RU208112U1 - DEVICE FOR VISUAL DETERMINATION OF OIL AND WATER LEVELS IN TANKS USING MEASURING RULES - Google Patents

Abstract

The proposed utility model "Device for visual determination of oil and water levels in tanks using measuring rulers" refers to the means for determining the liquid level and can be used in the oil industry. The utility model includes a technological hatch, roller devices, metal rulers with plates that are connected at the help of metal cables with cylinders. Cylinders are designed to determine the levels of water and oil in the tank. In this case, the masses of the cylinders are selected taking into account the densities of oil and water. The plate is placed on a metal measuring ruler with the possibility of vertical movement. The ruler is attached to the tank using metal corners. The technical result is achieved by visually determining the levels of water and oil in the tank using plates that move along the metal measuring rulers using cables and roller devices, depending on the position of the cylinders in the tank. At the same time, measuring rulers with plates are located on one side of the tank, cylinders with cables are installed in one technological hatch, and the roller device consists of two wheels. .

Description

The proposed utility model relates to measuring technology, in particular to means for determining the level of a liquid, and can be used in the oil industry to determine the level and amount of oil and produced water in tanks intended for receiving, storing and dispensing crude oil and other high-viscosity oil products.

Crude oil contains water and dissolved gas. Oil water cut in some fields ranges from 5 to 70 percent.

Known reservoir for storage, delivery and separation of crude oil from water [Elansky IA, Matveev YU.A. utility model patent No. 62909 dated 05/10/2007].

The technical solution is achieved by the fact that dispensing pipes, siphon taps and a drainage pipe are additionally installed on a vertical steel tank (RVS) for dark oil products, equipped with heaters. In particular, instead of one dispensing nozzle and one siphon valve, three dispensing nozzles and three siphon valves are installed vertically at distances corresponding to the rules for the construction of vertical, cylindrical, steel tanks for oil and oil products. The branch pipes are equipped with valves of the appropriate diameter and pipelines.

At the same time, a drainage pipe is welded to the bottom of the tank wall, which is equipped with a valve and a pipeline. Through the pipeline, water is supplied by a pump or by gravity to a separate tank.

Additional siphon taps are designed to determine the water level in the tank. The installation of additional dispensing and drainage pipes, as well as siphon taps, allows continuous pumping of crude oil that is above the water level.

At the same time, simultaneously with pumping, there will be an accelerated separation of water from crude oil due to the use of internal heaters, as well as drainage of water from the reservoir using a drainage pipe, gate valve and pipeline communications.

The technical device works as follows. The crude oil enters the reservoir through the inlet and the corresponding valve.

Hot steam is supplied to the RVS with the help of internal heaters. After filling, the operator uses the siphon taps to determine the approximate water level in the tank. After that, the drain valve is opened to pump out the water through the pipeline. Having determined the water level in the tank, the operator opens the necessary valve of the additional dispensing pipe for pumping the crude oil through the pipeline.

In the process of dispensing oil, the operator periodically determines the water level in the tank and regulates the process of pumping oil using additional and main dispensing nozzles and corresponding valves.

Disadvantages of a storage tank for dispensing and separating crude oil from water are:

1. Inability to visually determine the oil level in the reservoir.

2. Large error in measuring the water level using siphon taps.

3. It takes a lot of time for the operator to determine the amount of water.

Known universal device for determining the levels of various liquids in tanks [Matveev YU.A. and other utility model patent No. 55971 dated 27.08.2006]. The device includes a flexible metal tape with a hollow cylinder fixed in the lower part. A weight is rigidly attached to the base inside the cylinder. The load serves to maintain the cylinder in an upright position at the oil-water phase boundary. The weights of the cylinder and the load are selected taking into account the densities of oil and water. It should be borne in mind that the densities of oil and water have different values.

The water level is determined after the cylinder reaches the oil-water phase boundary. Due to the selected mass, the cylinder penetrates through the oil layer and with the help of the load takes a vertical position in the upper layer of the produced water. In this case, the beginning of the digital values of the tape measure corresponds to the oil-water interface. Determination of the water (oil) level is carried out according to the indication of the measuring tape. This value of the tape measure will show the distance from the top edge of the tank to the water level H ₁ . In order to determine the amount of water, it is necessary to subtract the previously obtained value of H _{1 from the value of the base height of the reservoir H 0} . The oil liquid level is calculated from the value on a measuring tape left by the upper layer of oil H ₂ .

The disadvantages of this device are:

1. Low efficiency of the device associated with a large loss of time for determination.

2. Large measurement error.

3. Lack of the ability to visually determine the levels of oil and water.

Also known is a measuring device for determining the level of water in tanks intended for oil and oil products. [Matveev Yu.A. and other utility model patent No. 66035 dated 27.08.2007].

The following additional equipment is installed inside and outside the vertical cylindrical tank for dark oil products: a hatch, a roller device, a rod, as well as a metal ruler, which is attached to the tank using metal corners. A plate is fixed on the ruler, which, with the help of a cable, moves horizontally, depending on the position of the cylinder, which has a weight in the lower part. The load is designed for the cylinder to take a vertical position. The top of the cylinder is connected to a cable using a bracket. The cylinder has the ability to move horizontally along the rod using a ring.

The measuring device works as follows. The cylinder is lowered along the rod with the help of a metal cable and a ring and is installed with its upper part at the oil-water interface. By means of a roller device, the cable changes the position of the index plate. The upper position of the plate on the measuring ruler determines the water level in the tank.

At the same time, the time for making measurements is significantly reduced and the accuracy of the determination is increased. The reduction in time is due to the fact that the operator does not need to go up and down the tank to take water measurements. The operator can determine the water level using the proposed measuring device without going up on the tank, which increases the efficiency of his work on the production of water and oil measurements.

The disadvantages of the measuring device are:

1. There is no possibility of determining the oil level without taking measurements using various measuring devices that are associated with raising and lowering the operator onto the tank.

2. The inability to visually determine the levels of oil and water at the same time.

The closest in technical essence to the proposed utility model is a device for the visual determination of oil and water levels in reservoirs [Matveev YA, Bogdanov A.Yu. Utility model patent No. 74205 dated 20.08.2008].

The following additional equipment is installed inside and outside the vertical cylindrical tank for dark oil products: two hatches, two roller devices, two rods, as well as two metal rulers, which are attached to the tank using metal corners. Two plates are fixed on the rulers, which, with the help of metal cables, move horizontally, depending on the position of the cylinders with a load in the lower part. The load is designed for the cylinder to take a vertical position. The upper part of the cylinders is connected to the cable using brackets. The cylinders have the ability to move horizontally along the rod using rings.

It should be noted that one set of additional equipment, including a hatch, a roller device, a rod, a metal ruler with a plate, which is connected with a cylinder with a metal cable, is designed to determine the water level, and the second, a similar set of additional equipment for the oil level.

The weights of the cylinders are selected taking into account the densities of oil and water.

The device works as follows. The cylinder, designed to determine the water level, is lowered along the rod with the help of a metal cable and a ring and is installed with its upper part at the oil-water interface. By means of a roller device, the cable changes the position of the index plate. The upper position of the plate on the measuring ruler determines the water level in the tank.

Likewise, a cylinder designed for determining the oil level is lowered along the rod with a metal cable and ring and installed at the upper boundary of the oil level. By means of a roller device, the cable changes the position of the index plate. The upper position of the plate on the measuring ruler determines the oil level in the tank.

The disadvantages of a device for visually determining the levels of oil and water in tanks are:

1. Arrangement of measuring rulers on different sides of the tank.

2. The complexity of the design associated with the presence of two rods inside the tank.

3. The presence of a large number of additional equipment, in particular roller devices and hatches.

The proposed utility model allows solving the problem of increasing the efficiency of visual determination of water and oil levels in a reservoir.

