CN202733435U - Oxygen speed limit device of oxygen generation and supply steelmaking system - Google Patents
Oxygen speed limit device of oxygen generation and supply steelmaking system Download PDFInfo
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- CN202733435U CN202733435U CN 201220407849 CN201220407849U CN202733435U CN 202733435 U CN202733435 U CN 202733435U CN 201220407849 CN201220407849 CN 201220407849 CN 201220407849 U CN201220407849 U CN 201220407849U CN 202733435 U CN202733435 U CN 202733435U
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- oxygen
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- regulator valve
- controllable regulator
- steelmaking system
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Abstract
The utility model relates to an oxygen speed limit device of an oxygen generation and supply steelmaking system. The oxygen speed limit device comprises a controllable adjusting valve mounted on an oxygen generation and supply pipeline of the steelmaking system. A pressure gauge and a flow meter are arranged on an outlet pipeline of the controllable adjusting valve, a signal of the pressure gauge is connected to a controller, output of the controller is connected to the controllable adjusting valve, and output of the flow meter is connected to the controller. The oxygen speed limit device of the oxygen generation and supply steelmaking system has the advantages that the structure is simple, and the problem about safety of oxygen supply of the steelmaking system is solved by controlling the controllable adjusting valve via the pressure gauge together with the flow meter additionally arranged in an oxygen supply loop.
Description
Technical field
The utility model relates to metallurgical field of steel-making, and particularly a kind of oxygen supply steelmaking system oxygen speed limiting device processed is the solution of the super flow velocity of oxygen supply steelmaking system oxygen processed.
Background technique
Iron and steel enterprise, steelmaking system be interrupted to use with oxygen, large with the instantaneous use amount of oxygen flow.The setting of oxygen generating plant is to be configured like this according to average use amount just not waste.Use the oxygen problem and solve to concentrate, be provided with pressure reservoir, store oxygen when stopping with oxygen, bulk storage is out during use.Like this, the instantaneous flow of steel making oxygen, much larger than the output of oxygen processed, the caliber of oxygen channel and storage of tank storage and pressure reduction decide, and are variablees.Because when flow velocity surpasses the setting flow velocity of pipeline, there is the danger of pipeline combustion explosion in the characteristic of oxygen.In April, 2007 Shanxi iron and steel enterprise foreign capitals gas companies, when new unit comes into operation, the oxygen filter blast on the voltage regulating station preceding pipeline, exactly since flow velocity exceed standard.Zhejiang iron and steel enterprise smelts iron oxygen filter blast on the oxygen enrichment pipeline in August, 2007, also is because flow velocity exceeds standard.As seen the significance of oxygen channel safety.
The calculating of oxygen channel flow velocity, the NBS carbon steel piping is 15m/s, stainless steel pipeline is 25m/s.The setting of caliber is relevant with flow, the pressure of flow velocity and gas.Usually steel making oxygen is set as 16KG.The caliber that 16KG calculates oxygen channel is pressed by unfamiliar designing institute.Experienced meeting is calculated caliber according to actual use condition with 12KG.The voltage-regulating system of present steel making oxygen; only setting pressure is regulated behind pressure regulator valve; namely when being lower than the pressure of setting, pressure (usually is set as 16KG); valve open; valve closing when being higher than setting pressure; for flow, just after under the above principle pipeline being designed, further do not protect.But arrange howsoever, when the pressure of pipeline during much larger than the pipe diameter that calculates (such as 25KG), because pressure reduction is large, instantaneous velocity still will surpass the flow velocity limit, the so super flow velocity of existence.The danger of blast is arranged.More than be exactly domestic at present, the present situation of steel making oxygen.
Summary of the invention
The purpose of this utility model is the oxygen supply steelmaking system oxygen speed limiting device technological scheme a kind of processed that proposes for the problems referred to above, by in the oxygen supply loop, increasing a flowmeter, with flowmeter and pressure meter controllable regulator valve is controlled, solved the safety problem that steelmaking system oxygen is supplied with.
To achieve these goals, the technical solution of the utility model is: a kind of oxygen supply steelmaking system oxygen speed limiting device processed, be included in a controllable regulator valve of installing on the steelmaking system oxygen supply pipeline processed, export pipeline in controllable regulator valve is provided with a pressure meter, manometric signal is connected to a controller, the output of controller is connected to controllable regulator valve, wherein, also be provided with a flowmeter on the export pipeline of controllable regulator valve, the output of flowmeter is connected to described controller.
Described controllable regulator valve is pneumatic diaphragm control valve, be provided with the entrance stop valve at described controllable regulator valve inlet pipe, be provided with outlet shutoff valve at described controllable regulator valve outlet conduit, between the outlet conduit of the inlet pipe of entrance stop valve and outlet shutoff valve, be provided with by-pass pipe, be provided with the bypass stop valve on the by-pass pipe.
The beneficial effects of the utility model are: simple in structure, by in the oxygen supply loop, increasing a flowmeter, controllable regulator valve is controlled the safety problem that has solved the supply of steelmaking system oxygen with flowmeter and pressure meter.
Below in conjunction with drawings and Examples the utility model is done further detailed description.
Description of drawings
Fig. 1 is the utility model structure intention;
Fig. 2 is that the utility model is with the structure intention of auxiliary stop valve.
Embodiment
A kind of oxygen supply steelmaking system oxygen speed limiting device processed, referring to Fig. 1 and Fig. 2, described device is included in a controllable regulator valve 1 of installing on the steelmaking system oxygen supply pipeline processed, export pipeline 2 in controllable regulator valve is provided with a pressure meter 3, manometric signal is connected to a controller 4, and the output of controller is connected to controllable regulator valve, wherein, also be provided with a flowmeter 5 on the export pipeline of controllable regulator valve, the output of flowmeter is connected to described controller.
For the installment and debugging convenience, described controllable regulator valve is pneumatic diaphragm control valve, be provided with entrance stop valve 6 in described controllable adjustment valve inlet official road, be provided with outlet shutoff valve 7 in described controllable adjustment valve outlet port official road, between the outlet conduit of the inlet pipe of entrance stop valve and outlet shutoff valve, be provided with by-pass pipe, be provided with bypass stop valve 8 on the by-pass pipe.
Super flow velocity appears at usually in the oxygen supply steelmaking system processed:
1, at the steel-making operation initial stage, at this moment pressure is the highest in the basin 9, and basin and steel making furnace 10 pressure reduction are maximum, valve open super flow velocity of moment.
2, simultaneously operation of several steel making furnaces, super flow velocity appears in the maximum instantaneous value stack.
The present embodiment carries out current limliting after controllable regulator valve, set current-limiting apparatus.Principle is as follows: on the oxygen channel after the controllable regulator valve, establish a flowmeter (when the amount of this flow is exactly designing institute's design, the instantaneous flow of the maximum that STEELMAKING PRODUCTION is required), carry out Flow-rate adjustment.Under normal circumstances, controllable regulator valve is regulated by pressure with oxygen, and when flow reached set amount, Flow-rate adjustment was preferred, carries out Flow-rate adjustment.Pipe safety has also had guarantee when guaranteeing STEELMAKING PRODUCTION like this.
Under the normal operation, provide signal to controllable regulator valve by pressure meter, pressure set points is for guaranteeing the needed pressure of STEELMAKING PRODUCTION (usually being set as 16KG).Controllable regulator valve is opened when pressure is lower than setting pressure, when pressure during near setting pressure controllable regulator valve turn down, controllable regulator valve is closed when reaching setting pressure.When flow reached the maximum instantaneous flow of setting, flux signal had precedence over pressure signal.This moment, controllable regulator valve was regulated by flux signal, closed controllable regulator valve when flow reaches setting value, and flow is during less than setting value, and controllable regulator valve is opened, and is adjusted to the master with pressure when leaving the hazardous area.
Claims (2)
1. oxygen supply steelmaking system oxygen speed limiting device processed, be included in a controllable regulator valve of installing on the steelmaking system oxygen supply pipeline processed, export pipeline in controllable regulator valve is provided with a pressure meter, manometric signal is connected to a controller, the output of controller is connected to controllable regulator valve, it is characterized in that, also be provided with a flowmeter on the export pipeline of controllable regulator valve, the output of flowmeter is connected to described controller.
2. a kind of oxygen supply steelmaking system oxygen speed limiting device processed according to claim 1, it is characterized in that, described controllable regulator valve is pneumatic diaphragm control valve, be provided with the entrance stop valve at described controllable regulator valve inlet pipe, be provided with outlet shutoff valve at described controllable regulator valve outlet conduit, be provided with by-pass pipe between the outlet conduit of the inlet pipe of entrance stop valve and outlet shutoff valve, by-pass pipe is provided with the bypass stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407849 CN202733435U (en) | 2012-08-17 | 2012-08-17 | Oxygen speed limit device of oxygen generation and supply steelmaking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407849 CN202733435U (en) | 2012-08-17 | 2012-08-17 | Oxygen speed limit device of oxygen generation and supply steelmaking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733435U true CN202733435U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407849 Expired - Fee Related CN202733435U (en) | 2012-08-17 | 2012-08-17 | Oxygen speed limit device of oxygen generation and supply steelmaking system |
Country Status (1)
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| CN (1) | CN202733435U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451360A (en) * | 2013-09-11 | 2013-12-18 | 天津伟力盛世节能科技股份有限公司 | Oxygen delivery device |
| CN107489886A (en) * | 2017-09-29 | 2017-12-19 | 四川德胜集团钒钛有限公司 | A kind of metallurgical industry oxygen control system |
-
2012
- 2012-08-17 CN CN 201220407849 patent/CN202733435U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451360A (en) * | 2013-09-11 | 2013-12-18 | 天津伟力盛世节能科技股份有限公司 | Oxygen delivery device |
| CN107489886A (en) * | 2017-09-29 | 2017-12-19 | 四川德胜集团钒钛有限公司 | A kind of metallurgical industry oxygen control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20200817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |