CN211386325U - Heating device for intermediate blank - Google Patents
Heating device for intermediate blank Download PDFInfo
- Publication number
- CN211386325U CN211386325U CN201921502737.8U CN201921502737U CN211386325U CN 211386325 U CN211386325 U CN 211386325U CN 201921502737 U CN201921502737 U CN 201921502737U CN 211386325 U CN211386325 U CN 211386325U
- Authority
- CN
- China
- Prior art keywords
- roll table
- middle roll
- opening
- heating device
- 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.)
- Active
Links
Images
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The utility model relates to a heating field, in particular to be used for middle base heating device, including middle roll table and nozzle assembly, have more than two on the middle roll table along a direction and the transmission roller of mutual parallel arrangement and the driving motor who is connected with transmission roller one end one-to-one, middle roll table both sides set up the backplate respectively, the backplate is equipped with the through-hole in the middle of being located roll table back end part, the through-hole can hold inside the nozzle assembly extends middle roll table by middle roll table outside, nozzle assembly is configured to carry out the heating operation to the steel billet that lies in on middle roll table to solve the problem that the temperature of steel billet limit portion drops in middle roll table transmission back end in-process, and then promote the quality and the output of black skin book.
Description
Technical Field
The utility model relates to a heating field, in particular to be used for middle base heating device.
Background
In the billet rolling process, rolling is required to be performed in a plurality of steps. However, the temperature control of the billet in the rolling process reaches the bottleneck period at present, and cannot be further improved, so the temperature increase in the billet rolling process becomes an unbearable matter.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a be used for middle base heating device to solve the problem of middle base limit portion temperature drop in middle roller way transmission process, and then promote the quality that the black skin was rolled up.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a be used for middle base heating device, includes middle roll table and nozzle subassembly, have more than two on the middle roll table along a direction and mutual parallel arrangement's transmission roller and with the driving motor that transmission roller one end one-to-one is connected, middle roll table both sides set up the backplate respectively, the backplate is equipped with the through-hole in the middle of being located roll table back end part, the through-hole can hold inside the nozzle subassembly extends middle roll table by middle roll table outside, the nozzle subassembly is configured to carry out heating operation to the rigid base that lies in on the middle roll table.
Furthermore, the middle part of the conveying roller is provided with a groove which is formed by sinking downwards, and the groove width of the groove is matched with the width of the steel billet.
Further, the groove depth of the groove is 100 mm.
Further, the aperture of the through hole is 60 mm.
Furthermore, the number of the burner assemblies is 36, and the burner assemblies are uniformly distributed on the guard plates on the two sides.
Furthermore, the burner assembly comprises a mixing section and a gas transmission section which are connected with each other, a first opening and a second opening are arranged on the mixing section, the position of the first opening is farther away from the gas transmission section than the position of the second opening, the first opening is connected with a natural gas pipeline, the second opening is connected with an air pipeline, and one end, far away from the mixing section, of the gas transmission section extends into the middle roller way.
Further, the caliber of the gas transmission section is 50mm, the inner diameter of the mixing section is 40mm, and the power of the burner assembly is 40 KW.
Furthermore, a flowmeter, a manual valve and a steam purging pipe are mounted on the natural gas pipeline.
Furthermore, a gas alarm instrument is further arranged on each valve node of the natural gas pipeline, the gas alarm instrument is in communication connection with a remote video monitoring device, and the gas alarm instrument is electrically connected with the prompting bell.
Furthermore, the air pipeline is provided with a combustion fan, a silencer, a pressure gauge valve and a manual butterfly valve.
The beneficial effects of the utility model reside in that: through the backplate and the backplate in middle roll table both sides be equipped with the through-hole on being located middle roll table back end part, the through-hole can hold inside the nozzle subassembly extends middle roll table by middle roll table outside, the nozzle subassembly is configured to carry out heating operation to the steel billet that lies in on the middle roll table to solve the problem that the steel billet temperature drops at middle roll table transmission back end in-process, and then promote whole black skin and roll up the quality.
Drawings
Fig. 1 is a schematic structural view of an intermediate blank heating device according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a side view of a burner assembly for an intermediate billet heating apparatus according to the present invention;
fig. 4 is a top view of a burner assembly for an intermediate billet heating apparatus according to the present invention;
fig. 5 is a schematic view of a burner assembly for an intermediate billet heating apparatus according to the present invention;
FIG. 6 shows the actual production situation of the S30400 steel grade;
description of reference numerals:
1. a middle roller way; 2. a burner assembly; 11. a transfer roller; 12. a drive motor; 13. a guard plate; 21. a mixing section; 22. a gas transmission section; 211. a first opening; 212. a second opening.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Please refer to fig. 1-5, the utility model provides a pair of a be used for middle base heating device, including middle roll table and nozzle assembly, have more than two on the middle roll table along a direction and mutual parallel arrangement's transmission roller and with the driving motor that transmission roller one end one-to-one is connected, middle roll table both sides set up the backplate respectively, the backplate is equipped with the through-hole in the middle of being located in the middle of the roll table back end part, the through-hole can hold inside the nozzle assembly extends middle roll table by middle roll table outside, nozzle assembly is configured to carry out heating operation to the steel billet that lies in on middle roll table.
From the above description, the beneficial effects of the present invention are: through the guard plates on two sides of the middle roller way, the guard plates are arranged on the rear section part of the middle roller way, the through holes can accommodate the burner assemblies, the burner assemblies extend into the middle roller way from the outside of the middle roller way, the burner assemblies are configured to heat steel billets on the middle roller way, the problem of temperature drop of the edge of the steel billets during the process of conveying the rear section by the middle roller way is solved, and the processing technology quality of the whole steel billets is improved.
Furthermore, the middle part of the conveying roller is provided with a groove which is formed by sinking downwards, and the groove width of the groove is matched with the width of the steel billet.
As can be seen from the above description, in the actual production process, the groove is designed to be an annular groove formed by sinking the center of the transmission roller, so that the transmission roller can play both the transmission function and the limiting function.
Further, the groove depth of the groove is 100 mm.
From the above description, it can be known that there is a vertical run-out in the billet transmission process, and it is obtained through many experiments that: the groove depth of the groove is designed to be 100mm, so that the jumping height of the steel billet can be met, and the steel billet cannot jump out of the groove.
Further, the aperture of the through hole is 60 mm.
Furthermore, the number of the burner assemblies is 36, and the burner assemblies are uniformly distributed on the guard plates on the two sides.
As can be seen from the above description, the burner assemblies are arranged on the guard plate at intervals in a straight line, and the distance between two adjacent burner assemblies ranges from 1800mm to 1860 mm.
Furthermore, the burner assembly comprises a mixing section and a gas transmission section which are connected with each other, a first opening and a second opening are arranged on the mixing section, the position of the first opening is farther away from the gas transmission section than the position of the second opening, the first opening is connected with a natural gas pipeline, the second opening is connected with an air pipeline, and one end, far away from the mixing section, of the gas transmission section extends into the middle roller way.
According to the description, the natural gas is introduced into the first opening, the air is introduced into the second opening, the natural gas and the air are uniformly and fully mixed in the mixing section, and then the natural gas and the air are ignited and sprayed into the middle roller way through the gas transmission section to heat the side edge of the billet so as to compensate the influence of temperature drop on the rear-end process. Wherein the aperture of the first opening is 15mm, the aperture of the second opening is 40mm, the center distance between the first opening and the second opening is 80mm, and the shortest distance between the center of the second opening and the gas transmission section is 61 mm.
Further, the caliber of the gas transmission section is 50mm, the inner diameter of the mixing section is 40mm, and the power of the burner assembly is 40 KW.
Furthermore, a flowmeter, a manual valve and a steam purging pipe are mounted on the natural gas pipeline.
Furthermore, a gas alarm instrument is further arranged on each valve node of the natural gas pipeline, the gas alarm instrument is in communication connection with a remote video monitoring device, and the gas alarm instrument is electrically connected with the prompting bell.
Furthermore, the air pipeline is provided with a combustion fan, a silencer, a pressure gauge valve and a manual butterfly valve.
Embodiment one of the utility model
The utility model provides a pair of be used for middle base heating device, including middle roll table 1 and nozzle assembly 2, have more than two on the middle roll table 1 along a direction and mutual parallel arrangement's transmission roller 11 and with the driving motor 12 that transmission roller one end one-to-one is connected, middle roll table 1 both sides set up backplate 13 respectively, the backplate is equipped with the through-hole in the middle of being located roll table back end part, the through-hole can hold nozzle assembly 2 is inside by middle roll table outside extension middle roll table, nozzle assembly 2 is configured to carry out the heating operation to the steel billet that lies in on the middle roll table.
The middle part of the conveying roller 11 is provided with a groove which is formed by sinking downwards, and the groove width of the groove is matched with the width of the steel billet. In the actual production process, the groove is designed into an annular groove formed by sinking the center of the transmission roller, so that the transmission roller has the transmission function and also has the limiting function.
The groove depth of the groove is 100 mm. The steel billet has bounce in the vertical direction in the transmission process, and is obtained through a plurality of tests: the groove depth of the groove is designed to be 100mm, so that the jumping height of the steel billet can be met, and the steel billet cannot jump out of the groove.
The aperture of the through hole is 60 mm. The number of the burner assemblies 2 is 36, and the burner assemblies are uniformly distributed on the guard plates on the two sides. The burner components are arranged on the guard plate at intervals in a straight line, and the distance between every two adjacent burner components ranges from 1800mm to 1860 mm.
The burner assembly 2 comprises a mixing section 21 and a gas transmission section 22 which are connected with each other, a first opening 211 and a second opening 212 are arranged on the mixing section 21, the position of the first opening 211 is farther away from the gas transmission section than the position of the second opening 212, the first opening 211 is connected with a natural gas pipeline, the second opening 212 is connected with an air pipeline, and one end, far away from the mixing section, of the gas transmission section extends into the middle roller way. And natural gas is introduced into the first opening, air is introduced into the second opening, the natural gas and the air are uniformly and fully mixed in the mixing section, and then the natural gas and the air are ignited and sprayed into the middle roller way through the gas transmission section to heat the side edge of the billet so as to compensate the influence of temperature drop on the rear-end process. Wherein the aperture of the first opening is 15mm, the aperture of the second opening is 40mm, the center distance between the first opening and the second opening is 80mm, and the shortest distance between the center of the second opening and the gas transmission section is 61 mm.
The caliber of the gas transmission section is 50mm, the inner diameter of the mixing section is 40mm, the power of the burner assembly is 40KW, the adjusting ratio is 10: 1, the minimum power is 4KW, the maximum dosage per hour is 4m3, and the length is measured according to the site position. As shown in FIG. 5, the flame length is 350mm, and L1-2 is a flame nozzle, which is calculated from L1-2, and prevents fire from escaping.
And the natural gas pipeline is provided with a flowmeter, a manual valve and a steam purging pipe. Wherein the manual valve adopts a 304 stainless steel ball valve. And each valve node of the natural gas pipeline is also provided with a gas alarm, the gas alarm is in communication connection with a remote video monitoring device, and the gas alarm is electrically connected with the prompting bell. The gas alarm is configured on site, the video monitoring equipment is generally configured in a monitoring room, relevant parameters on the gas alarm are transmitted back to the video monitoring equipment, and monitoring personnel in the monitoring room can know the conditions of all valves of the natural gas pipeline in time.
And the air pipeline is provided with a combustion-supporting fan, a silencer, a pressure gauge valve and a manual butterfly valve. Wherein, the quantity of combustion-supporting fan is two, and one uses another for subsequent use. The relevant parameters are as follows: air volume: 2500m3/h, wind pressure: 5000Pa, rotating speed: 2900 r/min. A 9-19 national standard combustion fan is adopted, and the on-way pressure loss is considered, so the power is selected slightly; the number of the silencers is two, and the silencers are respectively arranged at the air inlet. The manual butterfly valve is installed on the spare fan pipeline that is incorporated into the power networks for switch uses, will add a hot-blast diffusion pipe simultaneously in operation side or transmission side, and the diffusion pipe adds a manual butterfly valve.
In addition, the air pipeline is arranged to be diffused, so that the stable air pressure of unilateral heating is ensured. The inlet end and the tail end of the natural gas pipeline are both provided with a blowing and diffusing pipe, and steam blowing is used for blowing. The system is configured to manually adjust the calibration power, and because the burner can be ignited at the maximum power, the slow-opening solenoid valve is selected for the gas solenoid valve; the burner controller has two local and remote operation modes which can be switched by setting.
The utility model provides a be used for middle base heating device through this scheme, the economic effect who reaches as follows:
use of the charged intermediate billet heating apparatus: in the hot continuous rolling production, the temperature drop in the strip steel rolling process is important. The improvement of the FET is beneficial to improving the surface quality of products, the roll surface quality of a roll, the load of a finishing mill group and the control of a finish rolling steel type, improves the rolling stability and provides possibility for further breaking through limit specifications.
As shown in fig. 6, rolling data from a month immediately before was counted, and from the actual rolling data, after the intermediate billet edge heater was put into full use for 8 months and 7 days, the FET temperature increased significantly and the finish rolling load decreased significantly. Specific data are shown in table 1 below:
TABLE 1
According to the embodiment, in the practical use, the temperature of the steel billet is increased, the productivity is improved, and the cost is reduced.
The calculation formula is as follows:
newly adding gas cost:
36 burners 4m33 yuan/m/h3432 yuan/hour;
432 yuan/h/600 ton/h 0.72 yuan/ton;
according to the actual measurement data of S30400 steel grade; the temperature can be increased by (13-20) DEG C, and the motor load can be reduced by (130-300) A;
the current of each main motor can be saved by reducing (130-300) A: 1.732 x (130/300) x 1650 x 80/3600/1000 approximately equal to (14-19) degrees per piece of steel;
average electric charge: (14+19)/2 degree × 8 rack × 20 ton/count × 0.6 yuan/degree ═ 1.584 yuan/ton;
consumption of the roller: according to the current count change calculation, the whole temperature is increased by 16.5 ℃, and the service life of the roller can be increased by 3-5 pieces of steel each time. The production capacity of the last year is 379 ten thousand tons of steel, and the roll changing count can be saved by 790.
Capacity is improved: the roller is changed for 6 times per shift averagely, each time is increased by 60 tons, the output per shift is increased by 360 tons, the daily output is 720 tons, and the average output of three furnaces is 12300 tons at present and is increased to 13000 tons. The monthly production increased by about 18800 tons.
Roll wear: calculated as 1.268kg/t in 2018 (3790000 ton/year 1.268 kg/ton) ÷ (3790000 ton/year +18800 ton/month 10 months) ═ 1.208 kg/ton. The roller consumption is reduced by 0.068 kg/ton, and the cost of a ton of steel roller is reduced by 1.156 yuan/ton.
To sum up, the utility model provides a pair of be used for middle base heating device is equipped with the through-hole on the backplate and the backplate through roll table both sides in the middle of being located middle roll table back end part, the through-hole can hold inside the nozzle subassembly extends middle roll table by middle roll table outside, the nozzle subassembly is configured to carry out the heating operation to the steel billet that lies in on middle roll table to solve the problem of the temperature drop of middle roll table transmission back end in-process steel billet limit portion, and then promote quality, output and the reduction roller that the black skin was rolled up and consume.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a be used for middle base heating device, its characterized in that, includes middle roll table and nozzle subassembly, have more than two on the middle roll table along a direction and mutual parallel arrangement's transmission roller and with the driving motor that transmission roller one end one-to-one is connected, middle roll table both sides set up the backplate respectively, the backplate is equipped with the through-hole on being located middle roll table back end part, the through-hole can hold inside the nozzle subassembly extends middle roll table by middle roll table outside, the nozzle subassembly is configured to carry out heating operation to the steel billet that lies in on middle roll table.
2. The heating apparatus for the intermediate slab as set forth in claim 1, wherein said transfer rolls have a groove formed in a central portion thereof to be depressed downward, and a groove width of said groove is adapted to a width of the steel slab.
3. A heating apparatus for an intermediate blank as set forth in claim 2, wherein said recess has a groove depth of 100 mm.
4. The heating device for an intermediate blank as set forth in claim 1, wherein the aperture of said through hole is 60 mm.
5. The heating device for the intermediate blank as claimed in claim 1, wherein the number of the burner assemblies is 36, and the burner assemblies are uniformly distributed on the guard plates on both sides.
6. The intermediate billet heating device according to claim 1, wherein the burner assembly comprises a mixing section and a gas transmission section which are connected with each other, the mixing section is provided with a first opening and a second opening, the first opening is farther away from the gas transmission section than the second opening, the first opening is connected with a natural gas pipeline, the second opening is connected with an air pipeline, and one end of the gas transmission section, which is far away from the mixing section, extends into the intermediate roller way.
7. The heating device for the intermediate blank according to claim 6, wherein the caliber of the gas transmission section is 50mm, the inner diameter of the mixing section is 40mm, and the power of the burner assembly is 40 KW.
8. The heating apparatus for intermediate billets as claimed in claim 6, characterised in that said natural gas line is equipped with a flow meter, a manual valve and a steam purge pipe.
9. The heating device for the intermediate blank as claimed in claim 6, wherein a gas alarm is further provided on each valve node of the natural gas pipeline, the gas alarm is in communication connection with a video monitoring device located at a remote end, and the gas alarm is electrically connected with a prompting bell.
10. The apparatus as claimed in claim 6, wherein a combustion fan, a silencer, a pressure gauge valve, and a manual butterfly valve are installed on the air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921502737.8U CN211386325U (en) | 2019-09-10 | 2019-09-10 | Heating device for intermediate blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921502737.8U CN211386325U (en) | 2019-09-10 | 2019-09-10 | Heating device for intermediate blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211386325U true CN211386325U (en) | 2020-09-01 |
Family
ID=72228538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921502737.8U Active CN211386325U (en) | 2019-09-10 | 2019-09-10 | Heating device for intermediate blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211386325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560493A (en) * | 2019-09-10 | 2019-12-13 | 福建鼎信科技有限公司 | Heating device for intermediate blank |
-
2019
- 2019-09-10 CN CN201921502737.8U patent/CN211386325U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560493A (en) * | 2019-09-10 | 2019-12-13 | 福建鼎信科技有限公司 | Heating device for intermediate blank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104017981B (en) | A kind of continuous casting steel billet heating process of heat accumulating type roller bottom heating furnace | |
| CN211386325U (en) | Heating device for intermediate blank | |
| CN102560081A (en) | Heating furnace energy-saving control method based on strip steel mechanical property forecasting model | |
| CN100493750C (en) | Method for ensuring the uniform temperature of the full-length of the hot fine rolling band steel | |
| CN112710161A (en) | Pure oxygen combustion control system and control method of steel rolling heating furnace | |
| CN2815536Y (en) | On-line flame concurrent heating device for medium-thin sheet contnuous casting billet direct rolling | |
| CN208390657U (en) | A kind of process equipment improving rebar surface corrosion resistance | |
| CN110560493A (en) | Heating device for intermediate blank | |
| CN110157872A (en) | A kind of heating means reducing recuperative heater slab burn out rate | |
| CN102944016A (en) | Pulverized coal burner of large-scale vertical reducing furnace | |
| CN104891831A (en) | Energy-saving environment-friendly active lime roasting shaft kiln | |
| CN105710131B (en) | A kind of method that Roll during Hot Strip Rolling coolant outlet water is axially distributed | |
| CN107502694A (en) | A kind of shaft furnace inlet duct and shaft furnace air inlet method | |
| CN201375992Y (en) | Cooling device | |
| CN104373953B (en) | A kind of intelligent combustion system using restriction orifice | |
| CN114472581B (en) | Preparation method of mechanical composite pipe seamless main pipe for acidic environment | |
| CN112575155B (en) | Process for controlling decarburization layer of steel billet | |
| CN210615031U (en) | Stick type open fire combustion device | |
| CN111589880B (en) | Control method for improving structure uniformity of on-line cooling process of medium-thickness wall seamless steel pipe | |
| CN209541411U (en) | A kind of Two-cuff Technique roller hearth type heating furnace | |
| CN110617716B (en) | Method for controlling production rhythm and furnace temperature of mixed steel heating on line | |
| CN207062314U (en) | A kind of shaft furnace inlet duct | |
| CN218820386U (en) | Oxygen-enriched combustion device for soaking section of stainless steel heating furnace | |
| CN219474250U (en) | Muffle furnace and combustion system thereof | |
| CN204714712U (en) | Energy-saving environment protection active lime roasting shaft kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |