CN209397169U - A kind of dehydration sled control system - Google Patents
A kind of dehydration sled control system Download PDFInfo
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- CN209397169U CN209397169U CN201821947813.1U CN201821947813U CN209397169U CN 209397169 U CN209397169 U CN 209397169U CN 201821947813 U CN201821947813 U CN 201821947813U CN 209397169 U CN209397169 U CN 209397169U
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- signal
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- liquid level
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Abstract
The utility model discloses a kind of dehydrations to prize control system, comprising: coalescing separator, absorption tower, flash tank, reboiler, signal pickup assembly, multiple valves and control device；Signal pickup assembly and valve are provided on coalescing separator, absorption tower, the flash tank, reboiler；Control device and signal pickup assembly, multiple valve communication connections are also connected with warning device and display device on control device.The signal that control device is used to transmit signal pickup assembly judges, if the temperature signal of the liquid level signal of the liquid level signal of coalescing separator, flash tank, reboiler, the pressure signal on absorption tower and temperature signal are more than its corresponding threshold value, control device controls warning device alarm, and alarm signal is shown by display device, corresponding valve opening or closing are controlled simultaneously, operation complexity is reduced with this, mentions high control precision.
Description
Technical field
The utility model relates to natual gas dehydrate units, and in particular to a kind of dehydration sled control system.
Background technique
During natural gas transportation, natural gas must carry out effectively dehydration before entering gas pipeline, because
For water vapour can be precipitated from natural gas when pressure and temperature changes in gas pipeline, forms liquid water and be gathered in gas transmission
Pipeline lower, can reduce effective conveying section of gas pipeline, increase transporting resistance, increase power consumption, and it is serious when meeting
Block valve and gas pipeline influence steady steam supply.
It in the process of dehydration, is controlled respectively valve by multiple control device automatic or manuals,
It is not only complicated for operation, and control precision is lower, can not achieve the centralized control to dehydration sled system.
Utility model content
The purpose of the utility model is to overcome the above-mentioned deficiencies in the presence of the prior art, provide a kind of dehydration sled control
System.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme:
Control system is prized in a kind of dehydration, comprising: coalescing separator, absorption tower, flash tank, reboiler, signal pickup assembly,
Multiple valves and control device；The coalescing separator, the absorption tower, the flash tank, the reboiler are sequentially connected；?
The coalescing separator, the flash tank, is provided with the signal pickup assembly and valve on the reboiler at the absorption tower
Door.
The control device and the signal pickup assembly, multiple valve communication connections, on the control device also
It is connected with warning device and display device.
The signal pickup assembly is used to acquire the liquid level letter of the liquid level signal of the coalescing separator, the flash tank
Number, the temperature signal of the reboiler, the absorption tower pressure signal and temperature signal, and by the liquid of the coalescing separator
Position signal, the liquid level signal of the flash tank, the temperature signal of the reboiler, the pressure signal on the absorption tower and temperature letter
Number it is transmitted to the control device.
The control device is by the liquid level signal of the coalescing separator, the liquid level signal of the flash tank, the reboiling
The temperature signal of device, the pressure signal on the absorption tower and its corresponding threshold value of temperature signal are compared, if either signal
Beyond its corresponding threshold value, then the control device generates an alarm signal, and the control device passes through the alarm signal
Control the warning device alarm；Also, the control device shows warning message by the display device, controls simultaneously
Corresponding valve opening or closing.
Preferably, the signal pickup assembly includes first pressure transmitter, second pressure transmitter, the first temperature pick-up
Device, second temperature transmitter, the first side dress band teletransmission magnetic rotary column liquidometer, the first differential pressure transmitter；Wherein, the first pressure
Transmitter is used to detect the admission pressure on the absorption tower, and the second pressure transmitter detects the air pressure out on the absorption tower
Power, first differential pressure transmitter detect the absorption tower differential pressure, and first temperature transmitter is for detecting absorption tower
Intake air temperature, the second temperature transmitter is for detecting lean solution inlet temperature of stabilizer, the first side dress band teletransmission magnetic rotary column liquid level
Count the liquid level for detecting the coalescing separator.
The signal pickup assembly further includes third pressure transmitter, the 4th pressure transmitter, third temperature transmitter,
Four temperature transmitters, double flanges differential pressure transmitter, flame detector；The third pressure transmitter is used to detect the pressure of fuel gas
Power, the 4th pressure transmitter are used to detect the pressure of the flash tank, and the third temperature transmitter is described for detecting
The temperature of reboiler, the 4th temperature transmitter are used for detecting rectifying column tower top temperature, the double flanges differential pressure transmitter
In the liquid level for detecting the flash tank；The flame detector is used to detect the flame of female fire and main fire.
