RU213348U1 - DEVICE FOR REMOTE IGNITION OF THERMITE MIXTURE - Google Patents

Abstract

The utility model relates to the oil and gas transport industry and is intended for remote ignition of thermite compositions that weld electrochemical protection (ECP) leads to pipelines to protect them from corrosion. The body of the device consists of metal plates connected with rivets. The front plate of the housing is removable and forms the front panel of the receiver, on which the device on indicator, load on indicator, device on switch, cable connectors for connecting the battery charging cable and the crucible-form connection cable are mounted. The metal case of the device reliably protects the receiver unit and the built-in rechargeable battery placed in it from possible damage by a burning thermal mixture, as well as from the effects of precipitation. 2 ill.

Description

The utility model relates to the oil and gas transport industry and is intended for remote ignition of thermite compositions that weld electrochemical protection (ECP) leads to pipelines to protect them from corrosion.

A device for igniting a thermite composition is known from the technical field [RU 2490104, IPC B23K 23/00, published on 20.08.2013]. The device is designed to ignite thermite compositions that weld electrochemical protection (ECP) leads to pipelines to protect them from corrosion. Initiation of the ignition of the incendiary thermite composition occurs with a remote (300 m) voltage supply.

A device for thermite welding of electrochemical protection leads to main pipelines [EN 2323075, IPC B23K 23/00, published on 27.04.2008] is the closest analogue. Remote ignition of the thermite composition is carried out at a distance of about 300 m, and according to industrial safety requirements, it is carried out by a radio-controlled device, which consists of a transmitter and a receiver, which requires a power source to operate.

In the course of work, the receiver of the device is located in close proximity to the place of welding, therefore, it is possible for a burning thermal mixture to get on the receiver case, made of plastic with ventilation holes, and its failure. The situation is complicated by the fact that the connector for connecting the battery charging cable and the connector for connecting the crucible-shaped cable, indicators for turning on the device and turning on the load.

In the course of work, the receiver of the device is located in close proximity to the place of welding, therefore, it is possible for a burning thermal mixture to get on the receiver case, made of plastic with ventilation holes, and its failure. The situation is complicated by the fact that the connector for connecting the battery charging cable is located on one (rear) panel of the receiver, and the rest of the controls and indications are on the other (front). In addition, the device is exposed to precipitation.

The technical task of the utility model is to create a simple and reliable device that allows remote ignition of the thermite mixture in the process of thermite welding of cathode-drainage outlets of electrochemical protection on existing main pipelines.

This problem is solved by the fact that in a device for remote ignition of a thermite mixture, containing a controlled built-in microcontroller, a radio receiver-switch, a built-in battery, a device switch, a connector for connecting a battery charging cable and a connector for connecting a crucible-shaped cable, indicators for turning on the device and turning on load, while all controls and indicators are located on the front panel of the case, and the case is made of metal.

A positive technical result provided by the disclosed set of features of the proposed device is to prevent the impact of the welding process in case of possible contact with a burning thermal mixture on the device by mounting the receiver unit and battery in a metal case, as well as placing controls, controls and cable entries on one panel of the case, which turns from the place of welding in the opposite direction.

The design of the device is illustrated by graphic materials.

In FIG. 1 is a photograph showing a general view of the device, FIG. 2 - layout of the device in the process of thermite welding of electrochemical protection leads on the pipeline.

The device for remote ignition of the thermite mixture contains a radio receiver-switch (hereinafter referred to as the receiver) controlled by a microcontroller. The body of the device 1 consists of metal plates connected with rivets 2. The front plate 3 of the body 1 is removable and forms a front panel on which the device on indicator 4, load on indicator 5, device on switch 6, cable connectors for connecting the battery charging cable 7 are mounted and cable 8 for connecting crucible-form 9. With the described installation, the indicators and cable connectors are located on one side of the device body, which makes it possible to position the device during welding in such a way that the front panel 3 of body 1 faces in the opposite direction from the crucible-form 9, in which the welding process is carried out, preventing the burning thermal mixture from entering the front panel 3 of the device, where the controls and indications are located. At the same time, the metal case 1 reliably protects the receiver unit and the built-in storage battery placed in it from possible damage by a burning thermal mixture, as well as from the effects of precipitation.

The proposed device is used as follows.

Before using the device, the built-in rechargeable battery is charged by connecting the charger through connector 7. A crucible-mold 9 is installed on the gas pipeline 10, at the place of work on cathodic welding. The cable 11 from the crucible-mold 9 is connected to the cable outlet 8 of the device. The switch for turning on the device 6 is transferred on the panel 3 to the “On” position. The worker performing the operations of welding the cathode leads to the gas pipeline moves away to a safe distance and by pressing the button "A" on the transmitter panel 12 initiates the supply of a power signal to the receiver unit of the device, which, through the cable outlet 8, cable 11, supplies current to the crucible-form 9, at the same time, the light signal of the control lamp 5 "Power on" is activated. The crucible-form 9 thermite mixture ignites. By pressing the “B” button on the transmitter panel 12, the signal to the receiver of the device is stopped, the power supply to the cable outlet 8 of the crucible-form is turned off, and the control lamp 5 “Power on” is turned off. The worker approaches the place where the cathode terminal is welded to the gas pipeline, switches the switch 6 of the device to the "Off" position, disconnects the cable outlet 8 of the device from the used crucible mold 9.

As a result of using the proposed device, a fast, high-quality and safe welding of the cathode terminal to the gas pipeline is ensured, preventing damage to the device components, in contrast to the analogue, in which the body of the devices for remote ignition of the thermite mixture is made of plastic with ventilation holes through which the burning thermal mixture during welding gets inside the device, causing failure.

The proposed device was tested on the Verkhnekazymsky linear production department of the main gas pipelines of the applicant. The device is easy to manufacture, securely closed from precipitation and burning thermal mixture during work. Due to its small dimensions, the device can be installed in any place convenient for the operating personnel.

Claims (1)

A device for remote ignition of the thermite mixture when welding leads of electrochemical protection against corrosion to main pipelines, characterized in that it contains a metal case in which a radio receiver-switch unit with an integrated control microcontroller is mounted, configured to receive a power signal from a transmitter and equipped with a connector for a cable a current supply output for ignition of the thermite mixture located in a crucible-form, a storage battery with a connector for connecting a battery charging cable, while the said connectors, an indicator for turning on the device, an indicator for supplying current load and a device switch are located on the front panel of the metal case.

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