CN104959338A - Method and system for controlling flushing valve group of desulfurizing demister - Google Patents
Method and system for controlling flushing valve group of desulfurizing demister Download PDFInfo
- Publication number
- CN104959338A CN104959338A CN201510300996.2A CN201510300996A CN104959338A CN 104959338 A CN104959338 A CN 104959338A CN 201510300996 A CN201510300996 A CN 201510300996A CN 104959338 A CN104959338 A CN 104959338A
- Authority
- CN
- China
- Prior art keywords
- flushing valve
- flushing
- address
- plc
- valve group
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Abstract
The invention discloses a method and a system for controlling a flushing valve group of a desulfurizing demister. The method comprises the following steps of: (1) when an opening order is received, a PLC output node sends the opening command to a first flushing valve; (2) an address A of the PLC is added up by 1 every a set time, switches of flushing valves are controlled according to the size of the address A, and after a last flushing valve is closed, the address A is not added up any longer; (3) after the last flushing valve is closed, an address B is triggered to be added up, the opening command to the first flushing valve is sent every a set time internal T2, and at the same time, the address B is reset to return to the step (2) until atermination command is received. According to the method and the system, disclosed by the invention, the situation that the whole flushing valve group is in failure because opening and closing signals are not in place can be avoided, sequential operation of the valve group can also be executed under the situation that a single valve cannot perform action or in-place signals of the opening and the closing disappear, the flushing operation of the whole valve group cannot be influenced by the single valve, so that the demister equipment is protected to a greatest degree, and the normal use of a flushing system of the demister is ensured.
Description
Technical field
The present invention relates to
a kind of mist separator of desulfurization flushing valve group control method and system.
Background technology
At present, mist separator of desulfurization flushing valve drives Open valve one by one to carry out clean in place to demister by the input and output point of PLC module, because valve quantity is too much, under using for a long time, due to uncertain factors such as site environment, valve Denso life-span, valve frame for movement, PLC module life-spans, the open and close state of each valve can be affected, and often occurs that open and close put in place the faults such as blackout, cause the sequence starting of flushing valve group, can not rinse demister.The sequentially-operating that can affect valve group because of the fault of single valve performs.
Summary of the invention
Object of the present invention is exactly to solve the problem, and provides
a kind of mist separator of desulfurization flushing valve group control method and system, avoid disappearing because open and close put in place and causing whole flushing valve group
paralysiseven if single valve cannot perform an action or open and close put in place blackout, the sequentially-operating of valve group also can perform down, can't affect the flushing work of whole valve group because of single valve.
To achieve these goals, the present invention adopts following technical scheme:
A kind of mist separator of desulfurization flushing valve group control method, comprises the following steps:
(1), open flushing pump and extract fresh water (FW) in technique water tank, give the PLC open command controlling flushing valve switch, PLC output point corresponding to the first flushing valve gives at relay open command;
(2), the address A of PLC adds 1 every the time cumulation of setting, gives the order of relay open command corresponding to flushing valve or closedown according to the size PLC of address A, and the order that PLC receives termination stops the control to flushing valve afterwards; After the closedown of last by-pass valve control, address A is no longer cumulative enters step (3);
(3) after PLC output point gives cut-off order disappearance corresponding to last flushing valve, trigger address B starts to add up to add 1 every setting-up time, relay open command corresponding to first flushing valve again give according to the size of address B, address B resets and returns described step (2) simultaneously.
The concrete grammar giving the order of flushing valve open command or closedown according to the size PLC of address A in described step (2) is: when address A equals nT1, judge whether nT1 equals NT1, wherein T1 be setting the time interval, T1 be not equal to 0 natural number; N is greater than the natural number that 0 is less than N, and N is total number of flushing valve, and when nT1 is not equal to NT1, PLC output point corresponding to the (n+1)th flushing valve gives at relay open command, gives the cut-off order that the n-th flushing valve is corresponding simultaneously; When nT1 equals NT1, give the cut-off order that N flushing valve is corresponding, address A no longer adds up simultaneously.
The concrete grammar again giving relay open command corresponding to first flushing valve according to the size of address B in described step (3) is: when address B equals T2, give the relay open command that first flushing valve is corresponding, wherein T2 be setting the time interval, T2 be not equal to 0 natural number.
