CN202730151U - Blast furnace circulating water protective device - Google Patents
Blast furnace circulating water protective device Download PDFInfo
- Publication number
- CN202730151U CN202730151U CN 201220265513 CN201220265513U CN202730151U CN 202730151 U CN202730151 U CN 202730151U CN 201220265513 CN201220265513 CN 201220265513 CN 201220265513 U CN201220265513 U CN 201220265513U CN 202730151 U CN202730151 U CN 202730151U
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- blast furnace
- water
- water supply
- protective device
- circulating water
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Abstract
The utility model discloses a blast furnace circulating water protective device, belongs to the technical field of the blast furnace water supply device, and is used for protecting the water supply pipe net of the blast furnace and achieves the stable running of the water supply pipe net of the blast furnace. The technical scheme of the blast furnace circulating water protective device is that the blast furnace circulating water protective device comprises a plurality of shock-proof pressure gauges, a plurality of electric regulating valves and bypass pipes, the numbers of the shock-proof pressure gauges and the electric regulating valves are matched with the number of the water supply pumps of blast furnace circulating water, the shock-proof pressure gauges are installed on the pipe lines of the water outlets of the water supply pumps, one ends of the electric regulating valves are connected on the pipe lines between the water outlets of the water supply pumps and various control valves through bypass pipe lines, and the other ends of the electric regulating valves are connected to a suction well through the bypass pipe lines. The blast furnace circulating water protective device can achieve the stabilization of the pressure and quantity of flow of a blast furnace water supply system, and controls the pressure surge in the range of 10%, and also plays the role of air venting. The blast furnace circulating water protective device greatly improves the stability of blast furnace water supplying and the safety factor of water supply reverse stopping equipment, prevents accidents from occurring, and has significant effect of the stable production of the blast furnace.
Description
Technical field
The utility model relates to a kind of protector of circulation water of blast furnace operation, belongs to blast furnace water equipment technical field.
Background technology
The circulation water of blast furnace system is the refrigerating unit of blast furnace, is the visual plant that ensures blast furnace steady running.Stablizing of circulation water of blast furnace operation is directly connected to the control of the various parameters of blast furnace, such as furnace temperature, air quantity, combustion intensity etc.But at present domestic a lot of steel production enterprise are being developed aspect the circulation water of blast furnace running protection device and use is paid little attention to, the circulation water of blast furnace system does not generally adopt any protector, cause some inevitable problems of blast furnace waterworks ubiquity, as: in the system device handoff procedure, equipment switching employing is opened first the mode of stopping afterwards and will be caused system pressure, flow sharply to raise, the leakage accident that might cause pipeline breaking, valve spacer to damage; If switch adopting, equipment stops first the mode that opens afterwards, because vacuum breaker generally has a small amount of backwater phenomenon, if the outlet valve fault is opened untimely or vacuum breaker damages the large system pressure situation on the low side that will cause like this of backwater amount, directly have influence on the safety of tuyere cover of blast furnace, make tuyere case generation burnout failure.
The utility model content
Technical problem to be solved in the utility model provides a kind ofly can realize protecting water supply network, waterworks automatic vent, can realize again pressure, flow control in daily equipment handoff procedure simultaneously, avoids the protector of the circulation water of blast furnace of system parameter fluctuation in the equipment handoff procedure.
The technical scheme that solves the problems of the technologies described above is:
A kind of protector of circulation water of blast furnace; it is comprised of shock-proof pressure gauge, motor-driven control valve, bypass duct; shock-proof pressure gauge and motor-driven control valve are a plurality of; the quantity of the water supply pump of their quantity and circulation water of blast furnace is complementary; shock-proof pressure gauge is installed on the pipeline of water supply pump water outlet; one end of motor-driven control valve is connected on the pipeline between pump outlet and the various by-pass valve control by bypass duct, and the other end is connected to suction well by bypass duct.
The protector of above-mentioned circulation water of blast furnace, described motor-driven control valve can be hand sluice valves.
The beneficial effects of the utility model are:
Use of the present utility model can realize stablizing blast furnace waterworks pressure and flow; the fluctuation of realization system's pressure of falling the termination of pumping and flow is close to be eliminated; the pressure surge of blast furnace waterworks is controlled in 10%; be significantly less than between the waterworks pressure surge value 20-55% when not having protector; and problem very rambunctious, the utility model can also play the function into the exhaust of blast furnace waterworks in day-to-day operation.The utility model has greatly improved the stability of blast furnace waterworks and the operability that system stops equipment, and having improved supplies water stops the safety coefficient of equipment, has prevented the generation of accident, for guaranteeing that the blast furnace stably manufactured has remarkable effect.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Mark is as follows among the figure: suction well 1, the first water pump 2, the second water pump 3, the 3rd water pump 4, shock-proof pressure gauge 5, little resistance DRV 6, electrically operated valve 7, hand sluice valve 8, motor-driven control valve 9, main pipe line tensimeter 10, bypass duct 11.
Embodiment
The utility model is comprised of shock-proof pressure gauge 5, motor-driven control valve 9, bypass duct 11.
Show among the figure, shock-proof pressure gauge 5 and motor-driven control valve 9 are a plurality of, and the quantity of the water supply pump of their quantity and circulation water of blast furnace is complementary.The water supply pump of the circulation water of blast furnace of the embodiment that shows among the figure is three, to three shock-proof pressure gauges 5 and motor-driven control valve 9 should be arranged.Shock-proof pressure gauge 5 is used for showing exit of pump pressure, and motor-driven control valve 9 is used for regulating exit of pump pressure and flow.
Show among the figure that little resistance DRV 6, electrically operated valve 7, hand sluice valve 8 are arranged in the operation pipeline of every water pump of the prior art, they are connected in turn in the operation pipeline.Little resistance DRV 6 is used for preventing the aqueous reflux of pipeline when water pump shuts down; Electrically operated valve 7 is used for control exit of pump flow; Hand sluice valve 8 is water pump maintenance standby valves.
Show among the figure, shock-proof pressure gauge 5 is installed on the pipeline of water supply pump water outlet, and an end of motor-driven control valve 9 is connected on the pipeline between pump outlet and the various by-pass valve control by bypass duct 11, and the other end is connected to suction well 1 by bypass duct 11.Motor-driven control valve 9 of the present utility model also can adopt hand sluice valve.
Operating process of the present utility model is as follows:
An embodiment of the present utility model is equipped with 3 water pumps, opens 2 standby 1.Three water pumps are respectively the first water pump 2, the second water pump 3, the 3rd water pump 4, system pressure 1.7MPa, flow system flow 900m3/h.
Operational instances 1: the first water pump 2, the second water pump 3 move, and the 3rd water pump 4 is for subsequent use, and need to stop the second water pump 3 this moment, starts the 3rd water pump 4.Guarantee that system pressure can not be lower than 1.6 MPa.
(1) open the motor-driven control valve 9 of the 3rd water pump 4, open valve after, start the 3rd water pump 4.Shock-proof pressure gauge 5 demonstrations this moment the 3rd water pump 4 top hole pressures are lower than main pipe line tensimeter 10 pressure.
(2) motor-driven control valve 9 of adjusting the 3rd water pump 4 cuts out gradually, and the top hole pressure that the 3rd water pump 4 shock-proof pressure gauges 5 are shown transfers to 1.7MPa, shut-down operation.
(3) open the outlet electrically operated valve 7 of the 3rd water pump 4.
After the electrically operated valve 7 of (4) the 3rd water pumps 4 is opened, open gradually the motor-driven control valve 9 of the second water pump 3, close simultaneously the motor-driven control valve 9 of the 3rd water pump 4, this operation is slowly carried out, note observing pressure, the fluctuations in discharge of main pipe line tensimeter 10, along with main pipe line pressure, fluctuations in discharge, control main pipe line pressure 1.6 MPa≤P≤1.7 MPa, adjust in right amount the motor-driven control valve 9 of the second water pump 3 and the 3rd water pump 4.Be adjusted to motor-driven control valve 9 Close Alls of the 3rd water pump 4, motor-driven control valve 9 appropriateness of the second water pump 3 are opened, and stop to regulate.
(5) after adjusting is finished, close the outlet electrically operated valve 7 of the second water pump 3, stop the second water pump 3, close motor-driven control valve 9 operations and finish.
In whole working specification, the fluctuation of system's main pipe line pressure is fluctuateed between 16.3MPa-17.3 MPa, and fluctuation range can be controlled at 10%.System operation is reliable and stable.Stopping between any two in three pumps can be by that analogy.
Operational instances 2: present the first water pump 2,3 operations of the second water pump, the 3rd water pump 4 is for subsequent use, this moment system pressure 1.7 MPa, at this moment need system's main pipe line pressure is carried out step-down, be down to 1.6 MPa, but can not termination of pumping, can proceed as follows: slowly open the motor-driven control valve 9 of the first water pump 2 of operation or the motor-driven control valve 9 of the second water pump 3, observe main pipe line tensimeter 10 and be down to 1.6 MPa, stop the operation of water pump motor-driven control valve 9, system pressure regulating finishes.This kind voltage regulating mode is convenient, fast, stable, has avoided tradition to utilize outlet valve to regulate the phenomenon that causes pump discharge to build the pressure.
Operational instances 3: present the first water pump 2,3 operations of the second water pump, 4 maintenance of the 3rd water pump, overhaul the complete test run of carrying out, can proceed as follows: confirm that the 3rd water pump 4 outlet electrically operated valves 7 are in closing condition, all open the 3rd water pump 4 motor-driven control valves 9, press and open the pump button, confirm repair quality, stop the 3rd water pump 4 after the affirmation, close motor-driven control valve 9, avoided defective the causing in the pump testing process of repair quality that system is produced detrimentally affect.
Claims (2)
1. the protector of a circulation water of blast furnace; it is characterized in that: it is by shock-proof pressure gauge (5); motor-driven control valve (8); bypass duct (11) forms; shock-proof pressure gauge (5) and motor-driven control valve (9) are a plurality of; the quantity of the water supply pump of their quantity and circulation water of blast furnace is complementary; shock-proof pressure gauge (5) is installed on the pipeline of water supply pump water outlet; one end of motor-driven control valve (9) is connected on the pipeline between pump outlet and the various by-pass valve control by bypass duct (11), and the other end is connected to suction well (1) by bypass duct (11).
2. the protector of circulation water of blast furnace according to claim 1, it is characterized in that: described motor-driven control valve (9) is hand sluice valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265513 CN202730151U (en) | 2012-06-07 | 2012-06-07 | Blast furnace circulating water protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265513 CN202730151U (en) | 2012-06-07 | 2012-06-07 | Blast furnace circulating water protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202730151U true CN202730151U (en) | 2013-02-13 |
Family
ID=47655868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220265513 Expired - Lifetime CN202730151U (en) | 2012-06-07 | 2012-06-07 | Blast furnace circulating water protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202730151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681793A (en) * | 2021-08-23 | 2021-11-23 | 格鼎机电有限公司 | Hydraulic module for filtering and regulating pressure of water supply and return of mold cooling |
-
2012
- 2012-06-07 CN CN 201220265513 patent/CN202730151U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681793A (en) * | 2021-08-23 | 2021-11-23 | 格鼎机电有限公司 | Hydraulic module for filtering and regulating pressure of water supply and return of mold cooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 063016 Hebei province Tangshan City Road North Binhe Road, No. 9 Patentee after: River steel Limited by Share Ltd Tangshan branch Address before: 063016 Hebei province Tangshan City Road North Binhe Road, No. 9 Patentee before: Hebei Steel Co., Ltd., Tangshan Branch |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |