Blast furnace charge level scanning imaging system

Abstract

The utility model discloses a blast furnace charge level scanning imaging system, which comprises a mounting cylinder; the driving mechanism is arranged at the top end of the mounting cylinder and extends into the mounting cylinder; the millimeter-wave radar is fixedly arranged at the driving end of the driving mechanism, and a high-temperature-resistant wave-transparent radome covers the millimeter-wave radar; the isolating valve is arranged on the mounting cylinder; the blowing mechanism is communicated to the bottom end of the mounting cylinder; the cooling mechanism is communicated to the mounting cylinder; and a PLC (Programmable Logic Controller) is arranged in the control box. The measuring system disclosed by the utility model realizes continuous measurement of the charge level, is not influenced by a material distribution process, is high in measuring precision, is suitable for a high-temperature, high-pressure and high-dust environment, is high in safety, and is beneficial to energy conservation, emission reduction and safety production of enterprises.

Description

Technical Field

[0001] This utility model relates to the field of material surface measurement technology, and in particular to a blast furnace material surface scanning imaging system. Background Technology

[0002] Previously, the blast furnace burden level was monitored using 2-3 mechanical probes. This method could monitor the height of 2-3 key points on the burden level, providing basic data for automatic blast furnace operation and enabling automated operation based on the burden distribution matrix. However, with increasing automation in production, this method has several drawbacks: it cannot measure continuously, and measurements cannot be taken during the burden distribution process; it cannot track instances of burden slippage, settling, or collapse in a timely manner, resulting in large measurement errors; installation is limited to vertical installation; the mechanical transmission system is complex, leading to significant on-site maintenance and high repair costs; and due to its small measurement range, it cannot measure the burden level height throughout the entire process. Under these circumstances, analyzing the burden distribution within the furnace becomes difficult, and on-site workers often have to rely on experience to judge the burden distribution, which is detrimental to real-time decision-making in on-site operations.

[0003] For large, enclosed reaction vessels such as blast furnaces, vertical shaft furnaces, and cement kilns, the interior is a high-temperature, high-pressure, and high-dust environment. Material distribution and level detection, as well as 3D imaging, are currently urgent problems to be solved and are key technologies for energy conservation, emission reduction, and safe production in high-energy-consuming and high-polluting enterprises. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the existing technology, it is desirable to provide a blast furnace burden surface scanning imaging system that enables continuous measurement of the burden surface, is not affected by the burdening process, has high measurement accuracy, is suitable for high temperature, high pressure and high dust environments, has high safety, and is conducive to energy conservation, emission reduction and safe production of enterprises.

[0005] This utility model provides a blast furnace burden surface scanning imaging system, comprising:

[0006] The mounting cylinder is fixedly installed on the blast furnace, with its bottom end extending into the blast furnace and facing the material surface.

[0007] A drive mechanism is located at the top of the mounting cylinder and extends into it, for driving the millimeter-wave radar to extend from the bottom of the mounting cylinder;

[0008] A millimeter-wave radar is fixedly mounted on the drive end of the drive mechanism, and is covered with a high-temperature resistant, wave-transparent antenna cover.

[0009] An isolation valve is provided on the mounting cylinder to isolate the millimeter-wave radar from the blast furnace when the millimeter-wave radar is retracted into the mounting cylinder.

[0010] A purging mechanism is connected to the bottom end of the mounting cylinder and is used to purge the high-temperature resistant wave-transparent antenna cover.

[0011] A cooling mechanism is communicated to the mounting cylinder and used for cooling the millimeter wave radar;

[0012] A control box is internally provided with a PLC controller, and the driving mechanism, the millimeter wave radar, the isolation valve, the purging mechanism and the cooling mechanism are electrically connected with the PLC controller.

[0013] Further, a flange is fixedly arranged on the mounting cylinder and fixedly connected with the blast furnace through the flange, and a sealing gasket is arranged between the flange and the blast furnace.

[0014] Further, the driving mechanism comprises a mounting plate fixedly arranged at the top end of the mounting cylinder, a hydraulic cylinder fixedly arranged on the mounting plate, a piston rod of the hydraulic cylinder penetrating through the mounting plate and extending into the mounting cylinder, and the hydraulic cylinder being connected to a hydraulic pump station through a high-pressure pipeline.

[0015] Further, the high-temperature-resistant wave-transparent radome comprises, from outside to inside, a weather-resistant outer coating layer, a dense silicon nitride ceramic layer, a porous silicon nitride ceramic layer, a quartz glass cloth reinforced phosphate composite skin, a wave-transparent substrate and a wave-transparent inner coating layer.

[0016] Further, the isolation valve is an electric knife-type gate valve.

[0017] Further, the purging mechanism comprises a high-pressure nitrogen source, the high-pressure nitrogen source being connected to one side of the bottom end of the mounting cylinder through a purging pipeline and facing the high-temperature-resistant wave-transparent radome, and the purging pipeline being provided with a first control valve and a first pressure sensor.

[0018] Further, the cooling mechanism comprises a circulating pump, a spiral cooling channel is arranged in the mounting cylinder, an input end of the circulating pump is connected to a cooling water source, an output end of the circulating pump is connected to an inlet of the cooling channel through a water inlet pipe, the water inlet pipe is provided with a second control valve and a second pressure sensor, and an outlet of the cooling channel is connected with a water return pipe; and a temperature sensor electrically connected with the PLC controller is arranged at the cylinder opening of the bottom end of the mounting cylinder.

[0019] Further, the PLC controller is communicatively connected with a main control room through a communication module.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] The measurement system of the utility model realizes the continuous measurement of the material surface, is not affected by the material distribution process, and has high measurement precision; the measurement system is provided with a blowing mechanism and a cooling mechanism, and is suitable for high-temperature, high-pressure and high-dust environments.

[0022] The measurement system of the present application is directly installed at the furnace throat part, can monitor phenomena such as material collapse, material setting and material surface inclination, is convenient for blast furnace operators to obtain information in the furnace in time, provides a basis for blast furnace operation, thereby guarantees high yield, high quality and low consumption of the blast furnace and greatly prolongs the effective life of the blast furnace, is beneficial to energy saving, emission reduction and safety production of enterprises.

[0023] It should be understood that the content described in the content part of the utility model is not intended to limit the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the utility model will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0024] Other features, objects and advantages of the utility model will become more apparent by reading the detailed description of the non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 It is a structural schematic view of the blast furnace material surface scanning imaging system.

[0026] Reference numerals in the drawings: 1, mounting cylinder; 2, driving mechanism; 3, millimeter wave radar; 4, isolation valve; 5, blowing mechanism; 6, cooling mechanism; 7, control box; 8, main control room; 9, blast furnace;

[0027] 21, mounting plate; 22, hydraulic cylinder;

[0028] 51, blowing pipeline; 52, first control valve; 53, first pressure sensor;

[0029] 61, water inlet pipe; 62, second control valve; 63, second pressure sensor. DETAILED DESCRIPTION

[0030] The utility model will be further described in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings.

[0031] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0032] Please refer to Figure 1 The embodiment of the utility model provides a kind of blast furnace charge level scanning imaging system, comprising:

[0033] Mounting cylinder 1 is fixedly installed on blast furnace 9, and its bottom end extends into blast furnace 9 and is towards charge level;

[0034] Driving mechanism 2 is arranged at the top end of mounting cylinder 1 and extends into it, for driving millimeter wave radar 3 to extend from the bottom end of mounting cylinder 1;

[0035] Millimeter wave radar 3 is fixedly arranged at the driving end of driving mechanism 2, and a high-temperature-resistant wave-transparent radome is arranged on it;

[0036] Isolation valve 4 is arranged on mounting cylinder 1, for isolating millimeter wave radar from blast furnace 9 when it is retracted into mounting cylinder 1;

[0037] Blowing mechanism 5 is connected to the bottom end of mounting cylinder 1, for blowing and cleaning high-temperature-resistant wave-transparent radome;

[0038] Cooling mechanism 6 is connected to mounting cylinder 1, for cooling millimeter wave radar 3;

[0039] Control box 7 is provided with PLC controller inside, and driving mechanism 2, millimeter wave radar 3, isolation valve 4, blowing mechanism 5 and cooling mechanism 6 are electrically connected with PLC controller respectively.

