SU1041629A1 - Apparatus for monitoring the process of conveying through pipelines - Google Patents

Abstract

1. A DEVICE FOR CONTROLLING THE PROCESS OF LIQUID TRANSPORTATION IN PIPELINES, including a pressure sensor connected to an automatic control station, valves placed at the ends of the pipeline section to be installed, the pump for pumping liquid from the pipeline is characterized in that, in order to prevent contamination, there is water. in the event of an accident when pumping oil or petroleum products through pipelines, the device is equipped with a buffer tank connected to the inlet branch of the pipeline and the sump tank is connected A pipeline with an outlet of the pump, the inlet of which is connected to the controlled section of the pipeline. 2. The device according to Claim 1, about 1 tl, which is such that, in order to eliminate the pressure in the pipeline, which supplies oil to the controlled section, the section for connecting the buffer capacity to the supply branch of the pipeline is supplied with an electrical (L valve).

Description

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The invention relates to apparatuses designed to protect ponds from being contaminated by oil products when they leak from pipelines running along the bottom. A device for protecting navigable rivers from oil pollution from depressurized pipelines, including a pipeline and installed across the river, downstream of the pipeline, a barrier made in the form of elastic shells submerged in the inoperative position is known. At. a pressure decrease in the pipeline that occurs when the seal fails, the pressure sensor emits a signal and, through an automation system, turns on a compressor that supplies compressed air to the envelopes, which, floating, form a barrier on the surface of the river, preventing the distribution of oil products along the river i. However, this device does not stop the supply of oil to the reservoir, but only prevents it from spreading with the flow, which is possible only with little agitation. With a long stay at the bottom of the river, it is silted up, and in reservoirs without a current it cannot be used. In addition, the device does not exclude the operation of collecting oil products from the surface of the river, which requires special additional devices. Moreover, at the time of floating, navigation on the river ceases and does not damage the septum damage to the vessels at the time of floating. 1 It is also known a device for monitoring the process of transporting bones in pipelines, including a pressure switch connected to an automatic control station, for sliders placed at the ends of the controlled section of the pipeline and a pump for pumping fluid from pipeline 2. . However, this device does not provide, in the event of an accident at the pipeline section passing through the reservoir, when oil is pumped therein, the pressure in it is lower than the water pressure in the reservoir and, thus, does not prevent the oil from pouring into the reservoir. The purpose of the invention is to prevent contamination of water bodies in the event of an accident during pumping through pipelines of oil or oil products. This goal is achieved in that the device is provided with a buffer tank connected to the inlet branch of the pipeline and a tank sump connected to the outlet of the pump, the inlet of which is connected to. controlled section of the pipeline. In addition, in order to eliminate the increase in pressure in the pipeline, which supplies oil to the controlled section, the connection section of the buffer tank with the inlet branch of the pipeline is equipped with an electric valve. The drawing shows a longitudinal section through a section of the pipeline laid under the bottom of the reservoir. The device consists of a pressure sensor 1 installed within the controlled section of the subsea branch of the pipeline of the automatic control station 2; . electrocontrolled valves 3 and 4, located at the ends of the monitored pipeline section and cutting off the subsea branch of the pipeline from the inlet and outlet of the petroleum product branches of the aboveground pipeline. i On the inlet branch of the pipeline in front of the shut-off valve 4, a pipeline is inserted with an electrically controlled valve 5 connected to a buffer tank 6. On the underwater branch of the pipeline there is a pipeline with an electrically controlled valve 7 connecting the underwater branch of the pipeline with the vacuum pipe of the pump 8 and a settling tank 9, connected to the outlet pipe of the pump 8 and having a fitting for draining the water 10, and a pipe 11 connecting it to the main pipeline. The device works as follows. When a leakage occurs within the monitored section of the subsea branch of the main pipeline, the pressure in it decreases and the pressure sensor 1 sends a signal to the automatic control station, which supplies the electric leakage to the electric drive of the device control system. And thus closes valves 3 and 4, the underwater branch compartment the pipeline from the surface pipelines, and opens the valve 5 connecting the main pipeline to the buffer tank 6 in order to prevent the increase in pressure in the pipeline. At the same time, the valve 7 is opened, the pump 8 is turned on and the oil product is pumped out of the isolated subsea branch of the pipeline to the settling tank 9, maintaining a predetermined pressure in the underwater branch, which is less than the hydrostatic pressure of water at the pipeline level.

At the same time, water enters the oil product, which, after settling in the sump 9, is drained, and the dehydrated oil product enters the pipeline through pipe 11.

After the leakage is eliminated, the oil product is pumped through the subsea branch until the water is completely removed from it and is collected in a sump where water is removed. After;

This closes the valves 5 and 7, turns off the pump, and the oil product is transported through the main pipeline.

The application of the invention makes it possible to increase the effectiveness of protecting reservoirs from pollution when laying pipelines with oil under the bottom of reservoirs.

Claims (2)

1. DEVICE FOR CONTROL OF THE LIQUID TRANSPORTATION PROCESS IN PIPELINES, including a pressure sensor connected to an automatic control station, valves located at the ends of the controlled section of the pipeline and a pump for pumping liquid from the pipeline, characterized in that, in order to prevent pollution of water bodies in the event of an accident when pumping oil or oil products through pipelines, the device is equipped with a buffer tank associated with the supply branch of the pipeline and a settling tank connected by pipes a wire with an outlet pipe of the pump, the inlet of which is connected to a controlled section of the pipeline. 2. The device according to claim 1, characterized in that, in order to exclude pressure in the pipeline supplying oil to the controlled area, the connection section of the buffer tank with the supply branch of the pipeline is equipped with an electric valve. s