CN220485741U - Blast furnace material tank pressure and material level detection device - Google Patents
Blast furnace material tank pressure and material level detection device Download PDFInfo
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- CN220485741U CN220485741U CN202322159494.5U CN202322159494U CN220485741U CN 220485741 U CN220485741 U CN 220485741U CN 202322159494 U CN202322159494 U CN 202322159494U CN 220485741 U CN220485741 U CN 220485741U
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- pressure
- level measuring
- pipe
- hole
- measuring cylinder
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- 239000000463 material Substances 0.000 title claims abstract description 134
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000010926 purge Methods 0.000 claims abstract description 76
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 25
- 238000010408 sweeping Methods 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 17
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000000428 dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to the technical field of metallurgical automation instrument control, in particular to a blast furnace tank pressure and material level detection device, wherein the lower end of a material level measuring cylinder is welded and connected to the top wall of a material tank body, a radar material level gauge is fixedly connected to the upper end of the material level measuring cylinder, a radar material level gauge antenna is arranged at the central position of the upper end inside the material level measuring cylinder, a purging hole is arranged on the side wall of the middle part of the material level measuring cylinder, a purging pipe is welded on the purging hole, a pressure taking hole is arranged on the side wall of the material level measuring cylinder, and a material tank pressure taking pipe is welded on the pressure taking hole.
Description
Technical Field
The utility model relates to the technical field of metallurgical automation instrument control, in particular to a blast furnace material tank pressure and material level detection device.
Background
In the blast furnace smelting process, the charging bucket is used as important equipment for blast furnace charging, and the accurate detection of the pressure and the material level in the charging bucket is particularly important. The pressure of the charging bucket is mainly detected to be equal to the internal pressure of the blast furnace when the charging bucket is in pressure equalizing, the pressure equalizing generally adopts blast furnace semi-clean gas, the gas contains a large amount of water vapor, the pressure returns to zero when the pressure is released, and the detection parameters directly control whether the upper sealing valve and the lower sealing valve of the charging bucket have the conditions of opening or closing. The material level of the charging bucket mainly detects whether the charging bucket is full of materials or not in the charging process, and whether the charging bucket is completely empty or not in the discharging process so as to determine the time for opening or closing the upper sealing valve and the lower sealing valve of the charging bucket, namely, the charging speed of the blast furnace is directly related. The measurement of charging bucket pressure conventionally adopts dirty gas to get the pressure equipment and adds the reverse purge unit of constant current, and dirty gas gets the pressure equipment and generally installs on the charging bucket jar body or the pressure equalizing pipeline independently, and charging bucket pressure transmitter is generally installed in the reverse purge unit switch board of constant current, and the reverse purge unit of constant current sweeps the flow and generally at 200NL/min, because the flow is too little can't overcome a large amount of dust that produce when the charging bucket is even and flow backward and get into dirty gas and get the pressure equipment and get the pressure pipe inside, make dust and the water vapor in the pressurized gas to become the dirt and bond in dirty gas and get the pressure pipe inside getting the pressure equipment and frequently block up and get the pressure pipe, cause charging bucket pressure measurement misalignment and influence the normal production of blast furnace. The radar level gauge for detecting the material level of the charging bucket is generally arranged on a special level measuring cylinder, in order to ensure that the inner wall of the measuring cylinder is not scaled, a path of back purge gas is generally arranged on the measuring cylinder, purge gas flow is concentrated and the purge gas flow is large, so that a small amount of dust suspended in the level measuring cylinder is driven by the gas flow to erode the pipe wall opposite to the purge port, the inner wall of the level measuring cylinder opposite to the purge port is thinned and even blown out due to erosion and abrasion after long-term purging, and the purging mode is improved.
Disclosure of Invention
The utility model aims to provide a blast furnace tank pressure and material level detection device, which solves the technical problems that the pressure of a charging tank is insufficient, the pressure taking pipe is easy to be blocked, the purging mode of a material level measuring cylinder is unreasonable, the inner wall of the material level measuring cylinder is easy to be eroded and worn, the daily maintenance workload is large, and the failure rate is high.
In order to solve the technical problems, the utility model provides a blast furnace charge tank pressure and material level detection device which comprises a radar material level gauge, a material level measuring cylinder and a material tank body, wherein the lower end of the material level measuring cylinder is welded and connected to the top wall of the material tank body, the material level measuring cylinder is communicated with the inside of the material tank body, the lower end of the material level measuring cylinder is flush with the inner wall of the top wall of the material tank body, the radar material level gauge is fixedly connected to the upper end of the material level measuring cylinder, the radar material level gauge comprises a radar material level gauge antenna, the radar material level gauge antenna is arranged at the central position of the upper end inside the material level measuring cylinder, a purging hole is arranged on the side wall of the middle part of the material level measuring cylinder, a purging pipe is welded on the purging hole, the purging pipe is arranged outside the material level measuring cylinder, one end of the purging pipe, which is far away from the purging hole, is connected with a nitrogen pipeline, and a valve is connected between the purging pipe and the nitrogen pipeline.
