CN109282145A - A kind of gas pipeline hot standby pressure regulation method online - Google Patents
A kind of gas pipeline hot standby pressure regulation method online Download PDFInfo
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- CN109282145A CN109282145A CN201811303101.0A CN201811303101A CN109282145A CN 109282145 A CN109282145 A CN 109282145A CN 201811303101 A CN201811303101 A CN 201811303101A CN 109282145 A CN109282145 A CN 109282145A
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- ball valve
- tap line
- pressure regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a kind of gas pipeline hot standby pressure regulation methods online, this method comprises: being connected to pressure regulation tap line and spare pressure regulation tap line；Various valves and monitoring device are being concatenated respectively with pressure regulation tap line and spare pressure regulation tap line；By each pressure controller and the access of pressure high relay with pressure regulation tap line and spare pressure regulation tap line；Natural gas input is with pressure regulation tap line and spare pressure regulation tap line；Set the pressure set points of each pressure controller and the high relay of pressure；SCADA system is carrying out online pressure regulation with pressure regulation tap line and spare pressure regulation tap line according to the selection of the pressure set points of the first operating pressure regulating valve and the second operating pressure regulating valve；After online pressure regulation, natural gas is exported by second header.Beneficial effects of the present invention: can be achieved the entire handoff procedure of gas pipeline yard voltage-regulating system, be not necessarily to manual intervention, on-line automatic completion, smooth transition, high reliablity.
Description
Technical field
The present invention relates to gas pipeline technical field, in particular to a kind of gas pipeline hot standby pressure regulation method online.
Background technique
Voltage-regulating system is one of the critical facility of gas pipeline point defeated station field.To guarantee that gas continuous and stable transports to downstream,
The design of voltage-regulating system is most important.The voltage-regulating system mainly used in the past, for cold standby, is adjusted with road and spare road switch mode
Pressure system mainly include front and back converge tracheae, process upstream switching ball, urgent block valve, pressure regulator valve (including monitoring pressure adjust
Valve and operating pressure regulating valve), downstream process ball valve, pressure controller.With road and spare road urgent block valve and pressure regulation
Valve (monitoring pressure-regulating valve+operating pressure regulating valve) process set value is all the same.When with the voltage-regulating system failure on road, therefore
Hinder signal to upload, spare road is switched to by process upstream switching ball.
There are the following problems for the voltage-regulating system of this cold standby mode: (one) and the not all system failure can be with signal shapes
Formula uploads, and when the system failure can not upload, back-up system can not come into operation in time, and the safety for causing entire voltage-regulating system is hidden
Suffer from；(2) two-way voltage-regulating system is cold standby, when needing to switch with/spare road voltage-regulating system, passes through process upstream switch valve
Switch with/spare road, at this moment regulating valve vigorous motion, pressure can not relatively smooth transition, or even surpass after having valve
The risk of pressure；(3) cold standby voltage-regulating system relies on simple logic judgment, has corresponding monitoring and protection to downstream pressure superpressure,
It is even truncated when necessary and is being switched to spare road with road voltage-regulating system, but for the blocking of road voltage-regulating system or the too low work of flow
Condition, without the respective logic for detecting and protecting automatically.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of gas pipeline hot standby pressure regulation method online, it can root
The on-line automatic switching on the road of pressure regulation is realized according to demand, is improved continuity, stability and the reliability of detection and control, is facilitated fortune
Row maintenance.
The present invention provides a kind of gas pipeline hot standby pressure regulation methods online, this method comprises:
It is connected between the first header and the second header with pressure regulation tap line and spare pressure regulation tap line, and by institute
It states the first header to connect with the first process pipelines, second header is connect with the second process pipelines；
It is described be sequentially connected in series in pressure regulation tap line the first technique ball valve, the first process bands executing agency ball valve,
First monitors pressure-regulating valve, the first operating pressure regulating valve, first thermometer, first pressure transmitter, second pressure on the spot
Transmitter, third pressure transmitter, first check-valve and the second technique ball valve；
First pressure controller is connect with the first monitoring pressure-regulating valve and the first pressure transmitter, by the
Two pressure controllers are connect with the first operating pressure regulating valve and the second pressure transmitter, by first pressure Gao Gaoji
Electric appliance is connect with first process bands executing agency's ball valve and the third pressure transmitter；
The 7th technique ball valve, the second process bands executing agency ball have been sequentially connected in series in the spare pressure regulation tap line
Valve, second monitor pressure-regulating valve, the second operating pressure regulating valve, second thermometer, the 4th pressure transmitter, the 5th pressure on the spot
Power transmitter, the 6th pressure transmitter, second check-valve and the 8th technique ball valve；
Third pressure controller is connect with the second monitoring pressure-regulating valve and the 4th pressure transmitter, by the
Four pressure controllers are connect with the second operating pressure regulating valve and the 5th pressure transmitter, by second pressure Gao Gaoji
Electric appliance is connect with second process bands executing agency's ball valve and the 6th pressure transmitter；
Natural gas inputs first header, and by the first technique ball valve and the 7th technique ball valve respectively into
Enter described with pressure regulation tap line and the spare pressure regulation tap line；
Be set separately the first pressure controller, the second pressure controller, the high relay of the first pressure,
The pressure set points of the third pressure controller, the 4th pressure controller and the high relay of the second pressure, and
Ensure that the first operating pressure regulating valve is different with the pressure set points of the second operating pressure regulating valve；
SCADA system is set according to the pressure of the first operating pressure regulating valve and the second operating pressure regulating valve
Value selection is described to carry out online pressure regulation with pressure regulation tap line or the spare pressure regulation tap line；
After online pressure regulation, natural gas is exported by second header.
