The upper and lower dense material flow valves on the blast furnace cannot be opened

I am responsible for the top equipment, you should have learned hydraulics, such as this kind of failure can not be opened or closed is easier to judge, the upper dense can not be opened: the execution process of the upper dense valve plate is first loosened, then unscrewed, then screwed in, and then pressed, if you do not loosen the valve plate will definitely not be opened, and then see if the actuator driven by the cylinder is stuck by hard objects such as ore? Is there oil in the tubing?

Is the pressure enough to turn on? I have been in the industry for 5 years, and the relationship between the secret and the secret is very small, I have not encountered, the card material is generally stuck by the material irrigation, and our blast furnace has not been stuck. How can there be such a big material?

Unless it freezes into one after freezing, the small blast furnace is stuck with a long pole with an oxygen tube or something, but you must pay attention to the gas!!

The highest failure rate of each valve on the top of the furnace is the reversing valve, the electro-hydraulic reversing valve is driven by the pilot to achieve reversing, the pilot valve is easier to be stuck, followed by the situation of not maintaining pressure is more troublesome, in short, you suggest that you take a serious look at your hydraulic drawings, look at the role of those valves you will understand a lot, I am in Jigang at the beginning of the hydraulic are more nervous, after a long time, I hope it will help you.

wing198788 explanation is in place, I engage in operation, the general tank will not be stuck, the feeding tank must be designed with a grid, and it must be smaller than the central pipe, so that the general material or foreign matter in the feeding tank will be cleaned up. If the material flow valve failure can not be fully opened and the material is stuck, you can take high-pressure backlash, that is, open the release valve, but the time should be very short, generally a few seconds, to see if it can be blown out, so that it is not possible only to ignition and rest the air treatment.

The function of the equalizing valve is to control the effect of the equalizing gas entering the blast furnace blanking tank, generally it is to use net gas as the primary equalizing gas and nitrogen as the secondary equalizing gas, when the pressure in the lower tank is close to the net gas pressure.

When the pressure in the tank is close to the top of the furnace, close the secondary equalization, then you can open the lower seal, open the throttle valve and start to load the charge in the blanking tank into the blast furnace.

The function of the equalizing valve is to equalize the pressure of the feed tank, which can be filled in the tank to make the pressure of the tank slightly greater than the pressure in the furnace, so as to ensure that the charge can be placed in the blast furnace. Because of the existence of the pressure at the top of the furnace, if the pressure is not uniform, the material cannot be put into the furnace.

The causes of the failure and the maintenance methods are as follows:

1) Leakage of filler in the temperature sensing bag The temperature sensing package should be repaired, the leakage should be repaired and the refrigerant should be refilled.

2) The throttle valve thimble is too short, or the throttle hole is blocked, which can be removed and cleaned to eliminate the blockage. If the throttle valve thimble is too short, it should be replaced.

3) The filter at the mouth of the throttle valve is blocked, especially when the pipe diameter is less than 5mm, this phenomenon often occurs, and it should be disassembled and cleaned.

4) Lubricating oil freezing Check whether the grade and condensation temperature of the lubricating oil meet the requirements, and replace the lubricating oil if necessary.

5) Mixed water in the freon refrigeration system, and an ice plug should be formed at the throttle hole of the throttle valve The ice plug should be removed, the desiccant should be replaced, and the cause of the mixed water should be found out and eliminated.

If the blast furnace is opened under the conditions, the temperature can generally reach the standard value before it can be opened, which depends on the specific operation instructions.

The condition of opening is that you can open it after waiting for its atmospheric pressure to return to Shixin'an, or its air pressure will decrease to the saturation value, so that it will not be so difficult to open it.

The blast furnace has abnormal upper and lower densities, opens the empty car, and the equipment failure is not high, and the root cause of the fault is relatively hidden, which cannot be eliminated in time by rectifying mechanical spare parts and electrical components.

temperature, and then it is enough to meet these two conditions at the right time.

Generally, as long as the conditions for opening are in line with the security of the state, they can be opened directly.

There are many ways to open Gaolu encryption, such as some related, which can be opened with some tools and some other small methods.

The conditions for the secret opening of the high-rise building, for such a condition, I think it should be in accordance with some of their regulations.

The secret on the blast furnace is opened, and Qiao Jian is mainly looking at his subjective condition is to find his main operation if he finds the subjective condition in **?

The condition for opening is to cut off the power during maintenance.

Go downstairs and open the conditions I asked you to give him a mobile phone, which can be achieved, I said you can go and see it, it can be found, you can.

A total of 176 projects are planned for the ironmaking plant, of which 11 are outsourced, all of which were completed on time, and the three blast furnaces were delivered ahead of schedule. We found the problems existing in equipment and equipment management and actively rectified them, and received good results. Yuan.

The sequence of action of the furnace top valve during the loading is as follows: charging: open the sealing valve; After the charging is over, close the sealing valve; Open the equalizing valve, and close the equalizing valve after the pressure reaches the top pressure; Fabric:

Open the sealing valve, open the flow control valve; After the material is distributed, the joint flow valve; Close the sealing valve; Open Loose Valve; The tank is ready to start the loading step again.

Open the sealing valve; Open the blocking valve, close the blocking valve, and close the sealing valve; Open the pressure equalizing valve, open the sealing valve, open the material flow regulating valve; After the material is distributed, close the material flow control valve; Close the sealing valve; Open the pressure equalizing release valve for the next loading.

Whenever the angle motor of chute rotation is always rotating, can rotate forward or reverse, depending on the actual situation, the motor of chute tilting is rotating according to the cloth matrix, and the chute tilts to a certain angle when the cloth is brought to a certain number of turns.

For the blast furnace on the top of the string tank, the large valves include upper sealing valve, lower sealing valve, gas release valve, pressure equalizing valve and plunger valve. The plunger valve is used for hopper control discharging, the upper and lower sealing valves are used by the tank to control the unloading and sealing of the tank, the gas release valve is used to release gas as the name suggests, and the pressure equalizing valve is used to charge and reduce pressure with gas (nitrogen and gas) feed tank. That's pretty much it, maybe it's wrong.

Add the ingredients, it should be.

There are many valves above the blast furnace, which one do you have to ask.

The function of the equalizing valve is to control the effect of equalizing the pressure gas entering the blast furnace blanking tank, under normal circumstances, it is to use net gas to do a pressure equalizing gas, and nitrogen gas to do a secondary pressure equalizing gas, when the pressure in the lower tank is close to the net gas pressure, the first pressure equalization is closed by the hood valve, and the secondary equalization is started, and when the pressure in the tank is close to the top of the furnace, the secondary equalization is closed, and the lower seal can be opened at this time, and the throttle valve can be opened.

The charge from the blanking tank is now loaded into the blast furnace.

The function of the upper density is to seal the blast furnace top gas from entering the old state-of-the-state tank, and the function of the upper density is to seal the gas and nitrogen gas when the pressure is equalized, and to seal the gas flow at the top of the furnace to prevent leakage from the feeding tank when the blast furnace is discharged.

The role of the size clock is similar to that of the type blast furnace.