Further, the purge hole be equipped with a plurality ofly, a plurality of purge holes use the axis of material level measuring cylinder as central circumference equipartition, all weld on every purge hole and purge the pipe, the one end that every purge pipe kept away from purge hole all is connected with nitrogen gas pipeline, all is connected with the valve between nitrogen gas pipeline and the every purge pipe.
Further, the material level measuring cylinder lateral wall on be equipped with and get and press the hole, get and press the hole to establish in blowing the hole top, get to press the welding on the hole and have the material tank pressure to get and press the pipe, the material tank pressure is got and is pressed the pipe and is established in the material level measuring cylinder outside, the material tank pressure is got and is pressed the pipe and keep away from, is connected with and gets to press, blow the pipeline, gets to press, blow the pipeline and nitrogen gas pipeline intercommunication.
Further, the pressure taking and sweeping pipeline and the charging bucket pressure taking pipe are connected with a valve, the pressure taking and sweeping pipeline is provided with a pressure transmitter and a constant-current sweeping device, the pressure transmitter and the constant-current sweeping device are connected in series, and the pressure transmitter is close to the charging bucket pressure taking pipe.
Further, the included angle of the vertical surface between the axis of each purging hole and the axis of the material level measuring cylinder is 60 degrees, and each purging pipe is coaxial with each purging hole.
Further, the included angle of the vertical surface between the axis of each pressure taking hole and the axis of the material level measuring cylinder is 60 degrees, and the pressure taking holes and the material tank pressure taking pipes are coaxial.
Further, the upper end of the material level measuring cylinder is provided with a material level measuring cylinder flange, the lower end of the radar material level gauge is provided with a radar material level gauge flange, and the material level measuring cylinder flange is connected with the radar material level gauge flange through bolts and nuts.
Furthermore, the radar level gauge antenna is arranged at the center of the flange of the level measuring cylinder.
Further, the inner wall of the joint of the material level measuring cylinder and the purging pipe is smooth and has no bulge; the inner wall of the joint of the material level measuring cylinder and the pressure taking pipe of the charging bucket is smooth and has no bulge.
The beneficial effects of the utility model are as follows:
1. the technical problems that the material level measuring tube is concentrated by adopting one path of sweeping air flow, erosion and leakage of the tube wall of the material level measuring tube are easy to occur, and the sweeping air path is unreasonable are solved.
2. The problem of the bucket pressure dirty gas pressure equipment pipe inside frequently block up has been solved to the bucket pressure constant current sweep gas volume not enough, leads to the dust in the bucket to flow backward with the mud dirt that vapor in the pressurized gas formed to get into bucket pressure dirty gas pressure equipment pipe inside.
3. Through porous convection inclined purging, a positive pressure downward airflow column is formed, so that the purging and dust-proof effects are better.
4. Through the scheme that combines two into one with the dirty coal gas pressure taking device of charging bucket pressure and charging bucket material level measuring cylinder, more effectually promoted the sweeping ability of material level measuring cylinder, eliminated the charging bucket pressure and got the frequent jam problem of pressure hole.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. a radar level gauge; 2. a bolt; 3. a radar level gauge flange; 4. a material level measuring cylinder flange; 5. a purge tube; 6. a material level measuring cylinder; 7. a charging bucket body; 8. a charging bucket pressure taking pipe; 9. a pressure transmitter; 10. constant flow purging device; 11. a radar level gauge antenna; 12. a pressure taking hole; 13. a purge hole; 14. taking pressure and blowing a pipeline; 15. a nitrogen pipeline.
