CN104865983A - Fuel gas transmission and distribution intelligent pressure regulating station and control method thereof - Google Patents
Fuel gas transmission and distribution intelligent pressure regulating station and control method thereof Download PDFInfo
- Publication number
- CN104865983A CN104865983A CN201510120904.2A CN201510120904A CN104865983A CN 104865983 A CN104865983 A CN 104865983A CN 201510120904 A CN201510120904 A CN 201510120904A CN 104865983 A CN104865983 A CN 104865983A
- Authority
- CN
- China
- Prior art keywords
- pressure
- pressure regulator
- controller
- outlet passageway
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a fuel gas transmission and distribution intelligent pressure regulating station and a control method thereof. The fuel gas transmission and distribution intelligent pressure regulating station comprises a box body; a gas incoming pipeline, a main pressure regulating pipeline, an auxiliary pressure regulating pipeline, two sets of pneumatic pressure regulating mechanisms, a gas outgoing pipeline, a controller and an anti-explosion box are arranged in the box body; the gas incoming passage of the first pneumatic pressure regulating mechanism is connected with the gas outgoing end of the main pressure regulating pipeline through a filter; the gas incoming passage of the second pneumatic pressure regulating mechanism is connected with the gas outgoing end of the auxiliary pressure regulating pipeline through a filter; the gas incoming end of the gas outgoing pipeline is connected with the gas outgoing passage of the first pneumatic pressure regulating mechanism and the gas outgoing passage of the second pneumatic pressure regulating mechanism; the controller is communicated with the first pneumatic pressure regulating mechanism and the second pneumatic pressure regulating mechanism respectively; a power source module is arranged in the anti-explosion box; and the power source module is connected with the controller. With the fuel gas transmission and distribution intelligent pressure regulating station and the control method thereof adopted, pressure regulating, flow limiting, monitoring, control, management, and software and hardware can be integrated; and remote dynamic regulation, monitoring and management of pressure and flow rate at the outlet of the pressure regulating station and various kinds of working states of the pressure regulating station can be realized.
Description
Technical field
The present invention relates to gas ductwork neighborhood, more particularly, relate to a kind of gas transmission and distribution intelligent pressure regulating station and control method thereof.
Background technology
In recent years, along with the development in market and improving constantly of user's request, gas ductwork and gas pressure regulating station are step by step towards intelligentized future development.So-called intellectuality refers to and is mainly reflected in the many aspects such as Monitoring and Controlling, safe and efficient, dynamic management.Voltage regulating station ubiquity traditional at present like this some problems: the top hole pressure of such as voltage regulating station can not remote adjustment, thus the pipe network in the downstream made is using gas peak period, and ductwork pressure is low, cannot meet gas consumption requirement; The gas-use low peak period, ductwork pressure is high, cause pipe leakage to increase, production and marketing difference increase.Again such as when needing the industrial user carrying out flow restriction to carry out flow restriction transformation, first will transform the pipeline structure of voltage regulating station, then install special flow control system additional, therefore not only quantities is large, and capital intensive.Filter differential pressure, stop valve on off state, gas leakage, cabinet door on off state etc. cannot be carried out detect by centering area of low pressure voltage regulating station for another example, thus cause not understanding the running status of voltage regulating station.The monitor and forecast of current high pressure and mesolow region voltage regulating station is realized indirectly by the exchanges data between RTU/PLC, and only data are sent to pipe network SCADA Surveillance center, and mobile terminal can not be mail to as mobile phone etc., therefore cannot realize dynamic monitoring whenever and wherever possible.In addition, once work pressure regulation road pressure regulator fault causes this road quick action emergency valve to cut off, pressure regulation road for subsequent use pressure regulator starts automatically, but top hole pressure lower than pressure during work pressure regulation road voltage regulator operation, can reduce the water conveyance and distribution capacity of downstream pipe network further.
Summary of the invention
For the defect existed in prior art, the object of this invention is to provide a kind of gas transmission and distribution intelligent pressure regulating station and control method thereof.
For achieving the above object, the present invention adopts following technical scheme:
According to an aspect of the present invention, provide a kind of gas transmission and distribution intelligent pressure regulating station, comprise casing, comprise in described casing:
Air inlet pipeline;
Main pressure regulator pipeline, its inlet end is connected with the outlet side of described air inlet pipeline;
Secondary pressure regulation pipeline, its inlet end is connected with the outlet side of described air inlet pipeline;
Pneumatic pressure regulating device, its quantity is 2 covers, and wherein, the inlet channel of the first pneumatic pressure regulating device is connected by the outlet side of filtrator with described main pressure regulator pipeline; The inlet channel of the second pneumatic pressure regulating device is connected by the outlet side of filtrator with described secondary pressure regulation pipeline;
Outlet pipe, its inlet end is connected with the outlet passageway of described first pneumatic pressure regulating device and the outlet passageway of the second pneumatic pressure regulating device respectively;
Controller, it is connected with described first pneumatic pressure regulating device and the second pneumatic pressure regulating device respectively;
Explosion-proof box, is provided with power module in it, and described power module is connected with described controller.
Described pneumatic pressure regulating device comprises:
Pressure regulator, it comprises the head with pressure regulating cavity, is provided with pressure regulator diaphragm in described head, and head is divided into head epicoele and head cavity of resorption by described pressure regulator diaphragm, and the inlet channel in described pressure regulator is connected with filtrator; Outlet passageway in described pressure regulator is connected with described outlet pipe; Inlet channel in described pressure regulator and outlet passageway detect interface and top hole pressure respectively and detect interface and be connected with the corresponding intake pressure in described controller;
Valve position transmitter, it comprises shell, be provided with valve position feeler and displacement transducer in described shell, the lower end of described valve position feeler from the top of described head stretch into head epicoele and with pressure regulator diaphragm above offset, valve position feeler is synchronized with the movement with the spool in described pressure regulator; Described valve position feeler is connected with displacement transducer, and the valve seat opening signal in pressure regulator can be converted to can for the resistance signal of controller identification; Institute's displacement sensors is connected with described controller;
Pneumatic control unit, it is connected with described controller and described head cavity of resorption respectively.
Described pneumatic control unit comprises:
Control pilot valve, it comprises pilot valve epicoele and pilot valve cavity of resorption, and described pilot valve epicoele is connected with the outlet passageway in described pressure regulator; The side opening of described pilot valve cavity of resorption is provided with air admission hole; Gas outlet in described control pilot valve is connected with described head cavity of resorption by connecting pipe;
Control pilot valve preregulator, one intake interface is connected with the inlet channel in described pressure regulator, and another intake interface is connected with the outlet passageway in described pressure regulator; Interface of giving vent to anger in described control pilot valve preregulator is connected with the air intake opening of described control pilot valve;
Pneumatic adjustment preregulator, one intake interface is connected with the interface of giving vent to anger in described control pilot valve preregulator, and another intake interface is connected with the outlet passageway in described pressure regulator;
Air inlet electromagnetic valve, its intake interface is connected with the interface of giving vent to anger in described pneumatic adjustment preregulator; Described air inlet electromagnetic valve is also connected with described controller;
Gas-holder, its air intake opening is connected with the interface of giving vent to anger of described air inlet electromagnetic valve, and its gas outlet is connected with the air admission hole of described pilot valve cavity of resorption side;
Give vent to anger solenoid valve, its intake interface is connected with the air admission hole of described pilot valve cavity of resorption side, described in solenoid valve of giving vent to anger also be connected with described controller.
The bottom surface of described pressure regulator is also provided with quick action emergency valve, and described quick action emergency valve is also connected with described controller.
Also bypass line is provided with between described air inlet pipeline and described outlet pipe.
Also be provided with signal acquisition module and communication module in described explosion-proof box, described signal acquisition module is connected with described controller and communication module respectively.
According to a further aspect in the invention, additionally provide a kind of control method of gas transmission and distribution, the pressure controlling step of the main pressure regulator pipeline in its this control method and secondary pressure regulation pipeline is:
A. the step of minimum guarantee pressure is set, namely by regulating the minimum pressure of the minimum permission of the outlet passageway of the pressure determination pressure regulator of the setting spring in pilot valve;
B. regulate the step of the outlet passageway pressure of pressure regulator, namely in controller, preset the outlet passageway force value of pressure regulator, this value is also adjusted to the outlet passageway force value of pressure regulator by the outlet passageway force value of controller Real-time Collection pressure regulator;
That is: if when the outlet passageway force value of the pressure regulator of Real-time Collection is less than the outlet passageway force value of default pressure regulator, controller opens air inlet electromagnetic valve, the pressure of pilot valve cavity of resorption is increased, causes the outlet passageway pressure of pressure regulator to be increased to the outlet passageway force value of default pressure regulator;
If when the outlet passageway force value of the pressure regulator of Real-time Collection is greater than the outlet passageway force value of default pressure regulator, controller opens is given vent to anger solenoid valve, make the pressure drop of pilot valve cavity of resorption, cause the outlet passageway pressure drop of pressure regulator to the outlet passageway force value presetting pressure regulator.
Wherein, the periodic regime of the outlet passageway force value of controller Real-time Collection pressure regulator be 10 seconds adjustable by 30 seconds; Controller opens give vent to anger cycle of solenoid valve or controller opens air inlet electromagnetic valve be 50 milliseconds adjustable to 500 milliseconds;
This is due in practical application at the scene, dissimilar pressure regulator has different regulation precision, in boosting and pressure reduction, ensure that system cloud gray model is mild than palpus simultaneously, namely do not allow to occur unexpected boosting and large periodic oscillation, otherwise superpressure overcurrent will the damage of relevant device in Zao Cheng voltage regulating station, even Hui Zaocheng voltage regulating station leaks, and stops air feed. so pressure regulation process entails should be steady, and high precision again.For the pipe network of complexity and the operating mode of change, only have and can be in harmonious proportion effective controling parameters and could meet actual working condition requirement targetedly.
Also comprise the switch step between main pressure regulator pipeline and secondary pressure regulation pipeline:
1) if after main pressure regulator pipeline is switched to secondary pressure regulation pipeline, first its top hole pressure can reduce, but subsequently can progressively automatic boosting, until reach main pressure regulator pipeline switch before operating pressure namely preset the outlet passageway force value of pressure regulator; Thus also maintain original air demand of voltage regulating station;
2) if be switched to main pressure regulator pipeline from secondary pressure regulation pipeline, first its top hole pressure can raise, but subsequently can progressively automatically step-down, until reach secondary pressure regulation pipeline switch before operating pressure namely preset the outlet passageway force value of pressure regulator, thus also maintain original air demand of voltage regulating station.
Described controller comprises following shaping modes for the outlet passageway pressure of pressure regulator:
1) pressurize pattern, namely the outlet passageway pressure of pressure regulator regulates according to the outlet passageway force value state of default pressure regulator, does not receive any remote pressure setting value simultaneously;
2) pressure regulation pattern, namely receives the outlet passageway force value of Long-distance Control to default pressure regulator and resets, and carries out the outlet passageway pressure adjustment of regulator according to this up-to-date pressure set points;
3) curve pressure regulation pattern, namely in controller, there is the outlet passageway force value of corresponding default pressure regulator inherence in several periods of one day, and controller regulates according to the outlet passageway pressure of above-mentioned curve to pressure regulator;
Mutually switch between above-mentioned pattern.
The flow control step also comprising main pressure regulator pipeline and secondary pressure regulation pipeline is: controller detects the flow value of pressure regulator in real time, when this value exceedes the pressure regulator Flow Limit definite value be preset in controller, according to flow restriction priority principle, and flow and top hole pressure also exist synchronized relation, controller can send step-down instruction, reduces below flow to the pressure regulator Flow Limit definite value preset by controlling exhaust solenoid valve exhaust.
Compared with prior art, a kind of gas transmission and distribution intelligent pressure regulating station adopting the present invention to propose and control method thereof, pressure regulator, filtrator, controller etc. and signals collecting, data processing, regulable control, data remote set can be integrated, on the basis of voltage regulation function, achieve the multiple intelligent functions such as flow measurement, top hole pressure remote adjustment, the long-range restriction of flow, remote monitoring, terminal user's contingency management, for realizing the intelligentized scheduling of natural gas pipe network and management provides a kind of practicable solution and technological means.
The invention has the advantages that this intelligent pressure regulating station integrates pressure regulation, current limliting, monitoring, control, management and software and hardware, the intelligent Remote Dynamic achieving voltage regulating station top hole pressure, flow and various duty regulates and remote monitoring and management.
Accompanying drawing explanation
Fig. 1 is the structural front view of embodiments of the invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the principle schematic of the pneumatic pressure regulating device in Fig. 1;
Fig. 4 is the principle schematic of pressure regulator in Fig. 3 and valve position transmitter;
Fig. 5 is the structural representation of pneumatic control unit of the present invention;
Fig. 6 is the structural representation of the explosion-proof box in Fig. 1.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with drawings and Examples.
Refer to a kind of gas transmission and distribution intelligent pressure regulating station shown in Fig. 1, Fig. 2, Fig. 3, comprise casing 10, it is characterized in that, comprise in described casing:
Air inlet pipeline 11;
Main pressure regulator pipeline 12, its inlet end is connected with the outlet side of air inlet pipeline 11;
Secondary pressure regulation pipeline 13, its inlet end is connected with the outlet side of air inlet pipeline 11;
Pneumatic pressure regulating device 14, its quantity is 2 covers, and wherein, the inlet channel of the first pneumatic pressure regulating device is connected by the outlet side of filtrator 19 with main pressure regulator pipeline 11; The inlet channel of the second pneumatic pressure regulating device is connected by the outlet side of filtrator 20 with secondary pressure regulation pipeline 13;
Outlet pipe 15, its inlet end respectively outlet passageway of pressure regulating device pneumatic with first and the outlet passageway of the second pneumatic pressure regulating device is connected;
Controller 16, it is connected with described first pneumatic pressure regulating device and the second pneumatic pressure regulating device respectively;
Explosion-proof box 17, is provided with power module 171 in it, power module is connected with controller 16.
Diffuse pipeline 21.
Described pneumatic pressure regulating device 14 comprises:
Pressure regulator 141, it comprises the head 142 with pressure regulating cavity, is provided with pressure regulator diaphragm 143 in head, and head is divided into head epicoele 144 and head cavity of resorption 145 by pressure regulator diaphragm, and the inlet channel in pressure regulator is connected with filtrator; Outlet passageway in pressure regulator is connected with outlet pipe; Inlet channel in pressure regulator and outlet passageway detect interface and top hole pressure respectively and detect interface and be connected with the corresponding intake pressure in described controller;
Valve position transmitter 146, it comprises shell 147, valve position feeler 148 and displacement transducer 149 is provided with in shell 147, the lower end of valve position feeler from the top of head stretch into head epicoele and with pressure regulator diaphragm above offset, valve position feeler is synchronized with the movement with the spool 150 in pressure regulator; Valve position feeler is connected with displacement transducer, and the valve seat opening signal of the spool in pressure regulator can be converted to can for the resistance signal of controller identification; Displacement transducer is connected with controller, specifically shown in Figure 4.
Pneumatic control unit, it is connected with described controller and described head cavity of resorption respectively.
Pneumatic control unit in Fig. 5 comprises:
Control pilot valve 151, it comprises pilot valve epicoele 152 and pilot valve cavity of resorption 153, and pilot valve epicoele is connected with the outlet passageway in pressure regulator; The side opening of pilot valve cavity of resorption is provided with air admission hole 154; The gas outlet controlled in pilot valve is connected with head cavity of resorption by connecting pipe 156;
Control pilot valve preregulator 157, one intake interface is connected with the inlet channel in pressure regulator, and another intake interface is connected with the outlet passageway in pressure regulator; The interface of giving vent to anger controlled in pilot valve preregulator is connected with the air intake opening controlling pilot valve;
Pneumatic adjustment preregulator 158, one intake interface is connected with the interface of giving vent to anger controlled in pilot valve preregulator, and another intake interface is connected with the outlet passageway in pressure regulator;
Air inlet electromagnetic valve 159, its intake interface is connected with the interface of giving vent to anger in pneumatic adjustment preregulator; Air inlet electromagnetic valve is also connected with controller;
Gas-holder 160, its air intake opening is connected with the interface of giving vent to anger of described air inlet electromagnetic valve, and its gas outlet is connected with the air admission hole of described pilot valve cavity of resorption side;
Give vent to anger solenoid valve 161, its intake interface is connected with the air admission hole of pilot valve cavity of resorption side, and solenoid valve of giving vent to anger also is connected with controller.
Setting spring 162,
Epithelium 163;
The bottom surface of pressure regulator is also provided with quick action emergency valve (not shown), and quick action emergency valve is also connected with controller.
Bypass line 18 is also provided with between described air inlet pipeline 11 and outlet pipe 15.
Also be provided with signal acquisition module 172 and communication module 173 in described explosion-proof box 17, signal acquisition module is connected with controller and the communication module that is connected respectively, specifically as shown in Figure 6.
The control method at gas transmission and distribution intelligent pressure regulating station of the present invention is that the pressure controlling step of the main pressure regulator pipeline in its this control method and secondary pressure regulation pipeline is:
A. the step of minimum guarantee pressure is set, namely by regulating the minimum pressure of the minimum permission of the outlet passageway of the pressure determination pressure regulator of the setting spring in pilot valve;
B. regulate the step of the outlet passageway pressure of pressure regulator, namely in controller, preset the outlet passageway force value of pressure regulator, this value is also adjusted to the outlet passageway force value of pressure regulator by the outlet passageway force value of controller Real-time Collection pressure regulator;
That is: if when the outlet passageway force value of the pressure regulator of Real-time Collection is less than the outlet passageway force value of default pressure regulator, controller opens air inlet electromagnetic valve, the pressure of pilot valve cavity of resorption is increased, causes the outlet passageway pressure of pressure regulator to be increased to the outlet passageway force value of default pressure regulator;
If when the outlet passageway force value of the pressure regulator of Real-time Collection is greater than the outlet passageway force value of default pressure regulator, controller opens is given vent to anger solenoid valve, make the pressure drop of pilot valve cavity of resorption, cause the outlet passageway pressure drop of pressure regulator to the outlet passageway force value presetting pressure regulator.
Wherein, the cycle of the outlet passageway force value of controller Real-time Collection pressure regulator be 10 seconds adjustable by 30 seconds; Controller opens give vent to anger cycle of solenoid valve or controller opens air inlet electromagnetic valve be 50 milliseconds adjustable to 500 milliseconds;
This is due in practical application at the scene, dissimilar pressure regulator has different regulation precision, in boosting and pressure reduction, ensure that system cloud gray model is mild than palpus simultaneously, namely do not allow to occur unexpected boosting and large periodic oscillation, otherwise superpressure overcurrent will the damage of relevant device in Zao Cheng voltage regulating station, even Hui Zaocheng voltage regulating station leaks, and stops air feed. so pressure regulation process entails should be steady, and high precision again.For the pipe network of complexity and the operating mode of change, only have and can be in harmonious proportion effective controling parameters and could meet actual working condition requirement targetedly.
Also comprise the switch step between main pressure regulator pipeline and secondary pressure regulation pipeline:
This is automatic from main road to the switching on secondary road, and maximum not being both of traditional voltage regulating station: traditional voltage regulating station from main road to the switching on secondary road after, the pressure on secondary road is lower than main road due to set pressure, then can be lower than main road, thus also reduces air demand.And after this intelligent pressure regulating station is switched to secondary road from main road, first top hole pressure can reduce, but subsequently can progressively automatic boosting, until the remote setting pressure at the operating pressure reached before main road switching and intelligent pressure regulating station. thus also maintain original air demand of voltage regulating station. simultaneously, as being switched to main road from secondary road, first top hole pressure can raise, but subsequently can progressively automatically step-down, until the remote setting pressure at the operating pressure reached before the switching of secondary road and intelligent pressure regulating station, thus also maintain original air demand of voltage regulating station.
Described controller comprises following shaping modes for the outlet passageway pressure of pressure regulator:
1) pressurize pattern, namely the outlet passageway pressure of pressure regulator regulates according to the outlet passageway force value state of default pressure regulator, does not receive any remote pressure setting value simultaneously;
2) pressure regulation pattern, namely receives the outlet passageway force value of Long-distance Control to default pressure regulator and resets, and carries out the outlet passageway pressure adjustment of regulator according to this up-to-date pressure set points;
3) curve pressure regulation pattern, namely in controller, there is the outlet passageway force value of corresponding default pressure regulator inherence in several periods of one day, and controller regulates according to the outlet passageway pressure of above-mentioned curve to pressure regulator;
Mutually switch between above-mentioned pattern.
The flow control step also comprising main pressure regulator pipeline and secondary pressure regulation pipeline is: controller detects the flow value of pressure regulator in real time, when this value exceedes the pressure regulator Flow Limit definite value be preset in controller, according to flow restriction priority principle, and flow and top hole pressure also exist synchronized relation, controller can send step-down instruction, reduces below flow to the pressure regulator Flow Limit definite value preset by controlling exhaust solenoid valve exhaust.
Specifically:
The present invention adopts and valve position transmitter and pressure regulator body is linked together, and is connected by valve position transmitter again with controller simultaneously.When pressure regulator spool moves opening and closing, valve position signal has been passed to controller by valve position transmitter, and controller and pressure regulator are imported and exported pipeline and are connected, thus the inlet and outlet pressure of pressure regulator can be detected, this Time Controller can according to built-in metering formula Q=F (P1, P2, S, Cg) obtain the current instantaneous delivery value of pressure regulator, formula Q wherein represents instantaneous delivery, and P1 represents intake pressure, P2 represents top hole pressure, S represents the valve seat opening signal in pressure regulator, and Cg represents coefficient of flow, achieves the measurement of instantaneous delivery.
The pneumatic control unit adopted due to the present invention has been compared to innovation and change mutually with general pressure regulator pilot valve, while the top hole pressure retaining manually setting spring change pressure regulator, increase newly and utilized the change of the lower cavity pressure controlling pilot valve to change the change of pressure regulator top hole pressure, pressure regulator top hole pressure approximates the set pressure of spring and the lower cavity pressure sum controlling pilot valve, the spring pressure of such as pressure regulator is set as 3Bar, and the lower cavity pressure controlling pilot valve is 2Bar, so the top hole pressure of pressure regulator is just set as 5Bar.If the spring pressure of pressure regulator is set as the minimum guarantee pressure of pressure regulator, does not namely need repeatedly the pressure of repeatedly setting, thus the top hole pressure of pressure regulator will be changed, only need to change the lower cavity pressure controlling pilot valve.For effectively changing the lower cavity pressure controlling pilot valve, in pneumatic control unit, be provided with two solenoid valves, one is air inlet electromagnetic valve, and another is exhaust solenoid valve, and is connected with the cavity of resorption controlling pilot valve.When air inlet electromagnetic valve is opened, the lower cavity pressure of control pilot valve can be made to increase, increase from causing pressure regulator top hole pressure thereupon.When exhaust solenoid valve is opened, the cavity of resorption pressure drop of control pilot valve can be made, cause pressure regulator top hole pressure to decline thereupon.Because two solenoid valves are connected with controller, and explosion-proof box is connected with controller, therefore effectively controls the unlatching of two solenoid valves by controller.When controller through explosion-proof box to long-range boost instruction, first controller detects current top hole pressure, then effectively opens air inlet electromagnetic valve, thus effectively changes pressure regulator top hole pressure and rise, and realizes effectively boosting.When controller receives long-range step-down instruction through explosion-proof box case, first controller detects current top hole pressure, then effectively opens exhaust solenoid valve, thus effectively changes the decline of pressure regulator top hole pressure, realizes effective step-down.Can effectively realize remote auto voltage regulation function for this reason.
In the present invention, the remote adjustment pattern of top hole pressure comprises pressurize, long-range, curve pressure regulation three kinds.When top hole pressure reaches the set goal value through overregulating, for making top hole pressure continue according to desired value stable operation, and avoiding other operation and interference, pressurize pattern can be selected.Adjustment requirement due to top hole pressure is a mild process, therefore when the change top hole pressure needing pointwise, and when carrying out adjustment process, can select long-range pressure regulation pattern.In order to more close to the running status of pipe network, and the intelligent level of voltage regulating station can be embodied, can trade-off curve pressure regulation pattern.Under curve pressure regulation pattern, can by the pressure curve of every day in a week from Monday to Sunday, pressure curve forms by the horizontal ordinate time period, with ordinate force value, and a pressure curve comprises at most 7 time periods and 7 force value, is input to controller.Then, after confirming startup, the top hole pressure at intelligent pressure regulating station will bring into operation according to pressure curve.
In the present invention, because controller can detect current instantaneous delivery at any time, when finding that current instantaneous delivery has met or exceeded the Flow Limit definite value of long-range setting, according to flow restriction priority principle, flow and top hole pressure also exist synchronized relation simultaneously, controller can send step-down instruction, by effectively controlling the exhaust solenoid valve in pneumatic control unit, thus effectively realizes remote flow attributive function.
In the present invention; for effective emergency cut-off is to the air feed in pressure regulator downstream; the safety of protection downstream pipe network or when doing emergency processing; continue to send step-down instruction by controller; by effectively controlling the exhaust solenoid valve in pneumatic control unit; cause the constantly lower falling-rising of pressure regulator top hole pressure; when top hole pressure meets or exceeds the undervoltage pressure of pressure regulator quick action emergency valve; the cut-out of quick action emergency valve can be caused; stop the air feed of pressure regulator, thus effectively realize terminal user's contingency management function.
In the present invention, because controller is connected with explosion-proof box, thus adopt wired in MODBUS mode or wireless in GSM mode by the communication module in explosion-proof box, by the intelligent pressure regulating station relevant information of controller acquisition and processing, be sent to the equipment such as SCADA center or wireless terminal, such as can be sent on the mobile phone of specifying, show, therefore have effectively achieved remote dynamic monitoring function.
All functions effectively regulate pressure and the flow of pipe network by remote mode for gas transmission and distribution field above, and the intellectuality realizing transmission & distribution scheduling has good actual effect.
In addition, the present invention adopts demountable structure, easy to maintenance.
In addition, the present invention adopts using built-in powered battery as stand-by power supply work pattern, when the interruption of therefore powering outside, still can maintain the work of at least 1 month, so the present invention has applicability widely to field working conditions.
During use, first set by the minimum guarantee pressure of the setting spring in pneumatic control unit to pressure regulator.Then by the action button of controller, according to operation manual, the unlatching of some moving electromagnetic valve 159,161 or closedown, complete the setting of the initial launch pressure of pressure regulator.Then pressure regulator is made to enter running status.
After pressure regulator enters running status, be connected with intelligent pressure regulating station of the present invention by two kinds of patterns, realize remote detection and control.The first is the special-purpose assorted software by this intelligent pressure regulating station, is connected with explosion-proof box by special supervisory control comuter.Another kind is connected with explosion-proof box by the SCADA system in the voltage regulating station at place, this intelligent pressure regulating station.Following functions is realized by various special instruction in MODBUS mode.
The long-range pressure regulation of the first:
After when remote pressure setting, instruction is sent to explosion-proof box, built-in communication module 173 by instruction through electric interfaces with private cable, then the electric interfaces of via controller passes to controller.Then first controller detects current top hole pressure by its pressure interface, judging that mouth pressure setting value is greater than current exit pressure levels, and when exceeding control accuracy, then boost instruction is sent, the air inlet electromagnetic valve in pneumatic control unit is driven effectively to open through electric interfaces, thus cause and control pilot valve cavity of resorption pressure increase, and thus effectively change pressure regulator top hole pressure and rise, realize effectively boosting.Judging that mouth pressure setting value is less than current exit pressure levels, and when exceeding control accuracy, then step-down instruction is sent, the air inlet electromagnetic valve in pneumatic control unit is driven effectively to open through electric interfaces, thus cause control pilot valve cavity of resorption pressure drop, and thus effectively change pressure regulator top hole pressure and decline, realize effective step-down.Effectively achieve remote auto voltage regulation function for this reason.
It two is flow measurements:
The present invention adopts and valve position transmitter and pressure regulator body is linked together, and is connected by valve position transmitter again with controller simultaneously.When the spool of pressure regulator moves opening and closing, valve position feeler in valve position transmitter is synchronized with the movement with pressure regulator spool, and valve position feeler is connected with the displacement transducer in valve position transmitter, thus valve seat opening signal is converted to the resistance signal that can supply controller identification, import and export pipeline with pressure regulator again with Time Controller to be connected, the inlet and outlet pressure of pressure regulator can be detected by the pressure interface of controller, this Time Controller can according to built-in metering formula Q=F (P1, P2, S, Cg) the current instantaneous delivery value of pressure regulator is obtained, formula Q wherein represents instantaneous delivery, P1 represents intake pressure, P2 represents top hole pressure, S represents the valve seat opening signal in pressure regulator, Cg represents coefficient of flow, thus effectively achieve the measurement of instantaneous delivery.
Its three be remote flow limit:
After long-range current limliting setting instruction is sent to explosion-proof box, the built-in communication module in explosion-proof box, by instruction through electric interfaces with private cable, then the electric interfaces of via controller passes to controller.In the present invention, because controller can detect the instantaneous delivery of current pressure regulator at any time, when finding that current instantaneous delivery has met or exceeded the Flow Limit definite value of long-range setting, according to flow restriction priority principle, flow and top hole pressure also exist synchronized relation simultaneously, controller can send the electric interfaces of step-down instruction via controller, the exhaust solenoid valve effectively controlled in pneumatic control unit by private cable is opened, thus cause control pilot valve cavity of resorption pressure drop, the spool of pressure regulator is closed downwards, reduce the flow of pressure regulator, while effectively changing the decline of pressure regulator top hole pressure, effectively achieve remote flow to limit.
It four is remote dynamic monitorings:
In the present invention, because controller is connected with explosion-proof box, thus adopt wired in MODBUS mode or wireless in GSM mode by the built-in communication module in power supply communication box, by the intelligent voltage regulator relevant information of controller acquisition and processing, comprise: the information such as inlet and outlet pressure, instantaneous delivery, valve seat opening, IP address is sent to the equipment such as SCADA center or wireless terminal, such as to be sent to the form of note by GPRS on the mobile phone of specifying, show, therefore have effectively achieved remote dynamic monitoring.
Its five terminal users contingency management:
In the present invention, for effective emergency cut-off is to the air feed in pressure regulator downstream, the safety of protection downstream pipe network or when doing emergency processing, can continue to send step-down instruction by ventilating controller, the electric interfaces of via controller, the exhaust solenoid valve effectively controlled in pneumatic control unit by private cable is opened, thus cause control pilot valve cavity of resorption pressure drop, make pressure regulator top hole pressure continuous decrease thereupon, when top hole pressure meets or exceeds the undervoltage pressure of pressure regulator quick action emergency valve, the cut-out of quick action emergency valve can be caused, stop the air feed of pressure regulator, thus effectively realize terminal user's contingency management function.
Simultaneously this intelligent pressure regulating station is built-in leakage alarm, door lock detector, filter pressure difference transmitter, the safe operation warning devices such as quick action emergency valve on off state detector.When intelligent pressure regulating station occurs that abnormal work is reported to the police, electric interfaces by controller effectively detects these alarm condition of voltage regulating station, and the built-in communication module effectively alerting signal passed to by private cable by the electric interfaces of controller in power supply communication box, the equipment such as SCADA center and wireless terminal are mail to again by wired and wireless mode, and carry out alarm rapidly, thus achieve the quick sound of this intelligent pressure regulating station abnormality is reflected, and improve the security at this intelligent pressure regulating station to greatest extent.
The present invention, by redesigning the use-pattern of traditional voltage regulating station, has installed multiple intelligent assembly additional, innovation define novel intelligent pressure regulating station.The invention has the advantages that this intelligent pressure regulating station integrates pressure regulation, current limliting, monitoring, control, management and software and hardware, the intelligent Remote Dynamic achieving pressure regulator top hole pressure and flow regulates and management.Gas transmission and distribution field is effectively regulated to pressure and the flow of pipe network by remote mode, the intellectuality of the intellectuality and gas ductwork that realize transmission & distribution scheduling has good actual effect.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to object of the present invention is described, and be not used as limitation of the invention, as long as in essential scope of the present invention, the change of the above embodiment, modification all will be dropped in the scope of claim of the present invention.
Claims (11)
1. a gas transmission and distribution intelligent pressure regulating station, is characterized in that, comprises casing, comprises in described casing:
Air inlet pipeline;
Main pressure regulator pipeline, its inlet end is connected with the outlet side of described air inlet pipeline;
Secondary pressure regulation pipeline, its inlet end is connected with the outlet side of described air inlet pipeline;
Pneumatic pressure regulating device, its quantity is 2 covers, and wherein, the inlet channel of the first pneumatic pressure regulating device is connected by the outlet side of filtrator with described main pressure regulator pipeline; The inlet channel of the second pneumatic pressure regulating device is connected by the outlet side of filtrator with described secondary pressure regulation pipeline;
Outlet pipe, its inlet end is connected with the outlet passageway of described first pneumatic pressure regulating device and the outlet passageway of the second pneumatic pressure regulating device respectively;
Controller, it is connected with described first pneumatic pressure regulating device and the second pneumatic pressure regulating device respectively;
Explosion-proof box, is provided with power module in it, and described power module is connected with described controller.
2. gas transmission and distribution intelligent pressure regulating station according to claim 1, is characterized in that, described pneumatic pressure regulating device comprises:
Pressure regulator, it comprises the head with pressure regulating cavity, is provided with pressure regulator diaphragm in described head, and head is divided into head epicoele and head cavity of resorption by described pressure regulator diaphragm, and the inlet channel in described pressure regulator is connected with filtrator; Outlet passageway in described pressure regulator is connected with described outlet pipe; Inlet channel in described pressure regulator and outlet passageway detect interface and top hole pressure respectively and detect interface and be connected with the corresponding intake pressure in described controller;
Valve position transmitter, it comprises shell, be provided with valve position feeler and displacement transducer in described shell, the lower end of described valve position feeler from the top of described head stretch into head epicoele and with pressure regulator diaphragm above offset, valve position feeler is synchronized with the movement with the spool in described pressure regulator; Described valve position feeler is connected with displacement transducer, and the valve seat opening signal in pressure regulator can be converted to can for the resistance signal of controller identification; Institute's displacement sensors is connected with described controller;
Pneumatic control unit, it is connected with described controller and described head cavity of resorption respectively.
