CS251515B1 - Equipment for fittings' and pressure vessels' cylindrical surfaces and circumferential grooves machining - Google Patents

Abstract

The device solves cylindrical machining of the circumferential grooves and the removal of the sealing zvariv from the dividing planes of valves a pressure vessels. The essence is that in the guide the flange is formed by grooves in which they are stored wheels, to the vertical guide of the console trolley, wheels of horizonal conduit are placed on the upper guide flat and the bottom-guide; The slip is fixed by a vertical slip that is at the bottom-to-end end with flange for attachment of quill bodies with drive unit cooling pump with tank and collector. The device can be used for stripping sealing welds and bevelling for careful sealing of sealing flanges on fittings and pressure vessels, especially in the environment and chemical industry.

Description

The present invention provides a device for working cylindrical panels, circumferential grooves and sealing sealing seams from armalure and pressure vessel separation planes. these are stably installed and operational, economic and technical conditions do not allow their transport to standard machine tools, as is the case, for example, in nuclear power plant repairs.

The processes used hitherto consisted in the use of hand grinders, which do not provide sufficient processing quality, simultaneous preparation of edges in the oiperation by removing the sealing welds between the lids and bodies of the fittings and pressure vessels. During the grinding process, air pollution at the workplace was effected by the grinding wheel and the abraded material, since the grinders are not equipped with suction. The abrasive material contains actively corrosive portions of contaminated surfaces that increased the level of radioactive aerosols in the workplace. To engage the stick hand grinders guided only by hands, which is physically strenuous.

The above-mentioned drawbacks are eliminated by the portable device according to the invention, which is based on the fact that grooves are formed in the guide flange, in which the wheels of the vertical guide of the travel console are mounted, the horizontal guide wheels are supported on the upper guide flat and lower guide flat flanges. a vertical pin is fixed, which is terminated at the lower end by a flange for attaching the quill body with the drive unit, the cooling pump and the collector.

By clamping the device with a guide flange and screws on a fitting or cylindrical vessel, centering on the surface to be machined and machined, we achieve a significantly better surface quality than by hand grinding, a substantial reduction in human effort, a reduction in dust and active air contamination at the workplace and at the same time edges are formed in the machined groove for careful welding.

The attached drawing shows the construction

Claims (5)

PREDMET Device for machining cylindrical surfaces and circumferential grooves of fittings and pressure vessels consisting of a guide flange, a travel bracket, a vertical splitter, a spindle sleeve, a pump cooling tank and a drive unit, characterized in that grooves are formed in the guide flange (lj) Fig. 7), in which the collar (6), the vertical guidance of the travel bracket (2), the arrangement of the device are accommodated, Fig. 1 is a side view of the device mounted and mounted on the valve. 2 is a view of the device in the direction P of FIG. 1. On the guide flange 1, a travel bracket 2 is fixed by means of the wheels 6 of the vertical guide and the guide 8 of the horizontal guide. For reliable guidance of the bracket 2, grooves 7, an upper guiding surface 9 and a lower guiding surface 10 are provided on the guide flange 1. 3. Vertical adjustment of vertical pin 3 is performed by hand wheel 19 · Vertical pin 3 is terminated at the lower end by flange 11, on which is mounted pinoil body 12, in which the spindle with spindle is mounted 4. Adjusting the spindle 4 horizontally with the tool 17 is done by the handwheel 18. Under the spindle 4 there is a trickle collector 15 and a cooling emulsion. Fig. 2 shows the rectangular shape of the travel bracket 2, the positioning of the drive mechanism 16 with the drive mechanism, the drive unit 13 and the cooling pump 5 with the tank 14. The device for machining the cylindrical flanges and the circumferential grooves of the fittings and the pressure vessels operates as follows: 1, the spindle 4 with the tool 17 is brought by handwheels 18 to the machined surface. Let's start drive unit 13, eg electric motor. Adjust the depth of engagement of the tool 17 with the handwheel 18 and move the motor 16 with the feed mechanism (for example, with the friction wheel j. The traversing wheel 2 moves along with the spindle 4 along the circumference of the workpiece, the mat. supplied by the pump 5. The device according to the invention can be used for the maintenance and repair of main shut-off valves and pressure vessels in core power plants, conventional power plants and the chemical industry, where the sealing of the devices on the light dividing planes is provided by a sealing weld. BACKGROUND OF THE INVENTION The horizontal guide wheels (8) are mounted on an upper guide flat (9) and a lower guide flat (10) flange (1), and a vertical pin (3) is fastened to the travel bracket (2). (lij for fixing the sleeve body (12) with the drive unit (13), the pump (5) cooling with the tank (14) and the collector (15). 1 sheet of drawings 251515 126768 fig.l ✓ · \ t Fig. 2 ------------------- "---: -------------. v -------- -------