CN202968594U - Dry-type dedusting hydraulic system - Google Patents
Dry-type dedusting hydraulic system Download PDFInfo
- Publication number
- CN202968594U CN202968594U CN2012206158585U CN201220615858U CN202968594U CN 202968594 U CN202968594 U CN 202968594U CN 2012206158585 U CN2012206158585 U CN 2012206158585U CN 201220615858 U CN201220615858 U CN 201220615858U CN 202968594 U CN202968594 U CN 202968594U
- Authority
- CN
- China
- Prior art keywords
- valve
- mouth
- way
- oil
- coal gas
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y02W30/54—
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a dry-type dedusting hydraulic system, which belongs to the field of control technology. According to the technical scheme, the dry-type dedusting hydraulic system comprises a coal gas releasing valve cylinder, a coal gas recycling valve cylinder, a releasing valve cylinder control device, a recycling valve cylinder control device and an emergency control device. The emergency control device comprises an energy accumulator, a one-way throttle valve, three hydraulic control one-way valves and three cartridge valves, wherein the liquid inlet of the first hydraulic control one-way valve is connected with a pressure oil pipe while the liquid outlet is connected with the energy accumulator through the one-way throttle valve and is connected with the upper cavities of the coal gas releasing valve cylinder and the coal gas recycling valve cylinder through the first cartridge valve; the oil inlets of the second cartridge valve and the second hydraulic control one-way valve are connected with the lower cavity of the coal gas recycling valve cylinder while the liquid outlets are connected with an oil recycling pipe; and the oil inlets of the third cartridge valve and the third hydraulic control one-way valve are connected with the lower cavity of the coal gas recycling valve cylinder while the liquid outlets are connected with the oil recycling pipe. When the flue gas in a blast furnace is in the explosion limit range, the dry-type dedusting hydraulic system can quickly ignite the coal gas so as to diffuse the coal gas, so that the leakage explosion in an electrostatic deduster is prevented. Therefore, the smooth production of the blast furnace is ensured.
Description
Technical field
The utility model relates to and a kind ofly using in the converter gas dry cleaning system, is used for controlling the hydraulic efficiency system of coal gas recovery cup valve and coal gas diffusion cup valve, belongs to the control techniques field.
Background technology
Can produce the flue gas that contains in a large number coal gas in the converting process of steelwork converter, these flue gases need to use specific equipment to process.At present, the treatment facility of converter gas mainly contains two kinds: a kind of is the system for wet purification of converter gas purification and coal-gas recovering; A kind of is the dry cleaning system of gas cleaning and coal-gas recovering, and to have an environmental pollution little due to dry cleaning system, and the purification efficiency advantages of higher is now by ashamed dominate.Dry type gas cleaning and gas recovery system mainly by coal gas recovery cup valve, coal gas diffusion cup valve and the hydraulic efficiency system that is used for driving these two cup type valves form, when meeting, the carbon monoxide in flue gas and oxygen content reclaim when requiring, coal gas recovery cup valve is opened, coal gas diffusion cup valve cuts out, and carries out the recovery of coal gas; Do not reclaim when requiring when the carbon monoxide in flue gas and oxygen content meet, coal gas diffusion cup valve is opened, and coal gas recovery cup valve is closed, and carries out coal gas ignition and diffuses.In the converting process of converter, hydraulic efficiency system drives two cup type valves, flue gas is switched fast, to reclaim coal gas of converter as much as possible between chimney and gas chamber.Because existing hydraulic efficiency system ubiquity the shortcoming that response speed is slow, failure rate is high, not only had a strong impact on the recovery of coal gas, and if coal gas be in the limits of explosion scope, in electrostatic precipitator also venting of dust explosion might occur, cause serious accident.Therefore, how to improve the reliability of dry method dust hydraulic efficiency system, guarantee that the security of blast furnace production becomes the present difficult problem that faces of relevant technologies personnel.
The utility model content
The purpose of this utility model is to provide a kind of fast response time, dry method dust hydraulic efficiency system that reliability is high, guarantees that the safety of blast furnace production is carried out.
