CN209292392U - A kind of RH vacuum system adjusting vacuum plant - Google Patents
A kind of RH vacuum system adjusting vacuum plant Download PDFInfo
- Publication number
- CN209292392U CN209292392U CN201822244641.8U CN201822244641U CN209292392U CN 209292392 U CN209292392 U CN 209292392U CN 201822244641 U CN201822244641 U CN 201822244641U CN 209292392 U CN209292392 U CN 209292392U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- pipeline
- main valve
- valve
- bypass line
- 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.)
- Active
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model provides a kind of RH vacuum system adjusting vacuum plant.Described device includes vacuum main valve (11), the first pipeline (21), the second pipeline (22), bypass line (23) and by-passing valve (14), wherein, the first pipeline (21) for connecting with RH equipment for vacuum refining is arranged in one end of vacuum main valve (11), and the second pipeline (22) for being controlled to a vacuum pump is arranged in the other end；And the first pipeline (21) and the second pipeline (22) are connected by bypass line (23), the by-passing valve (14) is arranged on bypass line (23), and the setting relationship in parallel with vacuum main valve (11) formation.By after RH application of vacuum to the method for vacuum pump side system not vacuum breaker, it is balanced vacuum main valve two sides vacuum pressure using by-passing valve, vacuum system emptying time can be shortened with quick start vacuum pump system, play the role of saving the dielectric dissipations such as steam, shortens RH process cycle.
Description
Technical field
The utility model relates to field of iron and steel smelting, and specifically, the utility model relates to a kind of adjustings of RH vacuum system
Vacuum plant.
Background technique
RH method, i.e. vacuum circulation degassing method are nineteen fifty-sevens by former West Germany's Rule company (Ruhrstahl) and extra large Lars company
(Heraeus) it develops jointly successfully, therefore becomes RH method, vacuum processing is that an important way of external refining is providing steel
Material product quality, expand quality, reduce cost, optimization steel-smelting production process etc. plays a very important role, be mesh
The indispensable production equipment of the steel grades such as preceding Automobile Plate, electrical sheet, pipe line steel.
When handling molten steel using RH method, first have to that ladle is sent into processing position with buggy ladle, ladle lifting soaks dip pipe
Enter to the following certain distance in molten steel face, then starts vacuum pump.As vacuum tank pressure declines, molten steel passes through dipping in ladle
Pipe is inhaled into vacuum tank.Lift gas is blown into the dip pipe as tedge, it is former by " airlift pump " of lift gas
Reason, is further driven to molten steel promotion, and molten steel passes back into ladle from the dip pipe as down-comer, forms the circulation of molten steel.
Most of RH purifier is all made of steam-to-vacuum pumping system (or final pumps are using water ring pump), only a few at present
Using mechanical vacuum pumping system.Vacuum pump system pipeline and vacuum tank side ducts are separated using vacuum main valve, and vacuum may be implemented
Pumping system forvacuum and closing vacuum main valve two sides can individually carry out vacuum breaker operation.After normal every furnace is disposed,
Vacuum main valve need to be first closed, to carry out vacuum breaker operation respectively to vacuum tank side and vacuum pump side, to beat again before the processing of lower furnace
Vacuum main valve is opened, restarting vacuum pump is vacuumized, and is needed to empty air in pipeline again before causing every furnace processing, be increased
The pumpdown time is added.
Utility model content
The purpose of this utility model is to provide a kind of RH vacuum systems to adjust vacuum plant.
In order to achieve the above object, the utility model provides a kind of RH vacuum system adjusting vacuum plant, wherein described device
Including vacuum main valve 11, the first pipeline 21, the second pipeline 22, bypass line 23 and by-passing valve 14, wherein vacuum main valve 11
The first pipeline 21 for connecting with RH equipment for vacuum refining is arranged in one end, and second for being controlled to a vacuum pump is arranged in the other end
Pipeline 22；And connected the first pipeline 21 and the second pipeline 22 by bypass line 23, the by-passing valve 14 is arranged on side
On siphunculus road 23, and setting relationship in parallel is formed with vacuum main valve 11.
According to some specific embodiments of the utility model, wherein 14 interior diameter of 23 interior diameter of bypass line and by-passing valve
For DN150-300.
According to some specific embodiments of the utility model, wherein the first pipeline 21, the second pipeline 22 and vacuum main valve 11
Interior diameter it is identical, the interior diameter ratio of bypass line 23 and the first pipeline 21 is 1:3-7.
According to some specific embodiments of the utility model, wherein the interior diameter ratio of bypass line 23 and the first pipeline 21
For 1:5.
According to some specific embodiments of the utility model, wherein bypass line 23 and the first pipeline 21 and the second pipeline
22 tie point is respectively less than or equal to 500mm with the distance of vacuum main valve 11.
According to some specific embodiments of the utility model, wherein bypass line 23 is the pipeline of DN300mm.
According to some specific embodiments of the utility model, wherein by-passing valve 14 uses hydraulic-driven.
On the other hand, the utility model additionally provides a kind of application device described in the utility model to RH vacuum system tune
The method for saving vacuum.
According to some specific embodiments of the utility model, wherein the method includes first closing after every furnace is disposed
Vacuum main valve 11 is closed, vacuum breaker is carried out to vacuum tank 12 and the first pipeline 21, when having vacuumized conditions before the processing of lower furnace, first
By-passing valve 14 is opened, after by-passing valve pressure at both sides balance, vacuum main valve 11 is opened, closes by-passing valve, restart vacuum pump 13.
According to some specific embodiments of the utility model, wherein the method includes first closing after every furnace is disposed
Vacuum main valve 11 is closed, the air valve for opening RH equipment for vacuum refining carries out vacuum breaker to vacuum tank 12 and the first pipeline 21, surely
Pneumatics power closes air valve when being greater than 95kpa, when having vacuumized conditions before the processing of lower furnace, by-passing valve 14 is first opened, to side
When port valve two sides vacuum pressure difference is less than 50kpa, vacuum main valve 11 is opened, by-passing valve is closed, restarts vacuum pump 13.
According to some specific embodiments of the utility model, wherein the method includes first closing after every furnace is disposed
Vacuum main valve 11 is closed, vacuum breaker carried out to vacuum tank 12 and the first pipeline 21, vacuum pump 13 and the second pipeline 22 not vacuum breaker, into
Row pressure maintaining processing first opens by-passing valve 14 when having vacuumized conditions before the processing of lower furnace, balances to by-passing valve pressure at both sides
Afterwards, vacuum main valve 11 is opened, by-passing valve is closed, restarts vacuum pump 13.
Vacuum main valve is closed at the end of RH furnace every furnace smelting molten steel, carries out vacuum breaker, and vacuum pump side to vacuum tank side
Not vacuum breaker carries out pressure maintaining processing and first opens by-passing valve when next furnace starts to vacuumize, because by-passing valve caliber is small, in two sides
It is easily opened when pressure difference is larger, after two sides vacuum pressure balance, then opens vacuum main valve, and start vacuum pump.
In conclusion the utility model provides a kind of RH vacuum system adjusting vacuum plant.The device of the utility model
It has the advantages that
By, to the method for vacuum pump side system not vacuum breaker, being balanced vacuum using by-passing valve after RH application of vacuum
Main valve two sides vacuum pressure can shorten vacuum system emptying time with quick start vacuum pump system, play and save Jie such as steam
Matter consumption, shortens the effect of RH process cycle.
Detailed description of the invention
Fig. 1 is the schematic device of embodiment 1.
Specific embodiment
The implementation process of the utility model and the beneficial effect of generation are described in detail below by way of specific embodiment, it is intended to help
It helps reader to more fully understand the essence and feature of the utility model, does not limit the scope of the present invention.
Embodiment 1
Referring to Fig. 1, a kind of RH vacuum system adjusting vacuum plant provided by the embodiment of the utility model, comprising: vacuum master
Valve 11, the first pipeline 21,22 bypass line 22 of the second pipeline and by-passing valve 14.First pipeline, 21 one end and vacuum main valve 11 connect
It connects, the other end is connect with the vacuum tank 12 of RH equipment for vacuum refining；Second pipeline, 22 one end is connect with vacuum main valve, the other end with
Vacuum pump 13 connects.
Wherein by-passing valve 14 is mounted on bypass line 22, and diameter valve about DN300mm, this diameter valve is according to two side pressures
It is determined the time required to difference and balance pressure.The interior diameter ratio of bypass line 23 and the first pipeline 21 is 1:5.
In embodiment, after every furnace is disposed, vacuum main valve 11 is first closed, opens the air valve of RH equipment for vacuum refining
Sky is carried out brokenly to vacuum tank 12 and the first pipeline 21, closes air valve, vacuum pump 13 and second when vacuum pressure is greater than 95kpa
Vacuum breaker, progress pressure maintaining processing do not open by-passing valve 14 first, wait bypass when having vacuumized conditions before lower furnace processing to pipeline 22
When valve two sides vacuum pressure difference is less than 50kpa, vacuum main valve 11 is opened, closes by-passing valve, starts vacuum pump 13.
In embodiment, because vacuum pump 13 and the second pipeline 22 do not carry out brokenly vacancy reason, vacuum pressure is kept substantially
Pressure value at the end of upper one heat steel water when opening by-passing valve 14, can be opened quickly after 11 pressure at both sides of vacuum main valve balance
Dynamic vacuum pump 13, reduces emptying time in vacuum line, and then terminate the dielectric dissipations such as steam, shortens RH process cycle.Pass through
The device of the utility model is taken, final pumps emptying time, about 2min can be saved.(every furnace period by taking 210tRH as an example
48min), the steam of the saving thus calculated the ÷ 48=0.56t of about 13.4t × 2, relative to original process, every furnace can be saved about
0.56t steam.To produce the calculation of 20 furnace gauges daily, the number of days that works in year is 300 days, then year saves steam consumption about 3360t, converts into mark
Quasi- coal amount is 326 tons, about 250,000 yuan of the benefit generated every year, about 0.2 yuan of ton steel save the cost.
Claims (5)
1. a kind of RH vacuum system adjusts vacuum plant, wherein described device include vacuum main valve (11), the first pipeline (21),
Second pipeline (22), bypass line (23) and by-passing valve (14), wherein one end of vacuum main valve (11) is arranged for true with RH
The second pipeline (22) for being controlled to a vacuum pump is arranged in the first pipeline (21) of empty purifier connection, the other end；And pass through
Bypass line (23) connects the first pipeline (21) and the second pipeline (22), and the by-passing valve (14) is arranged in bypass line
(23) on, and the setting relationship in parallel with vacuum main valve (11) formation.
2. RH vacuum system according to claim 1 adjusts vacuum plant, wherein bypass line (23) interior diameter and bypass
Valve (14) interior diameter is DN150-300.
3. RH vacuum system according to claim 1 or 2 adjusts vacuum plant, wherein the first pipeline (21), the second pipeline
(22) identical with the interior diameter of vacuum main valve (11), the interior diameter ratio of bypass line (23) and the first pipeline (21) is 1:(3-7).
4. RH vacuum system according to claim 1 adjusts vacuum plant, wherein bypass line (23) and the first pipeline
(21) interior diameter ratio is 1:5.
5. RH vacuum system according to claim 1 adjusts vacuum plant, wherein bypass line (23) and the first pipeline
(21) and the tie point of the second pipeline (22) is respectively less than or equal to 500mm with the distance of vacuum main valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244641.8U CN209292392U (en) | 2018-12-28 | 2018-12-28 | A kind of RH vacuum system adjusting vacuum plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244641.8U CN209292392U (en) | 2018-12-28 | 2018-12-28 | A kind of RH vacuum system adjusting vacuum plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209292392U true CN209292392U (en) | 2019-08-23 |
Family
ID=67649780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822244641.8U Active CN209292392U (en) | 2018-12-28 | 2018-12-28 | A kind of RH vacuum system adjusting vacuum plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209292392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402330A (en) * | 2018-12-28 | 2019-03-01 | 中冶京诚工程技术有限公司 | A kind of RH vacuum system adjusts vacuum plant and application |
| CN112609044A (en) * | 2020-12-11 | 2021-04-06 | 北京首钢股份有限公司 | RH pre-vacuumizing device and method |
-
2018
- 2018-12-28 CN CN201822244641.8U patent/CN209292392U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402330A (en) * | 2018-12-28 | 2019-03-01 | 中冶京诚工程技术有限公司 | A kind of RH vacuum system adjusts vacuum plant and application |
| CN112609044A (en) * | 2020-12-11 | 2021-04-06 | 北京首钢股份有限公司 | RH pre-vacuumizing device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209292392U (en) | A kind of RH vacuum system adjusting vacuum plant | |
| CN109402330A (en) | A kind of RH vacuum system adjusts vacuum plant and application | |
| CN101916595B (en) | Method for vacuumizing and exhausting reactor primary circuit of pressurized water reactor nuclear power station | |
| CN108823357B (en) | Degassing method of degassing system based on flexible mechanical vacuum pump set | |
| CN107116189B (en) | Magnesium alloy casting-rolling liquid supply system and alloy liquid level control method thereof | |
| CN101900248A (en) | Long-distance pipeline transportation process of lateritic nickel ores | |
| CN101704085B (en) | Vacuum exhaust system for die casting | |
| CN204276864U (en) | A kind of die casting machine oil-feeding control system | |
| CN110714121A (en) | Method for reducing consumption of organic phase in uranium molybdenum extraction process | |
| CN107250396B (en) | Sulfuric acid adds equipment and its method of operation | |
| CN205254004U (en) | Press air cushion gas circuit controlling means | |
| CN201391751Y (en) | Energy dissipation device for undisturbed switch in operation mode of multistage pumping station | |
| CN104120252A (en) | Ore pulp cooling method and device for pressurized oxygen leaching of zinc sulfide concentrate | |
| BR112023026260A2 (en) | PROCESS AND SYSTEM FOR SPONGE IRON PRODUCTION | |
| CN212273724U (en) | Anti-leakage device for curing and degassing process of styrene-butadiene latex | |
| CN209860050U (en) | Acid adding equipment for storage battery and vacuumizing device thereof | |
| CN214210457U (en) | Polyester resin production pressure difference control device | |
| CN219807979U (en) | RH vacuum system adjusts vacuum device | |
| CN203807512U (en) | Vacuum-pumping device of RH refining furnace | |
| CN207108479U (en) | Synthesize the retracting device of hydrogen in ammonia relief gas | |
| CN210134146U (en) | Device for improving output of sodium molybdate | |
| CN203258639U (en) | Novel pressure releasing control system for evaporative cooling deaerator | |
| CN205164195U (en) | A device for separation of noble metal feed liquid | |
| CN113564621B (en) | Tail chlorine treatment device and method for whole-flow production of titanium sponge | |
| CN104946900B (en) | A kind of aluminium liquid off gas system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |