CN107388041A - The dual gas supply control system of Pneumatic anti-surging valve - Google Patents
The dual gas supply control system of Pneumatic anti-surging valve Download PDFInfo
- Publication number
- CN107388041A CN107388041A CN201710599144.7A CN201710599144A CN107388041A CN 107388041 A CN107388041 A CN 107388041A CN 201710599144 A CN201710599144 A CN 201710599144A CN 107388041 A CN107388041 A CN 107388041A
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- Prior art keywords
- gas
- valve
- gas transmission
- branch pipe
- source
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Classifications
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a kind of dual gas supply control system of Pneumatic anti-surging valve, including：Large Axial Compressor is arranged on to the anti-surge valve on the gas pipeline of blast furnace gas transmission, the actuator being connected with the atmospheric valve on anti-surge valve, and the gas transmission main connected with actuator, gas transmission main is connected with the first source of the gas, the first pressure transducer controller electrically connected with PLC is provided with gas transmission main, gas transmission branch pipe is provided with and communicated with the gas transmission main between the first source of the gas and first pressure transducer controller, gas transmission branch pipe is connected with the second source of the gas, the second pressure transducer controller electrically connected with PLC and electronic single-seat valve are disposed with gas transmission branch pipe, first check-valve is provided with the gas transmission main between gas transmission branch pipe and the first source of the gas.The accident caused by atmospheric valve is opened by mistake can be thus prevented, ironmaking yield is protected, also reduces maintenance cost.
Description
Technical field
The present invention relates to the control system of Pneumatic anti-surging valve.
Background technology
In blast furnace ironmaking process, the Large Axial Compressor in Ventilator Room is to empty needed for Iron Works supply smelting
The gas compression machinery equipment of gas, wherein Pneumatic anti-surging valve are to protect the key equipment of Large Axial Compressor.Pneumatic anti-asthma
The valve that shakes is arranged on Large Axial Compressor on the gas transmission main of blast furnace gas transmission, and the atmospheric valve on Pneumatic anti-surging valve is with pneumatically holding
Row device is connected, and pneumatic actuator connected by the first gas pipeline with source of the gas, and source of the gas can be by the first gas pipeline by air pressure
The gas that value is more than the atmospheric pressure value required for atmospheric valve on closing anti-surge valve is delivered in pneumatic actuator, so, is pneumatically held
Row device can just adjust the size of atmospheric pressure value in pneumatic actuator whether to control the opening of atmospheric valve on anti-surge valve, when large-scale
When surge phenomenon occurs in axial flow compressor, pneumatic actuator can reduce the gas pressure value in pneumatic actuator until less than opening
Pressure value required for atmospheric valve, now, the atmospheric valve on anti-surge valve will be opened so as to Large Axial Compressor immediately
Play a protective role.But above-mentioned control system has the following disadvantages：When Large Axial Compressor does not occur surge, but because defeated
Supply gas body device failure or the first gas pipeline on valve open not exclusively when, be transported in the first gas pipeline
Gas atmosphere value in pneumatic actuator is less than the atmospheric pressure value closed on anti-surge valve required for atmospheric valve, now, pneumatic to perform
Device can not be by the gas pressure value regulation in pneumatic actuator to the atmospheric pressure value closed required for atmospheric valve, putting on anti-surge valve
Empty valve will be constantly in open mode, and when atmospheric valve is constantly in open mode, Large Axial Compressor is normally producing
During can not just be smoothly through anti-surge valve and deliver gas in blast furnace, blast furnace, which just occurs, fills the thing such as slag or disconnected wind
Therefore.Ironmaking yield can not only be reduced by filling slag or disconnected wind accident, but also the air port on blast furnace can be made all to fill dead, the wind on blast furnace
Mouth, which is filled, after death to be needed to place under repair and could be smelted again, considerably increases maintenance cost.
The content of the invention
It is an object of the invention to provide a kind of when conveying gas device event occurs in the first gas pipeline connected with actuator
When valve on barrier or the first gas pipeline is opened not exclusively, the first gas pipeline is transported to the gas in pneumatic actuator
Pressure value can also be more than the dual gas supply control of the Pneumatic anti-surging valve of the Pneumatic anti-surging valve of the atmospheric pressure value required for closing atmospheric valve
System processed.
To achieve the above object, the technical solution adopted in the present invention is：The dual gas supply control system of Pneumatic anti-surging valve,
Including：Large Axial Compressor is arranged on to the anti-surge valve on the gas pipeline of blast furnace gas transmission and the emptying on anti-surge valve
The actuator of valve connection and the gas transmission main connected with actuator, gas transmission main are connected with the first source of the gas, set on gas transmission main
First pressure transducer controller is equipped with, first pressure transducer controller electrically connects with PLC, positioned at the first source of the gas and
Gas transmission branch pipe is provided with and communicated with gas transmission main between one pressure transmission controller, gas transmission branch pipe is connected with the second source of the gas,
Second pressure transducer controller and electronic single-seat valve, second pressure transducer controller and electronic list are disposed with gas transmission branch pipe
Seat valve is electrically connected with PLC respectively, and first is provided with the gas transmission main between gas transmission branch pipe and the first source of the gas
Check-valves.
Further, the dual gas supply control system of foregoing Pneumatic anti-surging valve, wherein, first source of the gas is can be defeated
Send the air compressor of compressed air.
Further, the dual gas supply control system of foregoing Pneumatic anti-surging valve, wherein, second source of the gas is can be defeated
The nitrogen compressor of nitrogen is sent, nitrogen compressor connects with the branch pipe all the way in the nitrogen header pipe in ironmaking region.
Further, the dual gas supply control system of foregoing Pneumatic anti-surging valve, wherein, gas transmission branch pipe welding is total in gas transmission
Guan Shang.
Further, the dual gas supply control system of foregoing Pneumatic anti-surging valve, wherein, positioned at electronic single-seat valve with it is defeated
Second check-valve is provided with gas transmission branch pipe between gas house steward.
Further, the dual gas supply control system of foregoing Pneumatic anti-surging valve, wherein, positioned at first check-valve and
Air gauge is provided with gas transmission main between one source of the gas.
It is an advantage of the invention that：In Large Axial Compressor normal work, when the first appendix connected with actuator
The valve that road occurs on the first air failure or the first gas pipeline opens situations such as incomplete, and conveys the first gas pipeline
When gas atmosphere into actuator is less than the barometric minimum value required for atmospheric valve on closing anti-surge valve, the second gas pipeline
Can be in time toward make-up gas in the first gas pipeline, the gas atmosphere value for making the first gas pipeline be transported in actuator is not low
In closing the barometric minimum value on anti-surge valve required for atmospheric valve, so as to prevent that the atmospheric valve on anti-surge valve from being opened by mistake,
It can thus prevent and fill the accident such as slag or disconnected wind caused by atmospheric valve is opened by mistake, not only be protected ironmaking yield
Barrier, and maintenance cost is also reduced, so as to retrieve millions of losses for enterprise.
Brief description of the drawings
Fig. 1 is the structural representation of the dual gas supply control system of Pneumatic anti-surging valve of the present invention.
Fig. 2 is the workflow diagram of the dual gas supply control system of Pneumatic anti-surging valve of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and preferred embodiment is described further to technical solutions according to the invention.
