CN201218094Y - Crude oil buoy weighing and measuring device - Google Patents

Abstract

The utility model discloses a weighing and measuring device for a buoy for crude oil, which is used for measuring oil on the spot of a single well in the petroleum industry, so that the crude oil can be measured accurately and the operation is simple. The crude oil buoy weighing and measuring device includes a buoy, a floating beam and a weighing mound. There is a floating code on the floating beam, and the buoy is fixed on one end of the floating beam by a connecting hinge. On the body wall of the tank body, a swimming beam is supported. The use of this device for crude oil metering does not require additional communication pipes to be installed on the metering tank to be metered. The medium to be tested has a wide range of applications, whether it is a uniform liquid or a non-uniform liquid, or even a gas-containing crude oil with a high viscosity, as long as it has a certain fluidity, it can be used.

Description

Crude oil buoy weighing and measuring device

technical field

The utility model belongs to crude oil metering facilities in the petroleum industry, in particular to a weighing and metering device for a crude oil buoy, which is used for measuring oil on the spot of a single well, so that the metering of crude oil is accurate and the operation is simple.

Background technique

At present, the measuring tank volume method is often used to measure oil in the field of single well in the petroleum industry, and the biggest disadvantage is that the error is large. The main reason for the analysis is that the vertical distribution of gas in the crude oil in the metering tank is uneven, and the volume of crude oil after complete degassing cannot be measured. If the weight of crude oil is changed, it can effectively avoid the influence of gas in crude oil. At present, the mass method oil measurement technology mainly includes weighing measurement, glass tube oil measurement and pressure sensor system oil measurement. It is time-consuming, laborious and costly to measure oil by weighing, and the control procedure is cumbersome and poor in timeliness. The glass tube to measure oil must ensure that there is always bottom water, and the bottom water is not contaminated, otherwise the measurement will be inaccurate, and in winter, the glass tube is easy to freeze, freezes and cannot be used. The pressure sensing system has a high cost of oil measurement, poor adaptability to high-viscosity oil, and is not durable, so it is not suitable for promotion.

Contents of the invention

The purpose of the utility model is to provide a weighing and measuring device for crude oil buoys, reduce the measurement error of gas-containing crude oil, use the weighing method to measure oil, and improve the accuracy of measurement.

The above-mentioned purpose can be achieved by using this technical solution: the crude oil buoy weighing and measuring device includes a buoy, a swimming beam and a weighing weight. The weight is suspended, and the balance shaft is fixed on the body wall of the tank to support the beam.

Compared with the prior art, the utility model has the following beneficial effects: the utility model completes the weighing measurement of crude oil or other liquids according to the principle of Archimedes. The device is designed according to the principle of Archimedes that "the buoyancy force on an object is equal to the weight of the liquid displaced by the object". By adjusting the weight of the swimming code and the weighing weight, the traveling beam is balanced to realize the measurement of the buoyancy on the buoy. Since the buoy is cylindrical, the cross-sectional area at different heights is constant, so the buoyancy is in a linear relationship with the liquid pressure on the bottom of the buoy. In this way, the liquid column pressure on the bottom of the measured measuring tank can be reflected by the position of the scale on the swimming beam and the calibration value of the weight on the weighing mound, and accurate measurement results can be obtained through calculation. Compared with the existing measurement methods and measurement tools, the utility model has the advantages of accurate measurement, simple structure, easy processing and manufacture, economical and durable. Not affected by temperature, light and season in the metering tank. The buoy is sealed and installed in the metering tank, thereby effectively avoiding H ₂ S poisoning and crude oil theft, and is easy to popularize. The use of this device for crude oil metering does not require additional communication pipes to be installed on the metering tank to be metered. The medium to be tested has a wide range of applications, whether it is a uniform liquid or a non-uniform liquid, or even a gas-containing crude oil with a high viscosity, as long as it has a certain fluidity, it can be used.

Description of drawings

Accompanying drawing 1 is the structure of the utility model installed on the tank top, schematic diagram of installation.

Accompanying drawing 2 is the structure of the utility model that is installed in tank side body wall, installation schematic diagram.

Detailed ways

Below in conjunction with embodiment the utility model is further described in detail: referring to accompanying drawing 1 and accompanying drawing 2, crude oil buoy weighing metering device comprises buoy 1, beam 4, weighing weight 6, when being used for metering the bigger liquid of viscosity , in order to measure accurately and quickly, non-stick coatings such as Teflon should be attached to the outer surface of buoy 1, and of course non-stick coatings can also be attached. The swimming beam 4 is provided with a swimming code 5, the buoy 1 and the swimming beam 4 are connected and the hinge 2 is fixed on one end of the swimming beam 4, the other end of the swimming beam 4 is hung with a weight 6, and the balance shaft 7 is fixed on the body of the tank body 8. On the wall, it can be fixed on the top or the side, supports the beam 4, and is hingedly connected with the beam 4. Accompanying drawing 1 is that the utility model is fixed on the top position of tank body 8 body wall by balance fulcrum 7, and accompanying drawing 2 is fixed on the side body wall of tank body 8, when being fixed on the side body wall of tank body 8 , it is necessary to seal the position where the balance fulcrum 7 passes through the tank body 8 . Also be provided with spirit level 3 and scale on the beam 4, scale is provided with weight scale. Weighing weight 6 comprises weight holder and weight, and weight is inserted on the weight holder, can increase or decrease the quantity of weight according to the actual needs of measurement. The buoy 1 is a rigid body with sufficient weight so that it will not float in the liquid to be tested, that is, the weight is greater than the maximum possible buoyancy, so that the buoy 1 is always in a vertical working state. When installing the device, the buoy 1 is installed in the tank body 8 at a position far away from the liquid inlet and where the liquid is relatively still. Correspondingly calculate and make the weight scale of scale on the beam 4 according to the height of buoy 1. The calibration of the weight scale can be performed according to the water weight corresponding to the unit water column height in the metering tank or according to the unit water column height in the metering tank. The unit draft of the buoy 1 has an influence on the buoyancy of the buoy 1, which should correspond to the unit displacement of the floating code 5 on the scale of the beam 4, that is, there is a moment balance relationship between the buoy 1 and the floating code 5. The weight selection of the weighing weight 6 should ensure that the moment change produced to the beam 4 when increasing or decreasing the weight is equal to the torque change produced when the weight 5 moves from the 0 scale end of the beam 4 scale to the maximum range scale.

According to the size of the measured measuring tank, the measuring device with different weighing weights can be manufactured, so that each measuring device is equipped with a corresponding number of weights, and each weight is marked with a marked weight. During actual use, according to the size of the metering tank to be measured, a set of this metering device with a corresponding weight is installed on the body wall of the metering tank body 8 . After the output fluid of the oil well enters the tank body 8, the buoy 1 is floated. At this time, the number of weights on the weighing mound 6 is gradually subtracted and the position of the swimming weight 5 on the beam 4 is adjusted to make the beam 4 in balance. state. Judging whether the beam 4 is balanced by the level 3, adding the marked weight of the number of weights subtracted from the weighing weight 6 and the weight scale of the swimming code 5 on the scale is the actual weight of the liquid in the tank body 8.

Claims (4)

1, former oil float support Weighing device, it is characterized in that this device comprises floating drum (1), walking beam (4) and the stone roller (6) of weighing, walking beam (4) is provided with rider (5), floating drum (1) is fixed on an end of walking beam (4) by connecting hinge (2), the other end of walking beam (4) hangs the stone roller (6) of weighing, balance fulcrum (7) is fixed on the body wall of tank body (8), is supporting walking beam (4).

2, former oil float support Weighing device according to claim 1 is characterized in that also being provided with level gauge (3) and scale on the walking beam (4), and scale is provided with weight scale.

3, former oil float support Weighing device according to claim 1, the stone roller (6) that it is characterized in that weighing comprise stone roller holder and counterweight, and counterweight is inserted into Tuo Tuoshang.

4, former oil float support Weighing device according to claim 1 is characterized in that floating drum (1) external surface is with non-sticking lining or not attached non-sticking lining.

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