SU725724A1 - Apparatus for ultrasonic contact-cleaning of long articles - Google Patents

Description

I

The invention relates to the technological name of ultrasound, namely, devices for contact cleaning of internal and external surfaces of lengthy articles such as pipes and pipelines from scale, rust and oxide films, and can be used in all parts of the national economy.

A device for ultrasonic cleaning of pipes, made in the form of a clamp with ultrasonic transducers placed on it, having radial and yf-lovy movement about axis 1, is known.

The disadvantage of this device is the limited possibility of its use for cleaning pipelines located near walls, supports and other structural elements. The second drawback is the need to have special inserts for the tube size (for the pipe size) to ensure acoustic contact.

It is also known a device for ultrasonic contact cleaning of pipes using a waveguide system, containing a magnetic-striction transducer with a tool and rigidly connected with a pneumatic clamp and a half-wave support with a tubular bracket 2.

A disadvantage of the known device is the difficulty of treating extended pipelines, since the half-wave active support in the form of a half-wave or quarter-wave rod, in which is used in the device. rum spread longitudinal vibrations.

Such a support structure is inconvenient for ultrasonic treatment of extended pipelines, since it reduces the maneuverability of the device when it is necessary to repeatedly move the device along the pipe.

The purpose of the invention is to increase productivity and improve maneuverability of the device.

Claims (1)

The purpose of the invention is achieved by the fact that in the device for ultrasonic contact cleaning of long products containing a magnetic-striction transducer and acoustic support located opposite the radiating end of the transducer from the opposite side relative to the product being cleaned, the acoustic support is made in the form of a hollow cylindrical element whose axis is perpendicular to the axis the processed product, 3 the length of its average circumference is equal to the integer number of waves excited in the support. Performing an acoustic support in the form of a log of a cylindrical element, while retaining all the physical advantages of an active hole, improves the maneuverability of the device, since it also performs the functions of a roller element (rolling element) when moving the device along the cable line. FIG. 1 shows a device as a section; in fig. 2 - view A of FIG. one; in fig. 3 diagrams of the distribution of bending vibrations on the support. The device comprises a housing 1 (Fig. 1), in which an internal magnetic cavity, a converter 2 with an instrument 3 provided with a cradle, is embedded in the internal cavity. The internal cavity 5 of the housing is filled with a cooling liquid, for example freon. A heat exchanger 6 is mounted on the outer surface of the housing. In the lugs 7, the housing is fitted with a support plate 8, in the trunnion 9 of which an acoustic support 12 is fitted with an sleeve 11 on the eccentric roller 10 (Fig. 2). The acoustic support (Fig. 3) is calculated by the formula n 1,2,3 ... - the length of the bending wave of the material of the opara. Refilling the body of the coolant through the filling hole with the plug 13 (Fig. 1). The adjustment of the device for the cleaning of pipes of known diameter is carried out with a adjusting screw 14 on the limb. The device is operated as follows. By the lever 15, the device by means of an eccentric roller 10 and. acoustic support 1 on the one hand and supplied with the lodgement 3 of the tool 4 on the other side is attached to the section of the pipe 16 to be cleaned, after which the toggle switch 17 turns on the ultrasonic waves that process; 4 pipes. The freon formed during the operation on the map-striction converter 2 is removed by heat. After passing through the opening 18, the flowed vapor phase penetrates into the tubular heat exchanger 6, condenses and returns to the internal cavity of the housing 1 through the opening 19. In the following, the cycle is repeated. The present invention has the technical and economic advantages over the prior devices. The presence of an acoustic support, made in the form of a hollow cylindrical element, makes it possible to reduce the laboriousness of manufacturing the device structures, increase maneuverability and increase the efficiency of the device. as well as apply closed liquid cooling of the device without connecting to external communications, which is very important when cleaning the spatially tubular structures in field conditions. Apparatus of the Invention A device for ultrasonic contact cleaning of long products containing a magnetic-striction transducer and an acoustic support opposite the emitting end of the transducer from the opposite side relative to the product being cleaned, characterized in that as a hollow cylindrical element, the axis of which is perpendicular to the axis of the workpiece, and the length of the average circumference it is equal to the integer number of waves excited in the support. Sources of information, take into account in the examination 1. The use of ultrasound in metallurgy. Scientific works, No. 80. M., Metallurgists, 1977. 2. Author's Certificate of the USSR No. 462620, cl. In 08B, 1972.