CN202482357U - Automatic steam diffusion pressure-stabilizing device - Google Patents
Automatic steam diffusion pressure-stabilizing device Download PDFInfo
- Publication number
- CN202482357U CN202482357U CN2012200719482U CN201220071948U CN202482357U CN 202482357 U CN202482357 U CN 202482357U CN 2012200719482 U CN2012200719482 U CN 2012200719482U CN 201220071948 U CN201220071948 U CN 201220071948U CN 202482357 U CN202482357 U CN 202482357U
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- pressure
- steam
- valve
- manual
- manual switch
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Abstract
The utility model relates to an automatic steam diffusion pressure-stabilizing device which is used for stabilizing steam pressure. One end of a manual switch valve is connected to a power plant steam pipeline through a pipeline while the other end of the manual switch valve is connected with a steam pipe of a special steel VOD (vacuum arc degassing) furnace. Two ends of the manual switch valve are parallelly connected with an electric adjusting valve, a pressure transmitter and a manual valve in serial connection, and the electric adjusting valve and the pressure transmitter are electrically connected with a PLC (programmable logic controller). The automatic steam diffusion pressure-stabilizing device is capable of automatically adjusting pressure to guarantee pressure stability of steam used by the special steel VOD furnace.
Description
Technical field
The utility model relates to a kind of automatic bleeding device of steam of special steel VOD stove, is used for stablizing the pressure of steam.
Background technology
Special steel VOD stove (vacuum degassing furnace) drives the furnace gas outflow through vacuum ejector pump uperize, reduce internal pressure, vacuum tightness reach one regularly oxygen blast smelt.The height of vapor pressure and stability have direct influence to evacuation process time and VOD smelting quality.The used steam of special steel VOD stove is provided by power plant, and power plant's steam safety physics value of diffusing is 0.98MPa.Because the steam flow that the VOD stove consumes aborning changes, so cause vapor pressure to change greatly, once caused power plant's physics bleeding device action when pressure is high, influence steam supply.The valve that diffuses in original design is a switch-valve, does not possess the pressure regulating effect, can't guarantee the stable supply of VOD steam.
Summary of the invention
In order to overcome the shortcoming of prior art, the utility model provides a kind of steam to diffuse the pressure-stabilisation device automatically, and its automatic pressure regulation guarantees that the used vapor pressure of special steel VOD stove is stable.
The technical scheme that its technical problem of the utility model solution is taked is: the manual switch valve is through pipeline one termination power plant steam-pipe; Another termination special steel VOD stove vapour pipe; The two ends of described manual switch valve also connect placed in-line motor-driven control valve, pressure unit and manual valve, and described motor-driven control valve and pressure unit are electrically connected with PLC.
The utility model automatic pressure regulation can guarantee that the used vapor pressure of special steel VOD stove is stable, guarantees the safety of power plant's steam supply.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Accompanying drawing is the utility model synoptic diagram.
Embodiment
Shown in accompanying drawing; Manual switch valve 2 is through pipeline one termination power plant steam-pipe 1; Another termination special steel VOD stove vapour pipe 3; The two ends of described manual switch valve 2 also connect placed in-line motor-driven control valve 4, pressure unit 5 and manual valve 6, and described motor-driven control valve 4 is electrically connected with PLC with pressure unit 5.
The model of said PLC is SIEMENS S7-200, is the control core of the utility model, and the signal that 5 detections are returned according to pressure unit is as regulating foundation, and the valve opening of regulating motor-driven control valve 2 automatically realizes that the pipeline top pressure is stable within the specific limits.
Described motor-driven control valve 4, pressure unit 5 and manual valve 6, and PLC has two covers.PLC is the setting pressure value range respectively; Wherein regulate as master control for one; Regulate when pipeline pressure is transfinited, the auxilliary control of another conduct is regulated, and regulates fault or has reached maximum and can't effectively regulate under the situation of pressure in master control; Auxilliary control is regulated and is put into operation automatically, guarantees effective work of system.
Described PLC is electrically connected digital display meter 8 and warning device 9.Utilize the upper limit of digital display meter 8 that the highest barrier line of function setting is set, after pressure reached the highest barrier line, the digital display meter output alarm signal through the warning device alarm, reminded operator that system is checked.When fault can not be regulated automatically, utilize manual valve 6 manual regulation, guarantee that pipeline pressure is controlled in the safety range.
Described digital display meter 8 is two covers with warning device 9, shows current pipeline pressure and valve opening respectively, is convenient to operator and accurately grasps information.
Claims (3)
1. a steam diffuses the pressure-stabilisation device automatically; Manual switch valve (2) is through pipeline one termination power plant steam-pipe (1); Another termination special steel VOD stove vapour pipe (3); It is characterized in that: the two ends of described manual switch valve (2) also connect placed in-line motor-driven control valve (4), pressure unit (5) and manual valve (6), and described motor-driven control valve (4) and pressure unit (5) are electrically connected with PLC.
2. steam according to claim 1 diffuses the pressure-stabilisation device automatically, it is characterized in that: the model of said PLC is SIEMENS S7-200.
3. steam according to claim 1 diffuses the pressure-stabilisation device automatically, it is characterized in that: described motor-driven control valve (4), pressure unit (5) and manual valve (6), and PLC has two covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200719482U CN202482357U (en) | 2012-02-29 | 2012-02-29 | Automatic steam diffusion pressure-stabilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200719482U CN202482357U (en) | 2012-02-29 | 2012-02-29 | Automatic steam diffusion pressure-stabilizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202482357U true CN202482357U (en) | 2012-10-10 |
Family
ID=46956794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200719482U Expired - Lifetime CN202482357U (en) | 2012-02-29 | 2012-02-29 | Automatic steam diffusion pressure-stabilizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202482357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011390A (en) * | 2016-07-15 | 2016-10-12 | 江苏联峰能源装备有限公司 | Control system and method for VD vacuum refining furnace steel slag overflow |
-
2012
- 2012-02-29 CN CN2012200719482U patent/CN202482357U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011390A (en) * | 2016-07-15 | 2016-10-12 | 江苏联峰能源装备有限公司 | Control system and method for VD vacuum refining furnace steel slag overflow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |