CN216112470U - Heat preservation device for uniform pressure relief valve of blast furnace - Google Patents
Heat preservation device for uniform pressure relief valve of blast furnace Download PDFInfo
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- CN216112470U CN216112470U CN202121577559.2U CN202121577559U CN216112470U CN 216112470 U CN216112470 U CN 216112470U CN 202121577559 U CN202121577559 U CN 202121577559U CN 216112470 U CN216112470 U CN 216112470U
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- blast furnace
- heat preservation
- electric heating
- belt
- preservation device
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- 238000004321 preservation Methods 0.000 title claims abstract description 46
- 238000007599 discharging Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 238000005485 electric heating Methods 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 241000270295 Serpentes Species 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of blast furnace pressure equalizing and discharging valves, in particular to a heat preservation device for a blast furnace pressure equalizing and discharging valve. Comprises an electric heating belt, a steel belt, a fixing buckle and a connecting component; the electric heating belt is laid on the steel belt in a snake shape and is detachably fixed on the steel belt through a fixing buckle; the steel band winding is on the outer wall of the equal pressure relief valve of blast furnace, and both ends are connected in order can dismantle the mode through coupling assembling, and then fix on the outer wall of the equal pressure relief valve of blast furnace. The normal operation of the blast furnace pressure equalizing and discharging valve in the environment of 20 ℃ below zero is ensured, the cost is low, the energy is saved, the labor intensity of operating personnel is reduced, and the stable and smooth operation of the blast furnace is ensured.
Description
Technical Field
The utility model relates to the technical field of blast furnace pressure equalizing and discharging valves, in particular to a heat preservation device for a blast furnace pressure equalizing and discharging valve.
Background
The blast furnace pressure equalizing and releasing valve is an important charging device for blast furnace production and plays a role in balancing pressure difference between a discharging tank and a furnace and between the discharging tank and a charging tank. If the pressure equalizing valve is not tightly sealed, the pressure of the discharging tank is easily not completely released, the feeding tank is communicated with the atmosphere, the pressure of the feeding and discharging tank is uneven, the upper sealing valve cannot be opened, and the material in the feeding tank cannot be loaded into the discharging tank; if the pressure relief valve is not sealed tightly, the charging tank is easily not charged and pressed upwards, the pressure in the charging tank and the pressure in the furnace are uneven, the lower sealing valve cannot be opened, and the material in the charging tank cannot be distributed into the furnace.
Because the temperature is lower in winter in the north, the uniform pressure relief valve is easy to cause poor sealing caused by ice accumulation of the valve seat and the valve plate, and the normal production of the blast furnace is influenced. In order to avoid the problems, a method of winding a heat-preservation steam rubber pipe on a pressure equalizing and discharging valve and wrapping heat-preservation cotton outside the pressure equalizing and discharging valve is adopted in the past, but recent practices prove that the method is not suitable for the production process requirements of a blast furnace, accumulated water inside the heat-preservation rubber pipe is often frozen and blocked due to large pressure fluctuation of heat-preservation steam to the furnace top, if the accumulated water is not timely found, even the pressure equalizing and discharging valve is easily sealed badly due to heat preservation failure, and meanwhile, when the frozen and blocked heat-preservation rubber pipe is processed, the external heat-preservation cotton needs to be detached, the heat-preservation cotton is recovered after a new heat-preservation rubber pipe is replaced, the high-altitude temperature in winter is lower, the operation time is longer, the operation difficulty is higher, and heavy operation burden is brought to operating personnel.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a heat preservation device for a pressure equalizing and discharging valve of a blast furnace. The normal operation of the blast furnace pressure equalizing and discharging valve in the environment of 20 ℃ below zero is ensured, the cost is low, the energy is saved, the labor intensity of operating personnel is reduced, and the stable and smooth operation of the blast furnace is ensured.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a heat preservation device for a blast furnace pressure equalizing and discharging valve comprises an electric heating belt, a steel belt, a fixing buckle and a connecting assembly; the electric heating belt is laid on the steel belt in a snake shape and is detachably fixed on the steel belt through a fixing buckle; the steel band winding is on the outer wall of the equal pressure relief valve of blast furnace, and both ends are connected in order can dismantle the mode through coupling assembling, and then fix on the outer wall of the equal pressure relief valve of blast furnace.
The electric heating belt is laid on the steel belt in a sine curve shape.
The fixing buckle is provided with a groove matched with the electric heating belt, the electric heating belt is placed in the groove, and the fixing buckle is fixed on the steel belt through a bolt.
The connecting assembly comprises a left connecting lug, a right connecting lug and a connecting block; the connecting block is arranged on the right connecting lug and can be adjusted in position forwards and backwards, and the connecting block is connected with the left connecting lug through a bolt.
The right connecting lug is provided with a strip hole, the connecting block is provided with a stud, the stud penetrates through the strip hole, the position of the stud is adjusted along the strip hole, and the stud is fixed through a nut after the position of the stud is adjusted.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model ensures that the pressure equalizing and discharging valve of the blast furnace normally operates in the environment of 20 ℃ below zero, changes the heat preservation mode and replaces steam heat preservation with electric heat preservation. Compared with steam heat preservation, the electric heat preservation has the following advantages: firstly, the material is light and convenient, and less personnel are needed for operation; secondly, the connection is convenient, and the existing power supply on the furnace top can be utilized; thirdly, the heat preservation effect is stable, and the problem of pressure fluctuation in the steam heat preservation process is solved; fourthly, the field is clean and tidy, and the problem of the ice skate due to the heat preservation by using steam can be avoided; fifthly, the manufacturing cost is low; sixthly, energy is saved.
The utility model adopts a sine curve wiring mode to increase the wiring density of the electric heating belt, and simultaneously fixes the electric heating belt on the steel belt to increase the radiation heat of the electric heating belt.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view taken along line A of FIG. 1;
fig. 3 is a schematic view of the structure of the right engaging lug and the connecting block of the present invention.
Fig. 4 is a schematic view of the working state of the present invention.
In the figure: 1-electric heating belt, 2-steel belt, 3-fixing buckle, 5-blast furnace pressure equalizing and discharging valve, 31-groove, 41-left connecting lug, 42-right connecting lug, 43-connecting block, 44-strip hole and 45-stud.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
example (b):
as shown in figures 1-4, the heat preservation device for the uniform pressure relief valve of the blast furnace comprises an electric heating belt 1, a steel belt 2, a fixing buckle 3 and a connecting assembly.
The electric heating belt 1 is an existing product, the model of the electric heating belt 1 is RDPZ (Q) -J3-30, and each valve uses 10-20 meters of the electric heating belt. The steel strip 2 is an aluminum strip with the specification of 1mm multiplied by 1000mm multiplied by 2000 mm. The electric heating belt 1 is laid on the steel belt 2 in a sine curve shape and is fixed through the fixing buckle 3. The fixing buckle 3 is provided with a groove 31 matched with the electric heating belt 1, the electric heating belt 1 is placed in the groove 31, and the fixing buckle 3 is fixed on the steel belt 2 through bolts.
The connecting assembly comprises a left connecting lug 41, a right connecting lug 42 and a connecting block 43. The right connecting lug 42 is provided with a long hole 44, the connecting block 43 is provided with a stud 45, the stud 45 penetrates through the long hole 44, the position is adjusted along the long hole 44, and the stud is fixed through a nut after the position is adjusted. The connecting block 43 and the left connecting lug 41 are provided with corresponding bolt holes, and the connecting block 43 is connected with the left connecting lug 41 through bolts. The connecting block 43 is arranged on the right connecting lug 42, and the position can be adjusted forwards and backwards so as to adapt to the blast furnace pressure equalizing and discharging valve 5 with different outer diameters.
The winding of steel band 2 is on the outer wall of the equal pressure relief valve 5 of blast furnace, and both ends are connected in order can dismantle the mode through coupling assembling, and then fix on the outer wall of the equal pressure relief valve 5 of blast furnace.
The utility model reduces the heat preservation cost of the blast furnace uniform pressure relief valve 5, the original heat preservation adopts a polytetrafluoroethylene metal hose as a lining, the price is 1560 yuan/10 meters, the heat preservation of a single uniform pressure relief valve needs about 100 meters, the metal hose is repeatedly frozen and cracked due to low heat preservation steam pressure of the blast furnace, about 300 meters (30) are consumed in one winter, and the material cost is 1560 multiplied by 30 which is 46800 yuan; after the electric heat preservation is changed, the electric heat preservation model is RDPZ (Q) -J3-30, the price is 26.6 yuan/m, a power supply is arranged beside the machine, each valve uses 15 meters of electric heat preservation, 6 valves are totally used, 90 meters are needed for single heat preservation, the specification of an aluminum plate is 1mm multiplied by 1000mm multiplied by 2000mm, 6 valves are needed, the density is 2.7 multiplied by 1000 kg/cubic meter, each kg of the aluminum plate is 14.9 yuan, and the material cost is that the cost of the electric heat preservation 26.6 multiplied by 90-2394 yuan aluminum plate is 0.001 multiplied by 1 multiplied by 2 multiplied by 6 multiplied by 2.7 multiplied by 1000 multiplied by 14.9-483 yuan. The total cost is 2394+ 483-2877 yuan. Due to the adoption of corrosion-resistant materials, the service life is estimated to be two years, and the annual cost is 2877/2-1439 yuan. The material cost is saved by 46800-1439-45361 yuan each year.
The utility model saves energy, the original heat preservation adopts steam for heat supply, the top of the blast furnace is divided into two paths, one path is used for the heat preservation of a pressure equalizing valve and the heat preservation of upper dense soft connection, the other path is used for the heat preservation of a bleeding valve, the steam flow per hour is 240 cubic meters, the electric heat preservation is changed into the electric heat preservation according to the calculation of saving the steam flow per hour by 120 cubic meters, the steam pressure is 0.33Mpa, and the density is 1.85Kg/m3The daily steam cost is 120 × 1.85/1000 × 2.72 × 92 × 24 ═ 1333 yuan. The electric heat preservation adopts a 220V power supply, each meter of 30 watts, 90 meters of electricity is preserved for 1 day, the electricity consumption is 90 multiplied by 30 multiplied by 24 which is 64.8 degrees, and each degree of electricity of an iron works is 0.53 yuan. If the heat preservation is carried out for 4 months and 120 days, the energy saving cost is (1333-64.8 multiplied by 0.53). times.120 is 155880 yuan.
The utility model ensures that the blast furnace pressure equalizing and discharging valve normally operates in the environment of 20 ℃ below zero, saves material cost, energy cost and labor cost, avoids accidents and ensures the stable and smooth operation of the blast furnace.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (5)
1. The utility model provides a blast furnace is pressure valve heat preservation device all arranges which characterized in that: comprises an electric heating belt, a steel belt, a fixing buckle and a connecting component; the electric heating belt is laid on the steel belt in a snake shape and is detachably fixed on the steel belt through a fixing buckle; the steel band winding is on the outer wall of the equal pressure relief valve of blast furnace, and both ends are connected in order can dismantle the mode through coupling assembling, and then fix on the outer wall of the equal pressure relief valve of blast furnace.
2. The blast furnace pressure equalizing and discharging valve heat preservation device according to claim 1, characterized in that: the electric heating belt is laid on the steel belt in a sine curve shape.
3. The blast furnace pressure equalizing and discharging valve heat preservation device according to claim 1, characterized in that: the fixing buckle is provided with a groove matched with the electric heating belt, the electric heating belt is placed in the groove, and the fixing buckle is fixed on the steel belt through a bolt.
4. The blast furnace pressure equalizing and discharging valve heat preservation device according to claim 1, characterized in that: the connecting assembly comprises a left connecting lug, a right connecting lug and a connecting block; the connecting block is arranged on the right connecting lug and can be adjusted in position forwards and backwards, and the connecting block is connected with the left connecting lug through a bolt.
5. The blast furnace pressure equalizing and discharging valve heat preservation device according to claim 4, characterized in that: the right connecting lug is provided with a strip hole, the connecting block is provided with a stud, the stud penetrates through the strip hole, the position of the stud is adjusted along the strip hole, and the stud is fixed through a nut after the position of the stud is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121577559.2U CN216112470U (en) | 2021-07-12 | 2021-07-12 | Heat preservation device for uniform pressure relief valve of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121577559.2U CN216112470U (en) | 2021-07-12 | 2021-07-12 | Heat preservation device for uniform pressure relief valve of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216112470U true CN216112470U (en) | 2022-03-22 |
Family
ID=80721997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121577559.2U Active CN216112470U (en) | 2021-07-12 | 2021-07-12 | Heat preservation device for uniform pressure relief valve of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216112470U (en) |
-
2021
- 2021-07-12 CN CN202121577559.2U patent/CN216112470U/en active Active
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