CS261678B1 - Alignment for locating and extracting foreign objects from pipes - Google Patents

Abstract

The device consists of a frame, pressure wheels, driving wheel, television camera, lamp, collector, electromagnet and drive unit. In the upper part of the frame there are two-lever pantographs with tension springs, on which pressure wheels are mounted, the circumference of which is provided with rollers. In the lower part of the frame at the rear there is a carrier with a drive unit, a driving wheel, the circumference of which is provided with rollers, to the frame in front there are firmly connected ball supports and a folding collector, the lower part of which has the shape of a sector of the internal shape of the pipe, which is mounted pivotably on the carrier. The drive counterweight is attached to the drive unit, so that the center of gravity of the device is under the axis of the pipe.

Description

261678

The present invention provides a device for locating and extracting foreign objects from a pipeline that is difficult to access due to radioactive infestation or contamination by various chemical and poisonous substances. When repairing equipment connected to these pipes, foreign objects fall, which cannot remain in the pipeline from the point of view of the operation of the production equipment, where the pipeline is connected.

Until now, the methods of pull-out articles used have been the use of hand-held manipulators. Magnets are permanently used for magnetic materials, fixed on rods. When these aids can be pulled out, the necessary pipe to be cleaned (decontaminated) to a level such that it can be triggered into the potruibium for under-age measures. There is always a high risk of health threats. A further disadvantage of the previously used methods of pulling foreign objects from pipe is a cumbersome preparation, especially for pipe cleaning. A handheld manipulator searches for a foreign object boldly and blindly.

The above drawbacks are avoided by using a device for drawing foreign objects from a pipe, the principle of which is that the upper part of the frame is fitted with heavy-duty double-bladed pantographs, the pressure wheels mounted thereon, which are provided with rollers. In the lower frame frame, there is a carrier with a drive unit, a drive wheel, whose circumference is provided with rollers, a rigidly attached ball support and a hinged collector, the lower part of which has the shape of a protrusion of the inner shape. a pipe which is pivotally mounted on the collector. A counterweight is attached to the drive unit, the center of gravity of the device being below the pipe axis.

This device can also be used to check that there are no foreign objects in the pipeline. Such inspections are prescribed at the time of completion of repair of engineering equipment connected to the pipeline, especially in nuclear power plants. The attached drawing illustrates the construction of the device. Figures 1 and 2 represent the device in the duct in the working position, the pantograph 7 being lowered to the bottom of the duct. The device consists of a frame 1, a television camera 5, two thrust wheels 2, located at the end of the double-lever pantograms 9, which are actuated by a tension spring 10. The thrust wheels 2 are located by an overhead wheel 3 and above the ball supports 13, the pressure of the drive wheel 3 and the ball supports 13 on the pipe. The drive unit 4 and the drive wheel 3 provide a forward and backward movement of the device in the duct. A counterweight 15 of the drive is mounted on the drive unit 4. The self-aligning of the device during insertion and working in the duct is achieved by the pressure wheels 2 and the wheel 3 being circumferentially provided with rotating rollers 11 and receiving the heavier parts of the device collector 7, drive unit 4, counterweight 15 of the drive at the bottom of the frame 1, thereby the center of gravity the entire plant is below the pipe axis. Searching for the body in the duct is performed by a television camera 5 which is connected to a monitor placed on a damping machine. The lowering of the collector 7 on the collector 7 is pivoted to copy the unevenness at the bottom of the conduit. Also, the twin-leverantograph 9 eliminates the greater unevenness in the pipeline. FIG. 2 shows the device in the direction P of FIG. 1, where it is possible to see the shape 1, the collector 7 and its lower part 14, the mounting of the guillar supports 13 and the drive unit. 4 with counterweight 15 of the drive.

Pipe Removal Equipment works as follows:

Connect the device with a steel roller 18 with a winch. Connect the cable 17 to the connector 8, which is on the device frame, to switch the device with the power supply for the power unit 4, the light 8, the television camera 5 and the electromagnet 16. Connect the television camera to the monitor. 18 and winch. After entering the pipeline, let the power unit 4 start, the light 6 and the camera 5 and the cable 18 leave the winch to unwind. To determine the position of the foreign object, guide the device over the foreign object, turn on the electromagnet, which unlocks the collector 7 and the actual weight, and uses a spring to lower the working position. Turn on the wrong wheelchair and slowly start winding the wheel with the winch. The collector pushes a foreign pred-met ahead. Upon passage of the pipe, the object which is in front of the collector is folded into the collector 7. After the knee has passed, when the apparatus is in a vertical position, the drive is switched off and the further pulling is carried out manually by a winch.

The device according to the invention can be used in both core and conventional power plants, chemical industry and gas industry.

Claims (3)

OBJECT OF THE INVENTION Device for searching for and removing foreign objects from a pipeline, consisting of a frame, pressure wheels, drive wheel, television camera, lamp, pantograph, electromagnet and drive unit, characterized in that two-lever pantographs are located in the upper part of the frame (1) with a tension spring (10) on which the pressure wheels (2) are mounted, the circumference of which is provided with rollers (11). Stage device according to Claim 1, characterized in that at the rear of the frame (1), at the rear, there is a carrier (12 js) with a drive unit (4), a drive wheel (3) whose circumference is provided with rollers (11). 1) the ball supports (13) and the tilting header (7) are fixedly connected at the front, the lower part (14) of which has the shape of a segment of the inner pipe, which is pivoted on the header (7). Device according to Claim 1, characterized in that a counterweight (15) of the actuator is attached to the drive unit (4).