Preferably, the valve includes coalescing separator tapping valve, flash tank Liquid level adjusting valve, reboiler temperature control adjusting
Valve, fuel gas quick action emergency valve, igniter solenoid valve.
Preferably, the flash tank Liquid level adjusting valve and the reboiler temperature control adjusting valve are normally-closed pneumatic regulating valve.
Preferably, the fiery black out signal of mother that the control device is transmitted according to the flame detector, controls the fuel
Gas quick action emergency valve, the coalescing separator tapping valve, the flash tank Liquid level adjusting valve and the reboiler temperature control adjusting valve
It closes.
Preferably, the control device is PLC control device, including programmable controller, distributor breaker, switch electricity
Source, intermediate relay and Surge Protector.
Preferably, the display device is used to show the liquid level of the liquid level signal of the coalescing separator, the flash tank
Signal, the temperature signal of the reboiler, the absorption tower pressure signal and temperature signal.
Preferably, the display device is liquid crystal touch screen.
Preferably, the warning device is combined aural and visual alarm.
Compared with prior art, the utility model has the beneficial effects that
1. the liquid level signal of coalescing separator acquired by signal pickup assembly, the liquid level signal of flash tank, reboiler
Temperature signal, absorption tower pressure signal and temperature signal, can make control device quickly, it is accurate, obtain in real time it is each
The run signal of equipment issues accurately control instruction convenient for control device.
2. control device by display device display alarm information, can quickly recognize abort situation, it is easy to repair and
Debugging.
3. in the utility model, by a set of control system to coalescing separator, absorption tower, flash tank, reboiler temperature
Degree or liquid level signal carry out concentrated collection and processing, reduce operation complexity, mention high control precision.
Detailed description of the invention
Fig. 1 is that control system architecture figure is prized in a kind of dehydration.
Specific embodiment
The utility model is described in further detail below with reference to test example and specific embodiment.But it should not be by this
The range for being interpreted as the above-mentioned theme of the utility model is only limitted to embodiment below, all to be realized based on the content of the present invention
Technology belongs to the scope of the utility model.
Embodiment 1
The utility model, a kind of dehydration sled control system, comprising: coalescing separator, absorption tower, flash tank, reboiler, letter
Number acquisition device, multiple valves and control device；Wherein, coalescing separator, absorption tower, flash tank, reboiler are sequentially connected；?
Coalescing separator, flash tank, is provided with signal pickup assembly and valve on reboiler at absorption tower.
Control device and signal pickup assembly, multiple valve communication connections, be also connected on control device warning device and
Display device.
Signal pickup assembly is used to acquire the temperature of the liquid level signal of coalescing separator, the liquid level signal of flash tank, reboiler
Spend signal, absorption tower pressure signal and temperature signal, and by the liquid level signal of coalescing separator, flash tank liquid level signal,
The temperature signal of reboiler, the pressure signal on absorption tower and temperature signal are transmitted to control device.
Control device by the liquid level signal of coalescing separator, the liquid level signal of flash tank, reboiler temperature signal, absorb
Its corresponding threshold value of pressure signal and temperature signal of tower is compared, if either signal exceeds its corresponding threshold value, is controlled
Device processed generates an alarm signal, and control device controls warning device by alarm signal and alarms；Also, control device will be reported
Alert information is shown by display device, while controlling corresponding valve opening or closing.
Warning message includes faulty equipment information, fault location information and fault reason information
As shown in Figure 1, signal pickup assembly includes first pressure transmitter, second pressure transmitter, the first temperature pick-up
Device, second temperature transmitter, the first side dress band teletransmission magnetic rotary column liquidometer, the first differential pressure transmitter；Wherein, first pressure pick-up
Device is used to detect the admission pressure on absorption tower, and second pressure transmitter detects the outlet pressure on the absorption tower, the first differential pressure
Transmitter detection absorption tower differential pressure, the first temperature transmitter are used to detect the intake air temperature on absorption tower, second temperature transmitter
For detecting lean solution inlet temperature of stabilizer, the first side dress is used to detect the liquid level of coalescing separator with teletransmission magnetic rotary column liquidometer.
Signal pickup assembly further includes third pressure transmitter, the 4th pressure transmitter, third temperature transmitter, the 4th temperature
Spend transmitter, double flanges differential pressure transmitter, flame detector；Third pressure transmitter is used to detect the pressure of fuel gas, and the 4th
Pressure transmitter is used to detect the pressure of flash tank, and third temperature transmitter is used to detect the temperature of reboiler, and the 4th temperature becomes
Device is sent to be used to detect the liquid level of flash tank for detecting rectifying column tower top temperature, double flanges differential pressure transmitter；Flame detector is used
In the flame of detection female fire and main fire.
Valve includes that coalescing separator tapping valve, flash tank Liquid level adjusting valve, reboiler temperature control adjusting valve, fuel gas are urgent
Stop valve, igniter solenoid valve.
For example, coalescing separator tapping valve is in automatic mode, its constant opening degree is set to exist by proportion adjustment control
250mm.Flash tank Liquid level adjusting valve is normally-closed pneumatic regulating valve, in automatic mode, makes its aperture by proportion adjustment control
It is constant in 900mm.Reboiler temperature control adjusting valve is normally-closed pneumatic regulating valve, and setting reboiler controls temperature, default value 200
DEG C, than regulating and controlling reboiler temperature control adjusting valve processed.Fuel gas quick action emergency valve is electrical ball valve in remote emergency shutdown, blowing out, mother
It is closed when fiery unexpected extinguishing.Igniter solenoid valve, under automatic mode, in system without overpressure alarm, fuel gas low pressure alarming, reboiler
Start when no low liquid level warning, the retention time started every time is 5 seconds by operation, system initial value is preset, and is become than igniting
Depressor, which lags 2 seconds, to be started.Such as system does not detect flame after the completion of the starting time, then closes immediately.After the completion of the starting time
Such as system detection to flame, then closed by setting time delays (system initial value is 60 seconds).Into before delay timing, boundary is operated
Bypass valve is opened in face prompt.Guard time is by setting after loss of ignition (system initial value is 12 seconds).Ignition transformer is each
The retention time of starting is 7 seconds by operation, system initial value is preset, and is started than igniter solenoid valve first 2 seconds.
For example, in automatic ignition starting, control system fault-free and alarm, as absorption tower admission pressure is high, absorption tower
Outlet pressure is high, flash tank pressure is high, surge tank liquid level is low etc., and checks that bypass valve is in close state, will button box on the spot
Knob switching<automatic>state.Pressing button box<starting ignition>button, system on the spot will automatically turn on gas cut off valve.Combustion gas
Inlet open in place after, system will first open ignition transformer, and delay 2S opens igniter solenoid valve, and igniting transformation is closed after 7S
Device；Whether detection igniting succeeds after 12S, and opening combustion gas bypass valve is prompted to close igniting electromagnetism after 60S if lighting a fire successfully
Valve does not open combustion gas bypass valve flame for automatic distinguishing manually such as in 60S, and system will test flame-out alarm and close combustion gas
Stop valve；Flame-out alarm is shown if loss of ignition, and closes gas cut off valve, and bypass valve is turned off manually.Complete igniting
After step, system adjusts flash tank Liquid level adjusting valve, reboiler temperature control adjusting valve, coalescing separator automatically according to set value calculation
The aperture of tapping valve will be in full off state when system is in blowing out, that is, fray-out of flame.
Under manual mode, check that main fiery manually-operated gate and bypass valve are in close state.It will cut button box knob on the spot
Change state<manually>.Button box<gas cut off valve opening>button on the spot is pressed, after gas cut off valve reaches position.Press on the spot by
Button case<starting ignition>button presses button box on the spot after 10S and<stops igniting>button, and open bypass valve in 10S.It sees
Examine pilot flame whether normal signal, if pilot flame is normal, slow manually opened main fiery manually-operated gate.If abnormal
Button box<gas cut off valve closing>button on the spot or<emergency stop>button are pressed, and bypass valve is turned off manually.
Note: manual mode in debugging or unconventional situation only for using, and system is in without any protection shape under the mode
State.Flash tank Liquid level adjusting valve, reboiler temperature control adjusting valve, coalescing separator tapping valve are in full off state.
Flash tank Liquid level adjusting valve and reboiler temperature control adjusting valve are normally-closed pneumatic regulating valve.
Control device is according to the fiery black out signal of mother that flame detector transmits, control fuel gas quick action emergency valve, coalescence point
It is closed from device tapping valve, flash tank Liquid level adjusting valve and reboiler temperature control adjusting valve.
Control device is PLC control device, including Siemens's S7300 programmable controller, distributor breaker, switch electricity
Source, intermediate relay and Surge Protector.
The temperature letter of the liquid level signal of coalescing separator, the liquid level signal of flash tank, reboiler is shown on the display apparatus
Number, the pressure signal and temperature signal on absorption tower.Wherein, display device is liquid crystal touch screen, and warning device is combined aural and visual alarm.
