CN204251633U - For preventing the change water speed cooling system of cooling stave scaling loss - Google Patents
For preventing the change water speed cooling system of cooling stave scaling loss Download PDFInfo
- Publication number
- CN204251633U CN204251633U CN201420759344.6U CN201420759344U CN204251633U CN 204251633 U CN204251633 U CN 204251633U CN 201420759344 U CN201420759344 U CN 201420759344U CN 204251633 U CN204251633 U CN 204251633U
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- water
- control valve
- cooling
- flow control
- cooling stave
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Abstract
The utility model discloses a kind of for preventing the change water speed cooling system of cooling stave scaling loss, comprise soft water pond and PLC control system, also comprise the pressure pump, water-supply pipe, water supply flow control valve, water supply flow meter, cooling stave, water flow meter, rising pipe and the water flow control valve that are connected successively with soft water pond, described water flow control valve is connected with soft water pond.The utility model has accurately change Local cooling water flow state, destroys the gasification moisture film that high calorie is formed, the beneficial effect of protection cooling system and water cooler.
Description
Technical field
The utility model relates to a kind of blast furnace cooling system, specifically a kind of for preventing the change water speed cooling system of cooling stave scaling loss.
Background technology
Blast furnace is a kind of ironmaking equipment, and Modern Large Blast Furnaces internal volume is generally more than 2000m
3, mostly adopt soft water airtight circulating cooling system to cool, with cooling stave as water cooler.The soft water cooling system of large blast furnace body generally adopts tandem piping arrangement pattern from bottom to top, water coolant enters cooling stave from bottom house endless tube, after upwards flowing through each piece of cooling stave, enter soft water pond from the backwater endless tube of upper blast furnace, realize the operation of whole soft water system.Blast furnace ironmaking carries out in the space that cooling stave from down to up surrounds.Furnace charge loads in stove from upper blast furnace, and high-temperature coal air-flow moves upward from bottom, and heat up furnace charge on the one hand, and thawing on the other hand, reduction ore, the slag iron melt, restored exists in the cupola well of bottom house, carries out periodic exhaustion.
In smelting process, near the position of cooling stave because there is huge thermograde, can form slag crust, suitable, the equally distributed slag crust of thickness is favourable to blast furnace operating.These slag crusts also can aborning because of temperature fluctuation simultaneously, big area comes off sometimes, cooling stave hot side washing away directly in the face of high-temperature coal air-flow, this situation is once occur very easily to produce gasification moisture film on cooling stave water wall, the transmission of blocking heat, make that cooling stave hot-face temperature is instantaneous is elevated to more than 843 DEG C, exceed the damaged temperature of cast-iron cooling wall, burn out cooling stave.
Modern Large Blast Furnaces is generally carry out BF Design according to the life-span of 15-20, once cooling stave is impaired directly will jeopardize blast furnace campaign, so must properly settle the large density heat of encephalic aborning to impact the threat caused cooling stave.
In order to tackle this impact, blast furnace cooling have employed a lot of technology.Have employed the technology of inlaying brick before cooling stave at first, namely after cooling stave installs, before cooling stave, edge builds the refractory brick of more than one deck 600mm again, because blast furnace inwall is very high, and in special-shaped distribution, after laying fireproof bricks completes, so huge refractory brick piles up more than 40 meter high, weight is huge, be difficult to fix in stove, in addition refractory brick thermal conduction is poor, the fluctuation of blast furnace internal heat flows is large, thermal stresses change is frequent, the refractory brick of building by laying bricks or stones very easily comes off in blast furnace ironmaking process, generally lay bricks blast furnace after blow-on 4-5, refractory brick is just exhausted substantially, this can cause cooling stave light face directly in the face of the impact of furnace high-temperature Gas Flow, namely about the 3 years life-span of this cooling stave, the blast furnace campaign of this design generally can only maintain 8-10.
Afterwards this body of heater masonry construction was improved, forth generation edge brick cooling stave is adopted to instead of light face cooling stave, eliminate in stove and lay bricks, edge brick thickness changes between 200-300mm, this structure can protect the combination improving refractory brick and cooling stave, but is ore, coke after all in stove, and the decline of these furnace charges is is inevitably worn and torn the refractory materials of cooling stave, the blast furnace opening of general this design is after 6 years, and edge brick is remaining undesirable root only.Generally speaking, the problem that this cooling stave one of in use running into is maximum is exactly impact with the hot-fluid that constant water flow, constant water speed deal with varied, the distribution, the intensity that occur in blast furnace different.
Utility model content
The purpose of this utility model is the deficiency existed to solve above-mentioned background technology; a kind of accurately change Local cooling water flow state is proposed; destroy the gasification moisture film that high calorie is formed, the change water speed cooling system for preventing cooling stave scaling loss of protection cooling system and water cooler.
In order to realize above object, it is a kind of for preventing the change water speed cooling system of cooling stave scaling loss that the utility model provides, comprise soft water pond and PLC control system, it is characterized in that: also comprise the pressure pump, water-supply pipe, water supply flow control valve, water supply flow meter, cooling stave, water flow meter, rising pipe and the water flow control valve that are connected successively with soft water pond, described water flow control valve is connected with soft water pond.
Preferably, water supply reverse checkvalve is provided with between described water-supply pipe and water supply flow control valve.
