CS251515B1 - Device for machining cylindrical surfaces and circumferential grooves of fittings and pressure vessels - Google Patents

Abstract

The device solves the processing of cylindrical surfaces of peripheral grooves and the removal of sealing welds from the parting planes of fittings and pressure vessels. The essence lies in the fact that grooves are formed in the guide flange, in which the wheels of the vertical guide of the travel console are placed, the wheels of the horizontal guide are placed on the upper guide surface and the lower guide surface, while a vertical slip is fixed on the travel console, which is terminated at the lower end with a flange for attaching the quill body with the drive unit, the cooling pump with the tank and the collector. The device can be used for removing sealing welds and processing bevels for re-welding of sealing flanges on fittings and pressure vessels, especially in the energy and chemical industries.

Description

The present invention provides a device for machining cylindrical surfaces, circumferential grooves, and sealing sealing seams from dividing planes of armatures and pressure vessels, when these are stably incorporated and operating, economic and technical conditions do not allow them to be transported to standard machine tools, such as in core repairs. power plants.

The methods used so far have consisted in the use of hand grinders that do not provide sufficient processing quality, simultaneous preparation of the edges during the stripping of the seals of the sealing welds between the lids and the bodies of the fittings and the pressure vessels. When grinding, the air in the workplace was polluted by the abrasive wheel and the scrap material as the hand grinders are not equipped with suction. The abraded material actively contains corrosive parts from contaminated surfaces, increasing the level of radioactive aerosols in the workplace. Hand grinders are only hand-held, which is physically strenuous.

The aforementioned drawbacks are eliminated by the portable device according to the invention, the principle of which is that grooves are provided in the guide flange, in which the wheels of the vertical guide of the travel bracket are mounted, the wheels of the horizontal guide are mounted on the upper guide surface and the lower guide flat flange; the travel bracket is fixed with a vertical pin, which is on the bottom icon terminated by a flange for attaching the sleeve body with the drive unit, pump cooling and collector.

By clamping the device with a guide flange and screws on the armature or cylindrical vessel, centering it on the surface to be machined, and machine machining, we will achieve substantial better surface quality than by manual grinding, a substantial reduction in heavy effort, reduced dust and active impurities in the air at the work place and at the same time, edges are formed in the machined groove for re-welding. The accompanying drawing illustrates structurally

Claims (5)

SUBJECT Apparatus for machining cylindrical surfaces and circumferential grooves of fittings and pressure vessels consisting of a guide flange, a trolley bracket, a special shaft, a quill with a spindle, a tank cooling pump and a drive unit, characterized in that grooves (7) are formed in the guide nature (1j). Fig. 1 shows a side view of the device mounted and mounted on the armature. 2 is a view of the device in the direction P of FIG. First On the guide flange 1, the travel bracket 2 is fixed by means of vertical guide wheels 6 and horizontal guide wheels 8. To reliably guide the bracket 2, grooves 7, an upper guide surface 9 and a lower guide surface 10 are formed on the guide flange 1, and a vertical pin is mounted on the travel console 2. 3. The vertical alignment of the vertical pin 3 is carried out by handwheel 19. The vertical pin 3 is terminated at the lower end by a flange 11, on which a pinolly body 12 is mounted, in which a quill with a spindle is mounted 4. Horizontal adjustment of the spindle 4 with the isa tool 17 is performed by the handwheel 18. Under the spindle 4 is arranged a collector 15 of tannins and cooling emulsion. In FIG. 2 shows the rectangular shape of the travel bracket 2, the location of the motor 16 with the displacement mechanism, the drive unit 13 and the cooling pump 5 with the tank 14. The device for machining cylindrical surfaces and circumferential grooves of fittings and pressure vessels works as follows: After the device according to FIG. 1, the spindle 4 with the tool 17 is moved by the handwheels 18 to the machined surface. Start the drive unit 13, eg. electric motor. Use the handwheel 18 to set the tool engagement depth 17 and start the motor 16 with the feed mechanism (for example with the friction wheel j). The travel bracket 2 moves along the spindle 4 along the circumference of the workpiece container. supplied by pump 5. The device according to the invention can be used in the maintenance and repair of main shut-off valves and pressure vessels in nuclear power plants, conventional power plants and the chemical industry, where the hermeticity of the devices on their separation planes is ensured by sealing welds.