As shown in figure 1, the dual gas supply control system of Pneumatic anti-surging valve of the present invention, including：It is arranged on big profile shaft
Compressor 1 is flowed to the anti-surge valve 3 on the gas pipeline of the gas transmission of blast furnace 2, the actuator being connected with the atmospheric valve on anti-surge valve 3
31 and the gas transmission main 4 that is connected with actuator 31, gas transmission main 4 be connected with the first source of the gas 5, the first source of the gas 5 can be total toward gas transmission
Convey gas in pipe 4, be provided with first pressure transducer controller 41 on gas transmission main 4, first pressure transducer controller 41 with
PLC 6 electrically connects, and first pressure transducer controller 41 can detect the atmospheric pressure value of gas in gas transmission main 4, and will can examine
The atmospheric pressure value Real-time Feedback measured is into PLC 6, between the first source of the gas 5 and first pressure transducer controller 41
Gas transmission main 4 on welding be provided with gas transmission branch pipe 7, gas transmission branch pipe 7 is connected with the second source of the gas 8, and the second source of the gas 8 can be by defeated
Gas branch pipe 7 is disposed with second pressure transducer controller 71 and electricity toward gas is conveyed in gas transmission main 4 on gas transmission branch pipe 7
Dynamic single-seat valve 72, second pressure transducer controller 71 and electronic single-seat valve 72 electrically connect with PLC 6 respectively, second pressure
Transducer controller 71 can detect the atmospheric pressure value of gas in gas transmission branch pipe 7, and can be by the atmospheric pressure value Real-time Feedback detected to PLC
In controller 6, PLC 6 can control electronic single-seat valve 72 to open, but electronic single-seat valve 72 can not be controlled to close, and close
Closing electronic single-seat valve 72 needs after the service work to gas transmission main 4 is completed, by worker's manual-lock.Positioned at electronic single seat
Second check-valve 73 is provided with gas transmission branch pipe 7 between valve 72 and gas transmission main 4.Positioned at the source of the gas 5 of gas transmission branch pipe 7 and first
Between gas transmission main 4 on be provided with first check-valve 42, it is total in the gas transmission between the source of the gas 5 of first check-valve 42 and first
Air gauge 43 is provided with pipe 4.
The preset standard pressure value in PLC 6, the reference pressure value in PLC 6, which is more than, closes anti-surge valve
Barometric minimum value required for atmospheric valve on 3.The gas that PLC 6 feeds back the first pressure transducer controller 41 received
Pressure value is contrasted with reference pressure value；PLC 6 can also be by the atmospheric pressure value in the gas transmission main 4 received and gas transmission
Atmospheric pressure value in branch pipe 7 is contrasted.
As shown in Fig. 2 the workflow of the dual gas supply control system of Pneumatic anti-surging valve of the present invention is as follows：First
Pressure transmission controller 41 feeds back to the atmospheric pressure value in the gas transmission main 4 detected in PLC 6, if in gas transmission main 4
Atmospheric pressure value be not less than the reference pressure value that sets in PLC 6, illustrate that the gas transmission of gas transmission main 4 is normal, PLC 6 is not
Electronic single-seat valve 72 on gas transmission branch pipe 7 can be opened；If the atmospheric pressure value in gas transmission main 4 is less than what is set in PLC 6
Reference pressure value, while second pressure transducer controller 71 detects that the atmospheric pressure value in gas transmission branch pipe 7 is more than in gas transmission main 4
Atmospheric pressure value, PLC 6 will control electronic single-seat valve 72 to open, and the gas in gas transmission branch pipe 7 is transported into gas transmission main 4
In, the first check-valve 42 on gas transmission main 4 can prevent the gas in gas transmission branch pipe 7 from being conveyed toward the direction of the first source of the gas 5, this
Sample, gas in gas transmission branch pipe 7 can with the gas in gas transmission main 4 in gas transmission main 4 past actuator 31 converging together
Direction is flowed, and the gas pressure value in gas transmission main 4 would not be less than the reference pressure value set in PLC 6, so as to
Enough make the normal work of actuator 22.
When gas transmission branch pipe 7 conveys gas into gas transmission main 4, staff can be total to first check-valve 42, conveying
Source of the gas 5 of pipe 4 and first etc. is overhauled, thus can be while 31 normal work of actuator on ensureing anti-surge valve 3, also
The gas source control system part of failure can be overhauled, and can ensures that STEELMAKING PRODUCTION is normally carried out.
In the present embodiment, first source of the gas 5 is the air compressor that can convey compressed air；Second source of the gas 8
To be capable of the nitrogen compressor of supplying nitrogen, nitrogen compressor connects with the branch pipe all the way in the nitrogen header pipe in ironmaking region.
It is an advantage of the invention that：In Large Axial Compressor normal work, when the first appendix connected with actuator
The valve that road occurs on the first air failure or the first gas pipeline opens situations such as incomplete, and conveys the first gas pipeline
When gas atmosphere into actuator is less than the barometric minimum value required for atmospheric valve on closing anti-surge valve, the second gas pipeline
Can be in time toward make-up gas in the first gas pipeline, the gas atmosphere value for making the first gas pipeline be transported in actuator is not low
In closing the barometric minimum value on anti-surge valve required for atmospheric valve, so as to prevent that the atmospheric valve on anti-surge valve from being opened by mistake,
It can thus prevent and fill the accident such as slag or disconnected wind caused by atmospheric valve is opened by mistake, not only be protected ironmaking yield
Barrier, and maintenance cost is also reduced, so as to retrieve millions of losses for enterprise.
Claims (8)
1. the dual gas supply control system of Pneumatic anti-surging valve, including：It is arranged on gas transmission of the Large Axial Compressor to blast furnace gas transmission
Anti-surge valve, the actuator being connected with the atmospheric valve on anti-surge valve and the gas transmission main connected with actuator on pipeline, it is defeated
Gas house steward is connected with the first source of the gas, and first pressure transducer controller, first pressure transducer controller are provided with gas transmission main
Electrically connected with PLC, it is characterised in that：In the gas transmission main between the first source of the gas and first pressure transducer controller
On be provided with and communicated with gas transmission branch pipe, gas transmission branch pipe is connected with the second source of the gas, be disposed with gas transmission branch pipe second pressure change
Controller and electronic single-seat valve are sent, second pressure transducer controller and electronic single-seat valve electrically connect with PLC respectively, in place
First check-valve is provided with gas transmission main between gas transmission branch pipe and the first source of the gas.
2. the dual gas supply control system of Pneumatic anti-surging valve according to claim 1, it is characterised in that：First source of the gas
For the air compressor of compressed air can be conveyed.
3. the dual gas supply control system of Pneumatic anti-surging valve according to claim 1, it is characterised in that：Second source of the gas
To be capable of the nitrogen compressor of supplying nitrogen, nitrogen compressor connects with the branch pipe all the way in the nitrogen header pipe in ironmaking region.
4. the dual gas supply control system of the Pneumatic anti-surging valve according to claim 1,2 or 3, it is characterised in that：Gas transmission branch
Pipe is welded on gas transmission main.
5. the dual gas supply control system of the Pneumatic anti-surging valve according to claim 1,2 or 3, it is characterised in that：Positioned at
Second check-valve is provided with gas transmission branch pipe between electronic single-seat valve and gas transmission main.
6. the dual gas supply control system of Pneumatic anti-surging valve according to claim 4, it is characterised in that：Positioned at electronic list
Second check-valve is provided with gas transmission branch pipe between seat valve and gas transmission main.
7. the dual gas supply control system of the Pneumatic anti-surging valve according to claim 1,2 or 3, it is characterised in that：Positioned at
Air gauge is provided with gas transmission main between first check-valve and the first source of the gas.
8. the dual gas supply control system of Pneumatic anti-surging valve according to claim 5, it is characterised in that：Stop positioned at first
Air gauge is provided with the gas transmission main returned between valve and the first source of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599144.7A CN107388041A (en) | 2017-07-21 | 2017-07-21 | The dual gas supply control system of Pneumatic anti-surging valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599144.7A CN107388041A (en) | 2017-07-21 | 2017-07-21 | The dual gas supply control system of Pneumatic anti-surging valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107388041A true CN107388041A (en) | 2017-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710599144.7A Pending CN107388041A (en) | 2017-07-21 | 2017-07-21 | The dual gas supply control system of Pneumatic anti-surging valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN107388041A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185143A (en) * | 2018-10-16 | 2019-01-11 | 沈阳透平机械股份有限公司 | The control device of multiaxis multi-stage gear assembly type compressor seal gas |
| CN114278603A (en) * | 2021-12-27 | 2022-04-05 | 浙江中控技术股份有限公司 | Compressor control system, method, device, equipment and storage medium |
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Cited By (3)
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| CN109185143A (en) * | 2018-10-16 | 2019-01-11 | 沈阳透平机械股份有限公司 | The control device of multiaxis multi-stage gear assembly type compressor seal gas |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |
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