It is described when carrying out online pressure regulation with pressure regulation tap line when selecting as further improvement of the invention, it is described
First pressure controller, the second pressure controller and the high relay of the first pressure are controlled respectively according to pressure set points
Make the first monitoring pressure-regulating valve, the first operating pressure regulating valve and first process bands executing agency ball valve
Valve opening；
When selecting the spare pressure regulation tap line to carry out online pressure regulation, the third pressure controller, the described 4th
Pressure controller and the high relay of two pressure controlled respectively according to pressure set points it is described second monitoring pressure-regulating valve,
The valve opening of the second operating pressure regulating valve and second process bands executing agency ball valve.
As further improvement of the invention, first process bands executing agency ball valve, the first monitoring pressure tune
Valve, the first operating pressure regulating valve, second process bands executing agency ball valve, the second monitoring pressure is saved to adjust
Valve, the second operating pressure regulating valve flow signal access after instrument junction box and be sent into SCADA system and supervised in real time
It surveys.
As further improvement of the invention, the first pressure transmitter, the second pressure transmitter and third pressure
First pressure controller described in power transmitter real-time monitoring, the second pressure controller and the high relay of the first pressure
Pressure value and pressure signal is accessed after instrument junction box and is sent into SCADA system and carries out real-time monitoring；
Described in 4th pressure transmitter, the 5th pressure transmitter and the 6th pressure transmitter real-time monitoring
Third pressure controller, the pressure value of the 4th pressure controller and the high relay of the second pressure and by pressure signal
SCADA system progress real-time monitoring is sent into after accessing instrument junction box.
It is improved as of the invention further, the temperature letter of the described first thermometer and the described second thermometer on the spot on the spot
It number accesses after instrument junction box and is sent into SCADA system and carries out real-time monitoring.
As further improvement of the invention, when setting pressure set points: the pressure of the second pressure controller is set
Definite value is SP, and the pressure set points of the first pressure controller are SP+ △ P1, the pressure of the high relay of the first pressure
Setting value is SP+ △ P2, and the pressure set points of the 4th pressure controller are SP- △ P1, the third pressure controller
Pressure set points are SP+ △ P1, and the pressure set points of the high relay of the second pressure are SP+ △ P2；
Wherein, SP+ △ P2 is greater than SP+ △ P1, SP+ △ P1 and is greater than SP, and SP is greater than SP- △ P1.
It is improved as of the invention further, further includes: to described with pressure regulation tap line and the spare pressure regulation branch
Blow-down pipe on the pipeline of road is vented.
As further improvement of the invention, between the first technique ball valve and the first process bands executing agency ball valve
With the natural gas in pressure regulation tap line by being set between the first technique ball valve and the first process bands executing agency ball valve
The first blow-down pipe set is vented；
Between first process bands executing agency's ball valve and the first monitoring pressure-regulating valve with pressure regulation branch
Natural gas on pipeline between first process bands executing agency's ball valve and the first monitoring pressure-regulating valve by being arranged
The second blow-down pipe be vented；
Between the first operating pressure regulating valve and the first check-valve with natural in pressure regulation tap line
Gas is vented by the third blow-down pipe being arranged between the first operating pressure regulating valve and the first check-valve.
As further improvement of the invention, between the 7th technique ball valve and the second process bands executing agency ball valve
Natural gas in spare pressure regulation tap line between the 7th technique ball valve and the second process bands executing agency ball valve by setting
The 4th blow-down pipe set is vented；
Spare pressure regulation branch between second process bands executing agency's ball valve and the second monitoring pressure-regulating valve
Natural gas on pipeline between second process bands executing agency's ball valve and the second monitoring pressure-regulating valve by being arranged
The 5th blow-down pipe be vented；
It is natural in spare pressure regulation tap line between the second operating pressure regulating valve and the 7th shut-off valve
Gas is vented by the 6th blow-down pipe being arranged between the second operating pressure regulating valve and the 7th shut-off valve.
It is improved as of the invention further, when the first technique ball valve breaks down, natural gas passes through described the
The first by-pass line for being arranged on one technique ball valve enters described with pressure regulation tap line；
When the 7th technique ball valve break down when, natural gas by be arranged on the 7th technique ball valve second by
Road pipeline enters the spare pressure regulation tap line.
The invention has the benefit that the entire handoff procedure of gas pipeline yard voltage-regulating system can be realized, without artificial dry
In advance, on-line automatic completion, smooth transition, high reliablity.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the hot standby regulator online of gas pipeline described in the embodiment of the present invention.
1, first flange；2, the first process pipelines；3, pipe cap；4, the first header；5-1, with pressure regulation tap line；5-2,
First technique ball valve；5-3, the first process bands executing agency ball valve；5-4, the first monitoring pressure-regulating valve；5-5, the first movement pressure
Force regulating valve；5-6, first check-valve；5-7, the second technique ball valve；5-8, third technique ball valve；5-9, the first shut-off valve；5-
10, the first by-pass line；5-11, the first blow-down pipe；5-12, the 4th technique ball valve；5-13, the second shut-off valve；5-14, third
Flange；5-15, the second blow-down pipe；5-16, the 5th technique ball valve；5-17, third shut-off valve；5-18, the 4th flange；5-19,
Third blow-down pipe；5-20, the 6th technique ball valve；5-21, the 4th shut-off valve；5-22, the 5th flange；5-23, first are with regard to ground temperature
Spend table；5-24, first pressure transmitter；5-25, second pressure transmitter；5-26, third pressure transmitter；5-27, the first pressure
Force controller；5-28, second pressure controller；The high relay of 5-29, first pressure；5-30, first instrument cable；5-31,
Second instrument cable；5-32, third instrument cable；5-33, the 4th instrument cable；5-34, the 5th instrument cable；5-35, the 6th
Instrument cable；6-1, spare pressure regulation tap line；6-2, the 7th technique ball valve；6-3, the second process bands executing agency ball valve；6-
4, the second monitoring pressure-regulating valve；6-5, the second operating pressure regulating valve；6-6, second check-valve；6-7, the 8th technique ball valve；
6-8, the 9th technique ball valve；6-9, the 5th shut-off valve；6-10, the second by-pass line；6-11, the 4th blow-down pipe；6-12, the tenth
Technique ball valve；6-13, the 6th shut-off valve；6-14, the 6th flange；6-15, the 5th blow-down pipe；6-16, the 11st technique ball valve；
6-17, the 7th shut-off valve；6-18, the 7th flange；6-19, the 6th blow-down pipe；6-20, the 12nd technique ball valve；6-21, the 8th
Shut-off valve；6-22, eight treating observances are blue；The thermometer on the spot of 6-23, second；6-24, the 4th pressure transmitter；6-25, the 5th pressure become
Send device；6-26, the 6th pressure transmitter；6-27, third pressure controller；6-28, the 4th pressure controller；6-29, the second pressure
Li Gaogao relay；6-30, the 7th instrument cable；6-31, the 8th instrument cable；6-32, the 9th instrument cable；6-33, the tenth
Instrument cable；6-34, the 11st instrument cable；6-35, the 12nd instrument cable；7, the second header；8, the second process pipelines；9,
Second flange.
Specific embodiment
The present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
A kind of gas pipeline of the embodiment of the present invention hot standby pressure regulation method online, this method comprises:
It is connected between the first header 4 and the second header 7 with pressure regulation tap line 5-1 and spare pressure regulation tap line 6-
1, and the first header 4 is connect with the first process pipelines 2, the second header 7 is connect with the second process pipelines 8；
With being sequentially connected in series the first technique ball valve 5-2, the first process bands executing agency ball valve on pressure regulation tap line 5-1
5-3, first monitor pressure-regulating valve 5-4, the first operating pressure regulating valve 5-5, first thermometer 5-23, first pressure change on the spot
Send device 5-24, second pressure transmitter 5-25, third pressure transmitter 5-26, first check-valve 5-6 and the second technique ball valve 5-
7；
First pressure controller 5-27 is connect with the first monitoring pressure-regulating valve 5-4 and first pressure transmitter 5-24,
Second pressure controller 5-28 is connect with the first operating pressure regulating valve 5-5 and second pressure transmitter 5-25, by the first pressure
Li Gaogao relay 5-29 is connect with the first process bands executing agency ball valve 5-3 and third pressure transmitter 5-26；
The 7th technique ball valve 6-2, the second process bands executing agency ball have been sequentially connected in series on spare pressure regulation tap line 6-1
Valve 6-3, second monitor pressure-regulating valve 6-4, the second operating pressure regulating valve 6-5, second thermometer 6-23, the 4th pressure on the spot
Transmitter 6-24, the 5th pressure transmitter 6-25, the 6th pressure transmitter 6-26, second check-valve 6-6 and the 8th technique ball valve
6-7；
Third pressure controller 6-27 is connect with the second monitoring pressure-regulating valve 6-4 and the 4th pressure transmitter 6-24,
4th pressure controller 6-28 is connect with the second operating pressure regulating valve 6-5 and the 5th pressure transmitter 6-25, by the second pressure
Li Gaogao relay 6-29 is connect with the second process bands executing agency ball valve 6-3 and the 6th pressure transmitter 6-26；
Natural gas inputs the first header 4, and is respectively enterd by the first technique ball valve 5-2 and the 7th technique ball valve 6-2
With pressure regulation tap line 5-1 and spare pressure regulation tap line 6-1；
Be set separately first pressure controller 5-27, second pressure controller 5-28, the high relay 5-29 of first pressure,
The pressure set points of third pressure controller 6-27, the 4th pressure controller 6-28 and the high relay 6-29 of second pressure, and
Ensure that the pressure set points of the first operating pressure regulating valve 5-5 and the second operating pressure regulating valve 6-5 are different；
SCADA system is according to the pressure set points of the first operating pressure regulating valve 5-5 and the second operating pressure regulating valve 6-5
Selection is carrying out online pressure regulation with pressure regulation tap line 5-1 or spare pressure regulation tap line 6-1；
After online pressure regulation, natural gas is exported by the second header 7.
When selection when carrying out online pressure regulation with pressure regulation tap line 5-1, first pressure controller 5-27, second pressure control
The device 5-28 processed and high relay 5-29 of first pressure controlled respectively according to pressure set points the first monitoring pressure-regulating valve 5-4,
The valve opening of first operating pressure regulating valve 5-5 and the first process bands executing agency ball valve 5-3；
When selecting spare pressure regulation tap line 6-1 to carry out online pressure regulation, third pressure controller 6-27, the 4th pressure control
The device 6-28 processed and high relay 6-29 of two pressure controls the second monitoring pressure-regulating valve 6-4, according to pressure set points respectively
The valve opening of two operating pressure regulating valve 6-5 and the second process bands executing agency ball valve 6-3.
First process bands executing agency ball valve 5-3, the first monitoring pressure-regulating valve 5-4, the first operating pressure regulating valve 5-
5, the flow of the second process bands executing agency ball valve 6-3, the second monitoring pressure-regulating valve 6-4, the second operating pressure regulating valve 6-5
Signal is sent into SCADA system progress real-time monitoring after accessing instrument junction box.
First pressure transmitter 5-24, second pressure transmitter 5-25 and third pressure transmitter 5-26 real-time monitoring first
The pressure value of pressure controller 5-27, second pressure controller 5-28 and the high relay 5-29 of first pressure and by pressure signal
SCADA system progress real-time monitoring is sent into after accessing instrument junction box.4th pressure transmitter 6-24, the 5th pressure transmitter
6-25 and the 6th pressure transmitter 6-26 real-time monitoring third pressure controller 6-27, the 4th pressure controller 6-28 and the second pressure
Pressure signal is simultaneously accessed after instrument junction box and is sent into SCADA system and is supervised in real time by the pressure value of Li Gaogao relay 6-29
It surveys.
The temperature signal of the first thermometer 6-23 on the spot of thermometer 5-23 and second on the spot is sent after accessing instrument junction box
Enter SCADA system and carries out real-time monitoring.
When setting pressure set points: by the pressure set points of second pressure controller 5-28 as SP, first pressure controller
The pressure set points of 5-27 are SP+ △ P1, and the pressure set points of the high relay 5-29 of first pressure are SP+ △ P2, the 4th pressure
The pressure set points of force controller 6-28 are SP- △ P1, and the pressure set points of third pressure controller 6-27 are SP+ △ P1, the
The pressure set points of the high relay 6-29 of two pressure are SP+ △ P2；Wherein, SP+ △ P2 is greater than SP+ △ P1, SP+ △ P1 and is greater than
SP, SP are greater than SP- △ P1.In general, △ P1=0.05MPa, △ P2=0.1MPa.
By with the first operating pressure regulating valve 5-5 and spare pressure regulation tap line 6-1 on pressure regulation tap line 5-1
On the second operating pressure regulating valve 6-5 pressure set points it is different, realize with pressure regulation tap line 5-1 and spare pressure regulation
The on-line automatic switching of tap line 6-1 is not necessarily to manual intervention.
Further, further includes: to the blow-down pipe on pressure regulation tap line 5-1 and spare pressure regulation tap line 6-1
Line is vented.
Specifically, between the first technique ball valve 5-2 and the first process bands executing agency ball valve 5-3 with pressure regulation bypass duct
Natural gas on line 5-1 passes through first be arranged between the first technique ball valve 5-2 and the first process bands executing agency ball valve 5-3 and puts
Blank pipe line 5-11 is vented.
Between the monitoring of first process bands executing agency ball valve 5-3 and first pressure-regulating valve 5-4 with pressure regulation bypass duct
Natural gas on line 5-1 is by being arranged between the monitoring of the first process bands executing agency ball valve 5-3 and first pressure-regulating valve 5-4
Second blow-down pipe 5-15 is vented.
Between first operating pressure regulating valve 5-5 and first check-valve 5-6 with natural on pressure regulation tap line 5-1
Gas passes through the third blow-down pipe 5-19 being arranged between the first operating pressure regulating valve 5-5 and first check-valve 5-6 and is vented.
On spare pressure regulation tap line 6-1 between 7th technique ball valve 6-2 and the second process bands executing agency ball valve 6-3
Natural gas pass through the 4th blow-down pipe that is arranged between the 7th technique ball valve 6-2 and the second process bands executing agency ball valve 6-3
6-11 is vented.
Spare pressure regulation bypass duct between the monitoring of second process bands executing agency ball valve 6-3 and second pressure-regulating valve 6-4
Natural gas on line 6-1 is by being arranged between the monitoring of the second process bands executing agency ball valve 6-3 and second pressure-regulating valve 6-4
5th blow-down pipe 6-15 is vented.
The day on spare pressure regulation tap line 6-1 between second operating pressure regulating valve 6-5 and the 7th shut-off valve 6-17
Right gas passes through the 6th blow-down pipe 6-19 being arranged between the second operating pressure regulating valve 6-5 and the 7th shut-off valve 6-17 and is put
It is empty.
Further, when the first technique ball valve 5-2 breaks down, natural gas on the first technique ball valve 5-2 by being arranged
The first by-pass line 5-10 enter with pressure regulation tap line 5-1.When the 7th technique ball valve 6-2 breaks down, natural gas
Enter spare pressure regulation tap line 6-1 by the second by-pass line 6-10 being arranged on the 7th technique ball valve 6-2.
Hot standby pressure regulation method is hot standby online based on gas pipeline as shown in Figure 1 online for gas pipeline of the present invention
Regulator, the device are included in online hot standby pressure control device and spare online hot standby pressure control device.Wherein one
Hot standby pressure control device is included in pressure regulation tap line 5-1 and the first voltage regulator controllers Lu Yong online.With pressure regulation branch
The road both ends pipeline 5-1 are connect with the first header 4 and the second header 7 respectively, with being sequentially connected in series on pressure regulation tap line 5-1
One technique ball valve 5-2, the first process bands executing agency ball valve 5-3, the first monitoring pressure-regulating valve 5-4, the first operating pressure tune
Save valve 5-5, first thermometer 5-23, first pressure transmitter 5-24, second pressure transmitter 5-25, third pressure inverting on the spot
Device 5-26, first check-valve 5-6 and the second technique ball valve 5-7.First voltage regulator controllers include and first monitors pressure-regulating valve
The 5-4 and first pressure controller 5-27 of first pressure transmitter 5-24 connection and the first operating pressure regulating valve 5-5 and second
The second pressure controller 5-28 of pressure transmitter 5-25 connection and with the first process bands executing agency ball valve 5-3 and third
The high relay 5-29 of first pressure of pressure transmitter 5-26 connection.
In addition spare online hot standby pressure control device includes spare pressure regulation tap line 6-1 and the second Regulation Control all the way
Device.The spare both ends pressure regulation tap line 6-1 are connect with the first header 4 and the second header 7 respectively, spare pressure regulation tap line 6-1
On be sequentially connected in series the 7th technique ball valve 6-2, the second process bands executing agency ball valve 6-3, second monitoring pressure-regulating valve 6-4,
Second operating pressure regulating valve 6-5, second thermometer 6-23, the 4th pressure transmitter 6-24, the 5th pressure transmitter 6- on the spot
25, the 6th pressure transmitter 6-26, second check-valve 6-6 and the 8th technique ball valve 6-7.Second voltage regulator controllers include and second
Monitor the third pressure controller 6-27 and the second operating pressure of pressure-regulating valve 6-4 and the 4th pressure transmitter 6-24 connection
4th pressure controller 6-28 of regulating valve 6-5 and the 5th pressure transmitter 6-25 connection and machine is executed with the second process bands
The high relay 6-29 of second pressure of structure ball valve 6-3 and the 6th pressure transmitter 6-26 connection.
Wherein, the first header 4 is connect with 2 one end of the first process pipelines, 2 other end of the first process pipelines and first flange 1
Connection, the second header 7 are connect with 8 one end of the second process pipelines, and 8 other end of the second process pipelines is connect with second flange 9.First
The both ends of header 4 and the second header 7 are all connected with pipe cap 3.
First technique ball valve 5-2 is equipped with the first by-pass line 5-10, and first one end by-pass line 5-10 is connected to first
Between header 4 and the first technique ball valve 5-2 on pressure regulation tap line 5-1, the connection of the first by-pass line 5-10 other end
Between the first technique ball valve 5-2 and the first process bands executing agency ball valve 5-3 on pressure regulation tap line 5-1.First
Along natural gas flow to being sequentially connected in series third technique ball valve 5-8 and the first shut-off valve 5-9 on by-pass line 5-10.
First one end blow-down pipe 5-11 is connected to the first technique ball valve 5-2 and the first process bands executing agency ball valve 5-3
Between on pressure regulation tap line 5-1, the first blow-down pipe 5-11 other end is vented by third flange 5-14 and yard
System is connected.Along natural gas flow to being sequentially connected in series the 4th technique ball valve 5-12 and the second shut-off valve 5- on first blow-down pipe 5-11
13.Second one end blow-down pipe 5-15 is connected to the monitoring of the first process bands executing agency ball valve 5-3 and first pressure-regulating valve 5-4
Between on pressure regulation tap line 5-1, the second blow-down pipe 5-15 other end is vented by the 4th flange 5-18 and yard
System is connected.Along natural gas flow to being sequentially connected in series the 5th technique ball valve 5-16 and third shut-off valve 5- on second blow-down pipe 5-15
17.The one end third blow-down pipe 5-19 be connected between third pressure transmitter 5-26 and first check-valve 5-6 with pressure regulation
On tap line 5-1, the third blow-down pipe 5-19 other end is connected by the 5th flange 5-22 with yard blowdown system.Third is put
Along natural gas flow to being sequentially connected in series the 6th technique ball valve 5-20 and the 4th shut-off valve 5-21 on blank pipe line 5-19.
7th technique ball valve 6-2 is equipped with the second by-pass line 6-10, and second one end by-pass line 6-10 is connected to first
On spare pressure regulation tap line 6-1 between header 4 and the 7th technique ball valve 6-2, the connection of the second by-pass line 6-10 other end
On spare pressure regulation tap line 6-1 between the 7th technique ball valve 6-2 and the second process bands executing agency ball valve 6-3.Second
Along natural gas flow to being sequentially connected in series the 9th technique ball valve 6-8 and the 5th shut-off valve 6-9 on by-pass line 6-10.
4th one end blow-down pipe 6-11 is connected to the 7th technique ball valve 6-2 and the second process bands executing agency ball valve 6-3
Between spare pressure regulation tap line 6-1 on, the 4th blow-down pipe 6-11 other end is vented by the 6th flange 6-14 and yard
System is connected.Along natural gas flow to being sequentially connected in series the tenth technique ball valve 6-12 and the 6th shut-off valve 6- on 4th blow-down pipe 6-11
13.5th one end blow-down pipe 6-15 is connected to the monitoring of the second process bands executing agency ball valve 6-3 and second pressure-regulating valve 6-4
Between spare pressure regulation tap line 6-1 on, the 5th blow-down pipe 6-15 other end is vented by the 7th flange 6-18 and yard
System is connected.Along natural gas flow to being sequentially connected in series the 11st technique ball valve 6-16 and the 7th shut-off valve on 5th blow-down pipe 6-15
6-17.6th one end blow-down pipe 6-19 connects the spare pressure regulation between the 6th pressure transmitter 6-26 and second check-valve 6-6
On tap line 6-1, the 6th blow-down pipe 6-19 other end is connected by eight treating observances orchid 6-22 with yard blowdown system.6th puts
Along natural gas flow to being sequentially connected in series the 12nd technique ball valve 6-20 and the 8th shut-off valve 6-21 on blank pipe line 6-19.
First pressure transmitter 5-24 is connect by first instrument cable 5-30 with first pressure controller 5-27, the first prison
Pressure control force regulating valve 5-4 is connect by the 4th instrument cable 5-33 with first pressure controller 5-27, second pressure transmitter 5-
25 are connect by second instrument cable 5-31 with second pressure controller 5-28, and the first operating pressure regulating valve 5-5 passes through the 5th
Instrument cable 5-34 is connect with second pressure controller 5-28, third pressure transmitter 5-26 by third instrument cable 5-32 with
The high relay 5-29 connection of first pressure, the first process bands executing agency ball valve 5-3 pass through the 6th instrument cable 5-35 and the
The high relay 5-29 connection of one pressure.4th pressure transmitter 6-24 is controlled by the 7th instrument cable 6-30 and third pressure
Device 6-27 connection, the second monitoring pressure-regulating valve 6-4 are connect by the tenth instrument cable 6-33 with third pressure controller 6-27,
5th pressure transmitter 6-25 is connect by the 8th instrument cable 6-31 with the 4th pressure controller 6-28, the second operating pressure tune
Section valve 6-5 is connect by the 11st instrument cable 6-34 with the 4th pressure controller 6-28, and the 6th pressure transmitter 6-26 passes through
9th instrument cable 6-32 is connect with the high relay 6-29 of second pressure, and the second process bands executing agency ball valve 6-3 passes through the
12 instrument cable 6-35 are connect with the high relay 6-29 of second pressure.
Wherein, the first process bands executing agency ball valve 5-3 and the second process bands executing agency ball valve 6-3 is that full-bore is double
Guan Shuan lets out valve, and failure is closed；First monitoring pressure-regulating valve 5-4 and the second monitoring pressure-regulating valve 6-4 is that failure is closed；First
Operating pressure regulating valve 5-5 and the second operating pressure regulating valve 6-5 is that failure is opened.
With the third pressure transmitter 5-26 on pressure regulation tap line 5-1 downstream and spare pressure regulation tap line 6-1
On the downstream of the 6th pressure transmitter 6-26 be respectively provided with first check-valve 5-6 and second check-valve 6-6, prevent with tune
The pressure anti-channeling for pressing tap line 5-1 and spare pressure regulation tap line 6-1 guarantees with pressure regulation tap line 5-1 and spare tune
It presses the pressure of tap line 6-1 acquisition respectively independent, avoids downstream pressure superelevation while triggering in all pressure regulation tap lines
Technique block valve.All shut-off valves of the invention are all made of axial flow type check valve.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of gas pipeline hot standby pressure regulation method online, which is characterized in that this method comprises:
It is connected between the first header (4) and the second header (7) with pressure regulation tap line (5-1) and spare pressure regulation tap line
(6-1), and first header (4) is connect with the first process pipelines (2), by second header (7) and the second process duct
Line (8) connection；
Described with being sequentially connected in series the first technique ball valve (5-2), the first process bands executing agency on pressure regulation tap line (5-1)
Ball valve (5-3), first monitor the thermometer (5- on the spot of pressure-regulating valve (5-4), the first operating pressure regulating valve (5-5), first
23), first pressure transmitter (5-24), second pressure transmitter (5-25), third pressure transmitter (5-26), first check-valve
(5-6) and the second technique ball valve (5-7)；
By first pressure controller (5-27) and first monitoring pressure-regulating valve (5-4) and the first pressure transmitter
(5-24) connection, by second pressure controller (5-28) and the first operating pressure regulating valve (5-5) and the second pressure
Transmitter (5-25) connection, by the high relay (5-29) of first pressure and first process bands executing agency ball valve (5-3)
It is connected with the third pressure transmitter (5-26)；
The 7th technique ball valve (6-2) is sequentially connected in series on the spare pressure regulation tap line (6-1), the second process bands execute machine
Structure ball valve (6-3), second monitor the thermometer (6- on the spot of pressure-regulating valve (6-4), the second operating pressure regulating valve (6-5), second
23), the 4th pressure transmitter (6-24), the 5th pressure transmitter (6-25), the 6th pressure transmitter (6-26), second check-valve
(6-6) and the 8th technique ball valve (6-7)；
By third pressure controller (6-27) and second monitoring pressure-regulating valve (6-4) and the 4th pressure transmitter
(6-24) connection, by the 4th pressure controller (6-28) and the second operating pressure regulating valve (6-5) and the 5th pressure
Transmitter (6-25) connection, by the high relay (6-29) of second pressure and second process bands executing agency ball valve (6-3)
It is connected with the 6th pressure transmitter (6-26)；
Natural gas inputs first header (4), and passes through the first technique ball valve (5-2) and the 7th technique ball valve
(6-2) respectively enters described with pressure regulation tap line (5-1) and the spare pressure regulation tap line (6-1)；
The first pressure controller (5-27), the second pressure controller (5-28), first pressure height is set separately
High relay (5-29), the third pressure controller (6-27), the 4th pressure controller (6-28) and second pressure
The pressure set points of Li Gaogao relay (6-29), and ensure that the first operating pressure regulating valve (5-5) and described second is moved
The pressure set points for making pressure-regulating valve (6-5) are different；
SCADA system is according to the pressure of the first operating pressure regulating valve (5-5) and the second operating pressure regulating valve (6-5)
The selection of power setting value is described to carry out online pressure regulation with pressure regulation tap line (5-1) or the spare pressure regulation tap line (6-1)；
After online pressure regulation, natural gas is exported by second header (7).
2. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that when selection is described with tune
When tap line (5-1) being pressed to carry out online pressure regulation, the first pressure controller (5-27), the second pressure controller (5-
28) and the high relay (5-29) of the first pressure controls the first monitoring pressure-regulating valve according to pressure set points respectively
The valve opening of (5-4), the first operating pressure regulating valve (5-5) and first process bands executing agency ball valve (5-3)；
When selecting the spare pressure regulation tap line (6-1) to carry out online pressure regulation, the third pressure controller (6-27), institute
State the 4th pressure controller (6-28) and described in the high relay (6-29) of two pressure controls respectively according to pressure set points
Second monitoring pressure-regulating valve (6-4), the second operating pressure regulating valve (6-5) and second process bands executing agency ball
The valve opening of valve (6-3).
3. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that first process bands are held
It is row mechanism ball valve (5-3), first monitoring pressure-regulating valve (5-4), the first operating pressure regulating valve (5-5), described
Second process bands executing agency ball valve (6-3), second monitoring pressure-regulating valve (6-4), second operating pressure are adjusted
The flow signal of valve (6-5) is sent into SCADA system progress real-time monitoring after accessing instrument junction box.
4. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that the first pressure pick-up
First pressure control described in device (5-24), the second pressure transmitter (5-25) and third pressure transmitter (5-26) real-time monitoring
Device (5-27) processed, the second pressure controller (5-28) and the high relay (5-29) of the first pressure pressure value and will
Pressure signal is sent into SCADA system progress real-time monitoring after accessing instrument junction box；
4th pressure transmitter (6-24), the 5th pressure transmitter (6-25) and the 6th pressure transmitter (6-
26) third pressure controller (6-27), the 4th pressure controller (6-28) described in real-time monitoring and the second pressure are high
Pressure signal is simultaneously accessed after instrument junction box and is sent into SCADA system and is supervised in real time by the pressure value of high relay (6-29)
It surveys.
5. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that the described first temperature on the spot
The temperature signal of table (5-23) and the described second thermometer (6-23) on the spot access after instrument junction box be sent into SCADA system into
Row real-time monitoring.
6. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that setting pressure set points
When: it is SP, the pressure of the first pressure controller (5-27) by the pressure set points of the second pressure controller (5-28)
Setting value is SP+ △ P1, and the pressure set points of the high relay (5-29) of the first pressure are SP+ △ P2, the 4th pressure
The pressure set points of force controller (6-28) are SP- △ P1, and the pressure set points of the third pressure controller (6-27) are SP+
△ P1, the pressure set points of the high relay (6-29) of the second pressure are SP+ △ P2；
Wherein, SP+ △ P2 is greater than SP+ △ P1, SP+ △ P1 and is greater than SP, and SP is greater than SP- △ P1.
7. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that further include: to it is described
It is vented with the blow-down pipe in pressure regulation tap line (5-1) and the spare pressure regulation tap line (6-1).
8. gas pipeline according to claim 7 hot standby pressure regulation method online, which is characterized in that the first technique ball valve
Passing through institute with the natural gas on pressure regulation tap line (5-1) between (5-2) and the first process bands executing agency ball valve (5-3)
State the first blow-down pipe (5-11) being arranged between the first technique ball valve (5-2) and the first process bands executing agency ball valve (5-3)
It is vented；
Between first process bands executing agency ball valve (5-3) and first monitoring pressure-regulating valve (5-4) with tune
The natural gas on tap line (5-1) is pressed to press by first process bands executing agency ball valve (5-3) and first monitoring
The second blow-down pipe (5-15) being arranged between force regulating valve (5-4) is vented；
Between the first operating pressure regulating valve (5-5) and the first check-valve (5-6) with pressure regulation tap line (5-
1) natural gas on by be arranged between the first operating pressure regulating valve (5-5) and the first check-valve (5-6)
Three blow-down pipes (5-19) are vented.
9. gas pipeline according to claim 7 hot standby pressure regulation method online, which is characterized in that the 7th technique ball valve
The natural gas on spare pressure regulation tap line (6-1) between (6-2) and the second process bands executing agency ball valve (6-3) passes through institute
State the 4th blow-down pipe (6-11) being arranged between the 7th technique ball valve (6-2) and the second process bands executing agency ball valve (6-3)
It is vented；
Spare tune between second process bands executing agency ball valve (6-3) and second monitoring pressure-regulating valve (6-4)
The natural gas on tap line (6-1) is pressed to press by second process bands executing agency ball valve (6-3) and second monitoring
The 5th blow-down pipe (6-15) being arranged between force regulating valve (6-4) is vented；
Spare pressure regulation tap line between the second operating pressure regulating valve (6-5) and the 7th shut-off valve (6-17)
Natural gas on (6-1) between the second operating pressure regulating valve (6-5) and the 7th shut-off valve (6-17) by being arranged
The 6th blow-down pipe (6-19) be vented.
10. gas pipeline according to claim 1 hot standby pressure regulation method online, which is characterized in that when first technique
When ball valve (5-2) breaks down, natural gas passes through the first by-pass line (5-10) for being arranged on the first technique ball valve (5-2)
Into described with pressure regulation tap line (5-1)；
When the 7th technique ball valve (6-2) is broken down, natural gas is by being arranged on the 7th technique ball valve (6-2)
Second by-pass line (6-10) enters the spare pressure regulation tap line (6-1).
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| CN201811303101.0A CN109282145B (en) | 2018-11-02 | 2018-11-02 | Online hot standby pressure regulating method for gas transmission pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023155275A1 (en) * | 2022-02-21 | 2023-08-24 | 烟台杰瑞石油装备技术有限公司 | Pressure regulating system and pressure regulating system control method |
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Address after: 100120 Beijing Xicheng District six laying Kang Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: China Petroleum Pipeline Engineering Co.,Ltd. Applicant after: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100120 Beijing Xicheng District six laying Kang Applicant before: China National Petroleum Corp. Applicant before: China Petroleum Pipeline Engineering Co.,Ltd. Applicant before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Effective date of registration: 20191225 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: China Petroleum Pipeline Engineering Co.,Ltd. Applicant after: CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100120 Beijing Xicheng District six laying Kang Applicant before: CHINA NATIONAL PETROLEUM Corp. Applicant before: China Petroleum Pipeline Engineering Co.,Ltd. Applicant before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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