SU1232896A1 - Arrangement for deslagging tap-hole - Google Patents

Description

The invention relates to boiler technology, in particular, to the construction of devices for the slagging of tap-holes, and can be used in the power engineering industry for the slagging of the tap-hole of boilers mainly with liquid slagging.

The purpose of the invention is to improve the efficiency and efficiency of slagging.

Figure 1 is a schematic diagram of the proposed Device; figure 2 - And figure 1.

The device for the flaking of the tap-hole consists of a blower pipe 15 including links 2 and 3, soy, augmented by a ball joint with a spherical hinge A. Link 3 is mounted on support 6 by means of a water support hinge 5. additionally outer tube 7 with the formation between them tight the cavity of St. An additional pipe 7 is mounted for axial movement in a detachable holder 9, which is hinged on support 10. At the free end of link 2 of the blower pipe 1, a shank 11 is fixed at an angle to its longitudinal axis, on KOTOpiJM there is additionally a protrusion i 2 with an annular groove 13, forming with the main surface of the shank two landing surfaces of different diameters, on which the nozzle head 14 is mounted with clamps 15 16 of different diameters, forming with the shank 11 a chamber 17 of the working flow and a chamber 18 of the flow control Neither the chamber 17 of the working flow through the channel 19 in the nozzle head 14 communicates with the cavities of the working nozzles 20 and the chamber 18 of the control flow through the Tubes 21 and 22 -. respectively, with the cavities of the jet nozzles 23 and the cavity 8, the working nozzles 20 are installed at an angle to the axis of rotation of the nozzle head 14 in a plane parallel to the longitudinal axis of the nozzle head 14 (Fig. 2). The jet nozzles 23 are installed perpendicular to the axis of rotation of the nozzle head 14 in a plane parallel to this axis (Fig. 1)

A hydraulic pulsator containing a hydraulic-pneumatic accumulator 24, a shock pipeline (water supply line) consisting of section 25 of the larger one and section 26 of smaller diameters, and an oscillator 27 of oscillations with a piston-valve 28 and a discharge pipe 29 installed

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between these sites. The discharge pipe 29 is communicated through the adjusting valve 30 and the flexible hose 31 with the cavity 8 of the blowing pipe 1 and then with the cavity of the jet nozzles 23.

The supports 6 and 10 are fixed on a single platform. The change in angle between the links 2 and 3 of the blowing pipe 1 is carried out by means of a hydraulic cylinder 32. When the nozzle is in the working position, the head 14 is connected by means of a hydraulic cylinder 32 through the hatch into the inside of the telescopic pipe 33 of the boiler and is located under the gateway 34. The device is equipped with a control panel (not shown) from which the hydraulic cylinder 32 is controlled and the oscillator 27 of the hydraulic pulsator is controlled.

The device works as follows.

All elements of the device are mounted at the zero level in the boiler room, and the supports 6 and 10 are fixed in such a way that the nozzle head 14 is outside the telescopic pipe 33 of the boiler when the device is not in working position when the hinge 4 is in the extreme right position. When it becomes necessary to rasklakovki tap-holes 34 from the console, the nozzle head 14 is introduced by means of a hydraulic cylinder 32 into the cavity of the telescopic pipe 33 of the boiler and the supply of technical water to the hydraulic impulse from the pump. At the same time, the hydraulic impulse on} turns into self-oscillation mode. The piston-valve 28 of the oscillator 27 alternately takes extreme positions, as a result of which a shock wave pressure and a low pressure shock wave (low and high pressure oscillations phase) propagate in the shock section 25 of the larger diameter pipeline and oscillator 27: ). During the high phase, the piston-valve 28 occupies the right extreme position, pipeline sections 25 and 26 hydraulically communicate with each other, water flow under overpressure, passage through pipeline section 26, hinge 5, link 3, hinge 4 and link 2, fills the chamber 17, through the channels 19 enters the cavity of the working nozzle 20 and, having flowed out of it in the form of a high-pressure pulse, acts on the slag deposits of the notch 34.

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During the low phase of oscillation of the water flow in the shock section 25 of the pipeline with a larger diameter, the piston-valve 28 of the generator 27 of the oscillations occupies the leftmost position. The hydraulic connection between sections 25 and 26 of the percussion pipeline is terminated, and water from the section 25 of the pipeline under pressure is exhausted through the discharge port 29%. At the same time, part of the water through valve 30 and flexible sleeve 31 enters the cavity 8 between the inner and outer pipes of the link 2 It passes through the tubes 22 into the collapsible chamber 18 and from there through the tubes 21 into the cavity of the jet nozzles 23, has elapsed from the latter in the form of impulses of reduced pressure. As a result of this outflow, a moment of forces arises that turns the nozzle head 14 through a certain angle. The high and low phases of the operation of the hydro-pulsator alternate, with the duration of the low phase several times longer than the high. In the high phase of the nozzle, the head 14 remains stationary, rotates in the low phase, and the next high-pressure impulse of water emanating from the working nozzles 20 affects the new area of slag deposits. The device continues operation.

If it becomes necessary to reduce the speed of rotation of the nozzle head 14 or stop it completely against a certain area of slag from the sediments of the tap hole 34, it is necessary either partially or completely to shut off the valve 30.

After the completion of the slagging, a hydraulic impulse. is removed from the self-oscillation mode (the entire flow passes through the discharge pipe 29. Then the access of water to the hydro-impedance system through the cylinder 32 of the blower 1 together

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with the nozzle head 14, it is removed from the telescopic tube 33, the hatch on it is closed. the device is reset. Depending on the conditions of use, one or two working and jet nozzles can be installed.

The proposed device is characterized by an increased efficiency achieved by

10 due to the fact that the working nozzles are set at an angle to the axis of rotation of the horizontal head, not in the plane perpendicular to the longitudinal axis of the nozzle head, but in a plane parallel to

) 5 to her. This ensures the preservation of the required processing area of the tap-hole (as with the known device) while eliminating the use of a working impulse to rotate the nozzle head.

Q its power is used to destroy the slag, and to rotate the nozzle head, a waste stream of a hydraulic pulsator is used (in a known device it is dumped without useful

5 uses in a hydraulic ash channel). This increases the efficiency of slagging, which is ensured by the fact that when the high-pressure impulse leaves the working nozzle

The nozzle head remains stationary, which eliminates the demolition of the jet and its indirect impact on the slag, as well as the fact that the rotation speed of the nozzle head (in the absence of a working impulse) is adjustable, i.e. it is possible to provide impulses blows to slag with a certain step.

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All this is ensured by the communication of the cavity of the jet head with the discharge pipe of the oscillator through the adjusting valve, and the working heads are installed at an angle to the axis of rotation in the cavity parallel to the longitudinal axis of the nozzle head.

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VNIIPI Order 2754/38 Tirgik 514Subscription

; Free-poly. dr-tie, Uzhgorod, ul "Project, 4

Claims (1)

DEVICE FOR LAYOUT LAYOUT OF A LETTER, mainly boilers with liquid slag removal, containing a blowing pipe made in the form of an articulated two-link, each link of which is mounted on supports of different heights, a rotating nozzle head with jet nozzles, a movement mechanism for the blowing pipe and a water supply line, with a built-in a pressure transducer made in the form of a hydraulic pulse with an oscillation generator, characterized in that, in order to increase the efficiency and the efficiency of raslakovka, the nozzle head additionally with abzhena by working nozzles and made with a working flow chamber communicated with the cavities of the working nozzles, and a control flow chamber connected to the cavities of the jet nozzles, the latter communicating with the discharge pipe of the oscillation generator, and the working nozzles are installed at an angle to the axis of rotation in a plane parallel to the longitudinal axis of the nozzle head.