Claims (9)
1. control system is prized in a kind of dehydration characterized by comprising coalescing separator, absorption tower, flash tank, reboiler, signal
Acquisition device, multiple valves and control device；The coalescing separator, the absorption tower, the flash tank, the reboiler according to
Secondary connection；The signal acquisition is provided on the coalescing separator, the absorption tower, the flash tank, the reboiler
Device and valve；
The control device and the signal pickup assembly, multiple valve communication connections are also connected on the control device
There are warning device and display device；
The signal pickup assembly is for acquiring the liquid level signal of the coalescing separator, the liquid level signal of the flash tank, institute
The temperature signal of reboiler, the pressure signal and temperature signal on the absorption tower are stated, and the liquid level of the coalescing separator is believed
Number, the temperature signal of the liquid level signal of the flash tank, the reboiler, the pressure signal on the absorption tower and temperature signal pass
Transport to the control device；
The control device is by the liquid level signal of the coalescing separator, the liquid level signal of the flash tank, the reboiler
Temperature signal, the pressure signal on the absorption tower and its corresponding threshold value of temperature signal are compared, if either signal exceeds
Its corresponding threshold value, then the control device generates an alarm signal, and the control device is controlled by the alarm signal
The warning device alarm；Also, the control device shows warning message by the display device, while controlling corresponding
Valve opening or closing.
2. control system is prized in a kind of dehydration according to claim 1, which is characterized in that the signal pickup assembly includes the
One pressure transmitter, second pressure transmitter, the first temperature transmitter, second temperature transmitter, the first side dress band teletransmission magnetic turn
Column liquid level meter, the first differential pressure transmitter；Wherein, the first pressure transmitter is used to detect the admission pressure on the absorption tower,
The second pressure transmitter detects the outlet pressure on the absorption tower, and first differential pressure transmitter detects the absorption
Tower differential pressure, first temperature transmitter are used to detect the intake air temperature on absorption tower, and the second temperature transmitter is for detecting
Lean solution inlet temperature of stabilizer, the first side dress are used to detect the liquid level of the coalescing separator with teletransmission magnetic rotary column liquidometer；
The signal pickup assembly further includes third pressure transmitter, the 4th pressure transmitter, third temperature transmitter, the 4th temperature
Spend transmitter, double flanges differential pressure transmitter, flame detector；The third pressure transmitter is used to detect the pressure of fuel gas,
4th pressure transmitter is used to detect the pressure of the flash tank, and the third temperature transmitter is for detecting the reboiling
The temperature of device, the 4th temperature transmitter is for detecting rectifying column tower top temperature, and the double flanges differential pressure transmitter is for examining
Survey the liquid level of the flash tank；The flame detector is used to detect the flame of female fire and main fire.
3. control system is prized in a kind of dehydration according to claim 2, which is characterized in that the valve includes coalescing separator
Tapping valve, flash tank Liquid level adjusting valve, reboiler temperature control adjusting valve, fuel gas quick action emergency valve, igniter solenoid valve.
4. control system is prized in a kind of dehydration according to claim 3, which is characterized in that the flash tank Liquid level adjusting valve and
The reboiler temperature control adjusting valve is normally-closed pneumatic regulating valve.
5. control system is prized in a kind of dehydration according to claim 3, which is characterized in that the control device is according to the fire
The fiery black out signal of mother of flame detector transmission controls the fuel gas quick action emergency valve, the coalescing separator tapping valve, described
Flash tank Liquid level adjusting valve and the reboiler temperature control adjusting valve are closed.
6. control system is prized in a kind of dehydration according to claim 1 or 5, which is characterized in that the control device is PLC control
Device processed, including programmable controller, distributor breaker, Switching Power Supply, intermediate relay and Surge Protector.
7. control system is prized in a kind of dehydration according to claim 1, which is characterized in that the display device is for showing institute
State the liquid level signal of coalescing separator, the liquid level signal of the flash tank, the temperature signal of the reboiler, the absorption tower
Pressure signal and temperature signal.
8. control system is prized in a kind of dehydration according to claim 1 or claim 7, which is characterized in that the display device is liquid crystal
Touch screen.
9. control system is prized in a kind of dehydration according to claim 1, which is characterized in that the warning device is sound-light alarm
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821947813.1U CN209397169U (en) | 2018-11-23 | 2018-11-23 | A kind of dehydration sled control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821947813.1U CN209397169U (en) | 2018-11-23 | 2018-11-23 | A kind of dehydration sled control system |
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| Publication Number | Publication Date |
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| CN209397169U true CN209397169U (en) | 2019-09-17 |
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| CN201821947813.1U Active CN209397169U (en) | 2018-11-23 | 2018-11-23 | A kind of dehydration sled control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091817A (en) * | 2021-04-06 | 2021-07-09 | 重庆大学 | Triethylene glycol dewatering device state monitoring and fault diagnosis system |
-
2018
- 2018-11-23 CN CN201821947813.1U patent/CN209397169U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091817A (en) * | 2021-04-06 | 2021-07-09 | 重庆大学 | Triethylene glycol dewatering device state monitoring and fault diagnosis system |
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