The solution to this problem is achieved by the fact that cylinders with brackets and cables for determining oil and water are installed in one technological hatch, while measuring metal rulers with plates are equipped on one side of the tank, and also by the fact that roller devices consist of two wheels.

These features are essential for solving the problem of the utility model, since the operator's work efficiency is increased, and the time for determining the oil and water levels in the reservoir is reduced.

The essence of the utility model is illustrated by drawings (Fig. 1, Fig. 2, Fig. 3), which show: the tank and the device in section, as well as a front view of the metal measuring rulers and the roller device.

The proposed tank 1, which has inlet and outlet nozzles 2, a pipeline for receiving and dispensing petroleum products 3, valves 4, skylight and gauge hatches 5, 6, a ventilation nozzle 7, a breathing valve 8 is placed additional equipment.

A technical hatch 9, two roller devices 10, as well as two metal measuring rulers 11, 12 are installed, which are attached to the tank using metal corners 13. Two plates 14 are fixed on the rulers, which, using metal cables 15, move horizontally depending on the position of the cylinders 16, having a load at the bottom. The load is designed for the cylinder to take a vertical position. The upper part of the cylinders is connected to the cable by means of brackets 17. To determine the oil and water levels, a measuring scale 18 is applied on the rulers.

A metal ruler 11 with a plate 14, which is connected by means of a cable 15 with the corresponding cylinder 16, is designed to determine the oil level. A metal ruler 12 with a plate 14, which is connected by means of a cable 15 to the corresponding cylinder 16, is designed to determine the water level.

The weights of the cylinders are selected taking into account the densities of oil and water. It should be borne in mind that the densities of oil and water have different values. The cylinders 16 are on the surfaces of oil and water, respectively.

The roller device consists of a body 19, wheels 20, a shaft 21 and holders 22. For the convenience of operation and maintenance, the wheels of the roller device are made of different diameters.

The device works as follows. Crude oil 23 together with water 24 from the well enter reservoir 1. Layers of oil and water are formed in the reservoir. In this case, the water will be in the lower part of the tank, due to the higher density.

Cylinder 16, designed to determine the water level, is lowered into the tank using a metal cable and installed at the oil-water interface. With the help of roller devices 10, the cable changes the position of the corresponding plate. The upper position of the plate on the measuring ruler determines the water level in the tank.

Similarly, the cylinder 16, intended for determining the oil level, is lowered into the tank using a metal cable and installed at the upper boundary of the oil level 23. By means of roller devices, the cable changes the position of the corresponding plate. The upper position of the plate on the measuring ruler determines the oil level in the tank.

To facilitate the operator's work, a red stripe is applied to the oil level gauge to indicate the maximum oil level in the tank.

The plates are installed on metal measuring rulers according to the tenon-groove connection principle.

The use of the proposed device allows the operator to simultaneously visually determine the levels of oil and water in the tank, since the measuring rulers are located on one side of the VST. It also simplifies the repair and maintenance of roller devices and reduces the number of hatches on the tank.

At the same time, the time for making measurements is significantly reduced and the accuracy of the determination is increased. The reduction in time is due to the fact that the operator does not need to climb and descend to the tank to make oil and water measurements.

The operator can visually determine the oil and water level using the proposed device without climbing the tank, which increases the efficiency of his work in the production of water and oil measurements, and also prevents emergencies associated with oil overflows.

Claims (1)

A device for visually determining oil and water levels in tanks using measuring rulers, containing cylinders with cables, roller devices, measuring rulers, plates, characterized in that cylinders with brackets and cables for determining oil and water levels are installed in one technological hatch, two measuring metal rulers with plates are equipped on one side of the tank, while the first ruler with a plate is designed to determine the oil level, and the second ruler with a plate is designed to determine the water level, as well as the fact that the masses of the cylinders are selected taking into account the densities of oil and water, which have different meanings, and roller devices consist of two wheels of different diameters.

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