The alleged problem of the utility model realizes with following technical proposals:
A kind of dry method dust hydraulic efficiency system, it comprises gas bleeding valve oil cylinder 15, coal gas recovery valve oil cylinder 26, diffusion valve cylinder control device, recovery valve cylinder control device and emergency control apparatus, described emergency control apparatus comprises energy storage 1, one-way throttle valve 3, three hydraulic control one-way valves and three cartridge valves, the fluid inlet of the first hydraulic control one-way valve 4 connects pressure oil pipe, and liquid outlet connects energy storage 1 and connects the epicoele of gas bleeding valve oil cylinder 15 and coal gas recovery valve oil cylinder 26 through the first cartridge valve 5 through one-way throttle valve 3; The oil-in of the second cartridge valve 16 and the second hydraulic control one-way valve 17 connects the cavity of resorption of gas bleeding valve oil cylinder 15, and liquid outlet takes back oil pipe; The oil-in of the 3rd cartridge valve 27 and the 3rd hydraulic control one-way valve 28 connects the cavity of resorption of coal gas recovery valve oil cylinder 26, and liquid outlet takes back oil pipe.
Above-mentioned dry method dust hydraulic efficiency system, described diffusion valve cylinder control device comprises the 4th hydraulic control one-way valve 10, electromagnetic shut-off valve 11 and servo-valve 12, the A mouth of electromagnetic shut-off valve 11 connects the cavity of resorption of gas bleeding valve oil cylinder 15, the B mouth connects the epicoele of gas bleeding valve oil cylinder 15 through the 4th hydraulic control one-way valve 10, the A mouth of servo-valve 12 and B mouth connect respectively P mouth and the T mouth of electromagnetic shut-off valve 11, and P mouth and the T mouth of servo-valve 12 connect respectively pressure oil pipe and used oil pipe.
Above-mentioned dry method dust hydraulic efficiency system, described recovery valve cylinder control device comprises the first double back oil throttling valve 23, the first dual hydraulic control one-way valve 24 and reversing valve 25, the A mouth of described reversing valve 25 and B mouth connect respectively cavity of resorption and the epicoele of coal gas recovery valve oil cylinder 26 successively through the first dual hydraulic control one-way valve 24 and the first double back oil throttling valve 23, P mouth and the T mouth of reversing valve 25 connect respectively pressure oil pipe and used oil pipe.
Above-mentioned dry method dust hydraulic efficiency system, described diffusion valve cylinder control device also comprises manual control loop, described manual control loop comprises the second double back oil throttling valve 9, the second dual hydraulic control one-way valve 21 and 3-position 4-way solenoid operated directional valve 22, the A mouth of described 3-position 4-way solenoid operated directional valve 22 and B mouth connect respectively cavity of resorption and the epicoele of gas bleeding valve oil cylinder 15 successively through the second dual hydraulic control one-way valve 21 and the second double back oil throttling valve 9, P mouth and the T mouth of 3-position 4-way solenoid operated directional valve 22 connect respectively pressure oil pipe and used oil pipe.
Above-mentioned dry method dust hydraulic efficiency system is provided with plate filter 13 between the P of servo-valve 12 mouth and pressure oil pipe.
Above-mentioned dry method dust hydraulic efficiency system is connected to pressure relay 2 on the connecting pipeline of described energy storage 1, the signal output part of described pressure relay 2 connects the PLC Controlling System.
The utility model has been set up emergency control apparatus in the hydraulic efficiency system of converter gas dry purification equipment, when this device can be in blast furnace flue gas be in the limits of explosion scope, close rapidly coal gas recovery cup valve, and turn on the gas-fire and diffuse a glass valve, carry out the ignition bleeding of coal gas, prevent from venting of dust explosion occurs in electrostatic precipitator, thereby guarantee carrying out smoothly of blast furnace production.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the pipeline connecting figure of energy storage;
Fig. 2 is control strategy schematic diagram of the present utility model;
Fig. 3 is control strategy schematic diagram of the present utility model.
in figure, each label is: 1, energy storage, 2, pressure relay, 3, one-way throttle valve, 4, the first hydraulic control one-way valve, 5, the first cartridge valve, 6, 7, 8, magnetic valve, 9, the second double back oil throttling valve, 10, the 4th hydraulic control one-way valve, 11, electromagnetic shut-off valve, 12, servo-valve, 13, plate filter, 14, solenoid operated directional valve, 15, gas bleeding valve oil cylinder (band displacement sensor), 16, the second cartridge valve, 17, the second hydraulic control one-way valve, 18, 19, 20, magnetic valve, 21, the second dual hydraulic control one-way valve, 22, the 3-position 4-way solenoid operated directional valve, 23, the first double back oil throttling valve, 24, the first dual hydraulic control one-way valve, 25, reversing valve, 26, coal gas recovery valve oil cylinder (band displacement sensor), 27, the 3rd cartridge valve, 28, the 3rd hydraulic control one-way valve, 29, 30, 31, magnetic valve.
Embodiment
When the utility model is in the preparation work state, pressure oil enters into energy storage 1 by the first hydraulic control one-way valve 4, one-way throttle valve 3, pressure relay 2 detects the pressure of energy storage 1 internal pressure oil in real time, and output signal is delivered to the PLC Controlling System, this moment, magnetic valve 6,7,8 a held electricly, and the first hydraulic control one-way valve 4, the first cartridge valve 5 are in blocking.In the diffusion valve cylinder control device by the second cartridge valve 16, the second hydraulic control one-way valve 17, the second dual hydraulic control one-way valve 21, electromagnetic shut-off valve 11(a must not hold the electricity) and the 4th hydraulic control one-way valve 10 make gas bleeding valve oil cylinder 15 be in blocking.In the recovery valve cylinder control device, make coal gas recovery valve oil cylinder 26 be in blocking by the 3rd cartridge valve 27, the 3rd hydraulic control one-way valve 28, the first dual hydraulic control one-way valve 24, for off-gas recovery and the actual needs that diffuses, the dry method dust hydraulic efficiency system has three kinds of operating mode:
1. automatic control mode
To CO, CO in flue gas
2And O
2Content analyze, when CO content in smoke greater than prescribed value 30%, and oxygen level is during less than prescribed value 2%, and in the diffusion valve cylinder control device, solenoid operated directional valve 14 a hold electricly, the 4th hydraulic control one-way valve 10 is opened, electromagnetic shut-off valve 11 a hold electricly simultaneously, and electromagnetic shut-off valve 11 is connected the oil circuit between servo-valve 12 and gas bleeding valve oil cylinder 15, under the electric signal effect, servo-valve 12 makes the 15 cavity of resorption oil-feeds of gas bleeding valve oil cylinder, epicoele oil return.when gas bleeding valve oil cylinder 15 pistons rise to omnidistance 30% (coal gas diffusion cup valve is closed to 30%), in the recovery valve cylinder control device, reversing valve 25 b hold electricly, pressure oil is opened the first dual hydraulic control one-way valve 24, enter the cavity of resorption of coal gas recovery valve oil cylinder 26 through the first double back oil throttling valve 23, the epicoele oil return, the piston of coal gas recovery valve oil cylinder 26 rises, be opened to 60% when rising to omnidistance 60%(coal gas recovery cup valve) time, gas bleeding valve oil cylinder 15 pistons continue to rise, the piston of coal gas recovery valve oil cylinder 26 also continues to rise, when coal gas recovery cup valve is opened fully like this, coal gas diffusion cup valve cuts out fully, carry out coal-gas recovering.
C O content is not more than prescribed value 30% in flue gas, or oxygen level is during greater than prescribed value 2%, in the situation that other conditions are constant, servo-valve 12 control pressure oil under the effect of electric signal enters the epicoele of gas bleeding valve oil cylinder 15, the cavity of resorption oil return, gas bleeding valve oil cylinder 15 pistons descend, be opened to 30% when dropping to omnidistance 30%(coal gas diffusion cup valve) time, reversing valve 25 a hold electricly, pressure oil enters epicoele, the cavity of resorption oil return, coal gas recovery valve oil cylinder 26 pistons continue to drop to the 60%(coal gas recovery cup valve and are closed to 60%), then two oil cylinders continue action, until closing fully with coal gas diffusion cup valve, opens fully coal gas recovery cup valve, carrying out coal gas ignition diffuses.
2. manual master mode
operator's hand operation button, the b of 3-position 4-way solenoid operated directional valve 22 holds electricly in the diffusion valve cylinder control device, pressure oil is through the second dual hydraulic control one-way valve 21, the second double back oil throttling valve 9 enters the cavity of resorption of gas bleeding valve oil cylinder 15, the epicoele oil return, piston rises, coal gas diffusion cup valve cuts out, the b of reversing valve 25 holds electricly in the recovery valve cylinder control device simultaneously, pressure oil is through the first dual hydraulic control one-way valve 24, the first double back oil throttling valve 23 enters the cavity of resorption of coal gas recovery valve oil cylinder 26, the epicoele oil return, piston rises, coal gas recovery valve is opened, carry out coal-gas recovering.
when operator's hand operation button, the a of 3-position 4-way solenoid operated directional valve 22 holds electricly in the diffusion valve cylinder control device, pressure oil is through the second dual hydraulic control one-way valve 21, the second double back oil throttling valve 9 enters the epicoele of gas bleeding valve oil cylinder 15, the cavity of resorption oil return, piston descends, coal gas diffusion cup valve is opened, the a of reversing valve 25 holds electricly in the recovery valve cylinder control device simultaneously, pressure oil is through the first dual hydraulic control one-way valve 24, the first double back oil throttling valve 23 enters the epicoele of coal gas recovery valve oil cylinder 26, the cavity of resorption oil return, piston descends, coal gas recovery valve cuts out, carry out coal gas diffusion.
3. emergent master mode
in case of emergency, in emergency control apparatus, magnetic valve 6, 7, dead electricity, the first cartridge valve 5 is opened, pressure oil enters SP pipeline (emergency pressure oil circuit), in the diffusion valve cylinder control device, pressure oil arrives the epicoele of gas bleeding valve oil cylinder 15, while magnetic valve 18, 19, 20 dead electricity, the second cartridge valve 16, the second hydraulic control one-way valve 17 is opened, gas bleeding valve oil cylinder 15 cavity of resorption drainings, piston descends, coal gas diffusion cup valve is opened, simultaneously, pressure oil in the SP pipeline enters the epicoele of coal gas recovery valve oil cylinder 26, magnetic valve 29, 30, 31 dead electricity, the 3rd cartridge valve 27, the 3rd hydraulic control one-way valve 28 is opened, coal gas recovery valve oil cylinder 26 cavity of resorption drainings, piston descends, coal gas recovery cup valve is closed.So far, in case of emergency, coal gas diffusion cup valve is opened and is diffused.
The utility model has taken into full account and has run into various situations in situ production.When emergent master mode, adopt two magnetic valves to work simultaneously, if one has fault, can not affect fuel feeding yet, the pressure oil of SP pipeline (emergency pressure oil circuit) only just enters the epicoele of gas bleeding valve oil cylinder 15 and coal gas recovery valve oil cylinder 26 through a check valve, cavity of resorption draining oil circuit is again to be worked simultaneously (one of them has fault also can not affect work) by three magnetic valves, the security that has greatly improved the dry method dust hydraulic efficiency system.The utility model adopts servo control mode, has improved Rate of Converter Gas Recovery.
Claims (6)
1. dry method dust hydraulic efficiency system, it is characterized in that, it comprises gas bleeding valve oil cylinder (15), coal gas recovery valve oil cylinder (26), the diffusion valve cylinder control device, recovery valve cylinder control device and emergency control apparatus, described emergency control apparatus comprises energy storage (1), one-way throttle valve (3), three hydraulic control one-way valves and three cartridge valves, the fluid inlet of the first hydraulic control one-way valve (4) connects pressure oil pipe, liquid outlet connects energy storage (1) and connects the epicoele of gas bleeding valve oil cylinder (15) and coal gas recovery valve oil cylinder (26) through the first cartridge valve (5) through one-way throttle valve (3), the oil-in of the second cartridge valve (16) and the second hydraulic control one-way valve (17) connects the cavity of resorption of gas bleeding valve oil cylinder (15), and liquid outlet takes back oil pipe, the oil-in of the 3rd cartridge valve (27) and the 3rd hydraulic control one-way valve (28) connects the cavity of resorption of coal gas recovery valve oil cylinder (26), and liquid outlet takes back oil pipe.
2. dry method dust hydraulic efficiency system according to claim 1, it is characterized in that, described diffusion valve cylinder control device comprises the 4th hydraulic control one-way valve (10), electromagnetic shut-off valve (11) and servo-valve (12), the A mouth of electromagnetic shut-off valve (11) connects the cavity of resorption of gas bleeding valve oil cylinder (15), the B mouth connects the epicoele of gas bleeding valve oil cylinder (15) through the 4th hydraulic control one-way valve (10), the A mouth of servo-valve (12) and B mouth connect respectively P mouth and the T mouth of electromagnetic shut-off valve (11), P mouth and the T mouth of servo-valve (12) connect respectively pressure oil pipe and used oil pipe.
3. described dry method dust hydraulic efficiency system according to claim 1 and 2, it is characterized in that, described recovery valve cylinder control device comprises the first double back oil throttling valve (23), the first dual hydraulic control one-way valve (24) and reversing valve (25), the A mouth of described reversing valve (25) and B mouth connect respectively cavity of resorption and the epicoele of coal gas recovery valve oil cylinder (26) successively through the first dual hydraulic control one-way valve (24) and the first double back oil throttling valve (23), P mouth and the T mouth of reversing valve (25) connect respectively pressure oil pipe and used oil pipe.
4. dry method dust hydraulic efficiency system according to claim 3, it is characterized in that, described diffusion valve cylinder control device also comprises manual control loop, described manual control loop comprises the second double back oil throttling valve (9), the second dual hydraulic control one-way valve (21) and 3-position 4-way solenoid operated directional valve (22), the A mouth of described 3-position 4-way solenoid operated directional valve (22) and B mouth connect respectively cavity of resorption and the epicoele of gas bleeding valve oil cylinder (15) successively through the second dual hydraulic control one-way valve (21) and the second double back oil throttling valve (9), P mouth and the T mouth of 3-position 4-way solenoid operated directional valve (22) connect respectively pressure oil pipe and used oil pipe.
5. dry method dust hydraulic efficiency system according to claim 4, is characterized in that, is provided with plate filter (13) between the P mouth of servo-valve (12) and pressure oil pipe.
6. dry method dust hydraulic efficiency system according to claim 5, is characterized in that, be connected to pressure relay (2) on the connecting pipeline of described energy storage (1), the signal output part of described pressure relay (2) connects the PLC Controlling System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206158585U CN202968594U (en) | 2012-11-20 | 2012-11-20 | Dry-type dedusting hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206158585U CN202968594U (en) | 2012-11-20 | 2012-11-20 | Dry-type dedusting hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202968594U true CN202968594U (en) | 2013-06-05 |
Family
ID=48509694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206158585U Expired - Fee Related CN202968594U (en) | 2012-11-20 | 2012-11-20 | Dry-type dedusting hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202968594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089821A (en) * | 2016-08-29 | 2016-11-09 | 中国重型机械研究院股份公司 | A kind of coal-gas recovering bell-shaped valve hydraulic control device |
-
2012
- 2012-11-20 CN CN2012206158585U patent/CN202968594U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089821A (en) * | 2016-08-29 | 2016-11-09 | 中国重型机械研究院股份公司 | A kind of coal-gas recovering bell-shaped valve hydraulic control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201340329Y (en) | Pressure testing device of power station valve | |
| CN101550900B (en) | Valve control device and control method thereof | |
| CN202968594U (en) | Dry-type dedusting hydraulic system | |
| CN205918670U (en) | Beat sign indicating number hydraulic press hydraulic control system | |
| CN200985771Y (en) | Low pressure gas generating field well head emergency cut-out valve | |
| CN202400701U (en) | Hydraulic control system for cage stabilizing cradles and car arresters | |
| CN201801484U (en) | Hydraulic switch of integrated coke oven | |
| CN203836610U (en) | Nitrogen out-conveying pipeline | |
| CN204694091U (en) | A kind of recovery system of electric furnace zinc smelting tail gas | |
| CN103758505B (en) | Drilling tool well head method for security protection | |
| CN207608569U (en) | A kind of online plugging device for replacing blast furnace bucket pressure equalizing blow off valve | |
| CN201746567U (en) | Hydraulic quick-acting switching-off control device for gas switching-off valve used for blast stove | |
| CN104949533B (en) | A kind of recovery system of electric furnace zinc smelting tail gas and its control method | |
| CN203939494U (en) | Drilling tool well head security protection and control device | |
| CN108204610A (en) | A kind of intelligent and safe gas stove | |
| CN202732517U (en) | Safety interlocking oil way of gas-making hydraulic control valve station of gas furnace | |
| CN210176883U (en) | Comprehensive purification and recovery system for pressure-equalizing and bleeding coal gas of blast furnace charging bucket | |
| CN208920078U (en) | A kind of flare gas recovery processing system for power generation | |
| CN200971369Y (en) | Accident lifting mechanism of converter oxygen lance | |
| CN102011757B (en) | Hydraulic system | |
| CN205401265U (en) | Activity petticoat pipe lift hydraulic control system | |
| CN206515016U (en) | A kind of turbocharger waterway sealing propertytest system | |
| CN201090557Y (en) | Crawler loader operating oil way no-voltage protection system | |
| CN205420470U (en) | Oxygen rifle promotes pneumatic control system | |
| CN205919333U (en) | Coke oven crude gas automatic ignition diffuses device |
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: 20130605 Termination date: 20141120 |
|
| EXPY | Termination of patent right or utility model |