In described step (2) and step (3), address A and address B is per second accumulatively adds 1.
Adopt a system for mist separator of desulfurization flushing valve group control method, comprise technique water tank, described technique water tank connects demister by water-supply-pipe, and described water-supply-pipe is provided with flushing pump and mist eliminator flushing valve group;
Described mist eliminator flushing valve group comprises upper, middle and lower three parallel branches, each branch road is all provided with the flushing valve of multiple series connection; The action executing of each flushing valve is corresponding to a Control, and each relay is connected to the output point of a PLC.
Every bar branch road is all provided with 6 flushing valves.
Described flushing pump is provided with two, and one is main flushing pump, and one is flushing pump for subsequent use, and two flushing pumps are connected in parallel on aqueduct.
Beneficial effect of the present invention: this
inventioncan to avoid disappearing because open and close put in place and causing whole flushing valve group
paralysiseven if single valve cannot perform an action or open and close put in place blackout; the sequentially-operating of valve group also can perform down; automatically trouble point can be skipped; the flushing work of whole valve group can't be affected because of single valve; maximum protection can be accomplished to demister equipment, ensure that the normal use of mist eliminator flushing system.
Accompanying drawing explanation
fig. 1for present system structural representation
figure;
Wherein, 1. demister, 2. mist eliminator flushing valve group, 3. flushing pump, 4. technique water tank.
Detailed description of the invention
Below in conjunction with
accompanying drawingthe invention will be further described with embodiment.
as Fig. 1shown in, a kind of system adopting mist separator of desulfurization flushing valve group control method, comprises technique water tank 4, and described technique water tank 4 connects demister 1 by water-supply-pipe, and described water-supply-pipe is provided with flushing pump 3 and mist eliminator flushing valve group 2;
Described mist eliminator flushing valve group 2 comprises upper, middle and lower three parallel branches, each branch road is all provided with the flushing valve of multiple series connection; The action executing of each flushing valve is corresponding to a Control, and each relay is connected to the output point of a PLC.
Every bar branch road is all provided with 6 flushing valves, comes to 18 flushing valves, respectively called after first flushing valve, the second flushing valve ... 18 flushing valve.
Described flushing pump establishes 3 to have two, and one is main flushing pump, and one is flushing pump for subsequent use, and two flushing pumps 3 are connected in parallel on aqueduct.
A kind of mist separator of desulfurization flushing valve group control method, comprises the following steps:
Open flushing pump and extract fresh water (FW) in technique water tank, after the beginning control button of PLC is pressed, PLC output point gives the first flushing valve open command; As long as PLC not power-off, just continue to send control command,
Per second the adding up of the address A of PLC adds 1, when address A equals T1, T1 is the time interval that user sets, can 4 be got in the present embodiment, T1 is obviously not equal to 17T1, now PLC output point corresponding to the second flushing valve gives at relay open command, gives the cut-off order that the first flushing valve is corresponding simultaneously;
When address A equals 2*4, now PLC output point corresponding to the 3rd flushing valve gives at relay open command, gives the cut-off order that the second flushing valve is corresponding simultaneously; The like,
When address A equals 17*4, now PLC output point corresponding to the 18 flushing valve gives at relay open command, gives the cut-off order that the 17 flushing valve is corresponding simultaneously;
Until when address A equals 18*4, address A no longer adds up, PLC output point corresponding to the 18 flushing valve gives at cut-off order; After PLC output point gives cut-off order disappearance corresponding to the 18 flushing valve, per second the adding up of trigger address B adds 1, when address B equals T2,3600 are selected in the present embodiment, namely after after an hour, give the relay open command that first flushing valve is corresponding, simultaneously address B resets and return address A re-starts and per secondly accumulatively adds 1, the flushing valve starting a new round controls, until PLC receives stop order.
Although above-mentioned combination
accompanying drawingthe specific embodiment of the present invention is described; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (7)
1. a mist separator of desulfurization flushing valve group control method, is characterized in that, comprise the following steps:
(1), open flushing pump and extract fresh water (FW) in technique water tank, give the PLC open command controlling flushing valve switch, PLC output point corresponding to the first flushing valve gives at relay open command;
(2), the address (A) of PLC adds 1 every the time cumulation of setting, give the order of relay open command corresponding to flushing valve or closedown according to the size PLC of address (A), the order that PLC receives termination stops the control to flushing valve afterwards; After the closedown of last by-pass valve control, address (A) is no longer cumulative enters step (3);
(3) after PLC output point gives cut-off order disappearance corresponding to last flushing valve, trigger address (B) starts to add up to add 1 every setting-up time, relay open command corresponding to first flushing valve again give according to the size of address (B), address (B) resets and returns described step (2) simultaneously.
2. a kind of mist separator of desulfurization flushing valve group control method as claimed in claim 1, it is characterized in that, the concrete grammar giving the order of flushing valve open command or closedown according to the size PLC of address (A) in described step (2) is: when address (A) equals nT1, judge whether nT1 equals NT1, wherein T1 be setting the time interval, T1 be not equal to 0 natural number; N is greater than the natural number that 0 is less than N, and N is total number of flushing valve, and when nT1 is not equal to NT1, PLC output point corresponding to the (n+1)th flushing valve gives at relay open command, gives the cut-off order that the n-th flushing valve is corresponding simultaneously; When nT1 equals NT1, give the cut-off order that N flushing valve is corresponding, address (A) no longer adds up simultaneously.
3. a kind of mist separator of desulfurization flushing valve group control method as claimed in claim 1, it is characterized in that, the concrete grammar again giving relay open command corresponding to first flushing valve according to the size of address (B) in described step (3) is: when address (B) equals T2, give the relay open command that first flushing valve is corresponding, wherein T2 be setting the time interval, T2 be not equal to 0 natural number.
4. a kind of mist separator of desulfurization flushing valve group control method as claimed in claim 1, is characterized in that, in described step (2) and step (3), address (A) and address (B) is per second accumulatively adds 1.
5. adopt a system for mist separator of desulfurization flushing valve group control method described in claim 1, it is characterized in that, comprise technique water tank, described technique water tank connects demister by water-supply-pipe, and described water-supply-pipe is provided with flushing pump and mist eliminator flushing valve group;
Described mist eliminator flushing valve group comprises upper, middle and lower three parallel branches, each branch road is all provided with the flushing valve of multiple series connection; The action executing of each flushing valve is corresponding to a Control, and each relay is connected to the output point of a PLC.
6. a kind of system adopting mist separator of desulfurization flushing valve group control method as claimed in claim 3, is characterized in that, every bar branch road is all provided with 6 flushing valves.
7. a kind of system adopting mist separator of desulfurization flushing valve group control method as claimed in claim 3, it is characterized in that, described flushing pump is provided with two, and one is main flushing pump, and one is flushing pump for subsequent use, and two flushing pumps are connected in parallel on aqueduct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510300996.2A CN104959338B (en) | 2015-06-03 | 2015-06-03 | A kind of mist separator of desulfurization rinses valve group control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510300996.2A CN104959338B (en) | 2015-06-03 | 2015-06-03 | A kind of mist separator of desulfurization rinses valve group control method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104959338A true CN104959338A (en) | 2015-10-07 |
| CN104959338B CN104959338B (en) | 2017-03-01 |
Family
ID=54213518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510300996.2A Active CN104959338B (en) | 2015-06-03 | 2015-06-03 | A kind of mist separator of desulfurization rinses valve group control method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104959338B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691995A (en) * | 2020-12-31 | 2021-04-23 | 苏州欧赫电气自动化有限公司 | Pump set for vacuum cleaning and drying system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5296974A (en) * | 1976-02-12 | 1977-08-15 | Babcock Hitachi Kk | Washing of demister |
| JPH11267449A (en) * | 1998-03-24 | 1999-10-05 | Ishikawajima Harima Heavy Ind Co Ltd | Method for cleaning mist eliminator of stack gas desulfurizer |
| CN102423597A (en) * | 2011-10-14 | 2012-04-25 | 华南理工大学 | Intelligent anti-blocking demister used for wet flue gas desulfurization |
| CN203950166U (en) * | 2014-07-01 | 2014-11-19 | 辽宁省岭南环保高新技术产业园发展有限公司 | Mist separator of desulfurization timing, variable, transformation self-stripping system |
| CN204685550U (en) * | 2015-06-03 | 2015-10-07 | 济南伊斯达自控工程有限公司 | A kind of mist separator of desulfurization flushing valve set control system |
-
2015
- 2015-06-03 CN CN201510300996.2A patent/CN104959338B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5296974A (en) * | 1976-02-12 | 1977-08-15 | Babcock Hitachi Kk | Washing of demister |
| JPH11267449A (en) * | 1998-03-24 | 1999-10-05 | Ishikawajima Harima Heavy Ind Co Ltd | Method for cleaning mist eliminator of stack gas desulfurizer |
| CN102423597A (en) * | 2011-10-14 | 2012-04-25 | 华南理工大学 | Intelligent anti-blocking demister used for wet flue gas desulfurization |
| CN203950166U (en) * | 2014-07-01 | 2014-11-19 | 辽宁省岭南环保高新技术产业园发展有限公司 | Mist separator of desulfurization timing, variable, transformation self-stripping system |
| CN204685550U (en) * | 2015-06-03 | 2015-10-07 | 济南伊斯达自控工程有限公司 | A kind of mist separator of desulfurization flushing valve set control system |
Non-Patent Citations (1)
| Title |
|---|
| 张思锐: "AB ControlLogix PLC在火电厂2×600MW机组烟气脱硫工程的应用研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691995A (en) * | 2020-12-31 | 2021-04-23 | 苏州欧赫电气自动化有限公司 | Pump set for vacuum cleaning and drying system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104959338B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2635306C2 (en) | Method and system for tests of several space-distributed protective devices for electrical network | |
| WO2011041819A3 (en) | Method and device for recognizing faults in a photovoltaic system | |
| CN104898645B (en) | A kind of satellite fault detection isolation recovery policy and tactful dynamic adjusting method | |
| CN103730945B (en) | Quick power switching method and system | |
| CN109818410A (en) | A kind of rapidly self-healing method of urban track traffic ac power supply system | |
| CN104269890B (en) | The control method of extra-high voltage direct-current layer-specific access mode and system | |
| CN104959338A (en) | Method and system for controlling flushing valve group of desulfurizing demister | |
| CN201282326Y (en) | Input power supply overvoltage protection circuit | |
| CN202978399U (en) | Branch unit | |
| CN105179219A (en) | Device for controlling two air compressors of locomotive | |
| CN204464977U (en) | A kind ofly realize the transmitting-receiving of current differential protection passage with the self-healing device in path | |
| CN103116116A (en) | Judging method and device of over line stoppage property of same pole double-circuit line with paralleling reactor | |
| CN106058907A (en) | Method of inputting line into DC network in multi-end flexible DC power transmission system | |
| CN103454937B (en) | Energy-saving automatic adjusting system of air compressor | |
| CN104600833A (en) | Method and system for determining spare power automatic switching on-off combination | |
| CN104915520A (en) | Tripping logic simulating method for alternating current filters of direct-current converting station | |
| CN107508278B (en) | Backup power switching method without line voltage | |
| CN110138078A (en) | 10KV dual power supply prepared auto restart automatic switching control equipment and method | |
| CN106329714A (en) | Method for dynamically judging switch type of power grid | |
| CN109446124B (en) | Driving stage structure and method for motor and electromagnetic valve equipment of thermal power generating unit | |
| CN104218670A (en) | Post-power-failure recovery and starting system for ultra-large container vessel | |
| CN104158160B (en) | 10KV distribution line and fault detection method of the E types based on on-pole switch | |
| CN204685550U (en) | A kind of mist separator of desulfurization flushing valve set control system | |
| CN203166758U (en) | Remote turn-off control signal receiving circuit | |
| CN209104802U (en) | A kind of protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A control method and system for flushing valve group of desulfurization demister Effective date of registration: 20220623 Granted publication date: 20170301 Pledgee: Shandong science and technology finance Company limited by guarantee Pledgor: Jinan Yisida Automation Engineering Co.,Ltd. Registration number: Y2022370000073 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230707 Granted publication date: 20170301 Pledgee: Shandong science and technology finance Company limited by guarantee Pledgor: Jinan Yisida Automation Engineering Co.,Ltd. Registration number: Y2022370000073 |