[0040] In this embodiment, the measuring system is directly installed at the throat part of blast furnace 9, and mounting cylinder 1 is inclined towards charge level. Driving mechanism 2 drives millimeter wave radar 3 to extend to the cylinder mouth at the bottom end of mounting cylinder 1, and then real-time monitoring of charge level is carried out, so that phenomena such as material collapse, material setting and charge level deviation can be monitored, and the operator of blast furnace can obtain information in the furnace in time, which provides a basis for blast furnace operation. Thus, high yield, high quality and low consumption of blast furnace are ensured, and the effective life of blast furnace is greatly prolonged, which is beneficial to energy saving and emission reduction and safe production of enterprises.

[0041] During the operation of millimeter wave radar 3, high-temperature-resistant wave-transparent radome protects it from high temperature, and cooling mechanism 6 is used for cooling it at the same time. Blowing mechanism 5 blows dust on high-temperature-resistant wave-transparent radome to ensure the accuracy of imaging, which is suitable for high-temperature, high-pressure and high-dust environment.

[0042] In a preferred embodiment, flange is fixedly sleeved on mounting cylinder 1, and mounting cylinder 1 is fixedly connected with blast furnace 9 through flange. Sealing pad is arranged between flange and blast furnace 9, so that mounting is convenient, stable, and good in sealing performance.

[0043] In a preferred embodiment, as shown in Figure 1 The driving mechanism 1 includes a mounting plate 21 fixedly arranged at the top end of the mounting cylinder 1, and a hydraulic cylinder 22 fixedly arranged on the mounting plate 21, the piston rod of the hydraulic cylinder 22 penetrating through the mounting plate 21 and extending into the mounting cylinder 1, and the hydraulic cylinder 22 being connected to the hydraulic pump station through a high-pressure pipeline.

[0044] In this embodiment, the hydraulic cylinder 22 drives the piston rod to extend to move the millimeter wave radar 3 to the cylinder port at the bottom end of the mounting cylinder 1 to realize material surface monitoring; when the millimeter wave radar 3 is at risk of damage, the hydraulic cylinder 22 drives the piston rod to retract to move the millimeter wave radar 3 into the mounting cylinder 1, and then the isolation valve 4 is closed to isolate the millimeter wave radar 3 from the blast furnace 9, thereby improving the safety of the millimeter wave radar 3.

[0045] In a preferred embodiment, the high-temperature-resistant wave-transparent radome includes, from outside to inside, a weather-resistant outer coating layer, a dense silicon nitride ceramic layer, a porous silicon nitride ceramic layer, a quartz glass cloth reinforced phosphate composite skin, a wave-transparent substrate, and a wave-transparent inner coating layer, which has excellent wave-transparent performance and does not affect the monitoring of the millimeter wave radar 3, and has good high-temperature-resistant protection effect.

[0046] In a preferred embodiment, the isolation valve 4 is an electric knife-type gate valve, which realizes automatic isolation of the millimeter wave radar 3 and has good isolation effect.

[0047] In a preferred embodiment, as shown in Figure 1 The purging mechanism 5 includes a high-pressure nitrogen source, which is connected to the bottom end of the mounting cylinder 1 through a purging pipeline 51 and faces the high-temperature-resistant wave-transparent radome, and the purging pipeline 51 is provided with a first control valve 52 and a first pressure sensor 53.

[0048] In this embodiment, when the millimeter wave radar 3 is monitoring, high-pressure nitrogen gas output by the high-pressure nitrogen source is blown out through the purging pipeline 51, fully impacting the adhesion path of the gas and dust in the furnace, protecting the high-temperature-resistant wave-transparent radome from being damaged by dust, and ensuring accurate imaging of the millimeter wave radar 3.

[0049] When the first pressure sensor 53 detects that the purging mechanism 5 cannot normally blow gas, the millimeter wave radar 3 is controlled to retract into the mounting cylinder 1 and be isolated, thereby ensuring the safety of the millimeter wave radar 3.

[0050] In a preferred embodiment, as shown in Figure 1 The cooling mechanism 6 includes a circulating pump, a spiral-shaped cooling channel is arranged in the mounting cylinder 1, the input end of the circulating pump is connected to a cooling water source, the output end is connected to the inlet of the cooling channel through a water inlet pipe 61, the water inlet pipe 61 is provided with a second control valve 62 and a second pressure sensor 63, and the outlet of the cooling channel is connected to a water return pipe; a temperature sensor electrically connected to a PLC controller is arranged at the cylinder port at the bottom end of the mounting cylinder 1.

[0051] In the embodiment, the circulating pump injects cooling water into the cooling channel to form a cooling cycle, ensuring the normal operation of the millimeter wave radar 3 in a high-temperature environment. When the second pressure sensor 63 detects that the cooling mechanism 6 cannot normally output cooling water, or the temperature sensor detects that the temperature is too high, the millimeter wave radar 3 is controlled to retract into the mounting cylinder 1 and be isolated, ensuring the safety of the millimeter wave radar 3.

[0052] In a preferred embodiment, as shown in Figure 1 The PLC controller is connected to the main control room 8 through the communication module, and the monitoring data of the millimeter wave radar 3 is sent to the main control room 8, so that the user can understand the material surface condition in the blast furnace 9.

[0053] In the description of the specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the description of the specification, the terms "one embodiment", "some embodiments" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A blast furnace stock level scanning imaging system characterized by, The utility model relates to a kind of millimeter wave radar device for blast furnace, including: Mounting cylinder (1), fixedly mounted on blast furnace (9), the bottom end stretches into blast furnace (9) and is towards material surface; Driving mechanism (2), it is arranged at the top end of the mounting cylinder (1) and is in-depth, for driving millimeter wave radar (3) by the bottom end of the mounting cylinder (1) stretches out; Millimeter wave radar (3), fixedly arranged at the driving end of the driving mechanism (2), the high-temperature wave-transparent radome is covered on it; Isolation valve (4), it is arranged on the mounting cylinder (1), for when millimeter wave radar (3) is retracted into the mounting cylinder (1), it is isolated with blast furnace (9); Purging mechanism (5), it is connected to the bottom end of the mounting cylinder (1), for purging the high-temperature wave-transparent radome; Cooling mechanism (6), it is connected to the mounting cylinder (1), for cooling millimeter wave radar (3); Control box (7), PLC controller is arranged in it, the driving mechanism (2), millimeter wave radar (3), isolation valve (4), purging mechanism (5) and cooling mechanism (6) are electrically connected with the PLC controller respectively.

2. The blast furnace burden level scanning imaging system of claim 1, wherein, The flange is fixedly covered on the mounting cylinder (1), and the mounting cylinder (1) is fixedly connected with blast furnace (9) by the flange, and the sealing pad is arranged between the flange and blast furnace (9).

3. The blast furnace charge level scanning imaging system of claim 1, wherein, The driving mechanism (2) includes mounting plate (21) fixedly arranged at the top end of the mounting cylinder (1), the hydraulic cylinder (22) is fixedly arranged on the mounting plate (21), the piston rod of the hydraulic cylinder (22) penetrates the mounting plate (21) and stretches into the mounting cylinder (1), and the hydraulic cylinder (22) is connected to the hydraulic pump station by high-pressure pipeline.

4. The blast furnace charge level scanning imaging system of claim 1, wherein, The high-temperature wave-transparent radome includes weather-resistant outer coating layer, dense silicon nitride ceramic layer, porous silicon nitride ceramic layer, quartz glass cloth reinforced phosphate composite skin, wave-transparent substrate and wave-transparent inner coating layer sequentially arranged from outside to inside.

5. The blast furnace charge level scanning imaging system of claim 1, wherein, The isolation valve (4) is electric knife type gate valve.

6. The blast furnace charge level scanning imaging system of claim 1, wherein, The purging mechanism (5) includes high-pressure nitrogen source, the high-pressure nitrogen source is connected to one side of the bottom end of the mounting cylinder (1) by purging pipeline (51) and is towards the high-temperature wave-transparent radome, and the first control valve (52) and the first pressure sensor (53) are arranged on the purging pipeline (51).

7. The blast furnace charge level scanning imaging system of claim 1, wherein, The cooling mechanism (6) includes circulating pump, the cooling channel of spiral shape is arranged in the mounting cylinder (1), the input end of the circulating pump is connected to cooling water source, the output end is connected to the entrance of the cooling channel by water inlet pipe (61), the second control valve (62) and the second pressure sensor (63) are arranged on the water inlet pipe (61), and the outlet of the cooling channel is connected with backwater pipe;Temperature sensor electrically connected with the PLC controller is arranged at the cylinder mouth of the bottom end of the mounting cylinder (1).

8. The blast furnace charge level scanning imaging system of claim 1, wherein, The PLC controller is communicated and connected with main control room (8) by communication module.

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