SU1368053A1 - Arrangement for detecting the cleaning device moved inside the pipeline - Google Patents

Abstract

The invention relates to pipeline transport, can be used on main pipelines when cleaning them with pistons, and provides for an increase in the reliability of operation by preventing the NIN pipe from being drilled during movement of the device. The device has a housing with sealing cuffs, a cleaning unit, an alarm means with a drilling unit for holes in the pipeline, and a drill operation control unit including a time relay. The signaling means contains a radio transmitter, the output of which is connected to the drill. 6 hp f-ly, 3 ill.

Description

1: 0

O5

00

SP

00

The invention relates to pipeline transport and can be used on main pipelines when cleaning them with pistons.

The purpose of the invention is to increase the reliability of work.

Fig, f shows the proposed device in the pipeline, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows the node I in FIG. one .

Pipeline 1 houses the device case 2, which has sealing cuffs 3 at its ends. An alarm means is installed inside the case, which has an electric motor 4 connected to the shaft 6 by means of gear transmission 5.

Mounted with the possibility of axial re-blocking 25, the pads 25 are retracted from the wall of the displacement by means of a spring 7-. On the shaft there is a cam 8 cooperating with the latch 9 to prevent longitudinal movement of the shaft in the transport position. The shaft 6 is connected by a friction pair 10 with a drill 11, the tail part of which is filled with a dielectric insert 12. The drill is operated by differential thermocouples 13, spring loaded in the pipe wall by a spring 14. The cleaning unit is not shown.

Between the thermocouple and the pipe wall can be installed shoe 15. Differential thermocouples 13 are connected to the adder 16, the output of which is connected to the threshold node 1 7. The latter is connected to the control unit of the operation of the drill 18, which includes a time relay 19 and a drill operation switch 20, made, for example, in the form of an electromagnetic relay, to whose normally open contacts on one side are connected the leads of the electrical source 21, for example, an electric battery, and - the electric motor 4, the radio transmitter 22 and the solenoid 23 of the braking device.

To simplify the electrical circuit (Fig. 1), all the connections of the elements are shown in a single-wire version. The brake mechanism is made in the form of a lever 24 pivotally connected to the body, on the opposite end of which the brake shoe is fastened; 25, to the lever is pivotally connected a ha ha 26, which is connected with a sub-arm

If

80532

the vinous core of the solenoid 23. The output of the radio transmitter is connected to the drill 11. The hole in the housing of the device for the exit of the drill is made with a dielectric insert 27.

The device is introduced into the pipeline to be cleaned through the cleaning unit start-up chamber. The drill .1 is in a recessed state with a compressed spring 7 and is held in this position by a clamp 9, preventing longitudinal movement of the drill until the shaft 6 rotates. The electrical circuit of the device is open, so that the core of the solenoid 23 is spring-loaded in the extreme leftmost direction position and brake

pipelines 1. When the device is in the pipeline, the shoes 15 with differential thermocouples 13 are pressed against the pipe wall by springs 14. When the device moves through the pipeline, the potential difference caused by the temperature difference at the sp x; thermocouple input to the adder 16, the output of which

connected to a threshold node 17. The operation of the threshold node is programmed so that the arrival of a potential difference signal from at least one thermocouple provides a guarantee not

all device nodes trigger,

I

If the device is stopped, the signals from all thermocouples stop simultaneously, which triggers the threshold node

17 and a signal to the relay 19 time, after which it works. If within a specified period of time the cleaning device does not break down, the relay 19

time signal to the switch. work unit control operation of the drill. This closes the electrical circuit of the braking device, radio transmitter 22 and node 18

control drill operation. The core of the solenoid 23 moves to the right, pressing the brake pads 25 against the wall of the pipeline 1, thereby ensuring reliable fixation

devices in the pipeline. When the shaft 6 of the drill 11 is rotated from the electric motor 4, the cam 8 retracts the retainer 9 from engagement with the shaft 6, and the spring 7 feeds the drill 11 to the wall of the gas pipeline and provides a constant axial force during the drilling process.

After drilling a hole in the wall of the pipe 1, the drill 11 with the base of the cone-shaped dielectric insert 12 tightly closes the formed hole with the total force of the spring 7 and the internal pressure forces in the pipeline, which ensures reliable sealing of the drilling site and prevents leakage of the product being transported.

The drill 11, electrically isolated from the housing 2 of the device of the wall of the pipeline 1, and connected to the output of the radio transmitting device 22, is used as an antenna, the emitted radio signals of which can be received by mobile posts along the pipeline route. The capacity of the electrical power source 21 is selected based on the condition of ensuring the operation of the radio transmitter for a time that is guaranteed enough to accurately determine the stopping point of the device.

The use of the proposed device improves the performance of the device for detecting a cleaning projectile in the pipeline, since drilling of holes in the pipe wall occurs only when the device is stopped, and using a drill as an antenna of a radio transmitter allows you to determine where the cleaning projectile stops in the fog and in the rain no cloud can be detected. In addition, it is possible to use the proposed device in pipelines transporting liquid products,

t

Formula of invention

Claims (7)

1. A device for detecting a cleaning projectile in a pipeline, comprising sealing cuffs mounted on the housing and alarm means, made in the form of 0 five 0 five 0 five drills with a drive for its rotation and axial movement, and a control unit for its operation with a time relay, characterized in that, in order to increase the reliability of operation, it comprises a brake mechanism associated with the control unit for the operation of the drill, 2. The device according to claim 1, wherein the drill control unit contains a threshold node and a motion sensor in the form of a Differential thermocouple, one junction of which is spring-loaded to the pipe wall, and the other is inside the case, at the same time, the thermocouple is connected to the threshold node. 3. The device in accordance with claim 1, 1, and 2 tons, which is the fact that the body is sealed and the drill bit. with the drive of its rotation and axial movement is located between the sealing cuffs. 4. The device according to claim 1, which is the fact that the brake mechanism is made in the form of a lever with a brake pad at the end and an actuator connected to the lever by means of a pull. 5. The device according to claim 1, of which is that the signaling means comprise a radio transmitter, the output of which is connected to the drill, 6. The device according to paragraphs. 1-5, about. t - personalized by the fact that It was electrically insulated from the casing by means of a dielectric insert, made with a cone-shaped extension to improve the drilled hole in the pipe wall. 7. The device according to PP. 1 and 2, about t - the fact that the motion sensor is made in the form of three parallel-connected thermopes p connected to the threshold node via an adder " 2 FIG. Fig.Z