Detailed Description
As shown in fig. 1, the pressure and material level detection device for the blast furnace material tank comprises a radar material level gauge 1, a material level measuring cylinder 6 and a material tank body 7, wherein the lower end of the material level measuring cylinder 6 is welded and connected to the top wall of the material tank body 7, the material level measuring cylinder 6 is communicated with the inside of the material tank body 7, the lower end of the material level measuring cylinder 6 is flush with the inner wall of the top wall of the material tank body 7, the radar material level gauge 1 is fixedly connected to the upper end of the material level measuring cylinder 6, the radar material level gauge 1 comprises a radar material level gauge antenna 11, the radar material level gauge antenna 11 is arranged at the central position of the upper end inside the material level measuring cylinder 6, a purging hole 13 is formed in the side wall of the middle of the material level measuring cylinder 6, a purging pipe 5 is welded on the purging hole 13, the inner wall of the joint of the material level measuring cylinder 6 and the purging pipe 5 is smooth and has no protrusion, the purging pipe 5 is arranged on the outer side of the material level measuring cylinder 6, one end of the purging pipe 5 far away from the purging hole 13 is connected with a nitrogen pipeline 15, a valve is connected between the purging pipe 5 and the nitrogen pipeline 15, the purging holes 13 are provided with a plurality of the inner circumferences of the material level measuring cylinder 6, each purging pipe 13 is uniformly distributed by taking the axis of the material level measuring cylinder 6 as the central circumference, each purging hole is welded, and each purging pipe 13 is connected with each purging pipe 5 and each purging pipe is connected with each purging pipe 5 through 60, and each purging pipe is connected with each purging pipe through the straight line 15 through the straight line through each purging pipe through the straight line 15.
The material level measuring tube 6 is provided with a pressure taking hole 12 on the side wall, the pressure taking hole 12 is arranged above the blowing hole 13, a material tank pressure taking tube 8 is welded on the pressure taking hole 12, the material tank pressure taking tube 8 is arranged outside the material level measuring tube 6, the inner wall of the joint of the material level measuring tube 6 and the material tank pressure taking tube 8 is smooth and free of protrusions, the material tank pressure taking tube 8 is far away, one end of the pressure taking hole 12 is connected with a pressure taking and blowing pipeline 14, the pressure taking and blowing pipeline 14 is communicated with a nitrogen pipeline 15, a valve is connected between the pressure taking and blowing pipeline 14 and the material tank pressure taking tube 8, the pressure taking and blowing pipeline 14 is provided with a pressure transmitter 9 and a constant-current blowing device 10, the pressure transmitter 9 and the constant-current blowing device 10 are connected in series, the pressure transmitter 9 is close to the material tank pressure taking tube 8, a vertical face included angle between the axis of each pressure taking hole 12 and the axis of the material level measuring tube 6 is 60 degrees, and the pressure taking and blowing tube 12 are coaxial
The upper end of the material level measuring cylinder 6 is provided with a material level measuring cylinder flange 4, the lower end of the radar material level gauge 1 is provided with a radar material level gauge flange 3, the material level measuring cylinder flange 4 is connected with the radar material level gauge flange 3 through a bolt 2 and a nut, and a radar material level gauge antenna 11 is arranged at the center position of the material level measuring cylinder flange 4.
In the embodiment, four purge holes 13 are arranged, the distance between the four purge holes 13 and the material level measuring cylinder flange 4 is 150mm, and the pressure taking hole 12 is arranged at a position 100mm away from the lower part of the material level measuring cylinder flange 4.
When the constant-flow constant-pressure type material level measuring cylinder is used, instrument nitrogen is used for providing a constant-flow purging device 10 and four purging pipes 5 with continuous purging air sources of about 0.5Mpa respectively, the four purging pipes 5 are purged face to face, so that purging air flows can be prevented from directly corroding the inner wall of the material level measuring cylinder 6 opposite to the purging holes 13, balanced purging air flows can be enabled to be uniform and downward, and the material level measuring cylinder 6 can be always in a micro-positive pressure state in the process of equalizing pressure of a material tank due to large purging flow, so that dirt formed by dust in the material tank body 7 and water vapor in equalizing pressure gas can not flow back into the material level measuring cylinder 6. The constant-flow purging device 10 continuously purges nitrogen into the material level measuring cylinder 6 through the pressure taking and purging pipeline 14 at a constant flow, so that the purging capacity of the material level measuring cylinder 6 can be improved while the pressure taking and purging pipeline 14 is prevented from being blocked, and meanwhile, the pressure change in the material tank body 7 can be detected in real time through the pressure taking and purging pipeline 14 and the material tank pressure taking pipe 8 by the material tank pressure transmitter 9. According to the utility model, the charging bucket pressure dirty gas pressure-taking device and the charging bucket material level measuring cylinder are combined into a whole, so that the purging mode of the material level measuring cylinder is improved, the problem that one path of the material level measuring cylinder is purged to easily cause abrasion leakage of the measuring cylinder is solved, the problem of frequent blockage of the charging bucket pressure-taking pipe is eliminated, the maintenance workload is reduced, and the accuracy and reliability of charging bucket pressure measurement are more effectively improved, thereby realizing stable and smooth production of the blast furnace.
Claims (9)
1. A blast furnace charge tank pressure, material level detection device, its characterized in that: including radar charge level indicator (1), charge level measuring tube (6) and material jar body (7), charge level measuring tube (6) lower extreme welded connection is on material jar body (7) roof, charge level measuring tube (6) and the inside intercommunication of material jar body (7), the inner wall parallel and level of charge level measuring tube (6) lower extreme and material jar body (7) roof, radar charge level indicator (1) fixed connection is in charge level measuring tube (6) upper end, radar charge level indicator (1) including radar charge level indicator antenna (11), the central point of the inside upper end of charge level measuring tube (6) is established to radar charge level indicator antenna (11), be equipped with on the lateral wall of charge level measuring tube (6) middle part and sweep hole (13), the welding has on sweeping pipe (5) on sweeping hole (13), sweeping pipe (5) and establish in charge level measuring tube (6) outside, sweeping pipe (5) one end of keeping away from sweeping hole (13) is connected with nitrogen gas pipeline (15), sweeping and be connected with the valve between pipe (5) and the nitrogen gas pipeline (15).
2. The blast furnace tank pressure and level detecting device according to claim 1, wherein: the utility model discloses a nitrogen gas pipeline, including blowing hole (13), a plurality of blowing hole (13) use material level measuring cylinder (6) axis as central circumference equipartition, all weld on every blowing hole (13) and blow pipe (5), the one end that blowing hole (13) was kept away from to every blowing pipe (5) all is connected with nitrogen gas pipeline (15), all is connected with the valve between nitrogen gas pipeline (15) and every blowing pipe (5).
3. The blast furnace tank pressure and level detecting device according to claim 2, wherein: the utility model provides a fill level measuring cylinder (6) lateral wall on be equipped with and get pressure hole (12), get pressure hole (12) and establish in sweeping hole (13) top, get to press welding on hole (12) and have material jar pressure to get and press pipe (8), material jar pressure is got and is pressed pipe (8) and is established in the fill level measuring cylinder (6) outside, material jar pressure is got and is pressed pipe (8) and keep away from, is connected with and gets to press, sweep pipeline (14) in the one end of pressure hole (12), gets to press, sweeps pipeline (14) and nitrogen gas pipeline (15) intercommunication.
4. A blast furnace tank pressure and level detecting device according to claim 3, wherein: the pressure taking and sweeping pipeline (14) and the charging bucket pressure taking and sweeping pipe (8) are connected with a valve, the pressure taking and sweeping pipeline (14) is provided with a pressure transmitter (9) and a constant-current sweeping device (10), the pressure transmitter (9) and the constant-current sweeping device (10) are connected in series, and the pressure transmitter (9) is close to the charging bucket pressure taking and sweeping pipe (8).
5. The blast furnace pot pressure and level detection device according to claim 4, wherein: the included angle of the vertical surface between the axis of each purging hole (13) and the axis of the material level measuring cylinder (6) is 60 degrees, and each purging pipe (5) is coaxial with each purging hole (13).
6. The blast furnace pot pressure and level detection device according to claim 4, wherein: the included angle of the vertical surface between the axis of each pressure taking hole (12) and the axis of the material level measuring cylinder (6) is 60 degrees, and the pressure taking holes (12) are coaxial with the material tank pressure taking pipe (8).
7. The blast furnace tank pressure and level detection apparatus according to any one of claims 1 to 6, wherein: the radar level gauge is characterized in that a level measuring cylinder flange (4) is arranged at the upper end of the level measuring cylinder (6), a radar level gauge flange (3) is arranged at the lower end of the radar level gauge (1), and the level measuring cylinder flange (4) is connected with the radar level gauge flange (3) through bolts (2) and nuts.
8. The blast furnace pot pressure and level detection device according to claim 7, wherein: the radar level gauge antenna (11) is arranged at the center of the flange (4) of the level measuring tube.
9. The blast furnace tank pressure and level detecting device according to any one of claims 3, 4, 5, 6, 8, wherein: the inner wall of the joint of the material level measuring cylinder (6) and the purging pipe (5) is smooth and has no bulge; the inner wall of the joint of the material level measuring cylinder (6) and the pressure taking pipe (8) of the charging bucket is smooth and has no bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322159494.5U CN220485741U (en) | 2023-08-11 | 2023-08-11 | Blast furnace material tank pressure and material level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322159494.5U CN220485741U (en) | 2023-08-11 | 2023-08-11 | Blast furnace material tank pressure and material level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220485741U true CN220485741U (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322159494.5U Active CN220485741U (en) | 2023-08-11 | 2023-08-11 | Blast furnace material tank pressure and material level detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220485741U (en) |
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2023
- 2023-08-11 CN CN202322159494.5U patent/CN220485741U/en active Active
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