RU106850U1 - DEVICE FOR APPLICATION OF INSULATING COATINGS ON THE INTERNAL SURFACE OF A PIPE - Google Patents

Abstract

 A device for applying insulating coatings on the inner surface of a pipe containing a discharge and filling column, a filling pump, a valve and a drain valve, a sensor for the level of coating material in the pipe, a microprocessor-based processing and control device, the output of which is connected to the input of an electric drive mechanically connected to the drain valve, characterized the fact that a pump control unit is introduced into the device, the input of which is connected to the output of the microprocessor processing and control device, and the output is connected to the filling suck.

Description

The utility model relates to devices for applying insulating coatings to the inner surface of a pipe, providing a high degree of uniformity of the thickness of the coating material along the entire length of the pipe and at its edges.

Known devices in which the coating is carried out by spraying from a nozzle moving relative to the pipe, followed by drying and annealing of enamel in inductors or slot furnaces (analogues of RU 2305011 C2 B05C 7/08, B05D 7/22 from 07.11.2005; RU 2315668 C1 B05C 7/08 dated 06/05/2006; RU 2338603 C1 B05C 7/08 dated 05/08/2007; RU 2340408 C2 B05C 7/08, B05C 7/08 dated 10/17/2006; RU 2311966 C1 B05C 7 / 08 June 05, 2006).

The disadvantages of analogues include the uneven spraying of the coating material using nozzles, as well as their rapid clogging in the case of viscous liquids.

The prototype is a device (RU 96793 U1 B05C 7/08 from 08/20/2010), which contains a discharge and filling column, a filling pump, valve, drain valve, a sensor for the level of coating material in the pipe, a microprocessor-based processing and control device, an electric drive drain gate valves. The coating is carried out by filling the internal cavity by pumping the applied material into the pipe, followed by swelling of its excess, drying and annealing.

The disadvantage of the prototype is that in the process of filling the pipe there is an overflow of coating material. This leads to its cost overruns, pollution of the workplace, decrease in labor productivity. Underfilling of the material leads to uneven coating on the upper boundary of the pipe.

The task is: to ensure accurate filling of the pipe along the edge of the cut without overflow and to expand the range of uniformity of coating along the length of the pipe.

The solution to this problem is achieved by the fact that in the device for applying insulating coatings on the inner surface of the pipe containing a discharge and filling column, a filling pump, a valve, a drain valve, a sensor for the level of coating material in the pipe, a microprocessor processing and control device, an electric drive of the drain valve, a block is introduced control the pump, the input of which is connected to the output of the microprocessor processing and control device, and the output is connected to the pump filling the pipe.

The device provides full filling of the pipe without overflow and its uniform discharge.

The essence of the utility model is illustrated in figure 1.

The processed pipe 1 is mounted vertically on a discharge column 2, to which a filling pump 3 with a shut-off valve 4, a level sensor for coating material 5, the output of which is connected to a filling pump and a microprocessor processing and control device 6, the output of which is connected to the input of the electric drive 7, is connected mechanically connected to the drain valve 8, the pump control unit 9, the input of which is connected to a microprocessor processing and control device 6, and the output to the filling pump 3.

Before starting the coating process through valve 4 with the help of pump 3, coating material is pumped into the pipe, then valve 4 is closed and the applied material is drained through the drain valve 8. Using the level sensor 5, the current value of the coating material level in the pipe is measured. The signal about the current height of the coating material in the pipe comes from the level sensor 5 to the microprocessor processing and control device 6, which generates a control signal for the pump control unit 9, which, controlling the pump capacity, ensures smooth filling of the pipe, which prevents overflow and guarantees filling to the upper limit pipes.

The coating is carried out by draining the insulating material. On command from the microprocessor processing and control device 6, the electromechanical actuator 7 gradually opens the valve 8, aimed at compensating for the decrease in pressure at the base of the drain column and stabilizing the flow rate of the material. The installation automatically maintains uniform movement of the coating material through the drain column, which in turn ensures uniform coating film thickness on the inside of the pipe.

The proposed design is free from the disadvantages of the prototype. In addition to improving the uniformity of applying an insulating coating on the inner surface of the pipe, this installation allows you to ensure uniformity of coating on the edges of the pipe and to prevent overflow of the applied material. Also, there is no need to place staff in the immediate vicinity of the drain column.

If necessary, the speed of movement of the coating material can be controlled according to a predetermined program, thereby forming the required coating thickness in different sections of the pipe.

Claims (1)

A device for applying insulating coatings on the inner surface of a pipe containing a discharge and filling column, a filling pump, a valve and a drain valve, a sensor for the level of coating material in the pipe, a microprocessor-based processing and control device, the output of which is connected to the input of an electric drive mechanically connected to the drain valve, characterized the fact that a pump control unit is introduced into the device, the input of which is connected to the output of the microprocessor processing and control device, and the output is connected to the filling suck.