阅读说明：本技术 高炉仪表保护装置 (Blast furnace instrument protection device ) 是由 孙丰凯 于 2021-08-20 设计创作，主要内容包括：一种高炉仪表保护装置,该装置包括基座构件、仪表仓、升降机构、保护套管及电动阀。基座构件包括基座护管和基座法兰,基座护管的一端连通高炉,另一端连接基座法兰,基座护管上设有至少一个第一进气口；仪表仓内设置仪表,仪表底部设有排气孔,顶部设有至少一个第二进气口；电动阀的一端连接基座法兰,另一端连接保护套管的一端；保护套管顶部设置法兰盖,法兰盖上设有至少一个第三进气口,第二进气口通过气管连接第三进气口；升降机构包括固定件和升降件,固定件安装在法兰盖的上方,升降件一端连接固定件,另一端穿过法兰盖而与仪表仓的顶部连接。本发明可以在高炉恶劣条件对仪表进行有效保护,且便于对仪表进行维修或维护。(A blast furnace instrument protection device comprises a base component, an instrument bin, a lifting mechanism, a protection sleeve and an electric valve. The base component comprises a base protective pipe and a base flange, one end of the base protective pipe is communicated with the blast furnace, the other end of the base protective pipe is connected with the base flange, and the base protective pipe is provided with at least one first air inlet; an instrument is arranged in the instrument bin, the bottom of the instrument is provided with an exhaust hole, and the top of the instrument is provided with at least one second air inlet; one end of the electric valve is connected with the base flange, and the other end of the electric valve is connected with one end of the protective sleeve; the top of the protective sleeve is provided with a flange cover, the flange cover is provided with at least one third air inlet, and the second air inlet is connected with the third air inlet through an air pipe; the lifting mechanism comprises a fixing piece and a lifting piece, the fixing piece is installed above the flange cover, one end of the lifting piece is connected with the fixing piece, and the other end of the lifting piece penetrates through the flange cover to be connected with the top of the instrument bin. The invention can effectively protect the instrument under the severe condition of the blast furnace and is convenient for maintaining or repairing the instrument.)

1. A blast furnace instrument protection device is characterized by comprising a base component, an instrument bin, a lifting mechanism, a protection sleeve and an electric valve;

the base component comprises a base protective pipe and a base flange, one end of the base protective pipe is communicated with the blast furnace, the other end of the base protective pipe is connected with the base flange, and at least one first air inlet is formed in the base protective pipe;

an instrument is arranged in the instrument bin, the bottom of the instrument is provided with an exhaust hole, and the top of the instrument is provided with at least one second air inlet;

one end of the electric valve is connected with the base flange, and the other end of the electric valve is connected with one end of the protective sleeve; the top of the protective sleeve is provided with a flange cover, the flange cover is provided with at least one third air inlet, and the second air inlet is connected with the third air inlet through an air pipe;

the lifting mechanism comprises a fixing piece and a lifting piece, the fixing piece is arranged above the flange cover, one end of the lifting piece is connected with the fixing piece, and the other end of the lifting piece penetrates through the flange cover to be connected with the top of the instrument bin; the instrument bin is selectively positioned in the base protective sleeve or the protective sleeve by controlling the lifting mechanism.

2. The blast furnace instrument protection device of claim 1, further comprising a first temperature sensor, a first pressure sensor, and a controller;

the first temperature sensor is configured to measure first temperature information in the instrument bin;

the first pressure sensor is configured to measure first pressure information in the instrument chamber;

the controller is configured to selectively control the control lifting mechanism according to the first temperature information and/or the first pressure information, so that the instrument bin is located in the base protective sleeve or the protective sleeve, and the electric valve is closed when the instrument bin is located in the protective sleeve.

3. The blast furnace instrument protection device of claim 2, further comprising a second temperature sensor and a second pressure sensor;

the second temperature sensor is configured to measure second temperature information in the blast furnace;

the second pressure sensor is configured to measure second pressure information in the blast furnace;

the controller is further configured to selectively control the control lifting mechanism according to the second temperature information and/or the second pressure information, so that the instrument bin is located in the base protective sleeve or the protective sleeve, and the electric valve is closed when the instrument bin is located in the protective sleeve.

4. The blast furnace instrument protection device of claim 2 or 3, wherein the cyclone device is connected to the inner side of the first air inlet on the base protective pipe, and the cyclone device comprises a universal nozzle.

5. The blast furnace instrument protection device of claim 4, wherein the number of the first air inlets is plural.

6. The blast furnace instrument protection device of claim 2, wherein the lifting mechanism is an electric push rod, the electric push rod further comprising a magnetic switch, the magnetic switch being electrically connected to the controller.

7. The blast furnace instrument protection device of claim 2, wherein the controller is electrically connected to an upper computer, and/or an air outlet valve is installed at the bottom of the instrument bin.

8. The blast furnace instrument protection device of claim 1, wherein a spring is disposed inside the protective sleeve, one end of the spring is connected to the flange cover, and the other end of the spring is connected to the instrument chamber.

9. The blast furnace instrument protection device of claim 6, wherein said air tube is tied to said spring.

10. The blast furnace instrument protection device of claim 1, wherein the flange cover is provided with an electromagnetic valve, and/or the bottom of the instrument bin is provided with an air outlet valve, and/or the electric valve is connected with the protection sleeve in a bolt and pin shaft mode.

Technical Field

The invention relates to the technical field of blast furnace accessories, in particular to a blast furnace instrument protection device.

Background

The blast furnace is mainly applied to the field of iron and steel smelting, and the working environment inside the blast furnace is extremely severe: the high temperature, the high pressure, the high dust and the high internal gas concentration contain adhesive tar, and the instruments (such as a 3D radar scanner) for measuring the internal data of the blast furnace are easy to damage under the harsh environment, influence the smelting progress, and the replacement or maintenance of the instruments are complex to operate and have large workload.

Therefore, there is a need in the art for a new instrument protection device that addresses the above-mentioned problems.

Disclosure of Invention

The method aims to solve the problems in the prior art, namely, the method is used for solving the problems of how to effectively protect the instrument under the condition of blast furnace severity and facilitating the maintenance of the instrument. The invention provides a blast furnace instrument protection device, which comprises a base component, an instrument bin, a lifting mechanism, a protection sleeve and an electric valve, wherein the base component is arranged on the base component;

the base component comprises a base protective pipe and a base flange, one end of the base protective pipe is communicated with the blast furnace, the other end of the base protective pipe is connected with the base flange, and at least one first air inlet is formed in the base protective pipe;

an instrument is arranged in the instrument bin, the bottom of the instrument is provided with an exhaust hole, and the top of the instrument is provided with at least one second air inlet;

one end of the electric valve is connected with the base flange, and the other end of the electric valve is connected with one end of the protective sleeve; the top of the protective sleeve is provided with a flange cover, the flange cover is provided with at least one third air inlet, and the second air inlet is connected with the third air inlet through an air pipe;

the lifting mechanism comprises a fixing piece and a lifting piece, the fixing piece is arranged above the flange cover, one end of the lifting piece is connected with the fixing piece, and the other end of the lifting piece penetrates through the flange cover to be connected with the top of the instrument bin; the instrument bin is selectively positioned in the base protective sleeve or the protective sleeve by controlling the lifting mechanism.

In one embodiment, the system further comprises a first temperature sensor, a first pressure sensor and a controller;

the first temperature sensor is configured to measure first temperature information in the instrument bin;

the first pressure sensor is configured to measure first pressure information in the instrument chamber;

the controller is configured to selectively control the control lifting mechanism according to the first temperature information and/or the first pressure information, so that the instrument bin is located in the base protective sleeve or the protective sleeve, and the electric valve is closed when the instrument bin is located in the protective sleeve.

In one embodiment, a second temperature sensor and a second pressure sensor are further included;

the second temperature sensor is configured to measure second temperature information within the blast furnace;

the second pressure sensor is configured to measure second pressure information in the blast furnace;

the controller is further configured to selectively control the control lifting mechanism according to the second temperature information and/or the second pressure information, so that the instrument bin is located in the base protective sleeve or the protective sleeve, and the electric valve is closed when the instrument bin is located in the protective sleeve.