The beneficial effects of the utility model: adopt the flow velocity in water supply flow control valve and water flow control valve controlled cooling model wall and flow; reach and accurately change Local cooling water flow state; destroy the gasification moisture film that high calorie is formed, the object of protection cooling system and water cooler.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: soft water pond 1, PLC control system 2, pressure pump 3, water-supply pipe 4, water supply flow control valve 5, water supply flow meter 6, cooling stave 7, water flow meter 8, rising pipe 9, water flow control valve 10, water supply reverse checkvalve 11.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment: as shown in Figure 1 a kind of for prevent cooling stave scaling loss change water speed cooling system, comprise soft water pond 1 and also comprise with PLC control system 2 pressure pump 3, water-supply pipe 4, water supply flow control valve 5, water supply flow meter 6, cooling stave 7, water flow meter 8, rising pipe 9 and the water flow control valve 10 that are connected successively with soft water pond 1, described water flow control valve 10 is connected with soft water pond 1.Water supply reverse checkvalve is provided with between described water-supply pipe 4 and water supply flow control valve 5.Described pressure pump 3, water supply flow control valve 5, water supply flow meter 6, water flow meter 8, water flow control valve 10 are connected with PLC control system 2.
Wherein, soft water pond 1 is for storing the soft water of make up water, and responsibility system is for the soft water of loss.
PLC control system 2 is by the situation according to operation of blast furnace, implement to determine position that slag crust comes off, time, degree, and determine that the valve of which part needs to open or close according to the program realizing setting, specification, and dependent instruction is sent to subregion flow control valve and pressure pump 3.
Water-supply pipe 4 is for being transported to the soft water in soft water pond 1 in the pipe network system of needs.
Pressure pump 3 is for being pressurized to the hydraulic pressure of needs by ducted water coolant, generally speaking, the setting of hydraulic pressure needs to set according to head size, pipeline resistance damage, piping arrangement situation, and different blast furnaces differs greatly.
Water supply flow control valve 5 is for controlling the water supply flow of specific region.
Water supply reverse checkvalve 11 overflows from supplementary pipeline for preventing original water coolant of blast-furnace body, protects the stable of cooling system entirety with this.
Water supply flow meter 6 for measuring channel actual flow, thus regulates the aperture of water supply flow control valve 5.
Water flow meter 8 is for measuring channel actual flow, and assure feed water is consistent with aquifer yield.
Water flow control valve 10 is for controlling water return pipeline pressure, make total pipeline pressure match, avoid because of water return pipeline vertically decline cause vacuumize the impact of phenomenon on whole water-supply pipe 4 road pressure distribution, the always water yield is made to equal total supply, avoid backwater amount excessive, destroy the steady running of whole cooling system.
Rising pipe 9 is for the transport of backwater.
This implements moisturizing for preventing the change water of cooling stave scaling loss speed cooling system from allowing PLC control related valve localized region when needed; by increasing the cooling water flow flowing through this position; accelerate water coolant flow velocity; improve heat transfer boundary condition; destroy the mechanism forming gasification moisture film, eliminate " vent plug ", make when large slag crust comes off; cooling stave 7 hot side can generate protection slag blanket very soon, and cooling stave 7 hot-face temperature is maintained below the damaged temperature spot of cooling stave 7.
The above is only preferred embodiment of the present utility model, not does any pro forma restriction to structure of the present utility model.Every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of the technical solution of the utility model.
Claims (2)
1. one kind for prevent cooling stave scaling loss change water speed cooling system, comprise soft water pond (1) and PLC control system (2), it is characterized in that: also comprise the pressure pump (3) be connected successively with soft water pond (1), water-supply pipe (4), water supply flow control valve (5), water supply flow meter (6), cooling stave (7), water flow meter (8), rising pipe (9) and water flow control valve (10), described water flow control valve (10) is connected with soft water pond (1), described pressure pump (3), water supply flow control valve (5), water supply flow meter (6), water flow meter (8), water flow control valve (10) is connected with PLC control system (2).
2. according to claim 1 for preventing the change water speed cooling system of cooling stave scaling loss, it is characterized in that: between described water-supply pipe (4) and water supply flow control valve (5), be provided with water supply reverse checkvalve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759344.6U CN204251633U (en) | 2014-12-05 | 2014-12-05 | For preventing the change water speed cooling system of cooling stave scaling loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759344.6U CN204251633U (en) | 2014-12-05 | 2014-12-05 | For preventing the change water speed cooling system of cooling stave scaling loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204251633U true CN204251633U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420759344.6U Expired - Fee Related CN204251633U (en) | 2014-12-05 | 2014-12-05 | For preventing the change water speed cooling system of cooling stave scaling loss |
Country Status (1)
| Country | Link |
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| CN (1) | CN204251633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232897A (en) * | 2022-06-28 | 2022-10-25 | 武汉钢铁有限公司 | Method for regulating water quantity of blast furnace soft water closed circulation cooling system |
-
2014
- 2014-12-05 CN CN201420759344.6U patent/CN204251633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232897A (en) * | 2022-06-28 | 2022-10-25 | 武汉钢铁有限公司 | Method for regulating water quantity of blast furnace soft water closed circulation cooling system |
| CN115232897B (en) * | 2022-06-28 | 2023-05-23 | 武汉钢铁有限公司 | Method for adjusting water quantity of blast furnace soft water closed circulation cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170728 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 15, Wuhan, Hubei, Wuchang Friendship Road, No. 999, block A, floor (Wuhan Iron and steel science and technology innovation department) () Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20191205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |