case where an instruction cannot be completed also includes, for example: when the opening degree of the valve is adjusted to the set maximum opening degree, the pressure value behind the valve is still smaller than the pressure threshold behind the valve; and when the valve opening is adjusted to the set minimum opening, the pre-valve pressure value is still smaller than the pre-valve minimum operation pressure threshold value, and the like. However, when the instruction cannot be completed, the communication module 12 sends the early warning information to the cloud server to prompt the operator to find the cause of the fault on site as soon as possible, and to complete the maintenance to recover the normal water supply of the water supply pipeline. In the normal control process of the valve, an early warning can be sent when abnormality occurs, similarly, when the valve is not in a normal working state, for example, when the valve is subjected to self-checking, if abnormality is found, the early warning can be sent, when the cloud server receives early warning information, whether a control process or a valve self-checking process is sent when the valve is in a normal working state needs to be judged, and the state where the valve is located is added into the early warning information to carry out early warning.
The principle of the regulating valve conduction of the embodiment is as follows:
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A remote pressure regulating valve control system is arranged on a main valve, and is also provided with a pilot valve assembly (8) for controlling the opening degree of the main valve, and is characterized in that the control system comprises at least two pressure acquisition devices (9) respectively arranged at the front end and the rear end of the main valve, a control assembly (11) and a communication module (12) arranged on the main valve, and a self-operated power generation assembly (10) arranged in a flow channel of the pilot valve assembly (8); the output end of the self-operated power generation assembly (10) is connected with the power input end of a control assembly (11), a plurality of signal input ends of the control assembly (11) are respectively connected with the signal output ends of each pressure acquisition device (9) and the pilot valve assembly (8), and the signal output end of the control assembly (11) is connected with the signal input end of the pilot valve assembly (8); the communication module (12) is in communication connection with the control component (11);
the self-operated power generation assembly (10) is used for converting the kinetic energy of water into electric energy and supplying power to the control assembly (11);
the pressure acquisition devices (9) are used for respectively acquiring a pre-valve pressure value and a post-valve pressure value;
the pilot valve component (8) is used for adjusting the opening of a main valve according to a control signal of the control component (11), acquiring a pilot valve stroke value when the opening of the main valve is adjusted, and transmitting the pilot valve stroke value to the control component (11);
the control component (11) is used for comparing the pre-valve pressure value, the pilot valve stroke value and the post-valve pressure value with a preset pre-valve minimum pressure operation threshold value, a preset pilot valve stroke threshold value upper limit, a preset pilot valve stroke threshold value lower limit and a preset post-valve pressure threshold value respectively, outputting early warning information according to the comparison result and outputting a control signal to the pilot valve component (8);
the communication module (12) is used for realizing remote communication between the control component (11) and the cloud.
2. The remote pressure regulating valve control system according to claim 1, characterized in that the control assembly (11) comprises a MCU (1101), a pressure acquisition unit (1102), a threshold monitoring unit (1103), a motor control unit (1104) and a power supply unit, the signal output ends of the two pressure acquisition devices (9) are respectively connected with the two signal input ends of the pressure acquisition unit (1102), the signal output end of the pilot valve component (8) is connected with the signal input end of the threshold value monitoring unit (1103), the signal output end of the pressure acquisition unit (1102) and the signal output end of the threshold monitoring unit (1103) are respectively connected with the signal input end of the MCU (1101), the signal output end of the MCU (1101) is connected with the signal input end of the motor control unit (1104), the output end of the motor control unit (1104) is connected with the signal input end of the pilot valve assembly (8); the output end of the self-operated power generation assembly (10) is connected with the input end of a power supply unit, and the MCU (1101), the pressure acquisition unit (1102), the threshold monitoring unit (1103) and the motor control unit (1104) are respectively in power supply connection with the output end of the power supply unit;
the pressure acquisition unit (1102) is used for acquiring a pre-valve pressure value and a post-valve pressure value output by the pressure acquisition device (9);
the threshold value monitoring unit (1103) is used for acquiring a pilot valve stroke value of the pilot valve assembly (8);
the MCU (1101) is used for comparing the pre-valve pressure value with a preset pre-valve minimum operation pressure threshold value, when the pre-valve pressure value is lower than the pre-valve minimum operation pressure threshold value, outputting a control signal for reducing the valve opening degree to the guide valve component (8), and then comparing the guide valve stroke value with a preset lower limit of a guide valve stroke threshold value: when the stroke value of the pilot valve reaches the lower limit of the stroke threshold value of the pilot valve, the opening degree of the valve is minimum, and if the pressure value before the valve is still lower than the lowest running pressure threshold value before the valve, early warning information is sent out; when the pre-valve pressure value is not lower than the pre-valve minimum operating pressure threshold, comparing the post-valve pressure value with a post-valve pressure threshold: when the valve post-pressure value is larger than the valve post-pressure threshold value, outputting a control signal for reducing the valve opening degree to the guide valve component (8); when the valve post-pressure value is smaller than the valve post-pressure threshold value, outputting a control signal for increasing the valve opening degree to the guide valve component (8); when the stroke value of the pilot valve reaches the upper limit of the stroke threshold value of the pilot valve, the opening degree of the valve is maximum, and if the pressure value after the valve is still smaller than the lower limit threshold value of the pressure after the valve, early warning information is sent out;
the motor control unit (1104) is used for controlling the action of the pilot valve assembly (8) according to a control signal sent by the MCU (1101) so as to adjust the opening of the valve;
the power supply unit is used for storing the electric energy of the self-operated power generation assembly (10) and providing a working power supply for the electric elements of the device.
3. The remote pressure regulating valve control system according to claim 2, characterized in that the MCU (1101) is further configured to stop outputting the control signal for increasing the valve opening and simultaneously output the control signal for decreasing the valve opening and issue an early warning message if the pre-valve pressure value is determined to be lower than the pre-valve minimum operating pressure threshold value during the process of increasing the valve opening.
4. A remote pressure regulating valve control system according to claim 2, characterized in that said power supply unit is a battery (1105).
5. The remote pressure regulating valve control system according to claim 2, wherein a communicating regulating branch is provided between the front end and the rear end of the main valve, the pilot valve assembly (8) is arranged in the regulating branch, the pilot valve assembly (8) comprises a pilot valve (803), a transmission rod (802) and a speed reducing motor (801), the signal input end of the speed reducing motor (801) is connected with the signal output end of the MCU (1101), the rotating shaft of the speed reducing motor (801), the transmission rod (802) and the valve rod of the pilot valve (803) are coaxially arranged, one end of the transmission rod (802) is fixedly connected with a rotating shaft of the reducing motor (801), the other end of the driving rod (802) is in transmission connection with a valve rod of the pilot valve (803) through threads, when the speed reducing motor (801) operates, a valve rod of the pilot valve (803) extends and contracts along the self axial direction to adjust the opening degree of the pilot valve (803).
6. The remote pressure regulating valve control system according to claim 5, characterized in that a magneto-electric encoder is arranged on the periphery of the transmission rod (802), and the output end of the magneto-electric encoder is connected with a threshold value monitoring unit (1103);
the magnetoelectric encoder is used for acquiring the rotation angle of the speed reducing motor (801);
the threshold value monitoring unit (1103) is used for converting the rotation angle of the speed reducing motor (801) into a pilot valve stroke value of the pilot valve assembly (8).
7. The remote pressure regulating valve control system according to claim 6, wherein the magnetoelectric encoder comprises a discrete magnetic sheet end and an induction end, the magnetic sheet end is fixedly installed on the periphery of the transmission rod (802), the induction end is fixedly arranged outside the transmission rod (802), the output end of the induction end is in signal connection with the signal input end of the threshold monitoring unit (1103), when the transmission rod (802) rotates, the induction end induces the change of the magnetic field and converts the change into an alternating electric signal, and the phase angle of the alternating electric signal is the rotation angle of the speed reducing motor (801).
8. A remote pressure regulating valve control system according to claim 5, characterized in that a manual valve (7) is arranged in the regulating branch, and the manual valve (7) is a ball valve.
9. A remote pressure regulating valve control system according to claim 5, characterized in that a mounting box (13) is provided on the main valve, the control assembly (11) and the pilot valve assembly (8) are integrated in the mounting box (13), and the flow passage of the pilot valve (803) extends through the mounting box (13) and communicates with the regulating branch.
10. The remote pressure regulating valve control system according to claim 9, characterized in that an emergency stop button (1106) is arranged on the mounting box (13), and the emergency stop button (1106) is in signal connection with the MCU (1101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120964239.6U CN214699226U (en) | 2021-05-07 | 2021-05-07 | Remote pressure regulating valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120964239.6U CN214699226U (en) | 2021-05-07 | 2021-05-07 | Remote pressure regulating valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214699226U true CN214699226U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120964239.6U Active CN214699226U (en) | 2021-05-07 | 2021-05-07 | Remote pressure regulating valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214699226U (en) |
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2021
- 2021-05-07 CN CN202120964239.6U patent/CN214699226U/en active Active
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