In one embodiment, the inner side of the first air inlet on the base protective pipe is connected with a cyclone device, and the cyclone device comprises a universal spray head.

In one embodiment, the number of the first air inlets is plural.

In an embodiment, the lifting mechanism is an electric push rod, the electric push rod further includes a magnetic switch, and the magnetic switch is electrically connected to the controller.

In one embodiment, the single chip microcomputer is electrically connected with an upper computer.

In one embodiment, a spring is arranged in the protective sleeve, one end of the spring is connected with the flange cover, and the other end of the spring is connected with the instrument bin.

In one embodiment, the air tube is tied to the spring.

In one embodiment, the flange cover is provided with an electromagnetic valve, and/or the bottom of the instrument bin is provided with an air outlet valve.

The invention has the advantages that:

the protection device for the blast furnace instrument can automatically protect the instrument after the instrument fails, and can safely maintain the instrument even if the furnace is not stopped in the production process.

Furthermore, the invention monitors the working state of the instrument in real time by monitoring the temperature and the air pressure in the instrument bin or the blast furnace, and can automatically protect the instrument when abnormality occurs.

Further, through set up the spring in the protective sleeve to with the trachea ligature on the spring, so when the lift piece reciprocated, the trachea can be followed the spring and removed, prevented that the trachea from piling up and blocking the gas circuit and prevent that the trachea from piling up the lift that hinders the lift piece, also reduceed the tracheal risk of damage simultaneously.

Drawings

FIG. 1 is a schematic structural view of a protection device for a blast furnace instrument in an embodiment of the present invention;

FIG. 2 is a schematic view of the main structure of a protection device for a blast furnace instrument in an embodiment of the present invention;

FIG. 3 is a schematic diagram showing the main structure of a protection device for a blast furnace instrument in an embodiment of the present invention, wherein the instrument container is in use when being located in a protective sheath;

FIG. 4 is a schematic view showing the main structure of a protection device for a blast furnace instrument in an embodiment of the present invention, wherein the instrument chamber is located in a base protection tube in a use state;

FIG. 5 is a schematic view showing a maintenance state of a protection device for a blast furnace meter according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a protection device for a blast furnace instrument in an embodiment of the present invention;

FIG. 7 is a block diagram of a circuit configuration of a protection device for a blast furnace instrument according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a protection device for a blast furnace meter according to another embodiment of the present invention;

FIG. 9 is a schematic view of the main structure of a protection device for a blast furnace meter according to another embodiment of the present invention;

FIG. 10 is a block diagram showing the circuit configuration of a protection device for a blast furnace meter according to another embodiment of the present invention;

fig. 11 is a schematic main structural view of a blast furnace meter protection device according to still another embodiment of the present invention.

Detailed Description

The automatic protection device 80 for the blast furnace instrument is mainly used for protecting the detection instrument 21 from high temperature and dust in the blast furnace 60, and the instrument 21 can normally work in a high-temperature and heavy-dust environment by cooling through cooling gas. The automatic protection device 80 for the blast furnace instrument monitors the temperature and the pressure in the blast furnace 60 in real time, and when the temperature and the pressure are normal, the automatic protection device 80 for the blast furnace instrument descends the instrument 21 to a measurement position under the instruction of the software management platform to measure the charge level. When the temperature or the pressure is abnormal, the automatic protection device 80 of the blast furnace instrument immediately lifts the instrument 21 to the protection sleeve 40 for protection. The measurement of the detection instrument is ensured to be orderly and stable under the complex condition of the blast furnace 60, the maintenance and the repair of the instrument 21 are convenient, and the stable production of the blast furnace is ensured. The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1 to 4, a protection device 80 for a blast furnace instrument provided by the present invention includes a base member 10, an instrument container 20, a lifting mechanism 30, a protection sleeve 40, and an electric valve 50.

The base member 10 is installed on the top of the blast furnace 60, and includes a base protection pipe 11 and a base flange 12, wherein one end of the base protection pipe 11 is connected to the blast furnace 60, and the other end is connected to the base flange 12. The base protective tube 11 is provided with at least one first gas inlet 13, and the first gas inlet 13 can be connected with an external gas source, such as nitrogen or inert gas. By continuously blowing air into the blast furnace 60, dust in the furnace is prevented from entering the base protection pipe 11 and also the ascending high temperature zone dust flow can be suppressed while cooling the meter 21. Further, the number of the first air inlets 13 may be plural, the cyclone device 14 may be connected to the inner side of the first air inlet 13 on the base protection tube 11, the cyclone device 14 may include a universal nozzle through which a fine air flow is injected to the periphery (an air flow is injected into the base protection tube), the multiple air flows are staggered with each other, and an air flow shielding layer is formed at the opening of the base protection tube 11 to prevent dust in the furnace from entering the base protection tube 11 and also to suppress the rising high temperature dust-carrying air flow. Meanwhile, the temperature of the instrument 21 can be reduced. The number of the first air inlets 13 may be determined according to actual use conditions, and is not limited. The connecting flanges in the embodiment all conform to the standard HG 20592-2009.

Referring to fig. 3, a meter 21 is disposed in the meter chamber 20, and any suitable measuring instrument, such as a 3D radar scanner, a level meter, an infrared thermal imaging system, an in-furnace camera, etc., can be adapted in the meter chamber 20. The bottom of the instrument chamber 20 is provided with an exhaust hole 22. At least one second air inlet 23 is provided at the top. One end of the electric valve 50 is connected to the base flange 12, and the other end is connected to one end of the protection sleeve 40. The electric valve 50 may be an electric ball valve or an electric valve thereof, and the material, size and principle thereof are not limited as long as the electric ball valve can allow the meter chamber 20 to pass through when opened and can be isolated from the furnace chamber when closed. A flange cover 41 is arranged on the top of the protective sleeve 40, at least one third air inlet 43 is arranged on the flange cover 41, and the second air inlet 23 is connected with the third air inlet 43 through an air pipe (not shown in the figure). It is worth noting that inert gas with a certain pressure range can be filled into the instrument chamber 20 through the second air inlet 23 and is exhausted through the exhaust hole 22, so that the purpose of explosion prevention is achieved, and meanwhile, the effect of cooling the instrument 21 is achieved. The material of the instrument bin 20 can be stainless steel or any other temperature-resistant material, and the material is not limited; the shape of the instrument chamber 20 may be a circular tube or any other suitable shape, and the shape is not limited.

The lifting mechanism 30 comprises a fixing member 31 and a lifting member 32, the fixing member 31 is installed above the flange cover 41, one end of the lifting member 32 is connected with the fixing member 31, and the other end of the lifting member passes through the flange cover 41 and is connected with the top of the instrument chamber 20. The instrument container 20 is selectively positioned in the base sheath 11 or the protective sheath 40 by controlling the elevating mechanism 30. When the instrument container 20 is located in the base protective tube 11, the electric valve 50 is in an open state. Specifically, when the meter 21 is required to measure, the electric valve 50 is opened, and the meter box 20 is moved into the base protective pipe 11 by the lifting mechanism 30 (as shown in fig. 4). When the instrument 21 needs to be overhauled or in other emergency situations, the high instrument cabin 20 is moved into the protective sleeve 40 by controlling the lifting mechanism 30 (as shown in fig. 3), and the electrically operated valve 50 is in a closed state at the moment, so that the instrument 21 is protected, and the instrument 21 is also convenient to overhaul.

The lifting mechanism 30 may be a linear telescopic drive, such as a hydraulic, pneumatic or other electric linear telescopic drive. An elastic telescopic shield may be mounted outside the lifter 32 to ensure the cleanliness of the lifter 32.

The connection between the electric valve 50 and the protection sleeve 40 is a bolt and pin mode, and the electric valve 50 can rotate along the pin (as shown in fig. 5) as a whole without disassembling the whole device to maintain the meter 21, thereby reducing the maintenance time. When the maintenance is performed, the bolt is loosened, the electric valve 50 integrally rotates 180 degrees along the pin shaft, so that the electric valve 50 and the mechanism in the protective sleeve 40 are completely staggered, the instrument cabin 20 in the protective sleeve 40 can be taken out at the moment, and the bolt is screwed to restore the original position after the maintenance is completed and the mechanism reversely rotates 180 degrees.

Referring to fig. 6 and 7, the protection device 80 for a blast furnace instrument according to the present embodiment may further include a first temperature sensor 71, a second temperature sensor 72, a first pressure sensor 73, a second pressure sensor 74, and a controller 70. A first temperature sensor 71 configured to measure first temperature information within the instrument pod 20; a second temperature sensor 72 configured to measure second temperature information within the blast furnace 60; a first pressure sensor 73 configured to measure first pressure information within the instrument pod 20; a second pressure sensor 74 configured to measure second pressure information within the blast furnace 60; and a controller 70 configured to selectively control the lifting mechanism 30 according to the first temperature information and/or the second temperature information and/or the first pressure information and/or the second pressure information, so that the instrument box 20 is positioned in the base protective tube 11 or the protective sleeve 40, and close the electric valve 50 when the high-temperature instrument box 20 is positioned in the protective sleeve 40. When the instrument pod 20 is located in the base sheath 11, the electric valve 50 is in an open state. Namely, the automatic protection device for the blast furnace instrument can be provided with two groups of temperature and pressure sensors, wherein the first group of sensors are arranged in the instrument bin 20 and are used for measuring the temperature and pressure information in the instrument bin 20; the second set of sensors is mounted on the base shield 11 and is responsible for measuring temperature and pressure information in the blast furnace 60, through the two sets of temperature and pressure information. The controller 70 selectively controls the lift mechanism to perform measurement and protection commands. It should be noted that the temperature and pressure sensors may be arranged in a single set or in multiple sets, and the number of the temperature and pressure sensors is not limited.

In particular, the first temperature sensor 71 may be mounted within the instrument compartment 20, setting the maximum temperature inside the instrument compartment 20 to the resting temperature of the instrument 21, e.g. 55 ℃. In application, if the instrument chamber 20 is damaged, the internal temperature of the instrument chamber 20 rises; or the instrument 21 cannot be cooled due to the failure of the cooling device, or for other reasons, the internal temperature of the instrument container 20 reaches 55 ℃, the first temperature sensor 71 transmits the temperature information to the controller 70, the controller 70 controls the lifting mechanism 30 to lift the instrument container 20 into the protection sleeve 40, and then the electric valve 50 is closed. In addition, the controller 70 may also be electrically connected to an upper computer 76, and the upper computer 76 may be used to input a sleep command to send to the controller 70, and when the controller 70 receives the sleep command, the controller 70 may control the lifting mechanism 30 to lift the instrument container 20 into the protective sleeve 40, and then close the electric valve 50. It should be noted that, the electric valve 50 and the lifting mechanism 30 can be controlled manually, so as to facilitate installation, overhaul or maintenance work of technicians. The technician may also analyze various signals or data from the two sets of sensors or furnaces via the host computer 76.

The second temperature sensor 72 may be disposed on the base protective pipe 11 to measure second temperature information of the interior of the blast furnace 60, the environment in the blast furnace 60 is bad, the controller 70 may determine a sudden temperature change in the blast furnace 60 according to a change in the second temperature information, and when the temperature change in the blast furnace 60 occurs, the controller 70 controls the elevating mechanism 30 to raise the instrument container 20 into the protective pipe 40, and then closes the electric valve 50.

The second pressure sensor 74 may be disposed on the base protection tube 11, if the instrument bin 20 is damaged, the internal pressure may be rapidly reduced to the pressure of the blast furnace 60, and it can be determined whether the environment of the instrument bin 20 is abnormal or not through the first pressure information and the second pressure information, when an abnormal condition occurs, the controller 70 may control the lifting mechanism 30 to lift the instrument bin 20 into the protection sleeve 40, and then close the electric valve 50, so as to protect the instrument 21.

In addition, the controller 70 may also determine whether the ambient pressure of the instrument container 20 is abnormal by comparing the first pressure information and the second pressure information, and when the pressure is abnormal, the controller 70 may control the lifting mechanism 30 to lift the instrument container 20 into the protective sleeve 40, and then close the electric valve 50 to protect the instrument.

The protection device 80 for a blast furnace meter according to the present embodiment can automatically protect the meter 21 in the case of abnormal temperature or abnormal pressure. The instrument storehouse 20 bottom can also set up the air outlet valve, and this air outlet valve joinable air supply in the twinkling of an eye of promoting instrument storehouse 20, this air outlet valve can be opened rapidly, seals the bottom with gaseous, prevents that the dust from rising inside protective case 40.

Referring to fig. 8 to 10, the present invention also provides a protection device 80 for a blast furnace instrument, wherein two holes are symmetrically formed in the top of the blast furnace 60, the size of the holes is 300mm to 350mm, and two base members 10 are respectively mounted at one end thereof. The meters 21 within the meter bay 20 are 3D radar scanners. The controller 70 is a single chip microcomputer. The elevator mechanism 30 is an electric push rod having a magnetic switch 75. The magnetic switch 75 is electrically connected to the single chip. That is, after the electric push rod is retracted to the proper position, the magnetic switch 75 can send a command to the single chip, and the single chip sends another command to close the electric valve 50 after receiving the command. A closed space isolated from the interior of the blast furnace 60 is formed between the closed electric valve 50 and the protection sleeve 40, thereby achieving the purpose of protecting the instrument 21.

Referring to fig. 11, the present invention further provides an embodiment, which is different from the foregoing embodiment in that: a spring 44 is arranged in the protective sleeve 40, one end of the spring 44 is connected with the flange cover 41, and the other end is connected with the instrument chamber 20. The trachea is tied to the spring 44. The flange cover 41 is provided with a solenoid valve 45. The electromagnetic valve 45 is connected with a flow meter 45 through an air pipe, and the flow meter 45 is electrically connected with the controller 70. Through setting up spring 44 in protecting pipe 40 to with the trachea ligature on spring 44, so when lift 32 reciprocated, the trachea can be followed spring 44 and removed, prevents that the trachea from piling up and blockking the gas circuit and preventing that the trachea from piling up the lift that hinders lift 32, also lowers the tracheal risk of damage simultaneously.

The electromagnetic valve 45 on the flange cover 41 is in a normally closed state, and a closed constant-pressure space is formed in the instrument chamber 20 by inputting inert gas with constant pressure and within a preset pressure range into the instrument chamber 20, so that the device achieves the explosion-proof requirement.

In conclusion, the blast furnace in operation is a high-temperature and high-dust pressure container, and the automatic protection device for the blast furnace is an important protection device for maintaining the normal operation of the system and protecting the detection instrument of the blast furnace. The automatic protection blast furnace instrumentation does not receive the dust influence in the blast furnace, cools down through cooling gas and makes blast furnace instrumentation also can normally work under high temperature, heavy dust environment. The automatic protection device detects the temperature and the pressure in the blast furnace in real time, and when the temperature and the pressure are normal, the automatic protection device moves the blast furnace measuring instrument to a specified position under the instruction of the software management platform to scan the charge level in the furnace. When temperature and pressure are unusual, automatic safety device can move blast furnace instrumentation to the instrument storehouse in immediately, avoids instrumentation to damage.

The automatic protection device for the instrument is installed on the blast furnace, so that the instrument can be ensured to be orderly and stably measured under the complex condition of the blast furnace, the instrument can be conveniently maintained, the stable production of the blast furnace is ensured, the real-time and stable detection of the charge level can guide the optimal control of a distribution system, the coke ratio is reduced, the energy is saved, the yield is stable and high, and the automatic protection device has important significance for improving the production efficiency and reducing the combustion ratio. Therefore, the device has very important value for improving the production benefit of blast furnace ironmaking.

The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solution of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.