JPS5831540B2 - Netsukandrumushikensouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum testing device for measuring, for example, the strength and degree of abrasion of coke, etc., under high temperature conditions.

Conventional hot drum testing equipment uses an external heating method in which a rotating drum containing coke, etc. is heated from the outside. There are disadvantages in that the temperature cannot be raised to around 1,500'C, which is the temperature encountered above, and that the sample coke cannot be taken out quickly after operation for a certain period of time.

Even if it were possible to do so, only a small amount of sample could be charged, and there has been no success with large coke.

Moreover, when the drum is driven, stress is applied to the drum body, resulting in damage.

There is also a gas heating method, but in order to reach a high temperature, the composition of the combustion gas must be within a range that does not damage the material of the drum body, so it has the disadvantage that it cannot be maintained at high temperatures for long periods of time.

The purpose of this invention is to solve the above-mentioned drawbacks of the prior art and to
A so-called internally heated hot drum that can measure the strength and abrasion characteristics of sample coke, etc. at temperatures around 00℃ or higher, and can quickly take out sample coke in a high temperature condition to the outside. We are trying to provide testing equipment.

In order to achieve the object of the invention, the gist of this invention is to provide holding means A, A' for fixing the heating element horizontally and holding it in a dual-supported manner, and a drum storing materials on the outer periphery of the heating element. driving means B for secretly rotating the holding means A and A'; and moving means c and c' for moving the holding means A and A' in the longitudinal direction while blowing inert gas while holding the heating element in one of the holding means A and A'. , and a cantilever lifting means for tilting the drum in one direction.

The present invention will be described in detail below based on an embodiment shown in the drawings. A pedestal 2 is fixed on a foundation concrete 1, and a pedestal 3 is located approximately at the center of the pedestal 2 at one side end. The part is pivoted.

A machine frame 4 is fixed onto the base 3.

The holding means A consists of a main flange 5 fixed to the machine frame 4, an electrode holding flange 6 fixed to the main flange 5, and a spring storage flange γ fixed to the electrode holding flange 6. A heating element 8, which is also made of graphite and has a tubular shape, is fitted in the horizontal direction to the electrode 19 housed in the electrode 6.

A coil spring 9 is attached to the base of the heating element 8 from the bottom.
A model cylindrical body 10 made of, for example, A[203] is pressed and slidably inserted into the spring storage flange γ.

11 is a thermocouple protection tube. Note that a viewing window may be provided near the thermocouple protection tube 11 if desired.

The holding means A' consists of a main flange 12 fixed to the other end face of the machine frame 4, and a support flange 13 fixed to the main flange 12, and a heat insulating material such as Al2O3 is attached to the tip of the support flange 13. The tip of the support 15, which is made of, for example, a graphite type and is attached via the support 14, is inserted into the tip of the heating element 8 which extends in the horizontal direction.

A drum 16 surrounds the outer periphery of the heating element 8 and is attached to the main flanges 5 and 12 via, for example, graphite-impregnated ground backing 4L41'. Rotate confidentially.

This driving means B is designed so that no stress is applied to the drum body 16' during driving, and the driving force is reduced by a motor 17 and a speed reducer 18 installed on the base 3, and the driving force is reduced by this speed reducer 18. A power transmission mechanism that transmits power to the drum 16 (in the embodiment, a chain 21 is suspended between a chain gear 19 fixed to a reducer 18 and a chain gear 20 fixed to the end of the drum 16), and a base. It consists of an annular projection 23.23' provided on both sides of the drum 16 placed on the table 3 and a roller 22.22' fitted into the annular projection 23.23'.

It goes without saying that the rollers 22, 22' are accurately attached to the base 3 and also serve to prevent eccentric rotation of the drum 16.

Next, the moving means C that moves the holding means A in the longitudinal direction is
A support frame 24 to which the electrode holding flange 6 is fixed and which is movable in the longitudinal direction on the pedestal 2 is attached to a chain gear 25.
26, and the chain gear 25 is driven by a motor 27 via a reducer 28. When the holding means A moves to the left in the figure, the main flange 5 The structure is such that inert gas is simultaneously ejected from gas ejection holes 37 provided along the inner periphery.

Next, the moving means C' moves the holding means A' in the longitudinal direction.
The support frame 29 is fixed to the support flange 13, and the support frame 29 can be moved in the longitudinal direction on the pedestal 2 manually or automatically.

The cantilever lifting means is constructed by connecting the piston rod 32 of a hydraulic cylinder 31 fixed on the foundation concrete 1 to one side of the base 3 on which the drum 16 is installed. Reference numeral 33 designates a receiving metal fitting that receives the weight of the drum 16 when the drum 16 is tilted together with the base 3, and a ball 34 is fitted onto the tip of the receiving metal fitting.

In this case, if the piston rod 32 becomes very long, the base 3 may be tilted by pulling the opposite side of the base 3 downward.

The operation will be explained below. First, the holding means A, A
' is moved to the position shown by the imaginary line by the moving means c and c' with the heating element 8 attached to the holding means A, and then the sample coke 35 is carried into the drum body 16' from the entrance. After that, the electrode holding flange 6 is moved by the moving means C to the position shown by the solid line.
When the heating element 8 is fixed to the main flange 5 with, for example, bolts, the heating element 8 is inserted and held horizontally at a central position in the longitudinal direction of the drum body 16'.

At this time, since the heating element 8 has a cylindrical body 10 pressed by a spring 9 fitted into its base, it comes into close contact with the electrode 19 without being deformed even if it is split into two.

Furthermore, when the holding means A is moved to the position shown by the imaginary line and the solid line, this moving means C is automatically stopped by a microswitch mediated by a starting circuit (not shown) of the drive motor 27. .

Next, after manually pushing the holding means A' by the moving means C' to the position shown by the solid line, the support flange 13 is fixed to the main flange 12 with bolts or the like, and the support 15 attached to the tip of the support flange 13 is inserted inside the tip of the heating element 8, so the heating element 8 is held extremely stably.

In this way, the inside of the drum body 16' is connected to the gas exhaust port 3.
After exhausting through the drum body 16', an inert gas such as nitrogen or argon is introduced into the drum body 16' through the gas inlet 39. Since the heating element 8 is divided into two parts in a spiral shape, heat is generated. The gas that has entered the interior of the body 8 enters the interior of the drum body 16' through the gap.

Further, gas generated from the sample passes through the gap and is exhausted from the gas exhaust port 38.

When the motor 1T is switched on before and after that, the driving force is transferred from the chain gear 19 to the drum 16 via the reducer 18.
The drum 16 is rotated around the outer periphery of the heating element 8.

In this case, the drum 16 has an annular projection 23 provided at both ends thereof.
23' are rollers 22, 22 installed at four points on the base 3.
' is supported by fitting with the drum 16
A backing 4L41' is provided between the main flanges 5 and 12.
is inserted, so that the drum 16 can be rotated confidentially around the heating element 8 without rolling.

On the other hand, if heating of the heating element 8 is started before or after this,
Since the heating element 8 is placed in an inert gas atmosphere, the temperature can be raised from 1500° C. to a maximum of 1800° C. very easily.

Then, since there are no side partitions between the sample coke 35 and the heating element 8, the sample coke 35 reaches 1500°C, the temperature it actually encounters in blast furnaces and cupolas.
It is heated to a temperature of about 100%.

The temperature inside the drum body 16' can also be measured with a thermocouple 30 housed inside the thermocouple protection tube 11 inserted inside the heating element 8, but if desired, the temperature inside the drum body 16' can be measured from the middle of the drum 16 to the drum body 16'. A thermocouple 43 could be installed and connected to the cold junction via a sliding ring on the side of the drum 16.

When the drum 16 rotates, the sample coke 35 is stirred by a protrusion 36 projecting inside the drum body 16'.

In this way, the drum 16 is heated for a desired unit time at an arbitrary temperature.
After rotating, stop the heating and rotation, and quickly remove the electrode holding flange 6 and support flange 1 from the main flanges 5 and 12.
3 is removed, and the holding means A is moved by the moving means C, and the holding means A' is moved by the moving means C' to the positions shown by the imaginary lines.

At that time, the members inserted into the drum body 16', such as the heating element 8, the heat insulator 14, and the support 15, have gas ejection holes 37, 37 provided on the inner periphery of the main flanges 5 and 12.
Since gases of the same type as those introduced into the drum body 16', such as nitrogen and argon, are ejected from the drum body 16', these members are drawn out of the drum 16 through a curtain of ejected inert gas.

Therefore, the above-mentioned members are cooled by this inert gas curtain and are therefore not oxidized by outside air.

Then, when fluid is injected into the cylinder 31 constituting the cantilevered lifting means and the piston 32 is pushed, the base 3 rotates around the pivot position and tilts each drum 16 to the position shown by the imaginary line. do.

Then, since the inner wall of the drum body 16' is constricted toward its outlet, the sample coke 35 automatically falls into the container 40 and is accommodated therein.

At this time, since the receiving metal fitting 33 supports the inclined drum 16, the base state of the annular projections 23, 23' provided at both ends of the drum 16 and the rollers 22, 22' is not deformed.

Furthermore, this receiving metal fitting 33 also functions to prevent the rotating drum 16 from swaying laterally.

As explained in detail above, according to the present invention, the holding means A, A, which fix the heating element in the horizontal direction and hold it in a dual-supported manner.
', and 7 driving means B for secretly rotating the drum containing the sample on the outer periphery of the heating element. Since the drum is provided with moving means C and C' for moving the drum in the longitudinal direction while blowing gas, and a cantilever upper means or cantilever lower means for tilting the drum in one direction, sample coke can be transferred to the blast furnace. It is possible to measure the strength and degree of abrasion by charging large lump coke under the temperature conditions actually encountered in a cupola and in the actual state of use. Since it is possible to automatically take out the sample coke outside in an extremely short period of time, it is also possible to measure the state of the sample coke immediately after that.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially sectional front view thereof. A, A'... Holding means, B... Drive means, C2C'... Moving means, D... Cantilever lifting means, 2... ... mount, 3... base,
4... Machine frame, 5, 12... Main flange, 6... Electrode holding flange, 7... Spring storage flange, 8...・Heating element, 13・
...Support flange, 16...Drum, 1
1...Motor, 18...Reducer, 19
, 20... Chain gear, 21... Chain, 22, 22'... Roller, 23° 23'.
...Annular projection, 24, 29...Support frame,
25.26...Chain gear, 21...Motor 28...Reducer, 31...Hydraulic cylinder 32...Piston rod, 33 ...
...Bracket, 35...Sample coke, 4L4
1'...Ground backing.

Claims (1)

[Claims] 1 Holding means A, A' for fixing the heating element in a horizontal direction and holding it in a dual-supported manner; driving means B for secretly rotating the drum containing materials on the outer periphery of the heating element; and the holding means A; Moving means C, C' that moves the partner of A' in the longitudinal direction while blowing inert gas while holding the heating element on one side, and cantilevered top or cantilevered bottom that tilts the drum in one direction. A hot drum testing device characterized by comprising a means and a means.