CN220601247U - Gas pressure control system - Google Patents
Gas pressure control system Download PDFInfo
- Publication number
- CN220601247U CN220601247U CN202322097232.0U CN202322097232U CN220601247U CN 220601247 U CN220601247 U CN 220601247U CN 202322097232 U CN202322097232 U CN 202322097232U CN 220601247 U CN220601247 U CN 220601247U
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- China
- Prior art keywords
- pressure
- control system
- valve
- regulating valve
- gas
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 44
- 239000011521 glass Substances 0.000 claims abstract description 8
- 239000003034 coal gas Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 5
- 239000000571 coke Substances 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to the technical field of pressure regulation and discloses a gas pressure control system which comprises a main pipeline, wherein at least five branch pipelines are connected to the main pipeline, a butterfly valve, a glasses valve, a gas filter, a straight-through regulating valve and a pressure transmitter are sequentially arranged on the branch pipelines, the pressure transmitter is electrically connected with a controller, the controller is electrically connected with an electric locator, and the output end of the electric locator is connected with the straight-through regulating valve. According to the gas pressure control system, the actuating mechanism of the pressure regulating valve is not contacted with coke oven gas, so that blocking and corrosion of the actuating mechanism can be avoided, and unit stopping caused by the gas pressure problem can be avoided.
Description
Technical Field
The utility model relates to the technical field of pressure regulation, in particular to a gas pressure control system.
Background
Cold-rolled oriented silicon steel, also called cold-rolled transformer steel, is an important ferrosilicon alloy applied to the manufacturing industry of transformers (iron cores). The cold rolled silicon steel sheet is divided into two steel strips, namely grain-unoriented and grain-oriented. Generally, a grain-unoriented cold rolled strip is used as an iron core of a motor or a welding transformer or the like; the grain-oriented cold-rolled strip is used as an iron core for power transformers, pulse transformers, magnetic amplifiers, and the like.
The silicon steel cold continuous rolling annealing adopts coke oven gas, the pressure regulation of the gas used at present adopts a plurality of self-operated pressure regulating valves, the pressure regulating valves are provided with open glasses valves at the front and back, and the pressure regulating system has the following problems:
1) And because of coke oven gas naphthalene slag and corrosive influence, accumulation of the naphthalene slag of the pressure regulating valve causes blocking and abrasion of an actuating mechanism, and directly influences the working stability of the pressure regulating valve, when a machine set stops due to factors such as faults, process switching and the like, the gas consumption is suddenly reduced, the pressure regulating valve acts slowly or does not act, the pressure of the gas behind the valve can be increased, and the gas is cut off after the pressure exceeds a high limit, so that a plurality of machine sets stop simultaneously.
2) The self-operated pressure regulating valve has short service life and poor pressure regulating effect after repairing, spare parts are required to be frequently replaced, the price of 92400 yuan/station is regulated by the pressure regulating valve, 4-6 stations are required to be replaced every year, the maintenance cost is high, and the difficulty and the risk of the operation process of replacing the pressure regulating valve are high.
Disclosure of Invention
Technical scheme (one)
In order to solve the problems, the utility model provides the following technical scheme:
the utility model provides a coal gas pressure control system, includes the main way pipe, be connected with the branch road pipe of at least five way on the main way pipe, install butterfly valve, spectacle valve, gas filter, straight-through governing valve and pressure transmitter on the branch road pipe in proper order, pressure transmitter and controller electrical signal connection, controller and electric locator electrical signal connection, electric locator's output and straight-through governing valve are connected.
Preferably, the input and output currents of the pressure transmitter, the electric positioner and the controller are all 4-20mA.
Preferably, the pressure of the compressed air input by the electric positioner is 0.4MPa.
Preferably, two butterfly valves and two glasses valves are arranged on the five branch pipes, one is arranged on the branch pipe at the front side of the gas filter, and the other is arranged on the branch pipe at the rear side of the pressure transmitter.
Preferably, the through regulating valve is of an electrically controlled pneumatic type.
Preferably, the through regulating valve is a multi-branch joint electric control type.
(II) advantageous effects
Compared with the prior art, the utility model provides a gas pressure control system, which comprises the following components
The beneficial effects are that:
1. according to the gas pressure control system, the actuating mechanism of the pressure regulating valve is not contacted with coke oven gas, so that blocking and corrosion of the actuating mechanism can be avoided, and unit stopping caused by the gas pressure problem can be avoided.
2. The gas pressure control system uses the pressure transmitter as a pressure acquisition unit, the pressure acquisition precision is high, the precision of the common pressure transmitter is 0.1%, the common pressure transmitter is converted into an electric signal and then output, the transmission process is not interfered by environmental factors, and the pressure control precision is high.
3. The gas pressure control system has a long electric signal transmission distance, so that the pressure can be taken out in a long distance, and the response speed and the accuracy of the pressure regulating valve are improved.
4. The core control part of the gas pressure control system adopts an intelligent controller with functions, the electro-pneumatic positioner returns to the valve position in real time, the real-time pressure and the gas pressure can be observed through a control box display screen, the gas pressure, the response time and the like can be set, and the control is convenient.
5. According to the gas pressure control system, functions can be expanded according to actual use requirements in the production process, such as remote and local operation switching, a plurality of pressure monitoring points can be additionally arranged, and the gas pressure control system can be switched or controlled in a linkage mode at will, so that the flexibility of use is improved, and the control is more convenient.
6. The gas pressure control system has the advantages that instruments and meters used by the system are common devices, and the pressure transmitter, the intelligent controller and the electric-gas positioner have strong universality with other on-line equipment, so that daily maintenance and overhaul are convenient and simple.
Drawings
Fig. 1 is a system diagram of the present utility model.
In the figure: 1. a main pipe; 2. a branch pipe; 3. butterfly valve; 4. a glasses valve; 5. a gas filter; 6. a straight-through regulating valve; 7. a pressure transmitter; 8. a controller; 9. an electrical positioner; 10. compressed gas.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1, a gas pressure control system includes a main pipe 1, a five-way branch pipe 2 is provided on the main pipe 1, a butterfly valve 3, a glasses valve 4, a gas filter 5, a through regulating valve 6 and a pressure transmitter 7 are sequentially installed on the five-way branch pipe 2, two butterfly valves 3 and glasses valve 4 are installed on the five-way branch pipe 2, one is installed on the branch pipe 2 at the front side of the gas filter 5, and the other is installed on the branch pipe 2 at the rear side of the pressure transmitter 7;
because the five-way branch pipe 2 is arranged, the through regulating valve 6 adopts multi-branch joint control, the through regulating valve 6 adopts an electric control pneumatic type, the position of the pressure transmitter 7 is electrically connected with the input end of the controller 8, the controller 8 is electrically connected with the electric positioner 9, and the output end of the electric positioner 9 is connected with the through regulating valve;
the input and output currents of the pressure transmitter 7, the electric positioner 9 and the controller 8 are all 4-20mA;
the pressure of the compressed air 10 input by the electric positioner 9 is 0.4MPa.
When the system is applied, in order to ensure the stable operation of the system, two groups of double-system control are adopted and are divided into a system 1 and a system 2, the program parameters of the two groups of systems are set to be the same, and when the system is in operation, the electric positioner 9 adjusts the pressure of the main pipeline 1 by controlling the opening of each valve on each branch pipeline 2 according to the collected opening of each valve and the collected data of the pressure transmitter 7;
the regulation modes of the through regulating valve 6 are divided into a debugging mode, a working mode, a main regulating mode, a secondary regulating mode, a feedforward mode and a safety mode, and the regulation instructions are as follows:
1. debug mode: when the manual mode is selected, the main regulation, the auxiliary regulation, the safety and the feedforward modes can not be selected, the regulating valve acts according to the manual set value, and under the automatic mode, the main regulation, the auxiliary regulation, the safety and the feedforward modes can be selected.
2. Working mode: when the valve needs to be used, the mode is selected, and the regulating valve is automatically closed and is in a standby state.
3. The main, secondary, safe, feed forward mode selection requires the selection of the regulator valve to first select the "operating mode" and "automatic mode".
4. Major mode: in the mode, PID automatic adjustment is carried out according to the pressure set value and the actual value, the adjusting valve can automatically compare the actual pressure with the actual pressure, the valve is automatically opened and closed, the actual pressure after the valve is finally kept consistent with the set pressure, and the dead set value is 0.5KPa.
5. Secondary tuning mode: this mode operates according to the opening degree and the pressure difference of the main regulator valve, and there are two conditions that cause the sub-regulator valve to operate. And when the opening of the main regulating valve is more than 80% or less than 20%, the auxiliary regulating valve acts according to the time of the auxiliary regulating mode interval set value, and the valve opening or closing is carried out according to the value set by the touch screen auxiliary regulating mode action value. And under the second condition, when the absolute value of the difference between the set pressure and the actual pressure is larger than the 'auxiliary regulation mode large value pressure value', the program automatically judges the valve closing and opening actions, and when the absolute value of the pressure is smaller than the 'auxiliary regulation mode small value pressure value', the action is stopped.
6. Feed forward mode: when the opening of the auxiliary regulating valve is more than 80% or less than 20%, the auxiliary regulating valve acts according to the feedforward mode interval set value, and the valve is opened or closed according to the value set by the feedforward mode action value of the touch screen.
7. Safety mode: when the actual pressure is smaller than the 'safe mode low pressure set value', the safe regulating valve is opened according to the 'safe mode time set value', and the action is stopped after the 'safe mode high pressure set value' is reached. It is generally recommended that the low value is set to 8kpa and the high value is set to 13kpa.
8. It should be noted that each regulator valve can only select one mode, and one mode can only be selected by one regulator valve, for example, when the 1# regulator valve selects the "main regulation mode", if the 2# regulator valve selects the "main regulation mode", the 1# regulator valve automatically cancels the "main regulation mode", and the valve position remains unchanged.
9. When the main regulation, the auxiliary regulation, the feedforward and the safety modes are switched by a single regulating valve, the position automatically keeps the opening before switching, and the pressure is ensured to be stable. When the working mode is selected and debugged, the regulating valve acts according to the manual opening degree setting.
10. The touch screen regulating valve is set to display the current regulating valve output command valve position, and the opening degree is displayed to display the current regulating valve actual valve position.
Claims (6)
1. The utility model provides a coal gas pressure control system, includes main road pipe (1), its characterized in that: the device is characterized in that the main pipeline (1) is connected with at least five branch pipelines (2), the branch pipelines (2) are sequentially provided with a butterfly valve (3), a glasses valve (4), a gas filter (5), a straight-through regulating valve (6) and a pressure transmitter (7), the pressure transmitter (7) is electrically connected with a controller (8), the controller (8) is electrically connected with an electric locator (9), and the output end of the electric locator (9) is connected with the straight-through regulating valve.
2. A gas pressure control system as claimed in claim 1, wherein: the input and output currents of the pressure transmitter (7), the electric positioner (9) and the controller (8) are all 4-20mA.
3. A gas pressure control system as claimed in claim 2, wherein: the pressure of compressed air (10) input by the electric positioner (9) is 0.4MPa.
4. A gas pressure control system as claimed in claim 1, wherein: two butterfly valves (3) and two glasses valves (4) are arranged on the five branch pipes (2), one is arranged on the branch pipe (2) at the front side of the gas filter (5), and the other is arranged on the branch pipe (2) at the rear side of the pressure transmitter (7).
5. A gas pressure control system according to any one of claims 1-4, wherein: the through regulating valve (6) is of an electric control pneumatic type.
6. A gas pressure control system as claimed in claim 5, wherein: the straight-through regulating valve (6) is a multi-branch joint electric control type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322097232.0U CN220601247U (en) | 2023-08-04 | 2023-08-04 | Gas pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322097232.0U CN220601247U (en) | 2023-08-04 | 2023-08-04 | Gas pressure control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220601247U true CN220601247U (en) | 2024-03-15 |
Family
ID=90166985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322097232.0U Active CN220601247U (en) | 2023-08-04 | 2023-08-04 | Gas pressure control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220601247U (en) |
-
2023
- 2023-08-04 CN CN202322097232.0U patent/CN220601247U/en active Active
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