CN209302567U - Improved alkali liquor preparation control device - Google Patents
Improved alkali liquor preparation control device Download PDFInfo
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- CN209302567U CN209302567U CN201821736450.7U CN201821736450U CN209302567U CN 209302567 U CN209302567 U CN 209302567U CN 201821736450 U CN201821736450 U CN 201821736450U CN 209302567 U CN209302567 U CN 209302567U
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- pid regulator
- soft water
- concentrated base
- regulating valve
- dcs system
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Abstract
The utility model discloses improved alkali liquor preparation control devices；Wherein, the flowmeter connected by soft water pipeline, DCS system PID regulator I is sequentially connected with soft water regulating valve by signal, the flowmeter of concentrated base pipeline connection, DCS system PID regulator I is sequentially connected with concentrated base regulating valve by signal, proportional controller is respectively connected with DCS system PID regulator I and DCS system PID regulator II by signal wire, the soft water flux of addition is controlled with this, and the flow that control concentrated base in proportion is added, stability of flow is controlled by PID regulator, the proportion of lye is just able to maintain stabilization, fluid level transmitter interlocked control soft water and concentrated base regulating valve, guarantee the Liquid level of surge-tank in the range of requiring, burden control precision can be greatly improved in this way.
Description
Technical field
The utility model belongs to the technical field of chemical industry, is related to viscose staple fiber production process material proportion production dress
It sets, in particular to improved alkali liquor preparation control device.
Background technique
The allotment of lye is an important process link and viscose staple fibre production in viscose staple fiber production process
First critical process, the quality of the technology controlling and process directly affects viscose products quality, and then influences spinning quality.Existing alkali
Liquid proportioning controller, as shown in Figure 1, soft water accesses the entrance of static mixer by regulating valve 6, static mixer 4 goes out
Mouth connection surge-tank, surge-tank are equipped with fluid level transmitter, and fluid level transmitter is by DCS system PID regulator I and connects soft water
The outlet of regulating valve connection, surge-tank connects circulating pump, and circulating pump connects surge-tank by heat exchanger；Concentrated base is respectively connected to two
The entrance of regulating valve, wherein the entrance of the outlet connection static mixer of a regulating valve, the connection of static mixer and surge-tank
Place is equipped with densitometer, by signal wire according to along connection between the densitometer, DCS system PID regulator II and regulating valve；It is another
The entrance of the outlet connection circulating pump of regulating valve, and densitometer is installed in the junction of heat exchanger and surge-tank, the densitometer,
By signal wire according to along connection between DCS system PID regulator II and regulating valve.Since variable density lags behind soft water and concentrated base
Changes in flow rate, density domination are unable to fast and stable and get off, to cannot guarantee that lye control is stablized in time.
Summary of the invention
The purpose of this utility model is in view of the problems of the existing technology, to improve mixed alkali liquor distributing precision, Jin Erti
High material quality, while reducing and detecting and controlling equipment, investment reduction.
The utility model is achieved through the following technical solutions above-mentioned purpose, improved alkali liquor preparation control device, comprising:
Alkaline liquor make-up tank, static mixer, regulating valve, flowmeter, DCS proportional controller, DCS system PID regulator I, DCS system
Static mixer is accessed by soft water pipeline in PID regulator II, external soft water source, and external concentrated base source is accessed quiet by concentrated base pipeline
It is respectively mounted on state mixer, soft water pipeline and concentrated base pipeline equipped with regulating valve, flowmeter, static mixer outlet connects lye tune
Slot allocation, alkaline liquor make-up tank are equipped with fluid level transmitter, and the outlet of alkaline liquor make-up tank connects circulating pump, and circulating pump is connected by heat exchanger
Connect alkaline liquor make-up tank, the junction of heat exchanger and alkaline liquor make-up tank is equipped with densitometer；Flowmeter, the DCS of soft water pipeline connection
System PID regulator I is sequentially connected with the regulating valve on soft water pipeline by signal, the flowmeter of concentrated base pipeline connection, DCS system
System PID regulator II is sequentially connected with the regulating valve on concentrated base pipeline by signal, DCS proportional controller and DCS system PID tune
Section device I and DCS system PID regulator II are respectively connected with by signal wire, on fluid level transmitter and soft water pipeline, concentrated base pipeline
Two regulating valves are respectively connected with.
The utility model has the beneficial effects that the soft water flux being added by control, what control concentrated base in proportion was added
Flow, and soft water and concentrated base addition stability of flow are controlled by DCS system PID regulator, the proportion of lye is just able to maintain surely
It is fixed；Fluid level transmitter interlocked control soft water and concentrated base regulating valve, guarantee the Liquid level of surge-tank in the range of requiring, in this way
Burden control precision can be greatly improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing alkali liquor preparation control device；
Fig. 2 is the structural schematic diagram of the utility model；
Wherein: 1- alkaline liquor make-up tank, 2- heat exchanger, 3- circulating pump, 4- static mixer, 5- fluid level transmitter, 6- are adjusted
Valve, 7- flowmeter, 8-DCS system PID regulator I, 9-DCS system PID regulator II, 10- densitometer, the control of 11-DCS ratio
Device.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail.Referring to fig. 2, the utility model provides improved lye
Deploy control device, comprising: alkaline liquor make-up tank 1, static mixer 4, regulating valve 6, flowmeter 7, DCS proportional controller 11, DCS
Static mixer 4 is accessed by soft water pipeline in system PID regulator I 8, DCS system PID regulator II 9, external soft water source, outside
Static mixer 4 is accessed by concentrated base pipeline in portion concentrated base source, is respectively mounted on soft water pipeline and concentrated base pipeline equipped with regulating valve 6, stream
Meter 7, when work, soft water and concentrated base passes sequentially through flowmeter 7 respectively and regulating valve 6 accesses the entrance of static mixer 4 is static
The outlet of mixer 4 connection alkaline liquor make-up tank 1, alkaline liquor make-up tank 1 are equipped with fluid level transmitter 5, fluid level transmitter 5 and hose
Two regulating valves 6 on road, concentrated base pipeline are respectively connected with, and the effect of fluid level transmitter 5 is interlocked control regulating valve 6, guarantee to adjust
1 level stability of slot allocation is in a certain range；The outlet of alkaline liquor make-up tank 1 connects circulating pump 3, and circulating pump 3 is connected by heat exchanger 2
The junction of alkaline liquor make-up tank 1, heat exchanger 2 and alkaline liquor make-up tank 1 is equipped with densitometer 10；The flowmeter 7 of soft water pipeline connection,
DCS system PID regulator I 8 is sequentially connected with the regulating valve 6 on soft water pipeline by signal, and effect is that control soft water is added
Amount is stablized；The regulating valve 6 on flowmeter 8, DCS system PID regulator II 9 and concentrated base pipeline that concentrated base pipeline connects passes through signal
Sequentially it is connected, effect is that control concentrated base additional amount is stablized；DCS proportional controller 11 and DCS system PID regulator I 8 and DCS
System PID regulator II 9 is respectively connected with by signal wire, and effect is the proportion that lye is controlled by the ratio value of technique initialization
Stablize.
The utility model is after improving, to reduce by a density on the basis of existing lye liquid deploys control device
Meter and regulating valve change device control mode, and control soft water in proportion is changed into former densitometer automatic control and concentrated base is added
Amount, since flow is adjusted rapidly, it is easy to which stability contorting improves materials quality to improve the density accuracy of lye liquid allotment.
Claims (4)
1. improved alkali liquor preparation control device, comprising: alkaline liquor make-up tank, static mixer, regulating valve, flowmeter, DCS ratio
Controller, DCS system PID regulator I, DCS system PID regulator II, it is characterised in that: external soft water source passes through soft water pipeline
Static mixer is accessed, external concentrated base source is accessed static mixer by concentrated base pipeline, is all provided on soft water pipeline and concentrated base pipeline
There are regulating valve, flowmeter, static mixer outlet connects alkaline liquor make-up tank, and the outlet of alkaline liquor make-up tank connects circulating pump, circulation
Pump discharge connects heat exchanger, and heat exchanger exit is connected to alkaline liquor make-up tank；
Flowmeter, the DCS system PID regulator I of soft water pipeline connection are connected by signal according to suitable with soft water regulating valve；Concentrated base pipe
Flowmeter, DCS system PID regulator II on road are connected by signal according to suitable with the regulating valve on concentrated base pipeline；DCS ratio control
Device processed is respectively connected with DCS system PID regulator I and DCS system PID regulator II by signal wire.
2. improved alkali liquor preparation control device according to claim 1, it is characterised in that: be equipped on alkaline liquor make-up tank
Fluid level transmitter.
3. improved alkali liquor preparation control device according to claim 1, it is characterised in that: heat exchanger and alkaline liquor make-up tank
Junction densitometer is installed.
4. improved alkali liquor preparation control device according to claim 1, it is characterised in that: fluid level transmitter and hose
Regulating valve on road, concentrated base pipeline is respectively connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821736450.7U CN209302567U (en) | 2018-10-25 | 2018-10-25 | Improved alkali liquor preparation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821736450.7U CN209302567U (en) | 2018-10-25 | 2018-10-25 | Improved alkali liquor preparation control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209302567U true CN209302567U (en) | 2019-08-27 |
Family
ID=67671460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821736450.7U Active CN209302567U (en) | 2018-10-25 | 2018-10-25 | Improved alkali liquor preparation control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209302567U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504151A (en) * | 2021-06-10 | 2021-10-15 | 中国核电工程有限公司 | Device and method for measuring foam mixing ratio of foam fire-fighting system based on density method |
| CN114225840A (en) * | 2021-11-26 | 2022-03-25 | 安徽金禾实业股份有限公司 | Automatic batching system and method in maltol production |
| CN116036320A (en) * | 2022-12-01 | 2023-05-02 | 椰枫堂（广州）生物科技有限公司 | Ultra-high temperature instantaneous sterilization equipment |
-
2018
- 2018-10-25 CN CN201821736450.7U patent/CN209302567U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504151A (en) * | 2021-06-10 | 2021-10-15 | 中国核电工程有限公司 | Device and method for measuring foam mixing ratio of foam fire-fighting system based on density method |
| CN114225840A (en) * | 2021-11-26 | 2022-03-25 | 安徽金禾实业股份有限公司 | Automatic batching system and method in maltol production |
| CN116036320A (en) * | 2022-12-01 | 2023-05-02 | 椰枫堂（广州）生物科技有限公司 | Ultra-high temperature instantaneous sterilization equipment |
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