3. gas transmission and distribution intelligent pressure regulating station according to claim 2, it is characterized in that, described pneumatic control unit comprises:
Control pilot valve, it comprises pilot valve epicoele and pilot valve cavity of resorption, and described pilot valve epicoele is connected with the outlet passageway in described pressure regulator; The side opening of described pilot valve cavity of resorption is provided with air admission hole; Gas outlet in described control pilot valve is connected with described head cavity of resorption by connecting pipe;
Control pilot valve preregulator, one intake interface is connected with the inlet channel in described pressure regulator, and another intake interface is connected with the outlet passageway in described pressure regulator; Interface of giving vent to anger in described control pilot valve preregulator is connected with the air intake opening of described control pilot valve;
Pneumatic adjustment preregulator, one intake interface is connected with the interface of giving vent to anger in described control pilot valve preregulator, and another intake interface is connected with the outlet passageway in described pressure regulator;
Air inlet electromagnetic valve, its intake interface is connected with the interface of giving vent to anger in described pneumatic adjustment preregulator; Described air inlet electromagnetic valve is also connected with described controller;
Gas-holder, its air intake opening is connected with the interface of giving vent to anger of described air inlet electromagnetic valve, and its gas outlet is connected with the air admission hole of described pilot valve cavity of resorption side;
Give vent to anger solenoid valve, its intake interface is connected with the air admission hole of described pilot valve cavity of resorption side, described in solenoid valve of giving vent to anger also be connected with described controller.
4. gas transmission and distribution intelligent pressure regulating station according to claim 2, is characterized in that,
The bottom surface of described pressure regulator is also provided with quick action emergency valve, and described quick action emergency valve is also connected with described controller.
5. gas transmission and distribution intelligent pressure regulating station according to claim 1, is characterized in that,
Also bypass line is provided with between described air inlet pipeline and described outlet pipe.
6. gas transmission and distribution intelligent pressure regulating station according to claim 1, is characterized in that,
Also be provided with signal acquisition module and communication module in described explosion-proof box, described signal acquisition module is connected with described controller and communication module respectively.
7. a control method for gas transmission and distribution, is characterized in that:
The pressure controlling step of the main pressure regulator pipeline in this control method and secondary pressure regulation pipeline is:
A. the step of minimum guarantee pressure is set, namely by regulating the minimum pressure of the minimum permission of the outlet passageway of the pressure determination pressure regulator of the setting spring in pilot valve;
B. regulate the step of the outlet passageway pressure of pressure regulator, namely in controller, preset the outlet passageway force value of pressure regulator, this value is also adjusted to the outlet passageway force value of pressure regulator by the outlet passageway force value of controller Real-time Collection pressure regulator;
That is: if when the outlet passageway force value of the pressure regulator of Real-time Collection is less than the outlet passageway force value of default pressure regulator, controller opens air inlet electromagnetic valve, the pressure of pilot valve cavity of resorption is increased, causes the outlet passageway pressure of pressure regulator to be increased to the outlet passageway force value of default pressure regulator;
If when the outlet passageway force value of the pressure regulator of Real-time Collection is greater than the outlet passageway force value of default pressure regulator, controller opens is given vent to anger solenoid valve, make the pressure drop of pilot valve cavity of resorption, cause the outlet passageway pressure drop of pressure regulator to the outlet passageway force value presetting pressure regulator;
Wherein, the periodic regime of the outlet passageway force value of controller Real-time Collection pressure regulator is 10 seconds to 30 seconds; Give vent to anger cycle of solenoid valve or controller opens air inlet electromagnetic valve of controller opens is 50 milliseconds to 500 milliseconds.
8. the control method of gas transmission and distribution according to claim 7, is characterized in that:
Also comprise the switch step between main pressure regulator pipeline and secondary pressure regulation pipeline:
1) if after main pressure regulator pipeline is switched to secondary pressure regulation pipeline, first its top hole pressure can reduce, but subsequently can progressively automatic boosting, until reach main pressure regulator pipeline switch before operating pressure namely preset the outlet passageway force value of pressure regulator; Thus also maintain original air demand of voltage regulating station;
2) if be switched to main pressure regulator pipeline from secondary pressure regulation pipeline, first its top hole pressure can raise, but subsequently can progressively automatically step-down, until reach secondary pressure regulation pipeline switch before operating pressure namely preset the outlet passageway force value of pressure regulator, thus also maintain original air demand of voltage regulating station.
9. the control method of gas transmission and distribution according to claim 7, is characterized in that:
Described controller comprises following shaping modes for the outlet passageway pressure of pressure regulator:
1) pressurize pattern, namely the outlet passageway pressure of pressure regulator regulates according to the outlet passageway force value state of default pressure regulator, does not receive any remote pressure setting value simultaneously;
2) pressure regulation pattern, namely receives the outlet passageway force value of Long-distance Control to default pressure regulator and resets, and carries out the outlet passageway pressure adjustment of regulator according to this up-to-date pressure set points;
3) curve pressure regulation pattern, namely in controller, there is the outlet passageway force value of corresponding default pressure regulator inherence in several periods of one day, and controller regulates according to the outlet passageway pressure of above-mentioned curve to pressure regulator;
Can mutually switch between above-mentioned pattern.
10. the control method of gas transmission and distribution according to claim 7, is characterized in that:
The flow control step also comprising main pressure regulator pipeline and secondary pressure regulation pipeline is: controller detects the flow value of pressure regulator in real time, when this value exceedes the pressure regulator Flow Limit definite value be preset in controller, according to flow restriction priority principle, and flow and top hole pressure also exist synchronized relation, controller can send step-down instruction, reduces below flow to the pressure regulator Flow Limit definite value preset by controlling exhaust solenoid valve exhaust.
