RU2754759C1 - Process fluid sampling device - Google Patents

Abstract

FIELD: oil industry.

SUBSTANCE: invention relates to technology and techniques for sampling liquid and can be used in oil and other industries. A device for sampling a process fluid is disclosed, including a sampling container with a bottom and an upper sealed removable lid equipped with a stopper, a long tube fixed hermetically in the stopper, a gas outlet channel passing through the stopper and communicated in the working position with the top of the container and the outer space. The plug is inserted into the lid with the ability to move from top to bottom from the working position to the transport position, respectively, the long tube is equipped at the top with an additional removable plug for fixing at the sampling point, and at the bottom with a seal made with the possibility of hermetic interaction with the bottom of the container when the plug is moved to the transport position, the gas outlet channel communicates with the outer space by a lateral outlet in the plug, which is configured to enter the container when the plug is moved to the transport position.

EFFECT: invention allows sampling and delivery to the place of analysis without contact with the atmosphere and consists of a small number of simple structural elements, which allows its use and transportation without the use of special equipment.

1 cl, 2 dwg

Description

A device for sampling a process fluid refers to the technology and technique of fluid sampling and can be used in the oil production and other industries where the accuracy of determining the parameters of the investigated fluid is required. For example, when sampling for the quantitative determination of aggressive components, in particular, dissolved oxygen in waste water.

Known device for sampling liquid petroleum products from a reservoir (patent for PM RU No. 145897, IPC G01N 1/16, publ. 09/27/2014 Bull. No. 27), containing a receiving container, a pump with inlet and outlet connecting pipes, intake pipes, drain valve and a main pipeline, and the main pipeline is connected at one end to the receiving tank, and at the other end it is connected to the drain valve, while the pump is connected to the main pipeline using inlet and outlet connecting pipes, and the device is assembled in a single body, connecting pipes, intake pipes , the drain valve and the main pipeline contain shut-off control valves, and the intake pipes are connected to the inlet pump nozzles and are fixed in the wall of the body at different levels in height, so that they protrude beyond the body, and their ends contain connecting flanges.

The disadvantages of this system are the complexity of the structural elements and the use of pumping equipment, leading to the need for periodic maintenance and repairs, which increases the number of personnel to use this technical solution, and a narrow field of application as stationary equipment used for tanks, which does not provide, if necessary, hermetic sampling ...

Known device for taking control samples of liquid (patent for PM RU No. 2036, IPC G01N 1/10, publ. 04.16.1996), containing a shut-off element connected to the sampling point, and it is equipped with a tubular needle, one end fixed to the shut-off element, the other, needle-shaped, is connected to the sampling container through a membrane made of an easily punctured material and hermetically installed on the sampling container.

The disadvantage of this technical solution is the complexity of the structural elements, which is due to the presence of a short-lived pierceable membrane, which guarantees the need for constant maintenance of the sampling unit, and the need to use special elements in the form of an onboard clan at the sampling point leads to an increase in metal consumption.

The closest in technical essence is a drainage device (patent RU No. 202449, IPC G01N 1/10, publ. 02/18/2021 Bull. No. 5), made in the form of a vessel with an inlet, containing a plug with two tubes of different lengths, the upper ends of which equipped with a removable valve, and the vessel is additionally equipped with a removable cover-cylinder, the lower part of which is hermetically connected to the vessel, the plug with tubes is installed in the upper part of the cover-cylinder, while the outer diameter of the plug is equal to the inner diameter of the inlet of the vessel, and the end of the tube of shorter length is not extends beyond the bottom surface of the plug.

The disadvantage of this device is a narrow field of application as a device for sampling from depth, since sampling can be carried out only from the environment surrounding the device, in the water column. The presence of two nozzles, taking into account the constant installation and dismantling of the plug in which they are located, complicates the design and use and, as a result, reduces reliability.

The technical task of the proposed technical solution is the creation of a universal device for sampling process fluid, which allows sampling and delivery to the place of analysis without contact with the atmosphere and consists of a small number of simple structural elements, which increases reliability, simplifies manufacturing, repair, maintenance allows you to use and carry it without the use of special equipment.

The technical problem is solved by a device for sampling a process fluid, which includes a sampling container with a bottom and an upper sealed removable cover equipped with a plug, a long tube fixed tightly in the plug, a gas outlet channel passing through the plug and communicated in the working position with the top of the container and the outer space.

The novelty is that the plug is inserted into the lid with the ability to move from top to bottom from the working position to the transport one, respectively, the long tube is equipped on top with an additional removable plug for fixing at the sampling point, and at the bottom with a seal made with the possibility of hermetic interaction with the bottom of the container when the plug is moved into the transport position, the gas outlet channel communicates with the outer space by a lateral outlet in the plug, which is configured to enter the container when the plug is moved to the transport position.

FIG. 1 shows a diagram of the device in transport position.

FIG. 2 shows a diagram of the device in working position.

A device for sampling a process fluid (not shown) includes a sampling container 1 (Figs. 1 and 2) with a bottom 2 and an upper hermetically sealed removable cover 3 equipped with a plug 4, a long tube 5, tightly fixed in a plug 4, a gas outlet 6 passing through plug 4, removable plug 7 and seal 8 at the bottom of the tube 5. Sampling container 1, plug 4, long tube 5 and removable plug 7 can be made of any material appropriate to the conditions of use at a particular enterprise (for example, for oil producing enterprises for for sampling waste water, rubber, glass, etc. can be used as a material - the authors do not pretend to this). The upper sealed cover 3 and the seal 8 can be made of any impermeable material corresponding to the conditions of use in a particular enterprise (for example, rubber, silicone, polyurethane, etc. - the authors do not claim this).

The sealed removable cover 3 is fixed on the sampling container 1 by tight fitting or screwing in or by any other known method (the authors do not pretend to be). The plug 4 can be inserted into the cover 3 with the ability to move from top to bottom from the working position to the transport one, respectively, with a small force or screwed in by thread or in any other similar way (the authors do not pretend to be). The long tube 5 is equipped on top with an additional removable plug 7 for fixing at the sampling point by threading or screwing onto the long tube 5 or in any other known way. The dimensions of the removable plug 7 are selected depending on the size of the sampling valve used at the industrial facility, so that the body of the plug 7 hermetically closes the outlet of the process fluid from the sampling point. The seal 8 is attached to the bottom of the long tube 5 by welding, glue or another known method, ensuring reliable fixation of the material of the seal 8 to the material of the long tube 5. The gas outlet channel 6 with a lateral outlet 9 in the plug 4 can be made by drilling, groove or any in another known way. The lateral outlet 9 is located at such a height in the plug 4 that allows the outlet 9 to enter the container 1 when the plug 4 is moved to the transport position, in which, in the future, the device will be delivered to the place of analysis without contact with the atmosphere.

The dimensions of the sampling vessel 1 are chosen empirically, depending on the required volume of the sampled process fluid, which is determined depending on the analysis method. For example, one of the methods for the determination of dissolved oxygen requires 200-1000 ml. sampled liquid. The size of the long tube 5 is selected depending on the location of the sampling point in such a way as to ensure the comfort and safety of the worker when performing this operation, for example, so that the length of the long tube 5 allows the device itself to be placed on a hard surface and then take samples. For example, at oil treatment facilities, where the samplers are in an accessible place for the operator, the length of the long tube 5 will be no more than two meters. Under similar conditions, the proposed device is transported to the test site by one person.

Structural elements and technological connections, which do not affect the operability of the device, are not shown in the drawings (Figs. 1 and 2) or are shown conditionally.

The device works as follows.

For convenience and efficiency of sampling, the device to the sampling site (sample tube, drain valve, etc. - not shown) is proposed to be transported practically assembled, after the last use, without the use of special equipment (for carrying a small container, one operator). The sealed cover 3 is already fixed on the sampling container 1, for example, by pushing on, screwing in or in another known way. The plug 4 is in the transport position (Fig. 1). The operator fixes the removable plug 7 at the sampling point and in the upper part of the long tube 5, after which the plug 4 is transferred to the working position (Fig. 2) by pulling, screwing or in another known way from the cover 3. After opening (valve, tap, gate valve or etc. - not shown) the flow of liquid from the sampling point, fill the sampling container 1 along the long tube 5 and exit the gas through the gas outlet channel 6. After a small outlet of the liquid sample from the gas outlet channel 6, the plug 4 is moved to the transport position (Fig. . 1). In this case, the side channel 9 of the gas outlet channel 6 enters into the container 1, and the seal 8 of the tube rests hermetically against the bottom 2 of the container 1, excluding the access of gas from the atmosphere to the container 1 and the outflow of the sample from the container 1, respectively. After shutting off the flow of liquid to the sampling point, the removable plug 7 is disconnected from the sampling point and the device is delivered to the test site. For ease of transportation, a part of the sample that could remain in the tube 5 can be drained into a specially designated place by directing the tube 5 in the desired direction and turning the device over, while the sample remains completely inside the container 1.

The proposed device for taking samples of process fluid allows for sampling and delivery to the place of analysis without contact with the atmosphere and consists of a small number of simple structural elements, which allows its use and transportation without the use of special equipment. Sampling can be performed from most industrial sites equipped with a sampling valve due to the ability to select the size of the removable plug at the top of the long tube, which makes the device versatile.

Claims (1)

A device for sampling a process fluid, including a sampling container with a bottom and an upper sealed removable lid equipped with a stopper, a long tube fixed hermetically in the stopper, a gas outlet channel passing through the stopper and communicated in the working position with the top of the container and the outer space, characterized by that the plug is inserted into the lid with the ability to move from top to bottom from the working position to the transport position, respectively, the long tube is equipped at the top with an additional removable plug for fixing at the sampling point, and at the bottom with a seal made with the possibility of hermetically interacting with the bottom of the container when the plug is moved to the transport position, the gas outlet channel communicates with the outer space by a lateral outlet in the plug, which is configured to enter the container when the plug is moved to the transport position.

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