The control method of 11. gas transmission and distributions according to claim 7, is characterized in that:
Described controller carries out both-way communication by the opertaing device of communication module and far-end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120904.2A CN104865983A (en) | 2015-03-19 | 2015-03-19 | Fuel gas transmission and distribution intelligent pressure regulating station and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120904.2A CN104865983A (en) | 2015-03-19 | 2015-03-19 | Fuel gas transmission and distribution intelligent pressure regulating station and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104865983A true CN104865983A (en) | 2015-08-26 |
Family
ID=53911882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510120904.2A Pending CN104865983A (en) | 2015-03-19 | 2015-03-19 | Fuel gas transmission and distribution intelligent pressure regulating station and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104865983A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091408A (en) * | 2017-07-03 | 2017-08-25 | 常熟市上海飞奥压力容器制造有限公司 | Two-way gas pressure regulating station |
| CN108310854A (en) * | 2018-01-23 | 2018-07-24 | 北京东方通捷燃气有限责任公司 | A kind of gas filter and its combustion gas Gao Peizhan of application |
| CN109870363A (en) * | 2019-01-30 | 2019-06-11 | 重庆瑞力比燃气设备有限责任公司 | A kind of pressure-measuring method and pressure testing system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096268Y (en) * | 2007-08-03 | 2008-08-06 | 中国市政工程华北设计研究院 | Flux monitoring -type gas pressure regulating apparatus |
| CN103336512A (en) * | 2013-06-29 | 2013-10-02 | 上海飞奥燃气设备有限公司 | Fuel gas transporting and distributing intelligent managing device |
-
2015
- 2015-03-19 CN CN201510120904.2A patent/CN104865983A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096268Y (en) * | 2007-08-03 | 2008-08-06 | 中国市政工程华北设计研究院 | Flux monitoring -type gas pressure regulating apparatus |
| CN103336512A (en) * | 2013-06-29 | 2013-10-02 | 上海飞奥燃气设备有限公司 | Fuel gas transporting and distributing intelligent managing device |
Non-Patent Citations (7)
| Title |
|---|
| 刘新领，韩霞，孙慧洁: "城镇燃气标准化调压计量箱的研究与应用", 《煤气与热力》 * |
| 刘银锁，肖世德，吴志刚: "基于PLC的天然气高中压站的智能监控系统研制", 《工业控制计算机》 * |
| 曹印锋，刘萌萌，高顺利: "智能燃气管网建设中的远程智能调压技术应用", 《城市燃气》 * |
| 赵燕: "谈燃气调压器的选用及安装", 《山西建筑》 * |
| 金永功: "指挥器控制式调压器的压力与遥控", 《上海煤气》 * |
| 金永功: "自力式调压器计算开度应用于输配管理的实验研究", 《城市燃气》 * |
| 韩 枫， 王 冬: "天然气调压设施在工厂中的应用", 《当代化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091408A (en) * | 2017-07-03 | 2017-08-25 | 常熟市上海飞奥压力容器制造有限公司 | Two-way gas pressure regulating station |
| CN108310854A (en) * | 2018-01-23 | 2018-07-24 | 北京东方通捷燃气有限责任公司 | A kind of gas filter and its combustion gas Gao Peizhan of application |
| CN109870363A (en) * | 2019-01-30 | 2019-06-11 | 重庆瑞力比燃气设备有限责任公司 | A kind of pressure-measuring method and pressure testing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103336512B (en) | Gas transmission and distribution intelligent management apapratus | |
| CN202228922U (en) | Energy saving management unit for pipeline gas supply | |
| CN104865983A (en) | Fuel gas transmission and distribution intelligent pressure regulating station and control method thereof | |
| CN110784017A (en) | Intelligent detection device and method for distribution transformer based on real-time data acquisition | |
| CN112197171B (en) | Intelligent remote voltage regulation control system | |
| CN104747453B (en) | Two-stage screw compressor discharge pressure stabilizing device and two-stage screw compressor discharge pressure stabilizing method | |
| CN111519705A (en) | Full-automatic uninterrupted safe and intelligent water supply system | |
| CN109139930A (en) | A kind of energy conservation and environmental protection wisdom pressure regulator valve | |
| CN207650662U (en) | A kind of intelligent pressure control system | |
| CN103267224A (en) | Self-feedback control method of gas dispenser | |
| CN209782246U (en) | Automatic pressure-regulating compressed air centralized air supply system | |
| CN102927444B (en) | Control type pressure regulating system of compressed natural gas | |
| CN205479618U (en) | Pneumatic remote regulating system of voltage regulating station | |
| CN106523330B (en) | A kind of multisystem air compression station compressed air is incorporated into the power networks pressure difference compensation control method | |
| CN103324184B (en) | Gas transmission and distribution supervisory system | |
| CN215522887U (en) | Intelligent gas pressure regulating system | |
| CN104482283B (en) | Upstream under-pressure automatic closing pressure regulator | |
| CN209417602U (en) | A kind of Intelligent flow controller based on LoRa Yu the bis- wireless communications of Zigbee | |
| CN114321716A (en) | Intelligent gas pressure regulating equipment with secondary circuit switching function | |
| CN208309687U (en) | A kind of intelligent emergent supply equipment | |
| CN111379725B (en) | Centrifugal gas compressor control method | |
| CN209672061U (en) | A kind of electric equipment intelligent electrification making-up air device and system | |
| CN208764669U (en) | The flow of pipeline natural gas adjusts setter | |
| CN204420280U (en) | Under-voltage auto-closing pressure regulator before valve | |
| CN212803162U (en) | Electric automatic well opening and closing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |